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Latest 25 from a total of 189 transactions
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Unstake All | 20732364 | 53 days ago | IN | 0 ETH | 0.00027379 | ||||
Get Reward | 20732354 | 53 days ago | IN | 0 ETH | 0.00017328 | ||||
Get Reward | 20463116 | 91 days ago | IN | 0 ETH | 0.00630263 | ||||
Unstake All | 20463110 | 91 days ago | IN | 0 ETH | 0.00958488 | ||||
Unstake All | 20226459 | 124 days ago | IN | 0 ETH | 0.00237046 | ||||
Get Reward | 20226456 | 124 days ago | IN | 0 ETH | 0.00371936 | ||||
Unstake All | 19772719 | 187 days ago | IN | 0 ETH | 0.00093248 | ||||
Unstake All | 19589442 | 213 days ago | IN | 0 ETH | 0.00225393 | ||||
Get Reward | 19589434 | 213 days ago | IN | 0 ETH | 0.00626051 | ||||
Get Reward | 19268325 | 258 days ago | IN | 0 ETH | 0.00246766 | ||||
Get Reward | 19158774 | 274 days ago | IN | 0 ETH | 0.00102449 | ||||
Unstake All | 19060086 | 287 days ago | IN | 0 ETH | 0.00138126 | ||||
Get Reward | 19060083 | 287 days ago | IN | 0 ETH | 0.00090549 | ||||
Unstake All | 19059566 | 287 days ago | IN | 0 ETH | 0.00181015 | ||||
Unstake All | 19040891 | 290 days ago | IN | 0 ETH | 0.00245462 | ||||
Get Reward | 18987396 | 298 days ago | IN | 0 ETH | 0.00335068 | ||||
Unstake All | 18926633 | 306 days ago | IN | 0 ETH | 0.00287661 | ||||
Get Reward | 18926271 | 306 days ago | IN | 0 ETH | 0.00160122 | ||||
Get Reward | 18923077 | 307 days ago | IN | 0 ETH | 0.00111393 | ||||
Unstake All | 18923012 | 307 days ago | IN | 0 ETH | 0.00229413 | ||||
Unstake All | 18874928 | 313 days ago | IN | 0 ETH | 0.00235343 | ||||
Get Reward | 18868035 | 314 days ago | IN | 0 ETH | 0.00137546 | ||||
Get Reward | 18849185 | 317 days ago | IN | 0 ETH | 0.00183907 | ||||
Unstake All | 18849162 | 317 days ago | IN | 0 ETH | 0.00363107 | ||||
Unstake All | 18801748 | 324 days ago | IN | 0 ETH | 0.00536229 |
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17224168 | 545 days ago | Contract Creation | 0 ETH |
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Contract Name:
RewardOpenSlim
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 100000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {IPoolPositionAndRewardFactorySlim} from "./interfaces/IPoolPositionAndRewardFactorySlim.sol"; import {RewardBase} from "./RewardBase.sol"; contract RewardOpenSlim is RewardBase { constructor(IERC20 _stakingToken, IPoolPositionAndRewardFactorySlim _rewardFactory) RewardBase(_stakingToken, _rewardFactory) {} function stake(uint256 amount, address account) external { _stake(msg.sender, amount, account); } function unstake(uint256 amount, address recipient) external { _unstake(msg.sender, amount, recipient); } function unstakeAll(address recipient) external { _unstakeAll(msg.sender, recipient); } function getReward(address recipient, uint8[] calldata rewardTokenIndices) external { _getReward(msg.sender, recipient, rewardTokenIndices); } function getReward(address recipient, uint8 rewardTokenIndex) external returns (uint256) { return _getReward(msg.sender, recipient, rewardTokenIndex); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "../interfaces/IPool.sol"; import "../interfaces/IPosition.sol"; interface IFactory { event PoolCreated(address poolAddress, uint256 fee, uint256 tickSpacing, int32 activeTick, int256 lookback, uint64 protocolFeeRatio, IERC20 tokenA, IERC20 tokenB); event SetFactoryProtocolFeeRatio(uint64 protocolFeeRatio); event SetFactoryOwner(address owner); /// @notice creates new pool /// @param _fee is a rate in prbmath 60x18 decimal format /// @param _tickSpacing 1.0001^tickSpacing is the bin width /// @param _activeTick initial activeTick of the pool /// @param _lookback TWAP lookback in whole seconds /// @param _tokenA ERC20 token /// @param _tokenB ERC20 token function create( uint256 _fee, uint256 _tickSpacing, int256 _lookback, int32 _activeTick, IERC20 _tokenA, IERC20 _tokenB ) external returns (IPool); function lookup( uint256 fee, uint256 tickSpacing, int256 lookback, IERC20 tokenA, IERC20 tokenB ) external view returns (IPool); function owner() external view returns (address); function position() external view returns (IPosition); /// @notice protocolFeeRatio ratio of the swap fee that is kept for the //protocol function protocolFeeRatio() external view returns (uint64); /// @notice lookup table for whether a pool is owned by the factory function isFactoryPool(IPool pool) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./IFactory.sol"; interface IPool { event Swap(address sender, address recipient, bool tokenAIn, bool exactOutput, uint256 amountIn, uint256 amountOut, int32 activeTick); event AddLiquidity(address indexed sender, uint256 indexed tokenId, BinDelta[] binDeltas); event MigrateBinsUpStack(address indexed sender, uint128 binId, uint32 maxRecursion); event TransferLiquidity(uint256 fromTokenId, uint256 toTokenId, RemoveLiquidityParams[] params); event RemoveLiquidity(address indexed sender, address indexed recipient, uint256 indexed tokenId, BinDelta[] binDeltas); event BinMerged(uint128 indexed binId, uint128 reserveA, uint128 reserveB, uint128 mergeId); event BinMoved(uint128 indexed binId, int128 previousTick, int128 newTick); event ProtocolFeeCollected(uint256 protocolFee, bool isTokenA); event SetProtocolFeeRatio(uint256 protocolFee); /// @notice return parameters for Add/Remove liquidity /// @param binId of the bin that changed /// @param kind one of the 4 Kinds (0=static, 1=right, 2=left, 3=both) /// @param isActive bool to indicate whether the bin is still active /// @param lowerTick is the lower price tick of the bin in its current state /// @param deltaA amount of A token that has been added or removed /// @param deltaB amount of B token that has been added or removed /// @param deltaLpToken amount of LP balance that has increase (add) or decreased (remove) struct BinDelta { uint128 deltaA; uint128 deltaB; uint256 deltaLpBalance; uint128 binId; uint8 kind; int32 lowerTick; bool isActive; } /// @notice time weighted average state /// @param twa the twa at the last update instant /// @param value the new value that was passed in at the last update /// @param lastTimestamp timestamp of the last update in seconds /// @param lookback time in seconds struct TwaState { int96 twa; int96 value; uint64 lastTimestamp; } /// @notice bin state parameters /// @param kind one of the 4 Kinds (0=static, 1=right, 2=left, 3=both) /// @param lowerTick is the lower price tick of the bin in its current state /// @param mergeId binId of the bin that this bin has merged in to /// @param reserveA amount of A token in bin /// @param reserveB amount of B token in bin /// @param totalSupply total amount of LP tokens in this bin /// @param mergeBinBalance LP token balance that this bin posseses of the merge bin struct BinState { uint128 reserveA; uint128 reserveB; uint128 mergeBinBalance; uint128 mergeId; uint128 totalSupply; uint8 kind; int32 lowerTick; } /// @notice Parameters for each bin that will get new liquidity /// @param kind one of the 4 Kinds (0=static, 1=right, 2=left, 3=both) /// @param pos bin position /// @param isDelta bool that indicates whether the bin position is relative //to the current bin or an absolute position /// @param deltaA amount of A token to add /// @param deltaB amount of B token to add struct AddLiquidityParams { uint8 kind; int32 pos; bool isDelta; uint128 deltaA; uint128 deltaB; } /// @notice Parameters for each bin that will have liquidity removed /// @param binId index of the bin losing liquidity /// @param amount LP balance amount to remove struct RemoveLiquidityParams { uint128 binId; uint128 amount; } /// @notice State of the pool /// @param activeTick current bin position that contains the active bins /// @param status pool status. e.g. locked or unlocked; status values //defined in Pool.sol /// @param binCounter index of the last bin created /// @param protocolFeeRatio ratio of the swap fee that is kept for the //protocol struct State { int32 activeTick; uint8 status; uint128 binCounter; uint64 protocolFeeRatio; } /// @notice fee for pool in 18 decimal format function fee() external view returns (uint256); /// @notice tickSpacing of pool where 1.0001^tickSpacing is the bin width function tickSpacing() external view returns (uint256); /// @notice address of token A function tokenA() external view returns (IERC20); /// @notice address of token B function tokenB() external view returns (IERC20); /// @notice address of Factory function factory() external view returns (IFactory); /// @notice bitmap of active bins function binMap(int32 tick) external view returns (uint256); /// @notice mapping of tick/kind to binId function binPositions(int32 tick, uint256 kind) external view returns (uint128); /// @notice internal accounting of the sum tokenA balance across bins function binBalanceA() external view returns (uint128); /// @notice internal accounting of the sum tokenB balance across bins function binBalanceB() external view returns (uint128); /// @notice Twa state values function getTwa() external view returns (TwaState memory); /// @notice log base binWidth of the time weighted average price function getCurrentTwa() external view returns (int256); /// @notice pool state function getState() external view returns (State memory); /// @notice Add liquidity to a pool. /// @param tokenId NFT token ID that will hold the position /// @param params array of AddLiquidityParams that specify the mode and //position of the liquidity /// @param data callback function that addLiquidity will call so that the //caller can transfer tokens function addLiquidity( uint256 tokenId, AddLiquidityParams[] calldata params, bytes calldata data ) external returns ( uint256 tokenAAmount, uint256 tokenBAmount, BinDelta[] memory binDeltas ); /// @notice Transfer liquidity in an array of bins from one nft tokenId //to another /// @param fromTokenId NFT token ID that holds the position being transferred /// @param toTokenId NFT token ID that is receiving liquidity /// @param params array of binIds and amounts to transfer function transferLiquidity( uint256 fromTokenId, uint256 toTokenId, RemoveLiquidityParams[] calldata params ) external; /// @notice Remove liquidity from a pool. /// @param recipient address that will receive the removed tokens /// @param tokenId NFT token ID that holds the position being removed /// @param params array of RemoveLiquidityParams that specify the bins, //and amounts function removeLiquidity( address recipient, uint256 tokenId, RemoveLiquidityParams[] calldata params ) external returns ( uint256 tokenAOut, uint256 tokenBOut, BinDelta[] memory binDeltas ); /// @notice Migrate bins up the linked list of merged bins so that its //mergeId is the currrent active bin. /// @param binId is an array of the binIds to be migrated /// @param maxRecursion is the maximum recursion depth of the migration. set to //zero to recurse until the active bin is found. function migrateBinUpStack(uint128 binId, uint32 maxRecursion) external; /// @notice swap tokens /// @param recipient address that will receive the output tokens /// @param amount amount of token that is either the input if exactOutput //is false or the output if exactOutput is true /// @param tokenAIn bool indicating whether tokenA is the input /// @param exactOutput bool indicating whether the amount specified is the //exact output amount (true) /// @param sqrtPriceLimit limiting sqrt price of the swap. A value of 0 //indicates no limit. Limit is only engaged for exactOutput=false. If the //limit is reached only part of the input amount will be swapped and the //callback will only require that amount of the swap to be paid. /// @param data callback function that swap will call so that the //caller can transfer tokens function swap( address recipient, uint256 amount, bool tokenAIn, bool exactOutput, uint256 sqrtPriceLimit, bytes calldata data ) external returns (uint256 amountIn, uint256 amountOut); /// @notice bin information for a given binId function getBin(uint128 binId) external view returns (BinState memory bin); /// @notice LP token balance for a given tokenId at a given binId function balanceOf(uint256 tokenId, uint128 binId) external view returns (uint256 lpToken); /// @notice tokenA scale value /// @dev msb is a flag to indicate whether tokenA has more or less than 18 //decimals. Scale is used in conjuction with Math.toScale/Math.fromScale //functions to convert from token amounts to D18 scale internal pool //accounting. function tokenAScale() external view returns (uint256); /// @notice tokenB scale value /// @dev msb is a flag to indicate whether tokenA has more or less than 18 //decimals. Scale is used in conjuction with Math.toScale/Math.fromScale //functions to convert from token amounts to D18 scale internal pool //accounting. function tokenBScale() external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol"; import "../interfaces/IPositionMetadata.sol"; interface IPosition is IERC721Enumerable { event SetMetadata(IPositionMetadata metadata); /// @notice mint new position NFT function mint(address to) external returns (uint256 tokenId); /// @notice mint new position NFT function tokenOfOwnerByIndexExists(address owner, uint256 index) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface IPositionMetadata { function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @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() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @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 * ==== * * [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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(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) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(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) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason 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 { // 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); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. It the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. // We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`. // This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`. // Using an algorithm similar to the msb conmputation, we are able to compute `result = 2**(k/2)` which is a // good first aproximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1; uint256 x = a; if (x >> 128 > 0) { x >>= 128; result <<= 64; } if (x >> 64 > 0) { x >>= 64; result <<= 32; } if (x >> 32 > 0) { x >>= 32; result <<= 16; } if (x >> 16 > 0) { x >>= 16; result <<= 8; } if (x >> 8 > 0) { x >>= 8; result <<= 4; } if (x >> 4 > 0) { x >>= 4; result <<= 2; } if (x >> 2 > 0) { result <<= 1; } // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { uint256 result = sqrt(a); if (rounding == Rounding.Up && result * result < a) { result += 1; } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Multicall.sol) pragma solidity ^0.8.0; import "./Address.sol"; /** * @dev Provides a function to batch together multiple calls in a single external call. * * _Available since v4.1._ */ abstract contract Multicall { /** * @dev Receives and executes a batch of function calls on this contract. */ function multicall(bytes[] calldata data) external virtual returns (bytes[] memory results) { results = new bytes[](data.length); for (uint256 i = 0; i < data.length; i++) { results[i] = Address.functionDelegateCall(address(this), data[i]); } return results; } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; import {IPool} from "@maverickprotocol/maverick-v1-interfaces/contracts/interfaces/IPool.sol"; import {IFactory} from "@maverickprotocol/maverick-v1-interfaces/contracts/interfaces/IFactory.sol"; import {IPoolPositionSlim} from "./IPoolPositionSlim.sol"; import {IReward} from "./IReward.sol"; interface IPoolPositionAndRewardFactorySlim { event PoolPositionCreated(IPool pool, uint128[] binIds, uint128[] ratios, IPoolPositionSlim poolPosition, uint256 poolPositionNumber); event LpRewardCreated(IPoolPositionSlim poolPosition, address reward); event AddNewApprovedRewardToken(address rewardToken, uint256 minimumAmount); struct RewardInfos { IReward.RewardInfo[] rewardInfoList; } function allPoolPositions(uint256 poolPositionNumber) external view returns (IPoolPositionSlim poolPosition); function poolPositionNumber(IPoolPositionSlim poolPosition) external view returns (uint256 poolPositionNumber); function getLpRewardByPP(IPoolPositionSlim) external view returns (IReward); function poolFactory() external view returns (IFactory); function allPoolPositionsLength() external view returns (uint256); function isApprovedRewardToken(address reward) external view returns (bool); function minimumRewardAmount(address reward) external view returns (uint256); function isPoolPosition(IPoolPositionSlim poolPosition) external view returns (bool); function createPoolPositionAndRewards(IPool pool, uint128[] calldata binIds, uint128[] calldata ratios, bool isStatic) external returns (IPoolPositionSlim); function owner() external view returns (address); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import {IPool} from "@maverickprotocol/maverick-v1-interfaces/contracts/interfaces/IPool.sol"; interface IPoolPositionSlim is IERC20Metadata { error InvalidBinIds(uint128[] binIds); error InvalidRatio(); error BinIsMerged(); error InvalidTokenId(uint256 tokenId); event MigrateBinLiquidity(uint128 oldBinId, uint128 newBinId); function allBinIds() external view returns (uint128[] memory); function binIds(uint256) external view returns (uint128); function ratios(uint256) external view returns (uint128); /// @notice tokenId that holds PP assets function tokenId() external view returns (uint256); /// @notice Pool that the position exists in function pool() external view returns (IPool); /// @notice Whether or not the PP contains all static bins as opposed to //movement bins function isStatic() external view returns (bool); /// @notice Returns struct array of bin lp amounts that need to be transfered for a mint /// @param binZeroLpAddAmount LP amount of bin[0] to be added function binLpAddAmountRequirement(uint128 binZeroLpAddAmount) external view returns (IPool.RemoveLiquidityParams[] memory params); /// @notice Burns PoolPosition ERC20 tokens from given account and //trasnfers Pool liquidity position to toTokenId /// @param account wallet or contract whose PoolPosition tokens will be //burned /// @param toTokenId pool.position() that will own the output liquidity /// @param lpAmountToUnStake number of PoolPosition LPs tokens to burn function burnFromToTokenIdAsBinLiquidity(address account, uint256 toTokenId, uint256 lpAmountToUnStake) external returns (IPool.RemoveLiquidityParams[] memory params); /// @notice Burns PoolPosition ERC20 tokens and trasnfers resulting //liquidity as A/B tokens to recipient /// @param account wallet or contract whose PoolPosition tokens will be //burned /// @param recipient pool.position() that will own the output tokens /// @param lpAmountToUnStake number of PoolPosition LPs tokens to burn function burnFromToAddressAsReserves(address account, address recipient, uint256 lpAmountToUnStake) external returns (uint256 amountA, uint256 amountB); /// @notice Migrates the PoolPosition liquidity to active bin if the //liquidity is currently merged /// @dev Migrating only applies to one-bin dynamic-kind PoolPositions and //it must be called before any other external call will execute if the bin //in the PoolPosition has been merged. function migrateBinLiquidity() external; /// @notice Mint new PoolPosition tokens /// @param to wallet or contract where PoolPosition tokens will be minted /// @param fromTokenId pool.position() that will contribute input liquidity /// @param binZeroLpAddAmount LP balance of pool.position() in PoolPosition //bins[0] to be transfered // @return liquidity number of PoolPosition LP tokens minted function mint(address to, uint256 fromTokenId, uint128 binZeroLpAddAmount) external returns (uint256 liquidity); /// @notice Amount of pool.tokenA() and pool.tokenB() tokens held by the //PoolPosition // @return reserveA Amount of pool.tokenA() tokens held by the // PoolPosition // @return reserveB Amount of pool.tokenB() tokens held by the // PoolPosition function getReserves() external view returns (uint256 reserveA, uint256 reserveB); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IReward { event NotifyRewardAmount(address sender, address rewardTokenAddress, uint256 amount, uint256 duration, uint256 rewardRate); event GetReward(address sender, address account, address recipient, uint8 rewardTokenIndex, address rewardTokenAddress, uint256 rewardPaid); event UnStake(address sender, address account, uint256 amount, address recipient, uint256 userBalance, uint256 totalSupply); event Stake(address sender, address supplier, uint256 amount, address account, uint256 userBalance, uint256 totalSupply); event AddRewardToken(address rewardTokenAddress, uint8 rewardTokenIndex); event RemoveRewardToken(address rewardTokenAddress, uint8 rewardTokenIndex); error DurationOutOfBounds(uint256 duration); error OnlyFactoryOwner(); error ZeroAmount(); error NotValidRewardToken(address rewardTokenAddress); error TooManyRewardTokens(); error StaleToken(uint8 rewardTokenIndex); error TokenNotStale(uint8 rewardTokenIndex); error RewardStillActive(uint8 rewardTokenIndex); error RewardAmountBelowThreshold(uint256 amount, uint256 minimumAmount); struct RewardInfo { // Timestamp of when the rewards finish uint256 finishAt; // Minimum of last updated time and reward finish time uint256 updatedAt; // Reward to be paid out per second uint256 rewardRate; // Sum of (reward rate * dt * 1e18 / total supply) uint256 rewardPerTokenStored; IERC20 rewardToken; } struct EarnedInfo { // account address account; // earned uint256 earned; // reward token IERC20 rewardToken; } function rewardInfo() external view returns (RewardInfo[] memory); function tokenIndex(address tokenAddress) external view returns (uint8); function balanceOf(address account) external view returns (uint256); function earned(address account, address rewardTokenAddress) external view returns (uint256); function earned(address account) external view returns (EarnedInfo[] memory earnedInfo); /// @notice Add rewards tokens account the pot of rewards with a transferFrom. /// @param rewardTokenAddress address of reward token added function notifyAndTransfer(address rewardTokenAddress, uint256 amount, uint256 duration) external; /// @notice Deposit LP tokens for reward allocation. /// @param amount LP token amount account deposit. /// @param account The receiver of `amount` deposit benefit. function stake(uint256 amount, address account) external; /// @notice Withdraw LP token stake. /// @param amount LP token amount account withdraw. /// @param recipient Receiver of the LP tokens. function unstake(uint256 amount, address recipient) external; /// @notice Withdraw entire amount of LP token stake. /// @param recipient Receiver of the LP tokens. function unstakeAll(address recipient) external; /// @notice Get reward proceeds for transaction sender account `account`. /// @param recipient Receiver of REWARD_TOKEN rewards. /// @param rewardTokenIndices indices of reward tokens to collect function getReward(address recipient, uint8[] calldata rewardTokenIndices) external; /// @notice Get reward proceeds for transaction sender account `account`. /// @param recipient Receiver of REWARD_TOKEN rewards. /// @param rewardTokenIndex index of reward token to collect function getReward(address recipient, uint8 rewardTokenIndex) external returns (uint256); /// @notice Remove stale tokens from the reward contract /// @param rewardTokenIndex is the index of the reward token in the //tokenIndex mapping function removeStaleToken(uint8 rewardTokenIndex) external; }
// SPDX-License-Identifier: MIT // modified from OpenZeppelin Contracts (last updated v4.8.0) (utils/structs/BitMaps.sol) pragma solidity ^0.8.0; /** * @dev Library for managing uint256 to bool mapping in a compact and efficient way, providing the keys are sequential. * Largely inspired by Uniswap's https://github.com/Uniswap/merkle-distributor/blob/master/contracts/MerkleDistributor.sol[merkle-distributor]. */ library BitMap { struct Instance { uint256 _data; } /** * @dev Returns whether the bit at `index` is set. */ function get(Instance storage self, uint8 index) internal view returns (bool) { uint256 mask = 1 << index; return self._data & mask != 0; } /** * @dev Sets the bit at `index`. */ function set(Instance storage self, uint8 index) internal { uint256 mask = 1 << index; self._data |= mask; } /** * @dev Unsets the bit at `index`. */ function unset(Instance storage self, uint8 index) internal { uint256 mask = 1 << index; self._data &= ~mask; } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.0; import {PRBMath} from "prb-math/contracts/PRBMath.sol"; import {PRBMathUD60x18} from "prb-math/contracts/PRBMathUD60x18.sol"; library Math { using PRBMathUD60x18 for uint256; uint256 constant MAX_BIT = 0x8000000000000000000000000000000000000000000000000000000000000000; uint256 constant DEFAULT_SCALE = 1; function max(uint256 x, uint256 y) internal pure returns (uint256) { return x > y ? x : y; } function min(uint256 x, uint256 y) internal pure returns (uint256) { return x < y ? x : y; } function mulDiv(uint256 x, uint256 y, uint256 k, bool ceil) internal pure returns (uint256 result) { result = PRBMath.mulDiv(x, y, k); if (ceil && mulmod(x, y, k) != 0) result = result + 1; } function clip(uint256 x, uint256 y) internal pure returns (uint256) { return x < y ? 0 : x - y; } function toScale(uint256 amount, uint256 scaleFactor, bool ceil) internal pure returns (uint256) { if (scaleFactor == DEFAULT_SCALE || amount == 0) { return amount; } else if ((scaleFactor & MAX_BIT) != 0) { return amount * (scaleFactor & ~MAX_BIT); } else { return (ceil && mulmod(amount, 1, scaleFactor) != 0) ? amount / scaleFactor + 1 : amount / scaleFactor; } } function fromScale(uint256 amount, uint256 scaleFactor) internal pure returns (uint256) { if (scaleFactor == DEFAULT_SCALE) { return amount; } else if ((scaleFactor & MAX_BIT) != 0) { return amount / (scaleFactor & ~MAX_BIT); } else { return amount * scaleFactor; } } function tickSqrtPrice(uint256 tickSpacing, int32 _tick) internal pure returns (uint256 _result) { unchecked { uint256 tick = _tick < 0 ? uint256(-int256(_tick)) : uint256(int256(_tick)); tick *= tickSpacing; uint256 ratio = tick & 0x1 != 0 ? 0xfffcb933bd6fad9d3af5f0b9f25db4d6 : 0x100000000000000000000000000000000; if (tick & 0x2 != 0) ratio = (ratio * 0xfff97272373d41fd789c8cb37ffcaa1c) >> 128; if (tick & 0x4 != 0) ratio = (ratio * 0xfff2e50f5f656ac9229c67059486f389) >> 128; if (tick & 0x8 != 0) ratio = (ratio * 0xffe5caca7e10e81259b3cddc7a064941) >> 128; if (tick & 0x10 != 0) ratio = (ratio * 0xffcb9843d60f67b19e8887e0bd251eb7) >> 128; if (tick & 0x20 != 0) ratio = (ratio * 0xff973b41fa98cd2e57b660be99eb2c4a) >> 128; if (tick & 0x40 != 0) ratio = (ratio * 0xff2ea16466c9838804e327cb417cafcb) >> 128; if (tick & 0x80 != 0) ratio = (ratio * 0xfe5dee046a99d51e2cc356c2f617dbe0) >> 128; if (tick & 0x100 != 0) ratio = (ratio * 0xfcbe86c7900aecf64236ab31f1f9dcb5) >> 128; if (tick & 0x200 != 0) ratio = (ratio * 0xf987a7253ac4d9194200696907cf2e37) >> 128; if (tick & 0x400 != 0) ratio = (ratio * 0xf3392b0822b88206f8abe8a3b44dd9be) >> 128; if (tick & 0x800 != 0) ratio = (ratio * 0xe7159475a2c578ef4f1d17b2b235d480) >> 128; if (tick & 0x1000 != 0) ratio = (ratio * 0xd097f3bdfd254ee83bdd3f248e7e785e) >> 128; if (tick & 0x2000 != 0) ratio = (ratio * 0xa9f746462d8f7dd10e744d913d033333) >> 128; if (tick & 0x4000 != 0) ratio = (ratio * 0x70d869a156ddd32a39e257bc3f50aa9b) >> 128; if (tick & 0x8000 != 0) ratio = (ratio * 0x31be135f97da6e09a19dc367e3b6da40) >> 128; if (tick & 0x10000 != 0) ratio = (ratio * 0x9aa508b5b7e5a9780b0cc4e25d61a56) >> 128; if (tick & 0x20000 != 0) ratio = (ratio * 0x5d6af8dedbcb3a6ccb7ce618d14225) >> 128; if (tick & 0x40000 != 0) ratio = (ratio * 0x2216e584f630389b2052b8db590e) >> 128; if (_tick > 0) ratio = type(uint256).max / ratio; _result = (ratio * PRBMathUD60x18.SCALE) >> 128; } } function getTickL(uint256 _reserveA, uint256 _reserveB, uint256 _sqrtLowerTickPrice, uint256 _sqrtUpperTickPrice) internal pure returns (uint256) { uint256 precisionBump = 0; if ((_reserveA >> 60) == 0 && (_reserveB >> 60) == 0) { precisionBump = 40; _reserveA <<= precisionBump; _reserveB <<= precisionBump; } if (_reserveA == 0 || _reserveB == 0) { uint256 b = (_reserveA.div(_sqrtUpperTickPrice) + _reserveB.mul(_sqrtLowerTickPrice)); return mulDiv(b, _sqrtUpperTickPrice, _sqrtUpperTickPrice - _sqrtLowerTickPrice, false) >> precisionBump; } else { uint256 b = (_reserveA.div(_sqrtUpperTickPrice) + _reserveB.mul(_sqrtLowerTickPrice)) >> 1; uint256 diff = _sqrtUpperTickPrice - _sqrtLowerTickPrice; return mulDiv(b + (b.mul(b) + mulDiv(_reserveB.mul(_reserveA), diff, _sqrtUpperTickPrice, false)).sqrt(), _sqrtUpperTickPrice, diff, false) >> precisionBump; } } function getTickSqrtPriceAndL(uint256 _reserveA, uint256 _reserveB, uint256 _sqrtLowerTickPrice, uint256 _sqrtUpperTickPrice) internal pure returns (uint256 sqrtPrice, uint256 liquidity) { liquidity = getTickL(_reserveA, _reserveB, _sqrtLowerTickPrice, _sqrtUpperTickPrice); if (_reserveA == 0) { return (_sqrtLowerTickPrice, liquidity); } if (_reserveB == 0) { return (_sqrtUpperTickPrice, liquidity); } sqrtPrice = ((_reserveA + liquidity.mul(_sqrtLowerTickPrice)).div(_reserveB + liquidity.div(_sqrtUpperTickPrice))).sqrt(); sqrtPrice = min(max(sqrtPrice, _sqrtLowerTickPrice), _sqrtUpperTickPrice); } }
// SPDX-License-Identifier: GPL-2.0-or-later // adapted from https://github.com/Synthetixio/synthetix/blob/c53070db9a93e5717ca7f74fcaf3922e991fb71b/contracts/StakingRewards.sol pragma solidity ^0.8.0; import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {Math} from "@openzeppelin/contracts/utils/math/Math.sol"; import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import {Multicall} from "@openzeppelin/contracts/utils/Multicall.sol"; import {IReward} from "./interfaces/IReward.sol"; import {Math as MavMath} from "./libraries/Math.sol"; import {BitMap} from "./libraries/BitMap.sol"; import {IPoolPositionAndRewardFactorySlim} from "./interfaces/IPoolPositionAndRewardFactorySlim.sol"; abstract contract RewardBase is IReward, ReentrancyGuard, Multicall { using SafeERC20 for IERC20; using BitMap for BitMap.Instance; uint8 public MAX_REWARD_TOKENS = 16; uint256 constant ONE = 1e18; // after this period of time without a reward, users can remove token from // list uint256 constant STALE_INTERVAL = 30 days; IPoolPositionAndRewardFactorySlim public immutable rewardFactory; IERC20 public immutable stakingToken; // Max Duration of rewards to be paid out uint256 constant MAX_DURATION = 30 days; uint256 constant MIN_DURATION = 3 days; // Total staked uint256 public totalSupply; // User address => staked amount mapping(address => uint256) public balanceOf; struct RewardData { // Timestamp of when the rewards finish uint256 finishAt; // Minimum of last updated time and reward finish time uint256 updatedAt; // Reward to be paid out per second uint256 rewardRate; // Sum of (reward rate * dt * 1e18 / total supply) uint256 rewardPerTokenStored; // User address => rewardPerTokenStored mapping(address => uint256) userRewardPerTokenPaid; // User address => rewards to be claimed mapping(address => uint256) rewards; // User address => rewards mapping to track if token index has been // updated mapping(address => uint256) resetCount; // total earned uint256 escrowedReward; uint256 globalResetCount; IERC20 rewardToken; } RewardData[] public rewardData; mapping(address => uint8) public tokenIndex; BitMap.Instance public globalActive; constructor(IERC20 _stakingToken, IPoolPositionAndRewardFactorySlim _rewardFactory) { stakingToken = _stakingToken; rewardFactory = _rewardFactory; // push empty token so that we can use index zero as a sentinel value // in tokenIndex mapping; ie if tokenIndex[X] = 0, we know X is not in // the list rewardData.push(); } modifier checkAmount(uint256 amount) { if (amount == 0) revert ZeroAmount(); _; } ///////////////////////////////////// /// View Functions ///////////////////////////////////// function rewardInfo() external view returns (RewardInfo[] memory info) { uint256 length = rewardData.length; info = new RewardInfo[](length); for (uint8 i = 1; i < length; i++) { RewardData storage data = rewardData[i]; info[i] = RewardInfo({finishAt: data.finishAt, updatedAt: data.updatedAt, rewardRate: data.rewardRate, rewardPerTokenStored: data.rewardPerTokenStored, rewardToken: data.rewardToken}); } } function earned(address account) public view returns (EarnedInfo[] memory earnedInfo) { uint256 length = rewardData.length; earnedInfo = new EarnedInfo[](length); for (uint8 i = 1; i < length; i++) { RewardData storage data = rewardData[i]; earnedInfo[i] = EarnedInfo({account: account, earned: earned(account, data), rewardToken: data.rewardToken}); } } function earned(address account, address rewardTokenAddress) external view returns (uint256) { uint256 rewardTokenIndex = tokenIndex[rewardTokenAddress]; if (rewardTokenIndex == 0) revert NotValidRewardToken(rewardTokenAddress); RewardData storage data = rewardData[rewardTokenIndex]; return earned(account, data); } function earned(address account, RewardData storage data) internal view returns (uint256) { return data.rewards[account] + Math.mulDiv(balanceOf[account], MavMath.clip(data.rewardPerTokenStored + deltaRewardPerToken(data), data.userRewardPerTokenPaid[account]), ONE); } ///////////////////////////////////// /// Internal Update Functions ///////////////////////////////////// function updateReward(address account, RewardData storage data) internal { uint256 reward = deltaRewardPerToken(data); if (reward != 0) { data.rewardPerTokenStored += reward; data.escrowedReward += Math.mulDiv(reward, totalSupply, ONE, Math.Rounding(1)); } data.updatedAt = lastTimeRewardApplicable(data.finishAt); if (account != address(0)) { if (data.resetCount[account] != data.globalResetCount) { // check to see if this token index was changed data.userRewardPerTokenPaid[account] = 0; data.rewards[account] = 0; data.resetCount[account] = data.globalResetCount; } data.rewards[account] += deltaEarned(account, data); data.userRewardPerTokenPaid[account] = data.rewardPerTokenStored; } } function deltaEarned(address account, RewardData storage data) internal view returns (uint256) { return Math.mulDiv(balanceOf[account], MavMath.clip(data.rewardPerTokenStored, data.userRewardPerTokenPaid[account]), ONE); } function deltaRewardPerToken(RewardData storage data) internal view returns (uint256) { uint256 timeDiff = MavMath.clip(lastTimeRewardApplicable(data.finishAt), data.updatedAt); if (timeDiff == 0 || totalSupply == 0 || data.rewardRate == 0) { return 0; } return Math.mulDiv(data.rewardRate, timeDiff * ONE, totalSupply); } function lastTimeRewardApplicable(uint256 dataFinishAt) internal view returns (uint256) { return Math.min(dataFinishAt, block.timestamp); } function updateAllRewards(address account) internal { uint256 length = rewardData.length; for (uint8 i = 1; i < length; i++) { if (!globalActive.get(i)) continue; RewardData storage data = rewardData[i]; updateReward(account, data); } } /// @dev add token if it is approved and is not already tracked function _checkAndAddRewardToken(address rewardTokenAddress) internal returns (uint8 rewardTokenIndex) { rewardTokenIndex = tokenIndex[rewardTokenAddress]; if (rewardTokenIndex != 0) return rewardTokenIndex; if (!rewardFactory.isApprovedRewardToken(rewardTokenAddress)) revert NotValidRewardToken(rewardTokenAddress); // find first unset token index and use it for (uint8 i = 1; i < MAX_REWARD_TOKENS + 1; i++) { if (globalActive.get(i)) continue; rewardTokenIndex = i; break; } if (rewardTokenIndex == 0) revert TooManyRewardTokens(); if (rewardTokenIndex == rewardData.length) rewardData.push(); RewardData storage _data = rewardData[rewardTokenIndex]; _data.rewardToken = IERC20(rewardTokenAddress); _data.globalResetCount++; tokenIndex[rewardTokenAddress] = rewardTokenIndex; globalActive.set(rewardTokenIndex); emit AddRewardToken(rewardTokenAddress, rewardTokenIndex); } ///////////////////////////////////// /// Internal User Functions ///////////////////////////////////// function _stake(address supplier, uint256 amount, address account) internal nonReentrant checkAmount(amount) { updateAllRewards(account); stakingToken.safeTransferFrom(supplier, address(this), amount); balanceOf[account] += amount; totalSupply += amount; emit Stake(msg.sender, supplier, amount, account, balanceOf[account], totalSupply); } function _unstake(address account, uint256 amount, address recipient) internal nonReentrant checkAmount(amount) { updateAllRewards(account); balanceOf[account] -= amount; totalSupply -= amount; stakingToken.safeTransfer(recipient, amount); emit UnStake(msg.sender, account, amount, recipient, balanceOf[account], totalSupply); } function _unstakeAll(address account, address recipient) internal { _unstake(account, balanceOf[account], recipient); } function _getReward(address account, address recipient, uint8 rewardTokenIndex) internal nonReentrant returns (uint256 reward) { if (!globalActive.get(rewardTokenIndex)) revert StaleToken(rewardTokenIndex); RewardData storage data = rewardData[rewardTokenIndex]; updateReward(account, data); reward = data.rewards[account]; if (reward != 0) { data.rewards[account] = 0; data.escrowedReward -= reward; data.rewardToken.safeTransfer(recipient, reward); } emit GetReward(msg.sender, account, recipient, rewardTokenIndex, address(data.rewardToken), reward); } function _getReward(address account, address recipient, uint8[] memory rewardTokenIndices) internal { uint256 length = rewardTokenIndices.length; for (uint8 i; i < length; i++) { _getReward(account, recipient, rewardTokenIndices[i]); } } ///////////////////////////////////// /// Add Reward ///////////////////////////////////// /// @notice Adds reward to contract. function notifyAndTransfer(address rewardTokenAddress, uint256 amount, uint256 duration) public nonReentrant { if (duration < MIN_DURATION) revert DurationOutOfBounds(duration); uint256 minimumAmount = rewardFactory.minimumRewardAmount(rewardTokenAddress); if (amount < minimumAmount) revert RewardAmountBelowThreshold(amount, minimumAmount); duration = _notifyRewardAmount(rewardTokenAddress, amount, duration); if (duration > MAX_DURATION) revert DurationOutOfBounds(duration); IERC20(rewardTokenAddress).safeTransferFrom(msg.sender, address(this), amount); } /* @notice called by reward depositor to recompute the reward rate. If * notifier sends more than remaining amount, then notifier sets the rate. * Else, we extend the duration at the current rate. We may notify with less * than enough of assets to cover the period. In that case, reward rate will * be 0 and the assets sit on the contract until another notify happens with * enough assets for a positive rate. * @dev Must notify before transfering assets. Transfering and then * notifying with the same amount will break the logic of this reward * contract. If a contract needs to transfer and then notify, the * notification amount should be 0. */ function _notifyRewardAmount(address rewardTokenAddress, uint256 amount, uint256 duration) internal returns (uint256) { uint8 rewardTokenIndex = _checkAndAddRewardToken(rewardTokenAddress); RewardData storage data = rewardData[rewardTokenIndex]; updateReward(address(0), data); uint256 remainingRewards = MavMath.clip(data.rewardToken.balanceOf(address(this)), data.escrowedReward); if (amount > remainingRewards || data.rewardRate == 0) { // if notifying new amount, notifier gets to set the rate data.rewardRate = (amount + remainingRewards) / duration; } else { // if notifier doesn't bring enough, we extend the duration at the // same rate duration = (amount + remainingRewards) / data.rewardRate; } data.finishAt = block.timestamp + duration; data.updatedAt = block.timestamp; emit NotifyRewardAmount(msg.sender, rewardTokenAddress, amount, duration, data.rewardRate); return duration; } ///////////////////////////////////// /// Admin Function ///////////////////////////////////// function removeStaleToken(uint8 rewardTokenIndex) public virtual nonReentrant { _removeStaleToken(rewardTokenIndex); } function _removeStaleToken(uint8 rewardTokenIndex) internal { RewardData storage data = rewardData[rewardTokenIndex]; if (block.timestamp < STALE_INTERVAL + data.finishAt) revert TokenNotStale(rewardTokenIndex); emit RemoveRewardToken(address(data.rewardToken), rewardTokenIndex); // remove token from list globalActive.unset(rewardTokenIndex); delete tokenIndex[address(data.rewardToken)]; delete data.rewardToken; delete data.escrowedReward; delete data.rewardPerTokenStored; delete data.rewardRate; delete data.finishAt; delete data.updatedAt; } }
// SPDX-License-Identifier: Unlicense pragma solidity >=0.8.4; /// @notice Emitted when the result overflows uint256. error PRBMath__MulDivFixedPointOverflow(uint256 prod1); /// @notice Emitted when the result overflows uint256. error PRBMath__MulDivOverflow(uint256 prod1, uint256 denominator); /// @notice Emitted when one of the inputs is type(int256).min. error PRBMath__MulDivSignedInputTooSmall(); /// @notice Emitted when the intermediary absolute result overflows int256. error PRBMath__MulDivSignedOverflow(uint256 rAbs); /// @notice Emitted when the input is MIN_SD59x18. error PRBMathSD59x18__AbsInputTooSmall(); /// @notice Emitted when ceiling a number overflows SD59x18. error PRBMathSD59x18__CeilOverflow(int256 x); /// @notice Emitted when one of the inputs is MIN_SD59x18. error PRBMathSD59x18__DivInputTooSmall(); /// @notice Emitted when one of the intermediary unsigned results overflows SD59x18. error PRBMathSD59x18__DivOverflow(uint256 rAbs); /// @notice Emitted when the input is greater than 133.084258667509499441. error PRBMathSD59x18__ExpInputTooBig(int256 x); /// @notice Emitted when the input is greater than 192. error PRBMathSD59x18__Exp2InputTooBig(int256 x); /// @notice Emitted when flooring a number underflows SD59x18. error PRBMathSD59x18__FloorUnderflow(int256 x); /// @notice Emitted when converting a basic integer to the fixed-point format overflows SD59x18. error PRBMathSD59x18__FromIntOverflow(int256 x); /// @notice Emitted when converting a basic integer to the fixed-point format underflows SD59x18. error PRBMathSD59x18__FromIntUnderflow(int256 x); /// @notice Emitted when the product of the inputs is negative. error PRBMathSD59x18__GmNegativeProduct(int256 x, int256 y); /// @notice Emitted when multiplying the inputs overflows SD59x18. error PRBMathSD59x18__GmOverflow(int256 x, int256 y); /// @notice Emitted when the input is less than or equal to zero. error PRBMathSD59x18__LogInputTooSmall(int256 x); /// @notice Emitted when one of the inputs is MIN_SD59x18. error PRBMathSD59x18__MulInputTooSmall(); /// @notice Emitted when the intermediary absolute result overflows SD59x18. error PRBMathSD59x18__MulOverflow(uint256 rAbs); /// @notice Emitted when the intermediary absolute result overflows SD59x18. error PRBMathSD59x18__PowuOverflow(uint256 rAbs); /// @notice Emitted when the input is negative. error PRBMathSD59x18__SqrtNegativeInput(int256 x); /// @notice Emitted when the calculating the square root overflows SD59x18. error PRBMathSD59x18__SqrtOverflow(int256 x); /// @notice Emitted when addition overflows UD60x18. error PRBMathUD60x18__AddOverflow(uint256 x, uint256 y); /// @notice Emitted when ceiling a number overflows UD60x18. error PRBMathUD60x18__CeilOverflow(uint256 x); /// @notice Emitted when the input is greater than 133.084258667509499441. error PRBMathUD60x18__ExpInputTooBig(uint256 x); /// @notice Emitted when the input is greater than 192. error PRBMathUD60x18__Exp2InputTooBig(uint256 x); /// @notice Emitted when converting a basic integer to the fixed-point format format overflows UD60x18. error PRBMathUD60x18__FromUintOverflow(uint256 x); /// @notice Emitted when multiplying the inputs overflows UD60x18. error PRBMathUD60x18__GmOverflow(uint256 x, uint256 y); /// @notice Emitted when the input is less than 1. error PRBMathUD60x18__LogInputTooSmall(uint256 x); /// @notice Emitted when the calculating the square root overflows UD60x18. error PRBMathUD60x18__SqrtOverflow(uint256 x); /// @notice Emitted when subtraction underflows UD60x18. error PRBMathUD60x18__SubUnderflow(uint256 x, uint256 y); /// @dev Common mathematical functions used in both PRBMathSD59x18 and PRBMathUD60x18. Note that this shared library /// does not always assume the signed 59.18-decimal fixed-point or the unsigned 60.18-decimal fixed-point /// representation. When it does not, it is explicitly mentioned in the NatSpec documentation. library PRBMath { /// STRUCTS /// struct SD59x18 { int256 value; } struct UD60x18 { uint256 value; } /// STORAGE /// /// @dev How many trailing decimals can be represented. uint256 internal constant SCALE = 1e18; /// @dev Largest power of two divisor of SCALE. uint256 internal constant SCALE_LPOTD = 262144; /// @dev SCALE inverted mod 2^256. uint256 internal constant SCALE_INVERSE = 78156646155174841979727994598816262306175212592076161876661_508869554232690281; /// FUNCTIONS /// /// @notice Calculates the binary exponent of x using the binary fraction method. /// @dev Has to use 192.64-bit fixed-point numbers. /// See https://ethereum.stackexchange.com/a/96594/24693. /// @param x The exponent as an unsigned 192.64-bit fixed-point number. /// @return result The result as an unsigned 60.18-decimal fixed-point number. function exp2(uint256 x) internal pure returns (uint256 result) { unchecked { // Start from 0.5 in the 192.64-bit fixed-point format. result = 0x800000000000000000000000000000000000000000000000; // Multiply the result by root(2, 2^-i) when the bit at position i is 1. None of the intermediary results overflows // because the initial result is 2^191 and all magic factors are less than 2^65. if (x & 0x8000000000000000 > 0) { result = (result * 0x16A09E667F3BCC909) >> 64; } if (x & 0x4000000000000000 > 0) { result = (result * 0x1306FE0A31B7152DF) >> 64; } if (x & 0x2000000000000000 > 0) { result = (result * 0x1172B83C7D517ADCE) >> 64; } if (x & 0x1000000000000000 > 0) { result = (result * 0x10B5586CF9890F62A) >> 64; } if (x & 0x800000000000000 > 0) { result = (result * 0x1059B0D31585743AE) >> 64; } if (x & 0x400000000000000 > 0) { result = (result * 0x102C9A3E778060EE7) >> 64; } if (x & 0x200000000000000 > 0) { result = (result * 0x10163DA9FB33356D8) >> 64; } if (x & 0x100000000000000 > 0) { result = (result * 0x100B1AFA5ABCBED61) >> 64; } if (x & 0x80000000000000 > 0) { result = (result * 0x10058C86DA1C09EA2) >> 64; } if (x & 0x40000000000000 > 0) { result = (result * 0x1002C605E2E8CEC50) >> 64; } if (x & 0x20000000000000 > 0) { result = (result * 0x100162F3904051FA1) >> 64; } if (x & 0x10000000000000 > 0) { result = (result * 0x1000B175EFFDC76BA) >> 64; } if (x & 0x8000000000000 > 0) { result = (result * 0x100058BA01FB9F96D) >> 64; } if (x & 0x4000000000000 > 0) { result = (result * 0x10002C5CC37DA9492) >> 64; } if (x & 0x2000000000000 > 0) { result = (result * 0x1000162E525EE0547) >> 64; } if (x & 0x1000000000000 > 0) { result = (result * 0x10000B17255775C04) >> 64; } if (x & 0x800000000000 > 0) { result = (result * 0x1000058B91B5BC9AE) >> 64; } if (x & 0x400000000000 > 0) { result = (result * 0x100002C5C89D5EC6D) >> 64; } if (x & 0x200000000000 > 0) { result = (result * 0x10000162E43F4F831) >> 64; } if (x & 0x100000000000 > 0) { result = (result * 0x100000B1721BCFC9A) >> 64; } if (x & 0x80000000000 > 0) { result = (result * 0x10000058B90CF1E6E) >> 64; } if (x & 0x40000000000 > 0) { result = (result * 0x1000002C5C863B73F) >> 64; } if (x & 0x20000000000 > 0) { result = (result * 0x100000162E430E5A2) >> 64; } if (x & 0x10000000000 > 0) { result = (result * 0x1000000B172183551) >> 64; } if (x & 0x8000000000 > 0) { result = (result * 0x100000058B90C0B49) >> 64; } if (x & 0x4000000000 > 0) { result = (result * 0x10000002C5C8601CC) >> 64; } if (x & 0x2000000000 > 0) { result = (result * 0x1000000162E42FFF0) >> 64; } if (x & 0x1000000000 > 0) { result = (result * 0x10000000B17217FBB) >> 64; } if (x & 0x800000000 > 0) { result = (result * 0x1000000058B90BFCE) >> 64; } if (x & 0x400000000 > 0) { result = (result * 0x100000002C5C85FE3) >> 64; } if (x & 0x200000000 > 0) { result = (result * 0x10000000162E42FF1) >> 64; } if (x & 0x100000000 > 0) { result = (result * 0x100000000B17217F8) >> 64; } if (x & 0x80000000 > 0) { result = (result * 0x10000000058B90BFC) >> 64; } if (x & 0x40000000 > 0) { result = (result * 0x1000000002C5C85FE) >> 64; } if (x & 0x20000000 > 0) { result = (result * 0x100000000162E42FF) >> 64; } if (x & 0x10000000 > 0) { result = (result * 0x1000000000B17217F) >> 64; } if (x & 0x8000000 > 0) { result = (result * 0x100000000058B90C0) >> 64; } if (x & 0x4000000 > 0) { result = (result * 0x10000000002C5C860) >> 64; } if (x & 0x2000000 > 0) { result = (result * 0x1000000000162E430) >> 64; } if (x & 0x1000000 > 0) { result = (result * 0x10000000000B17218) >> 64; } if (x & 0x800000 > 0) { result = (result * 0x1000000000058B90C) >> 64; } if (x & 0x400000 > 0) { result = (result * 0x100000000002C5C86) >> 64; } if (x & 0x200000 > 0) { result = (result * 0x10000000000162E43) >> 64; } if (x & 0x100000 > 0) { result = (result * 0x100000000000B1721) >> 64; } if (x & 0x80000 > 0) { result = (result * 0x10000000000058B91) >> 64; } if (x & 0x40000 > 0) { result = (result * 0x1000000000002C5C8) >> 64; } if (x & 0x20000 > 0) { result = (result * 0x100000000000162E4) >> 64; } if (x & 0x10000 > 0) { result = (result * 0x1000000000000B172) >> 64; } if (x & 0x8000 > 0) { result = (result * 0x100000000000058B9) >> 64; } if (x & 0x4000 > 0) { result = (result * 0x10000000000002C5D) >> 64; } if (x & 0x2000 > 0) { result = (result * 0x1000000000000162E) >> 64; } if (x & 0x1000 > 0) { result = (result * 0x10000000000000B17) >> 64; } if (x & 0x800 > 0) { result = (result * 0x1000000000000058C) >> 64; } if (x & 0x400 > 0) { result = (result * 0x100000000000002C6) >> 64; } if (x & 0x200 > 0) { result = (result * 0x10000000000000163) >> 64; } if (x & 0x100 > 0) { result = (result * 0x100000000000000B1) >> 64; } if (x & 0x80 > 0) { result = (result * 0x10000000000000059) >> 64; } if (x & 0x40 > 0) { result = (result * 0x1000000000000002C) >> 64; } if (x & 0x20 > 0) { result = (result * 0x10000000000000016) >> 64; } if (x & 0x10 > 0) { result = (result * 0x1000000000000000B) >> 64; } if (x & 0x8 > 0) { result = (result * 0x10000000000000006) >> 64; } if (x & 0x4 > 0) { result = (result * 0x10000000000000003) >> 64; } if (x & 0x2 > 0) { result = (result * 0x10000000000000001) >> 64; } if (x & 0x1 > 0) { result = (result * 0x10000000000000001) >> 64; } // We're doing two things at the same time: // // 1. Multiply the result by 2^n + 1, where "2^n" is the integer part and the one is added to account for // the fact that we initially set the result to 0.5. This is accomplished by subtracting from 191 // rather than 192. // 2. Convert the result to the unsigned 60.18-decimal fixed-point format. // // This works because 2^(191-ip) = 2^ip / 2^191, where "ip" is the integer part "2^n". result *= SCALE; result >>= (191 - (x >> 64)); } } /// @notice Finds the zero-based index of the first one in the binary representation of x. /// @dev See the note on msb in the "Find First Set" Wikipedia article https://en.wikipedia.org/wiki/Find_first_set /// @param x The uint256 number for which to find the index of the most significant bit. /// @return msb The index of the most significant bit as an uint256. function mostSignificantBit(uint256 x) internal pure returns (uint256 msb) { if (x >= 2**128) { x >>= 128; msb += 128; } if (x >= 2**64) { x >>= 64; msb += 64; } if (x >= 2**32) { x >>= 32; msb += 32; } if (x >= 2**16) { x >>= 16; msb += 16; } if (x >= 2**8) { x >>= 8; msb += 8; } if (x >= 2**4) { x >>= 4; msb += 4; } if (x >= 2**2) { x >>= 2; msb += 2; } if (x >= 2**1) { // No need to shift x any more. msb += 1; } } /// @notice Calculates floor(x*y÷denominator) with full precision. /// /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv. /// /// Requirements: /// - The denominator cannot be zero. /// - The result must fit within uint256. /// /// Caveats: /// - This function does not work with fixed-point numbers. /// /// @param x The multiplicand as an uint256. /// @param y The multiplier as an uint256. /// @param denominator The divisor as an uint256. /// @return result The result as an uint256. function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { unchecked { result = prod0 / denominator; } return result; } // Make sure the result is less than 2^256. Also prevents denominator == 0. if (prod1 >= denominator) { revert PRBMath__MulDivOverflow(prod1, denominator); } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. unchecked { // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 lpotdod = denominator & (~denominator + 1); assembly { // Divide denominator by lpotdod. denominator := div(denominator, lpotdod) // Divide [prod1 prod0] by lpotdod. prod0 := div(prod0, lpotdod) // Flip lpotdod such that it is 2^256 / lpotdod. If lpotdod is zero, then it becomes one. lpotdod := add(div(sub(0, lpotdod), lpotdod), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * lpotdod; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /// @notice Calculates floor(x*y÷1e18) with full precision. /// /// @dev Variant of "mulDiv" with constant folding, i.e. in which the denominator is always 1e18. Before returning the /// final result, we add 1 if (x * y) % SCALE >= HALF_SCALE. Without this, 6.6e-19 would be truncated to 0 instead of /// being rounded to 1e-18. See "Listing 6" and text above it at https://accu.org/index.php/journals/1717. /// /// Requirements: /// - The result must fit within uint256. /// /// Caveats: /// - The body is purposely left uncommented; see the NatSpec comments in "PRBMath.mulDiv" to understand how this works. /// - It is assumed that the result can never be type(uint256).max when x and y solve the following two equations: /// 1. x * y = type(uint256).max * SCALE /// 2. (x * y) % SCALE >= SCALE / 2 /// /// @param x The multiplicand as an unsigned 60.18-decimal fixed-point number. /// @param y The multiplier as an unsigned 60.18-decimal fixed-point number. /// @return result The result as an unsigned 60.18-decimal fixed-point number. function mulDivFixedPoint(uint256 x, uint256 y) internal pure returns (uint256 result) { uint256 prod0; uint256 prod1; assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } if (prod1 >= SCALE) { revert PRBMath__MulDivFixedPointOverflow(prod1); } uint256 remainder; uint256 roundUpUnit; assembly { remainder := mulmod(x, y, SCALE) roundUpUnit := gt(remainder, 499999999999999999) } if (prod1 == 0) { unchecked { result = (prod0 / SCALE) + roundUpUnit; return result; } } assembly { result := add( mul( or( div(sub(prod0, remainder), SCALE_LPOTD), mul(sub(prod1, gt(remainder, prod0)), add(div(sub(0, SCALE_LPOTD), SCALE_LPOTD), 1)) ), SCALE_INVERSE ), roundUpUnit ) } } /// @notice Calculates floor(x*y÷denominator) with full precision. /// /// @dev An extension of "mulDiv" for signed numbers. Works by computing the signs and the absolute values separately. /// /// Requirements: /// - None of the inputs can be type(int256).min. /// - The result must fit within int256. /// /// @param x The multiplicand as an int256. /// @param y The multiplier as an int256. /// @param denominator The divisor as an int256. /// @return result The result as an int256. function mulDivSigned( int256 x, int256 y, int256 denominator ) internal pure returns (int256 result) { if (x == type(int256).min || y == type(int256).min || denominator == type(int256).min) { revert PRBMath__MulDivSignedInputTooSmall(); } // Get hold of the absolute values of x, y and the denominator. uint256 ax; uint256 ay; uint256 ad; unchecked { ax = x < 0 ? uint256(-x) : uint256(x); ay = y < 0 ? uint256(-y) : uint256(y); ad = denominator < 0 ? uint256(-denominator) : uint256(denominator); } // Compute the absolute value of (x*y)÷denominator. The result must fit within int256. uint256 rAbs = mulDiv(ax, ay, ad); if (rAbs > uint256(type(int256).max)) { revert PRBMath__MulDivSignedOverflow(rAbs); } // Get the signs of x, y and the denominator. uint256 sx; uint256 sy; uint256 sd; assembly { sx := sgt(x, sub(0, 1)) sy := sgt(y, sub(0, 1)) sd := sgt(denominator, sub(0, 1)) } // XOR over sx, sy and sd. This is checking whether there are one or three negative signs in the inputs. // If yes, the result should be negative. result = sx ^ sy ^ sd == 0 ? -int256(rAbs) : int256(rAbs); } /// @notice Calculates the square root of x, rounding down. /// @dev Uses the Babylonian method https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method. /// /// Caveats: /// - This function does not work with fixed-point numbers. /// /// @param x The uint256 number for which to calculate the square root. /// @return result The result as an uint256. function sqrt(uint256 x) internal pure returns (uint256 result) { if (x == 0) { return 0; } // Set the initial guess to the least power of two that is greater than or equal to sqrt(x). uint256 xAux = uint256(x); result = 1; if (xAux >= 0x100000000000000000000000000000000) { xAux >>= 128; result <<= 64; } if (xAux >= 0x10000000000000000) { xAux >>= 64; result <<= 32; } if (xAux >= 0x100000000) { xAux >>= 32; result <<= 16; } if (xAux >= 0x10000) { xAux >>= 16; result <<= 8; } if (xAux >= 0x100) { xAux >>= 8; result <<= 4; } if (xAux >= 0x10) { xAux >>= 4; result <<= 2; } if (xAux >= 0x8) { result <<= 1; } // The operations can never overflow because the result is max 2^127 when it enters this block. unchecked { result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; // Seven iterations should be enough uint256 roundedDownResult = x / result; return result >= roundedDownResult ? roundedDownResult : result; } } }
// SPDX-License-Identifier: Unlicense pragma solidity >=0.8.4; import "./PRBMath.sol"; /// @title PRBMathUD60x18 /// @author Paul Razvan Berg /// @notice Smart contract library for advanced fixed-point math that works with uint256 numbers considered to have 18 /// trailing decimals. We call this number representation unsigned 60.18-decimal fixed-point, since there can be up to 60 /// digits in the integer part and up to 18 decimals in the fractional part. The numbers are bound by the minimum and the /// maximum values permitted by the Solidity type uint256. library PRBMathUD60x18 { /// @dev Half the SCALE number. uint256 internal constant HALF_SCALE = 5e17; /// @dev log2(e) as an unsigned 60.18-decimal fixed-point number. uint256 internal constant LOG2_E = 1_442695040888963407; /// @dev The maximum value an unsigned 60.18-decimal fixed-point number can have. uint256 internal constant MAX_UD60x18 = 115792089237316195423570985008687907853269984665640564039457_584007913129639935; /// @dev The maximum whole value an unsigned 60.18-decimal fixed-point number can have. uint256 internal constant MAX_WHOLE_UD60x18 = 115792089237316195423570985008687907853269984665640564039457_000000000000000000; /// @dev How many trailing decimals can be represented. uint256 internal constant SCALE = 1e18; /// @notice Calculates the arithmetic average of x and y, rounding down. /// @param x The first operand as an unsigned 60.18-decimal fixed-point number. /// @param y The second operand as an unsigned 60.18-decimal fixed-point number. /// @return result The arithmetic average as an unsigned 60.18-decimal fixed-point number. function avg(uint256 x, uint256 y) internal pure returns (uint256 result) { // The operations can never overflow. unchecked { // The last operand checks if both x and y are odd and if that is the case, we add 1 to the result. We need // to do this because if both numbers are odd, the 0.5 remainder gets truncated twice. result = (x >> 1) + (y >> 1) + (x & y & 1); } } /// @notice Yields the least unsigned 60.18 decimal fixed-point number greater than or equal to x. /// /// @dev Optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional counterparts. /// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions. /// /// Requirements: /// - x must be less than or equal to MAX_WHOLE_UD60x18. /// /// @param x The unsigned 60.18-decimal fixed-point number to ceil. /// @param result The least integer greater than or equal to x, as an unsigned 60.18-decimal fixed-point number. function ceil(uint256 x) internal pure returns (uint256 result) { if (x > MAX_WHOLE_UD60x18) { revert PRBMathUD60x18__CeilOverflow(x); } assembly { // Equivalent to "x % SCALE" but faster. let remainder := mod(x, SCALE) // Equivalent to "SCALE - remainder" but faster. let delta := sub(SCALE, remainder) // Equivalent to "x + delta * (remainder > 0 ? 1 : 0)" but faster. result := add(x, mul(delta, gt(remainder, 0))) } } /// @notice Divides two unsigned 60.18-decimal fixed-point numbers, returning a new unsigned 60.18-decimal fixed-point number. /// /// @dev Uses mulDiv to enable overflow-safe multiplication and division. /// /// Requirements: /// - The denominator cannot be zero. /// /// @param x The numerator as an unsigned 60.18-decimal fixed-point number. /// @param y The denominator as an unsigned 60.18-decimal fixed-point number. /// @param result The quotient as an unsigned 60.18-decimal fixed-point number. function div(uint256 x, uint256 y) internal pure returns (uint256 result) { result = PRBMath.mulDiv(x, SCALE, y); } /// @notice Returns Euler's number as an unsigned 60.18-decimal fixed-point number. /// @dev See https://en.wikipedia.org/wiki/E_(mathematical_constant). function e() internal pure returns (uint256 result) { result = 2_718281828459045235; } /// @notice Calculates the natural exponent of x. /// /// @dev Based on the insight that e^x = 2^(x * log2(e)). /// /// Requirements: /// - All from "log2". /// - x must be less than 133.084258667509499441. /// /// @param x The exponent as an unsigned 60.18-decimal fixed-point number. /// @return result The result as an unsigned 60.18-decimal fixed-point number. function exp(uint256 x) internal pure returns (uint256 result) { // Without this check, the value passed to "exp2" would be greater than 192. if (x >= 133_084258667509499441) { revert PRBMathUD60x18__ExpInputTooBig(x); } // Do the fixed-point multiplication inline to save gas. unchecked { uint256 doubleScaleProduct = x * LOG2_E; result = exp2((doubleScaleProduct + HALF_SCALE) / SCALE); } } /// @notice Calculates the binary exponent of x using the binary fraction method. /// /// @dev See https://ethereum.stackexchange.com/q/79903/24693. /// /// Requirements: /// - x must be 192 or less. /// - The result must fit within MAX_UD60x18. /// /// @param x The exponent as an unsigned 60.18-decimal fixed-point number. /// @return result The result as an unsigned 60.18-decimal fixed-point number. function exp2(uint256 x) internal pure returns (uint256 result) { // 2^192 doesn't fit within the 192.64-bit format used internally in this function. if (x >= 192e18) { revert PRBMathUD60x18__Exp2InputTooBig(x); } unchecked { // Convert x to the 192.64-bit fixed-point format. uint256 x192x64 = (x << 64) / SCALE; // Pass x to the PRBMath.exp2 function, which uses the 192.64-bit fixed-point number representation. result = PRBMath.exp2(x192x64); } } /// @notice Yields the greatest unsigned 60.18 decimal fixed-point number less than or equal to x. /// @dev Optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional counterparts. /// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions. /// @param x The unsigned 60.18-decimal fixed-point number to floor. /// @param result The greatest integer less than or equal to x, as an unsigned 60.18-decimal fixed-point number. function floor(uint256 x) internal pure returns (uint256 result) { assembly { // Equivalent to "x % SCALE" but faster. let remainder := mod(x, SCALE) // Equivalent to "x - remainder * (remainder > 0 ? 1 : 0)" but faster. result := sub(x, mul(remainder, gt(remainder, 0))) } } /// @notice Yields the excess beyond the floor of x. /// @dev Based on the odd function definition https://en.wikipedia.org/wiki/Fractional_part. /// @param x The unsigned 60.18-decimal fixed-point number to get the fractional part of. /// @param result The fractional part of x as an unsigned 60.18-decimal fixed-point number. function frac(uint256 x) internal pure returns (uint256 result) { assembly { result := mod(x, SCALE) } } /// @notice Converts a number from basic integer form to unsigned 60.18-decimal fixed-point representation. /// /// @dev Requirements: /// - x must be less than or equal to MAX_UD60x18 divided by SCALE. /// /// @param x The basic integer to convert. /// @param result The same number in unsigned 60.18-decimal fixed-point representation. function fromUint(uint256 x) internal pure returns (uint256 result) { unchecked { if (x > MAX_UD60x18 / SCALE) { revert PRBMathUD60x18__FromUintOverflow(x); } result = x * SCALE; } } /// @notice Calculates geometric mean of x and y, i.e. sqrt(x * y), rounding down. /// /// @dev Requirements: /// - x * y must fit within MAX_UD60x18, lest it overflows. /// /// @param x The first operand as an unsigned 60.18-decimal fixed-point number. /// @param y The second operand as an unsigned 60.18-decimal fixed-point number. /// @return result The result as an unsigned 60.18-decimal fixed-point number. function gm(uint256 x, uint256 y) internal pure returns (uint256 result) { if (x == 0) { return 0; } unchecked { // Checking for overflow this way is faster than letting Solidity do it. uint256 xy = x * y; if (xy / x != y) { revert PRBMathUD60x18__GmOverflow(x, y); } // We don't need to multiply by the SCALE here because the x*y product had already picked up a factor of SCALE // during multiplication. See the comments within the "sqrt" function. result = PRBMath.sqrt(xy); } } /// @notice Calculates 1 / x, rounding toward zero. /// /// @dev Requirements: /// - x cannot be zero. /// /// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the inverse. /// @return result The inverse as an unsigned 60.18-decimal fixed-point number. function inv(uint256 x) internal pure returns (uint256 result) { unchecked { // 1e36 is SCALE * SCALE. result = 1e36 / x; } } /// @notice Calculates the natural logarithm of x. /// /// @dev Based on the insight that ln(x) = log2(x) / log2(e). /// /// Requirements: /// - All from "log2". /// /// Caveats: /// - All from "log2". /// - This doesn't return exactly 1 for 2.718281828459045235, for that we would need more fine-grained precision. /// /// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the natural logarithm. /// @return result The natural logarithm as an unsigned 60.18-decimal fixed-point number. function ln(uint256 x) internal pure returns (uint256 result) { // Do the fixed-point multiplication inline to save gas. This is overflow-safe because the maximum value that log2(x) // can return is 196205294292027477728. unchecked { result = (log2(x) * SCALE) / LOG2_E; } } /// @notice Calculates the common logarithm of x. /// /// @dev First checks if x is an exact power of ten and it stops if yes. If it's not, calculates the common /// logarithm based on the insight that log10(x) = log2(x) / log2(10). /// /// Requirements: /// - All from "log2". /// /// Caveats: /// - All from "log2". /// /// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the common logarithm. /// @return result The common logarithm as an unsigned 60.18-decimal fixed-point number. function log10(uint256 x) internal pure returns (uint256 result) { if (x < SCALE) { revert PRBMathUD60x18__LogInputTooSmall(x); } // Note that the "mul" in this block is the assembly multiplication operation, not the "mul" function defined // in this contract. // prettier-ignore assembly { switch x case 1 { result := mul(SCALE, sub(0, 18)) } case 10 { result := mul(SCALE, sub(1, 18)) } case 100 { result := mul(SCALE, sub(2, 18)) } case 1000 { result := mul(SCALE, sub(3, 18)) } case 10000 { result := mul(SCALE, sub(4, 18)) } case 100000 { result := mul(SCALE, sub(5, 18)) } case 1000000 { result := mul(SCALE, sub(6, 18)) } case 10000000 { result := mul(SCALE, sub(7, 18)) } case 100000000 { result := mul(SCALE, sub(8, 18)) } case 1000000000 { result := mul(SCALE, sub(9, 18)) } case 10000000000 { result := mul(SCALE, sub(10, 18)) } case 100000000000 { result := mul(SCALE, sub(11, 18)) } case 1000000000000 { result := mul(SCALE, sub(12, 18)) } case 10000000000000 { result := mul(SCALE, sub(13, 18)) } case 100000000000000 { result := mul(SCALE, sub(14, 18)) } case 1000000000000000 { result := mul(SCALE, sub(15, 18)) } case 10000000000000000 { result := mul(SCALE, sub(16, 18)) } case 100000000000000000 { result := mul(SCALE, sub(17, 18)) } case 1000000000000000000 { result := 0 } case 10000000000000000000 { result := SCALE } case 100000000000000000000 { result := mul(SCALE, 2) } case 1000000000000000000000 { result := mul(SCALE, 3) } case 10000000000000000000000 { result := mul(SCALE, 4) } case 100000000000000000000000 { result := mul(SCALE, 5) } case 1000000000000000000000000 { result := mul(SCALE, 6) } case 10000000000000000000000000 { result := mul(SCALE, 7) } case 100000000000000000000000000 { result := mul(SCALE, 8) } case 1000000000000000000000000000 { result := mul(SCALE, 9) } case 10000000000000000000000000000 { result := mul(SCALE, 10) } case 100000000000000000000000000000 { result := mul(SCALE, 11) } case 1000000000000000000000000000000 { result := mul(SCALE, 12) } case 10000000000000000000000000000000 { result := mul(SCALE, 13) } case 100000000000000000000000000000000 { result := mul(SCALE, 14) } case 1000000000000000000000000000000000 { result := mul(SCALE, 15) } case 10000000000000000000000000000000000 { result := mul(SCALE, 16) } case 100000000000000000000000000000000000 { result := mul(SCALE, 17) } case 1000000000000000000000000000000000000 { result := mul(SCALE, 18) } case 10000000000000000000000000000000000000 { result := mul(SCALE, 19) } case 100000000000000000000000000000000000000 { result := mul(SCALE, 20) } case 1000000000000000000000000000000000000000 { result := mul(SCALE, 21) } case 10000000000000000000000000000000000000000 { result := mul(SCALE, 22) } case 100000000000000000000000000000000000000000 { result := mul(SCALE, 23) } case 1000000000000000000000000000000000000000000 { result := mul(SCALE, 24) } case 10000000000000000000000000000000000000000000 { result := mul(SCALE, 25) } case 100000000000000000000000000000000000000000000 { result := mul(SCALE, 26) } case 1000000000000000000000000000000000000000000000 { result := mul(SCALE, 27) } case 10000000000000000000000000000000000000000000000 { result := mul(SCALE, 28) } case 100000000000000000000000000000000000000000000000 { result := mul(SCALE, 29) } case 1000000000000000000000000000000000000000000000000 { result := mul(SCALE, 30) } case 10000000000000000000000000000000000000000000000000 { result := mul(SCALE, 31) } case 100000000000000000000000000000000000000000000000000 { result := mul(SCALE, 32) } case 1000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 33) } case 10000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 34) } case 100000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 35) } case 1000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 36) } case 10000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 37) } case 100000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 38) } case 1000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 39) } case 10000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 40) } case 100000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 41) } case 1000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 42) } case 10000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 43) } case 100000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 44) } case 1000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 45) } case 10000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 46) } case 100000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 47) } case 1000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 48) } case 10000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 49) } case 100000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 50) } case 1000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 51) } case 10000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 52) } case 100000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 53) } case 1000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 54) } case 10000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 55) } case 100000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 56) } case 1000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 57) } case 10000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 58) } case 100000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 59) } default { result := MAX_UD60x18 } } if (result == MAX_UD60x18) { // Do the fixed-point division inline to save gas. The denominator is log2(10). unchecked { result = (log2(x) * SCALE) / 3_321928094887362347; } } } /// @notice Calculates the binary logarithm of x. /// /// @dev Based on the iterative approximation algorithm. /// https://en.wikipedia.org/wiki/Binary_logarithm#Iterative_approximation /// /// Requirements: /// - x must be greater than or equal to SCALE, otherwise the result would be negative. /// /// Caveats: /// - The results are nor perfectly accurate to the last decimal, due to the lossy precision of the iterative approximation. /// /// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the binary logarithm. /// @return result The binary logarithm as an unsigned 60.18-decimal fixed-point number. function log2(uint256 x) internal pure returns (uint256 result) { if (x < SCALE) { revert PRBMathUD60x18__LogInputTooSmall(x); } unchecked { // Calculate the integer part of the logarithm and add it to the result and finally calculate y = x * 2^(-n). uint256 n = PRBMath.mostSignificantBit(x / SCALE); // The integer part of the logarithm as an unsigned 60.18-decimal fixed-point number. The operation can't overflow // because n is maximum 255 and SCALE is 1e18. result = n * SCALE; // This is y = x * 2^(-n). uint256 y = x >> n; // If y = 1, the fractional part is zero. if (y == SCALE) { return result; } // Calculate the fractional part via the iterative approximation. // The "delta >>= 1" part is equivalent to "delta /= 2", but shifting bits is faster. for (uint256 delta = HALF_SCALE; delta > 0; delta >>= 1) { y = (y * y) / SCALE; // Is y^2 > 2 and so in the range [2,4)? if (y >= 2 * SCALE) { // Add the 2^(-m) factor to the logarithm. result += delta; // Corresponds to z/2 on Wikipedia. y >>= 1; } } } } /// @notice Multiplies two unsigned 60.18-decimal fixed-point numbers together, returning a new unsigned 60.18-decimal /// fixed-point number. /// @dev See the documentation for the "PRBMath.mulDivFixedPoint" function. /// @param x The multiplicand as an unsigned 60.18-decimal fixed-point number. /// @param y The multiplier as an unsigned 60.18-decimal fixed-point number. /// @return result The product as an unsigned 60.18-decimal fixed-point number. function mul(uint256 x, uint256 y) internal pure returns (uint256 result) { result = PRBMath.mulDivFixedPoint(x, y); } /// @notice Returns PI as an unsigned 60.18-decimal fixed-point number. function pi() internal pure returns (uint256 result) { result = 3_141592653589793238; } /// @notice Raises x to the power of y. /// /// @dev Based on the insight that x^y = 2^(log2(x) * y). /// /// Requirements: /// - All from "exp2", "log2" and "mul". /// /// Caveats: /// - All from "exp2", "log2" and "mul". /// - Assumes 0^0 is 1. /// /// @param x Number to raise to given power y, as an unsigned 60.18-decimal fixed-point number. /// @param y Exponent to raise x to, as an unsigned 60.18-decimal fixed-point number. /// @return result x raised to power y, as an unsigned 60.18-decimal fixed-point number. function pow(uint256 x, uint256 y) internal pure returns (uint256 result) { if (x == 0) { result = y == 0 ? SCALE : uint256(0); } else { result = exp2(mul(log2(x), y)); } } /// @notice Raises x (unsigned 60.18-decimal fixed-point number) to the power of y (basic unsigned integer) using the /// famous algorithm "exponentiation by squaring". /// /// @dev See https://en.wikipedia.org/wiki/Exponentiation_by_squaring /// /// Requirements: /// - The result must fit within MAX_UD60x18. /// /// Caveats: /// - All from "mul". /// - Assumes 0^0 is 1. /// /// @param x The base as an unsigned 60.18-decimal fixed-point number. /// @param y The exponent as an uint256. /// @return result The result as an unsigned 60.18-decimal fixed-point number. function powu(uint256 x, uint256 y) internal pure returns (uint256 result) { // Calculate the first iteration of the loop in advance. result = y & 1 > 0 ? x : SCALE; // Equivalent to "for(y /= 2; y > 0; y /= 2)" but faster. for (y >>= 1; y > 0; y >>= 1) { x = PRBMath.mulDivFixedPoint(x, x); // Equivalent to "y % 2 == 1" but faster. if (y & 1 > 0) { result = PRBMath.mulDivFixedPoint(result, x); } } } /// @notice Returns 1 as an unsigned 60.18-decimal fixed-point number. function scale() internal pure returns (uint256 result) { result = SCALE; } /// @notice Calculates the square root of x, rounding down. /// @dev Uses the Babylonian method https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method. /// /// Requirements: /// - x must be less than MAX_UD60x18 / SCALE. /// /// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the square root. /// @return result The result as an unsigned 60.18-decimal fixed-point . function sqrt(uint256 x) internal pure returns (uint256 result) { unchecked { if (x > MAX_UD60x18 / SCALE) { revert PRBMathUD60x18__SqrtOverflow(x); } // Multiply x by the SCALE to account for the factor of SCALE that is picked up when multiplying two unsigned // 60.18-decimal fixed-point numbers together (in this case, those two numbers are both the square root). result = PRBMath.sqrt(x * SCALE); } } /// @notice Converts a unsigned 60.18-decimal fixed-point number to basic integer form, rounding down in the process. /// @param x The unsigned 60.18-decimal fixed-point number to convert. /// @return result The same number in basic integer form. function toUint(uint256 x) internal pure returns (uint256 result) { unchecked { result = x / SCALE; } } }
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Contract Security Audit
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[{"inputs":[{"internalType":"contract IERC20","name":"_stakingToken","type":"address"},{"internalType":"contract IPoolPositionAndRewardFactorySlim","name":"_rewardFactory","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"DurationOutOfBounds","type":"error"},{"inputs":[{"internalType":"address","name":"rewardTokenAddress","type":"address"}],"name":"NotValidRewardToken","type":"error"},{"inputs":[],"name":"OnlyFactoryOwner","type":"error"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minimumAmount","type":"uint256"}],"name":"RewardAmountBelowThreshold","type":"error"},{"inputs":[{"internalType":"uint8","name":"rewardTokenIndex","type":"uint8"}],"name":"RewardStillActive","type":"error"},{"inputs":[{"internalType":"uint8","name":"rewardTokenIndex","type":"uint8"}],"name":"StaleToken","type":"error"},{"inputs":[{"internalType":"uint8","name":"rewardTokenIndex","type":"uint8"}],"name":"TokenNotStale","type":"error"},{"inputs":[],"name":"TooManyRewardTokens","type":"error"},{"inputs":[],"name":"ZeroAmount","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"rewardTokenAddress","type":"address"},{"indexed":false,"internalType":"uint8","name":"rewardTokenIndex","type":"uint8"}],"name":"AddRewardToken","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint8","name":"rewardTokenIndex","type":"uint8"},{"indexed":false,"internalType":"address","name":"rewardTokenAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"rewardPaid","type":"uint256"}],"name":"GetReward","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"rewardTokenAddress","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"duration","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardRate","type":"uint256"}],"name":"NotifyRewardAmount","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"rewardTokenAddress","type":"address"},{"indexed":false,"internalType":"uint8","name":"rewardTokenIndex","type":"uint8"}],"name":"RemoveRewardToken","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"supplier","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"userBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalSupply","type":"uint256"}],"name":"Stake","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"userBalance","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalSupply","type":"uint256"}],"name":"UnStake","type":"event"},{"inputs":[],"name":"MAX_REWARD_TOKENS","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"earned","outputs":[{"components":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"earned","type":"uint256"},{"internalType":"contract IERC20","name":"rewardToken","type":"address"}],"internalType":"struct IReward.EarnedInfo[]","name":"earnedInfo","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"rewardTokenAddress","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint8[]","name":"rewardTokenIndices","type":"uint8[]"}],"name":"getReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint8","name":"rewardTokenIndex","type":"uint8"}],"name":"getReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"globalActive","outputs":[{"internalType":"uint256","name":"_data","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"rewardTokenAddress","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"notifyAndTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"rewardTokenIndex","type":"uint8"}],"name":"removeStaleToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"rewardData","outputs":[{"internalType":"uint256","name":"finishAt","type":"uint256"},{"internalType":"uint256","name":"updatedAt","type":"uint256"},{"internalType":"uint256","name":"rewardRate","type":"uint256"},{"internalType":"uint256","name":"rewardPerTokenStored","type":"uint256"},{"internalType":"uint256","name":"escrowedReward","type":"uint256"},{"internalType":"uint256","name":"globalResetCount","type":"uint256"},{"internalType":"contract IERC20","name":"rewardToken","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardFactory","outputs":[{"internalType":"contract IPoolPositionAndRewardFactorySlim","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardInfo","outputs":[{"components":[{"internalType":"uint256","name":"finishAt","type":"uint256"},{"internalType":"uint256","name":"updatedAt","type":"uint256"},{"internalType":"uint256","name":"rewardRate","type":"uint256"},{"internalType":"uint256","name":"rewardPerTokenStored","type":"uint256"},{"internalType":"contract IERC20","name":"rewardToken","type":"address"}],"internalType":"struct IReward.RewardInfo[]","name":"info","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"account","type":"address"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakingToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"tokenIndex","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"unstake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"unstakeAll","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000a2b4e72a9d2d3252da335cb50e393f44a9f104ee0000000000000000000000004f24d73773fcce560f4fd641125c23a2b93fcb05
-----Decoded View---------------
Arg [0] : _stakingToken (address): 0xa2B4e72A9d2d3252DA335cB50e393f44a9f104eE
Arg [1] : _rewardFactory (address): 0x4F24D73773fCcE560f4fD641125c23A2B93Fcb05
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000a2b4e72a9d2d3252da335cb50e393f44a9f104ee
Arg [1] : 0000000000000000000000004f24d73773fcce560f4fd641125c23a2b93fcb05
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.