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Contract Source Code Verified (Exact Match)
Contract Name:
FeeDistributorFactory
Compiler Version
v0.8.28+commit.7893614a
Optimization Enabled:
Yes with 1633 runs
Other Settings:
cancun EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.26; import {FeeDistributor} from "./../FeeDistributor.sol"; contract FeeDistributorFactory { address public lastFeeDistributor; function createFeeDistributor( address feeRecipient ) external returns (address) { lastFeeDistributor = address( new FeeDistributor(msg.sender, feeRecipient) ); return lastFeeDistributor; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.24; import {Math} from "@openzeppelin/contracts/utils/math/Math.sol"; import {IERC20} from "@openzeppelin/contracts/interfaces/IERC20.sol"; import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import {EnumerableSet} from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import {IFeeDistributor} from "./interfaces/IFeeDistributor.sol"; import {IVoter} from "./interfaces/IVoter.sol"; import {IVoteModule} from "./interfaces/IVoteModule.sol"; import {ILauncherPlugin} from "./interfaces/ILauncherPlugin.sol"; contract FeeDistributor is IFeeDistributor, ReentrancyGuard { using EnumerableSet for EnumerableSet.AddressSet; /// @inheritdoc IFeeDistributor address public immutable voter; /// @inheritdoc IFeeDistributor address public immutable voteModule; /// @inheritdoc IFeeDistributor address public immutable feeRecipient; /// @inheritdoc IFeeDistributor uint256 public immutable firstPeriod; /// @dev fetch through: Voter-> LauncherPlugin ILauncherPlugin public immutable plugin; /// @inheritdoc IFeeDistributor mapping(address owner => uint256 amount) public balanceOf; /// @inheritdoc IFeeDistributor mapping(uint256 period => uint256 weight) public votes; /// @notice period => user => amount mapping(uint256 period => mapping(address owner => uint256 weight)) public userVotes; /// @notice period => token => total supply mapping(uint256 period => mapping(address token => uint256 amount)) public rewardSupply; /// @notice period => user => token => amount mapping(uint256 period => mapping(address owner => mapping(address token => uint256 amount))) public userClaimed; /// @notice token => user => period mapping(address token => mapping(address owner => uint256 period)) public lastClaimByToken; EnumerableSet.AddressSet rewards; constructor(address _voter, address _feeRecipient) { /// @dev initialize voter voter = _voter; /// @dev initialize the plugin plugin = ILauncherPlugin(IVoter(_voter).launcherPlugin()); /// @dev fetch and initialize voteModule via voter voteModule = IVoter(_voter).voteModule(); /// @dev set the firstPeriod as the current firstPeriod = getPeriod(); /// @dev initialize the feeRecipient feeRecipient = _feeRecipient; } /// @inheritdoc IFeeDistributor function _deposit(uint256 amount, address owner) external { /// @dev gate to the voter require(msg.sender == voter, NOT_AUTHORIZED()); /// @dev fetch the next period (voting power slot) uint256 nextPeriod = getPeriod() + 1; /// @dev fetch the voting "balance" of the owner balanceOf[owner] += amount; /// @dev add the vote power to the cumulative votes[nextPeriod] += amount; /// @dev add to the owner's vote mapping userVotes[nextPeriod][owner] += amount; emit Deposit(owner, amount); } /// @inheritdoc IFeeDistributor function _withdraw(uint256 amount, address owner) external { /// @dev gate to the voter require(msg.sender == voter, NOT_AUTHORIZED()); /// @dev fetch the next period (voting power slot) uint256 nextPeriod = getPeriod() + 1; /// @dev decrement the mapping by withdrawal amount balanceOf[owner] -= amount; /// @dev check if the owner has any votes cast if (userVotes[nextPeriod][owner] > 0) { /// @dev if so -- decrement vote by amount userVotes[nextPeriod][owner] -= amount; /// @dev and decrement cumulative votes votes[nextPeriod] -= amount; } emit Withdraw(owner, amount); } /// @inheritdoc IFeeDistributor /// @dev specific to periods rather than all function getPeriodReward( uint256 period, address owner, address token ) external nonReentrant { /// @dev check that msg.sender is privileged require( IVoteModule(voteModule).isAdminFor(msg.sender, owner), NOT_AUTHORIZED() ); /// @dev claim to msg.sender _getReward(period, owner, token, msg.sender); lastClaimByToken[token][owner] = period - 1; } /// @inheritdoc IFeeDistributor function getReward( address owner, address[] memory tokens ) external nonReentrant { /// @dev check that msg.sender is privileged require( IVoteModule(voteModule).isAdminFor(msg.sender, owner), NOT_AUTHORIZED() ); /// @dev send to msg.sender (IMPORTANT: ensure these privileges are handled appropriately) _getAllRewards(owner, tokens, msg.sender); } /// @inheritdoc IFeeDistributor /// @dev used by Voter to allow batched reward claims function getRewardForOwner( address owner, address[] memory tokens ) external nonReentrant { /// @dev gate to voter require(msg.sender == voter, NOT_AUTHORIZED()); /// @dev call on behalf of owner _getAllRewards(owner, tokens, owner); } /// @inheritdoc IFeeDistributor function notifyRewardAmount( address token, uint256 amount ) external nonReentrant { /// @dev limit to feeRecipient (feeCollector in CL) require(msg.sender == feeRecipient, NOT_AUTHORIZED()); /// @dev prevent spam require(amount != 0, ZERO_AMOUNT()); /// @dev ensure the token is whitelisted (should never fail since the fees would be pushed) require(IVoter(voter).isWhitelisted(token), IVoter.NOT_WHITELISTED()); /// @dev declare the next period (epoch) uint256 nextPeriod = getPeriod() + 1; /// @dev if all the prior checks pass, we can add the token to the rewards set rewards.add(token); /** LAUNCHPAD CONFIGS **/ /// @dev if part of a launcher system if (_enabledLauncherConfig()) { /// @dev set config values /// @dev this is OK if the configs are not set, as we handle zeroing it out later (uint256 _take, address _recipient) = plugin.values(address(this)); /// @dev 10_000 is the denom of 100% uint256 send = (amount * _take) / 10_000; /// @dev send fee to launcher recipient if (send != 0) { _safeTransferFrom(token, msg.sender, _recipient, send); /// @dev deduct from voter-earned fees to prevent a shortfall amount -= send; } } /** END LAUNCHPAD CONFIGS **/ /// @dev logic for handling tax tokens via legacy /// @dev V3 (CL) does not support tax or non-typical ERC20 implementations so this is null in those cases uint256 balanceBefore = IERC20(token).balanceOf(address(this)); _safeTransferFrom(token, msg.sender, address(this), amount); uint256 balanceAfter = IERC20(token).balanceOf(address(this)); /// @dev only count the amount actually within the contract amount = balanceAfter - balanceBefore; /// @dev increase rewards for "nextPeriod" rewardSupply[nextPeriod][token] += amount; /// @dev emit event for fees notified to feeDist emit NotifyReward(msg.sender, token, amount, nextPeriod); } /// @inheritdoc IFeeDistributor /// @dev submit voting incentives to the FeeDistributor function incentivize(address token, uint256 amount) external nonReentrant { /// @dev prevent spam require(amount != 0, ZERO_AMOUNT()); /// @dev ensure whitelisted to prevent garbage from stuffing the arrays require(IVoter(voter).isWhitelisted(token), IVoter.NOT_WHITELISTED()); /// @dev declare the reward period uint256 nextPeriod = getPeriod() + 1; /// @dev add to the rewards set rewards.add(token); /// @dev logic for handling tax tokens as bribes uint256 balanceBefore = IERC20(token).balanceOf(address(this)); _safeTransferFrom(token, msg.sender, address(this), amount); uint256 balanceAfter = IERC20(token).balanceOf(address(this)); /// @dev only count the amount actually within the contract amount = balanceAfter - balanceBefore; /// @dev increase rewards for "nextPeriod" rewardSupply[nextPeriod][token] += amount; /// @dev emit event for incentives "bribed" to feeDist emit VotesIncentivized(msg.sender, token, amount, nextPeriod); } /// @inheritdoc IFeeDistributor /// @dev for the voter to remove spam rewards function removeReward(address _token) external { /// @dev limit to voter only require(msg.sender == voter, NOT_AUTHORIZED()); /// @dev remove the token from the rewards set rewards.remove(_token); /// @dev emit the address of the token removed emit RewardsRemoved(_token); } /// @inheritdoc IFeeDistributor function getRewardTokens() external view returns (address[] memory _rewards) { /// @dev return the values from the set /// @dev to prevent unbound expansion removeReward() is to be used when necessary _rewards = rewards.values(); } /// @inheritdoc IFeeDistributor function earned( address token, address owner ) external view returns (uint256 reward) { /// @dev fetch the current period uint256 currentPeriod = getPeriod(); /// @dev gather the last claim timestamp or the firstPeriod if no claim yet uint256 lastClaim = Math.max( lastClaimByToken[token][owner], firstPeriod ); /// @dev loop from the lastClaim up to and including the current period for (uint256 period = lastClaim; period <= currentPeriod; ++period) { /// @dev if there are votes for the period if (votes[period] != 0) { /// @dev fetch rewardSupply scaled to weight uint256 votesWeight = (userVotes[period][owner] * 1e18) / votes[period]; reward += (rewardSupply[period][token] * votesWeight) / 1e18; /// @dev remove already claimed rewards to prevent shortfalls and over-rewarding reward -= userClaimed[period][owner][token]; } } } /// @notice general read function for grabbing the current period (epoch) function getPeriod() public view returns (uint256) { return (block.timestamp / 1 weeks); } /// @dev a core internal function for claiming rewards function _getReward( uint256 period, address owner, address token, address receiver ) internal { /// @dev prevent claiming from periods that are not yet finalized require(period <= getPeriod(), NOT_FINALIZED()); /// @dev if there are any votes in the period if (votes[period] != 0) { uint256 votesWeight = (userVotes[period][owner] * 1e18) / votes[period]; uint256 _reward = (rewardSupply[period][token] * votesWeight) / 1e18; /// @dev remove previous claims _reward -= userClaimed[period][owner][token]; /// @dev add the upcoming claim to the mapping preemptively userClaimed[period][owner][token] += _reward; /// @dev if there exists some rewards after removing previous claims if (_reward > 0) { _safeTransfer(token, receiver, _reward); emit ClaimRewards(period, owner, receiver, token, _reward); } } } function _getAllRewards( address owner, address[] memory tokens, address receiver ) internal { /// @dev fetch the current period uint256 currentPeriod = getPeriod(); /// @dev placeholder uint256 lastClaim; /// @dev loop through all tokens in the array for (uint256 i = 0; i < tokens.length; ++i) { /// @dev fetch lastClaim lastClaim = Math.max( lastClaimByToken[tokens[i]][owner], firstPeriod ); /// @dev nested loop starting from the lastClaim to up to and including the current period for ( uint256 period = lastClaim; period <= currentPeriod; ++period ) { /// @dev call _getReward per each token _getReward(period, owner, tokens[i], receiver); } /// @dev we set the previous period as the last claim to follow the for-loop scheme lastClaimByToken[tokens[i]][owner] = currentPeriod - 1; } } /// @dev internal function for fetching the the current launcher config status from voter function _enabledLauncherConfig() internal view returns (bool _enabled) { /// @dev if the pool has the launcher configs enabled return true _enabled = plugin.launcherPluginEnabled( plugin.feeDistToPool(address(this)) ); } /** internal safe transfer functions */ function _safeTransfer(address token, address to, uint256 value) internal { require( token.code.length > 0, TOKEN_ERROR( token ) /* throw address of the token as a custom error to help with debugging */ ); (bool success, bytes memory data) = token.call( abi.encodeWithSelector(IERC20.transfer.selector, to, value) ); require( success && (data.length == 0 || abi.decode(data, (bool))), TOKEN_ERROR( token ) /* throw address of the token as a custom error to help with debugging */ ); } function _safeTransferFrom( address token, address from, address to, uint256 value ) internal { require( token.code.length > 0, TOKEN_ERROR( token ) /* throw address of the token as a custom error to help with debugging */ ); (bool success, bytes memory data) = token.call( abi.encodeWithSelector( IERC20.transferFrom.selector, from, to, value ) ); require( success && (data.length == 0 || abi.decode(data, (bool))), TOKEN_ERROR( token ) /* throw address of the token as a custom error to help with debugging */ ); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/math/Math.sol) pragma solidity ^0.8.20; import {Panic} from "../Panic.sol"; import {SafeCast} from "./SafeCast.sol"; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Floor, // Toward negative infinity Ceil, // Toward positive infinity Trunc, // Toward zero Expand // Away from zero } /** * @dev Returns the addition of two unsigned integers, with an success flag (no overflow). */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an success flag (no overflow). */ function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an success flag (no overflow). */ function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a success flag (no division by zero). */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero). */ function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant. * * IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone. * However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute * one branch when needed, making this function more expensive. */ function ternary(bool condition, uint256 a, uint256 b) internal pure returns (uint256) { unchecked { // branchless ternary works because: // b ^ (a ^ b) == a // b ^ 0 == b return b ^ ((a ^ b) * SafeCast.toUint(condition)); } } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return ternary(a > b, a, b); } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return ternary(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 towards infinity instead * of rounding towards zero. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { if (b == 0) { // Guarantee the same behavior as in a regular Solidity division. Panic.panic(Panic.DIVISION_BY_ZERO); } // The following calculation ensures accurate ceiling division without overflow. // Since a is non-zero, (a - 1) / b will not overflow. // The largest possible result occurs when (a - 1) / b is type(uint256).max, // but the largest value we can obtain is type(uint256).max - 1, which happens // when a = type(uint256).max and b = 1. unchecked { return SafeCast.toUint(a > 0) * ((a - 1) / b + 1); } } /** * @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or * denominator == 0. * * 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 2²⁵⁶ and mod 2²⁵⁶ - 1, then use // the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2²⁵⁶ + prod0. uint256 prod0 = x * y; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0. if (denominator <= prod1) { Panic.panic(ternary(denominator == 0, Panic.DIVISION_BY_ZERO, Panic.UNDER_OVERFLOW)); } /////////////////////////////////////////////// // 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. uint256 twos = denominator & (0 - denominator); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2²⁵⁶ / 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 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such // that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv ≡ 1 mod 2⁴. 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 2⁸ inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶ inverse *= 2 - denominator * inverse; // inverse mod 2³² inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴ inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸ inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶ // 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 2²⁵⁶. Since the preconditions guarantee that the outcome is // less than 2²⁵⁶, 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; } } /** * @dev 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) { return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0); } /** * @dev Calculate the modular multiplicative inverse of a number in Z/nZ. * * If n is a prime, then Z/nZ is a field. In that case all elements are inversible, except 0. * If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible. * * If the input value is not inversible, 0 is returned. * * NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Fermat's little theorem and get the * inverse using `Math.modExp(a, n - 2, n)`. See {invModPrime}. */ function invMod(uint256 a, uint256 n) internal pure returns (uint256) { unchecked { if (n == 0) return 0; // The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version) // Used to compute integers x and y such that: ax + ny = gcd(a, n). // When the gcd is 1, then the inverse of a modulo n exists and it's x. // ax + ny = 1 // ax = 1 + (-y)n // ax ≡ 1 (mod n) # x is the inverse of a modulo n // If the remainder is 0 the gcd is n right away. uint256 remainder = a % n; uint256 gcd = n; // Therefore the initial coefficients are: // ax + ny = gcd(a, n) = n // 0a + 1n = n int256 x = 0; int256 y = 1; while (remainder != 0) { uint256 quotient = gcd / remainder; (gcd, remainder) = ( // The old remainder is the next gcd to try. remainder, // Compute the next remainder. // Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd // where gcd is at most n (capped to type(uint256).max) gcd - remainder * quotient ); (x, y) = ( // Increment the coefficient of a. y, // Decrement the coefficient of n. // Can overflow, but the result is casted to uint256 so that the // next value of y is "wrapped around" to a value between 0 and n - 1. x - y * int256(quotient) ); } if (gcd != 1) return 0; // No inverse exists. return ternary(x < 0, n - uint256(-x), uint256(x)); // Wrap the result if it's negative. } } /** * @dev Variant of {invMod}. More efficient, but only works if `p` is known to be a prime greater than `2`. * * From https://en.wikipedia.org/wiki/Fermat%27s_little_theorem[Fermat's little theorem], we know that if p is * prime, then `a**(p-1) ≡ 1 mod p`. As a consequence, we have `a * a**(p-2) ≡ 1 mod p`, which means that * `a**(p-2)` is the modular multiplicative inverse of a in Fp. * * NOTE: this function does NOT check that `p` is a prime greater than `2`. */ function invModPrime(uint256 a, uint256 p) internal view returns (uint256) { unchecked { return Math.modExp(a, p - 2, p); } } /** * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m) * * Requirements: * - modulus can't be zero * - underlying staticcall to precompile must succeed * * IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make * sure the chain you're using it on supports the precompiled contract for modular exponentiation * at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, * the underlying function will succeed given the lack of a revert, but the result may be incorrectly * interpreted as 0. */ function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) { (bool success, uint256 result) = tryModExp(b, e, m); if (!success) { Panic.panic(Panic.DIVISION_BY_ZERO); } return result; } /** * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m). * It includes a success flag indicating if the operation succeeded. Operation will be marked as failed if trying * to operate modulo 0 or if the underlying precompile reverted. * * IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain * you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in * https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack * of a revert, but the result may be incorrectly interpreted as 0. */ function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) { if (m == 0) return (false, 0); assembly ("memory-safe") { let ptr := mload(0x40) // | Offset | Content | Content (Hex) | // |-----------|------------|--------------------------------------------------------------------| // | 0x00:0x1f | size of b | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x20:0x3f | size of e | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x40:0x5f | size of m | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x60:0x7f | value of b | 0x<.............................................................b> | // | 0x80:0x9f | value of e | 0x<.............................................................e> | // | 0xa0:0xbf | value of m | 0x<.............................................................m> | mstore(ptr, 0x20) mstore(add(ptr, 0x20), 0x20) mstore(add(ptr, 0x40), 0x20) mstore(add(ptr, 0x60), b) mstore(add(ptr, 0x80), e) mstore(add(ptr, 0xa0), m) // Given the result < m, it's guaranteed to fit in 32 bytes, // so we can use the memory scratch space located at offset 0. success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20) result := mload(0x00) } } /** * @dev Variant of {modExp} that supports inputs of arbitrary length. */ function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) { (bool success, bytes memory result) = tryModExp(b, e, m); if (!success) { Panic.panic(Panic.DIVISION_BY_ZERO); } return result; } /** * @dev Variant of {tryModExp} that supports inputs of arbitrary length. */ function tryModExp( bytes memory b, bytes memory e, bytes memory m ) internal view returns (bool success, bytes memory result) { if (_zeroBytes(m)) return (false, new bytes(0)); uint256 mLen = m.length; // Encode call args in result and move the free memory pointer result = abi.encodePacked(b.length, e.length, mLen, b, e, m); assembly ("memory-safe") { let dataPtr := add(result, 0x20) // Write result on top of args to avoid allocating extra memory. success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen) // Overwrite the length. // result.length > returndatasize() is guaranteed because returndatasize() == m.length mstore(result, mLen) // Set the memory pointer after the returned data. mstore(0x40, add(dataPtr, mLen)) } } /** * @dev Returns whether the provided byte array is zero. */ function _zeroBytes(bytes memory byteArray) private pure returns (bool) { for (uint256 i = 0; i < byteArray.length; ++i) { if (byteArray[i] != 0) { return false; } } return true; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded * towards zero. * * This method is based on Newton's method for computing square roots; the algorithm is restricted to only * using integer operations. */ function sqrt(uint256 a) internal pure returns (uint256) { unchecked { // Take care of easy edge cases when a == 0 or a == 1 if (a <= 1) { return a; } // In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a // sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between // the current value as `ε_n = | x_n - sqrt(a) |`. // // For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root // of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is // bigger than any uint256. // // By noticing that // `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)` // we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar // to the msb function. uint256 aa = a; uint256 xn = 1; if (aa >= (1 << 128)) { aa >>= 128; xn <<= 64; } if (aa >= (1 << 64)) { aa >>= 64; xn <<= 32; } if (aa >= (1 << 32)) { aa >>= 32; xn <<= 16; } if (aa >= (1 << 16)) { aa >>= 16; xn <<= 8; } if (aa >= (1 << 8)) { aa >>= 8; xn <<= 4; } if (aa >= (1 << 4)) { aa >>= 4; xn <<= 2; } if (aa >= (1 << 2)) { xn <<= 1; } // We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1). // // We can refine our estimation by noticing that the middle of that interval minimizes the error. // If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2). // This is going to be our x_0 (and ε_0) xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2) // From here, Newton's method give us: // x_{n+1} = (x_n + a / x_n) / 2 // // One should note that: // x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a // = ((x_n² + a) / (2 * x_n))² - a // = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a // = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²) // = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²) // = (x_n² - a)² / (2 * x_n)² // = ((x_n² - a) / (2 * x_n))² // ≥ 0 // Which proves that for all n ≥ 1, sqrt(a) ≤ x_n // // This gives us the proof of quadratic convergence of the sequence: // ε_{n+1} = | x_{n+1} - sqrt(a) | // = | (x_n + a / x_n) / 2 - sqrt(a) | // = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) | // = | (x_n - sqrt(a))² / (2 * x_n) | // = | ε_n² / (2 * x_n) | // = ε_n² / | (2 * x_n) | // // For the first iteration, we have a special case where x_0 is known: // ε_1 = ε_0² / | (2 * x_0) | // ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2))) // ≤ 2**(2*e-4) / (3 * 2**(e-1)) // ≤ 2**(e-3) / 3 // ≤ 2**(e-3-log2(3)) // ≤ 2**(e-4.5) // // For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n: // ε_{n+1} = ε_n² / | (2 * x_n) | // ≤ (2**(e-k))² / (2 * 2**(e-1)) // ≤ 2**(2*e-2*k) / 2**e // ≤ 2**(e-2*k) xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5) -- special case, see above xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9) -- general case with k = 4.5 xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18) -- general case with k = 9 xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36) -- general case with k = 18 xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72) -- general case with k = 36 xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144) -- general case with k = 72 // Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision // ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either // sqrt(a) or sqrt(a) + 1. return xn - SafeCast.toUint(xn > a / xn); } } /** * @dev Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a); } } /** * @dev Return the log in base 2 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; uint256 exp; unchecked { exp = 128 * SafeCast.toUint(value > (1 << 128) - 1); value >>= exp; result += exp; exp = 64 * SafeCast.toUint(value > (1 << 64) - 1); value >>= exp; result += exp; exp = 32 * SafeCast.toUint(value > (1 << 32) - 1); value >>= exp; result += exp; exp = 16 * SafeCast.toUint(value > (1 << 16) - 1); value >>= exp; result += exp; exp = 8 * SafeCast.toUint(value > (1 << 8) - 1); value >>= exp; result += exp; exp = 4 * SafeCast.toUint(value > (1 << 4) - 1); value >>= exp; result += exp; exp = 2 * SafeCast.toUint(value > (1 << 2) - 1); value >>= exp; result += exp; result += SafeCast.toUint(value > 1); } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value); } } /** * @dev Return the log in base 10 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value); } } /** * @dev Return the log in base 256 of a positive value rounded towards zero. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; uint256 isGt; unchecked { isGt = SafeCast.toUint(value > (1 << 128) - 1); value >>= isGt * 128; result += isGt * 16; isGt = SafeCast.toUint(value > (1 << 64) - 1); value >>= isGt * 64; result += isGt * 8; isGt = SafeCast.toUint(value > (1 << 32) - 1); value >>= isGt * 32; result += isGt * 4; isGt = SafeCast.toUint(value > (1 << 16) - 1); value >>= isGt * 16; result += isGt * 2; result += SafeCast.toUint(value > (1 << 8) - 1); } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value); } } /** * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers. */ function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) { return uint8(rounding) % 2 == 1; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../token/ERC20/IERC20.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol) pragma solidity ^0.8.20; /** * @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 EIP-1153 (transient storage) is available on the chain you're deploying at, * consider using {ReentrancyGuardTransient} instead. * * 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; /** * @dev Unauthorized reentrant call. */ error ReentrancyGuardReentrantCall(); constructor() { _status = NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be NOT_ENTERED if (_status == ENTERED) { revert ReentrancyGuardReentrantCall(); } // Any calls to nonReentrant after this point will fail _status = ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.20; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ```solidity * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position is the index of the value in the `values` array plus 1. // Position 0 is used to mean a value is not in the set. mapping(bytes32 value => uint256) _positions; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._positions[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We cache the value's position to prevent multiple reads from the same storage slot uint256 position = set._positions[value]; if (position != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 valueIndex = position - 1; uint256 lastIndex = set._values.length - 1; if (valueIndex != lastIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the lastValue to the index where the value to delete is set._values[valueIndex] = lastValue; // Update the tracked position of the lastValue (that was just moved) set._positions[lastValue] = position; } // Delete the slot where the moved value was stored set._values.pop(); // Delete the tracked position for the deleted slot delete set._positions[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._positions[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; assembly ("memory-safe") { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; assembly ("memory-safe") { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; assembly ("memory-safe") { result := store } return result; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.26; interface IFeeDistributor { error NOT_AUTHORIZED(); error ZERO_AMOUNT(); error NOT_FINALIZED(); error TOKEN_ERROR(address); event Deposit(address owner, uint256 amount); event Withdraw(address owner, uint256 amount); event NotifyReward( address indexed from, address indexed reward, uint256 amount, uint256 period ); event VotesIncentivized( address indexed from, address indexed reward, uint256 amount, uint256 period ); event ClaimRewards( uint256 period, address owner, address receiver, address reward, uint256 amount ); event RewardsRemoved(address _reward); /// @notice the address of the voter contract function voter() external view returns (address); /// @notice the address of the voting module function voteModule() external view returns (address); /// @notice the address of the feeRecipient contract function feeRecipient() external view returns (address); /// @notice the first period (epoch) that this contract was deployed function firstPeriod() external view returns (uint256); /// @notice balance of the voting power for a user /// @param owner the owner /// @return amount the amount of voting share function balanceOf(address owner) external view returns (uint256 amount); /// @notice total cumulative amount of voting power per epoch /// @param period the period to check /// @return weight the amount of total voting power function votes(uint256 period) external view returns (uint256 weight); /// @notice "internal" function gated to voter to add votes /// @dev internal notation inherited from original solidly, kept for continuity function _deposit(uint256 amount, address owner) external; /// @notice "internal" function gated to voter to remove votes /// @dev internal notation inherited from original solidly, kept for continuity function _withdraw(uint256 amount, address owner) external; /// @notice function to claim rewards on behalf of another /// @param owner owner's address /// @param tokens an array of the tokens function getRewardForOwner(address owner, address[] memory tokens) external; /// @notice function for sending fees directly to be claimable (in system where fees are distro'd through the week) /// @dev for lumpsum - this would operate similarly to incentivize /// @param token the address of the token to send for notifying /// @param amount the amount of token to send function notifyRewardAmount(address token, uint256 amount) external; /// @notice gives an array of reward tokens for the feedist /// @return _rewards array of rewards function getRewardTokens() external view returns (address[] memory _rewards); /// @notice shows the earned incentives in the feedist /// @param token the token address to check /// @param owner owner's address /// @return reward the amount earned/claimable function earned( address token, address owner ) external view returns (uint256 reward); /// @notice function to submit incentives to voters for the upcoming flip /// @param token the address of the token to send for incentivization /// @param amount the amount of token to send function incentivize(address token, uint256 amount) external; /// @notice get the rewards for a specific period /// @param owner owner's address function getPeriodReward( uint256 period, address owner, address token ) external; /// @notice get the fees and incentives function getReward(address owner, address[] memory tokens) external; /// @notice remove a reward from the set function removeReward(address _token) external; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.26; pragma abicoder v2; interface IVoter { error ACTIVE_GAUGE(address gauge); error GAUGE_INACTIVE(address gauge); error ALREADY_WHITELISTED(address token); error NOT_AUTHORIZED(address caller); error NOT_WHITELISTED(); error NOT_POOL(); error NOT_INIT(); error LENGTH_MISMATCH(); error NO_GAUGE(); error ALREADY_DISTRIBUTED(address gauge, uint256 period); error ZERO_VOTE(address pool); error RATIO_TOO_HIGH(uint256 _xRatio); error VOTE_UNSUCCESSFUL(); event GaugeCreated( address indexed gauge, address creator, address feeDistributor, address indexed pool ); event GaugeKilled(address indexed gauge); event GaugeRevived(address indexed gauge); event Voted(address indexed owner, uint256 weight, address indexed pool); event Abstained(address indexed owner, uint256 weight); event Deposit( address indexed lp, address indexed gauge, address indexed owner, uint256 amount ); event Withdraw( address indexed lp, address indexed gauge, address indexed owner, uint256 amount ); event NotifyReward( address indexed sender, address indexed reward, uint256 amount ); event DistributeReward( address indexed sender, address indexed gauge, uint256 amount ); event EmissionsRatio( address indexed caller, uint256 oldRatio, uint256 newRatio ); event NewGovernor(address indexed sender, address indexed governor); event Whitelisted(address indexed whitelister, address indexed token); event WhitelistRevoked( address indexed forbidder, address indexed token, bool status ); event MainTickSpacingChanged( address indexed token0, address indexed token1, int24 indexed newMainTickSpacing ); event Poke(address indexed user); function initialize( address _emissionsToken, address _legacyFactory, address _gauges, address _feeDistributorFactory, address _minter, address _msig, address _xShadow, address _clFactory, address _clGaugeFactory, address _nfpManager, address _feeRecipientFactory, address _voteModule, address _launcherPlugin ) external; /// @notice denominator basis function BASIS() external view returns (uint256); /// @notice ratio of xShadow emissions globally function xRatio() external view returns (uint256); /// @notice xShadow contract address function xShadow() external view returns (address); /// @notice legacy factory address (uni-v2/stableswap) function legacyFactory() external view returns (address); /// @notice concentrated liquidity factory function clFactory() external view returns (address); /// @notice gauge factory for CL function clGaugeFactory() external view returns (address); /// @notice legacy fee recipient factory function feeRecipientFactory() external view returns (address); /// @notice peripheral NFPManager contract function nfpManager() external view returns (address); /// @notice returns the address of the current governor /// @return _governor address of the governor function governor() external view returns (address _governor); /// @notice the address of the vote module /// @return _voteModule the vote module contract address function voteModule() external view returns (address _voteModule); /// @notice address of the central access Hub function accessHub() external view returns (address); /// @notice the address of the shadow launcher plugin to enable third party launchers /// @return _launcherPlugin the address of the plugin function launcherPlugin() external view returns (address _launcherPlugin); /// @notice distributes emissions from the minter to the voter /// @param amount the amount of tokens to notify function notifyRewardAmount(uint256 amount) external; /// @notice distributes the emissions for a specific gauge /// @param _gauge the gauge address function distribute(address _gauge) external; /// @notice returns the address of the gauge factory /// @param _gaugeFactory gauge factory address function gaugeFactory() external view returns (address _gaugeFactory); /// @notice returns the address of the feeDistributor factory /// @return _feeDistributorFactory feeDist factory address function feeDistributorFactory() external view returns (address _feeDistributorFactory); /// @notice returns the address of the minter contract /// @return _minter address of the minter function minter() external view returns (address _minter); /// @notice check if the gauge is active for governance use /// @param _gauge address of the gauge /// @return _trueOrFalse if the gauge is alive function isAlive(address _gauge) external view returns (bool _trueOrFalse); /// @notice allows the token to be paired with other whitelisted assets to participate in governance /// @param _token the address of the token function whitelist(address _token) external; /// @notice effectively disqualifies a token from governance /// @param _token the address of the token function revokeWhitelist(address _token) external; /// @notice returns if the address is a gauge /// @param gauge address of the gauge /// @return _trueOrFalse boolean if the address is a gauge function isGauge(address gauge) external view returns (bool _trueOrFalse); /// @notice disable a gauge from governance /// @param _gauge address of the gauge function killGauge(address _gauge) external; /// @notice re-activate a dead gauge /// @param _gauge address of the gauge function reviveGauge(address _gauge) external; /// @notice re-cast a tokenID's votes /// @param owner address of the owner function poke(address owner) external; /// @notice sets the main tickspacing of a token pairing /// @param tokenA address of tokenA /// @param tokenB address of tokenB /// @param tickSpacing the main tickspacing to set to function setMainTickSpacing( address tokenA, address tokenB, int24 tickSpacing ) external; /// @notice returns if the address is a fee distributor /// @param _feeDistributor address of the feeDist /// @return _trueOrFalse if the address is a fee distributor function isFeeDistributor( address _feeDistributor ) external view returns (bool _trueOrFalse); /// @notice returns the address of the emission's token /// @return _emissionsToken emissions token contract address function emissionsToken() external view returns (address _emissionsToken); /// @notice returns the address of the pool's gauge, if any /// @param _pool pool address /// @return _gauge gauge address function gaugeForPool(address _pool) external view returns (address _gauge); /// @notice returns the address of the pool's feeDistributor, if any /// @param _gauge address of the gauge /// @return _feeDistributor address of the pool's feedist function feeDistributorForGauge( address _gauge ) external view returns (address _feeDistributor); /// @notice returns the new toPool that was redirected fromPool /// @param fromPool address of the original pool /// @return toPool the address of the redirected pool function poolRedirect( address fromPool ) external view returns (address toPool); /// @notice returns the gauge address of a CL pool /// @param tokenA address of token A in the pair /// @param tokenB address of token B in the pair /// @param tickSpacing tickspacing of the pool /// @return gauge address of the gauge function gaugeForClPool( address tokenA, address tokenB, int24 tickSpacing ) external view returns (address gauge); /// @notice returns the array of all tickspacings for the tokenA/tokenB combination /// @param tokenA address of token A in the pair /// @param tokenB address of token B in the pair /// @return _ts array of all the tickspacings function tickSpacingsForPair( address tokenA, address tokenB ) external view returns (int24[] memory _ts); /// @notice returns the main tickspacing used in the gauge/governance process /// @param tokenA address of token A in the pair /// @param tokenB address of token B in the pair /// @return _ts the main tickspacing function mainTickSpacingForPair( address tokenA, address tokenB ) external view returns (int24 _ts); /// @notice returns the block.timestamp divided by 1 week in seconds /// @return period the period used for gauges function getPeriod() external view returns (uint256 period); /// @notice cast a vote to direct emissions to gauges and earn incentives /// @param owner address of the owner /// @param _pools the list of pools to vote on /// @param _weights an arbitrary weight per pool which will be normalized to 100% regardless of numerical inputs function vote( address owner, address[] calldata _pools, uint256[] calldata _weights ) external; /// @notice reset the vote of an address /// @param owner address of the owner function reset(address owner) external; /// @notice set the governor address /// @param _governor the new governor address function setGovernor(address _governor) external; /// @notice recover stuck emissions /// @param _gauge the gauge address /// @param _period the period function stuckEmissionsRecovery(address _gauge, uint256 _period) external; /// @notice whitelists extra rewards for a gauge /// @param _gauge the gauge to whitelist rewards to /// @param _reward the reward to whitelist function whitelistGaugeRewards(address _gauge, address _reward) external; /// @notice removes a reward from the gauge whitelist /// @param _gauge the gauge to remove the whitelist from /// @param _reward the reward to remove from the whitelist function removeGaugeRewardWhitelist( address _gauge, address _reward ) external; /// @notice creates a legacy gauge for the pool /// @param _pool pool's address /// @return _gauge address of the new gauge function createGauge(address _pool) external returns (address _gauge); /// @notice create a concentrated liquidity gauge /// @param tokenA the address of tokenA /// @param tokenB the address of tokenB /// @param tickSpacing the tickspacing of the pool /// @return _clGauge address of the new gauge function createCLGauge( address tokenA, address tokenB, int24 tickSpacing ) external returns (address _clGauge); /// @notice claim concentrated liquidity gauge rewards for specific NFP token ids /// @param _gauges array of gauges /// @param _tokens two dimensional array for the tokens to claim /// @param _nfpTokenIds two dimensional array for the NFPs function claimClGaugeRewards( address[] calldata _gauges, address[][] calldata _tokens, uint256[][] calldata _nfpTokenIds ) external; /// @notice claim arbitrary rewards from specific feeDists /// @param owner address of the owner /// @param _feeDistributors address of the feeDists /// @param _tokens two dimensional array for the tokens to claim function claimIncentives( address owner, address[] calldata _feeDistributors, address[][] calldata _tokens ) external; /// @notice claim arbitrary rewards from specific gauges /// @param _gauges address of the gauges /// @param _tokens two dimensional array for the tokens to claim function claimRewards( address[] calldata _gauges, address[][] calldata _tokens ) external; /// @notice distribute emissions to a gauge for a specific period /// @param _gauge address of the gauge /// @param _period value of the period function distributeForPeriod(address _gauge, uint256 _period) external; /// @notice attempt distribution of emissions to all gauges function distributeAll() external; /// @notice distribute emissions to gauges by index /// @param startIndex start of the loop /// @param endIndex end of the loop function batchDistributeByIndex( uint256 startIndex, uint256 endIndex ) external; /// @notice returns the votes cast for a tokenID /// @param owner address of the owner /// @return votes an array of votes casted /// @return weights an array of the weights casted per pool function getVotes( address owner, uint256 period ) external view returns (address[] memory votes, uint256[] memory weights); /// @notice returns an array of all the gauges /// @return _gauges the array of gauges function getAllGauges() external view returns (address[] memory _gauges); /// @notice returns an array of all the feeDists /// @return _feeDistributors the array of feeDists function getAllFeeDistributors() external view returns (address[] memory _feeDistributors); /// @notice sets the xShadowRatio default function setGlobalRatio(uint256 _xRatio) external; /// @notice whether the token is whitelisted in governance function isWhitelisted(address _token) external view returns (bool _tf); /// @notice function for removing malicious or stuffed tokens function removeFeeDistributorReward( address _feeDist, address _token ) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.26; interface IVoteModule { /** Custom Errors */ /// @dev == 0 error ZERO_AMOUNT(); /// @dev if address is not xShadow error NOT_XSHADOW(); /// @dev error for when the cooldown period has not been passed yet error COOLDOWN_ACTIVE(); /// @dev error for when you try to deposit or withdraw for someone who isn't the msg.sender error NOT_VOTEMODULE(); /// @dev error for when the caller is not authorized error UNAUTHORIZED(); /// @dev error for accessHub gated functions error NOT_ACCESSHUB(); /// @dev error for when there is no change of state error NO_CHANGE(); /// @dev error for when address is invalid error INVALID_ADDRESS(); /** Events */ event Deposit(address indexed from, uint256 amount); event Withdraw(address indexed from, uint256 amount); event NotifyReward(address indexed from, uint256 amount); event ClaimRewards(address indexed from, uint256 amount); event ExemptedFromCooldown(address indexed candidate, bool status); event NewDuration(uint256 oldDuration, uint256 newDuration); event NewCooldown(uint256 oldCooldown, uint256 newCooldown); event Delegate( address indexed delegator, address indexed delegatee, bool indexed isAdded ); event SetAdmin( address indexed owner, address indexed operator, bool indexed isAdded ); /** Functions */ function delegates(address) external view returns (address); /// @notice mapping for admins for a specific address /// @param owner the owner to check against /// @return operator the address that is designated as an admin/operator function admins(address owner) external view returns (address operator); function accessHub() external view returns(address); /// @notice returns the last time the reward was modified or periodFinish if the reward has ended function lastTimeRewardApplicable() external view returns (uint256 _ltra); function earned(address account) external view returns (uint256 _reward); /// @notice the time which users can deposit and withdraw function unlockTime() external view returns (uint256 _timestamp); /// @notice the accumulated dust in the contract from precision rollover function dust() external view returns (uint256 _dust); /// @notice claims pending rebase rewards function getReward() external; function rewardPerToken() external view returns (uint256 _rewardPerToken); /// @notice deposits all xShadow in the caller's wallet function depositAll() external; /// @notice deposit a specified amount of xShadow function deposit(uint256 amount) external; /// @notice withdraw all xShadow function withdrawAll() external; /// @notice withdraw a specified amount of xShadow function withdraw(uint256 amount) external; /// @notice check for admin perms /// @param operator the address to check /// @param owner the owner to check against for permissions function isAdminFor( address operator, address owner ) external view returns (bool approved); /// @notice check for delegations /// @param delegate the address to check /// @param owner the owner to check against for permissions function isDelegateFor( address delegate, address owner ) external view returns (bool approved); /// @notice rewards pending to be distributed for the reward period /// @return _left rewards remaining in the period function left() external view returns (uint256 _left); /// @notice used by the xShadow contract to notify pending rebases /// @param amount the amount of Shadow to be notified from exit penalties function notifyRewardAmount(uint256 amount) external; /// @notice the address of the xShadow token (staking/voting token) /// @return _xShadow the address function xShadow() external view returns (address _xShadow); /// @notice address of the voter contract /// @return _voter the voter contract address function voter() external view returns (address _voter); /// @notice returns the total voting power (equal to total supply in the VoteModule) /// @return _totalSupply the total voting power function totalSupply() external view returns (uint256 _totalSupply); /// @notice last time the rewards system was updated function lastUpdateTime() external view returns (uint256 _lastUpdateTime); /// @notice rewards per xShadow /// @return _rewardPerToken the amount of rewards per xShadow function rewardPerTokenStored() external view returns (uint256 _rewardPerToken); /// @notice when the 1800 seconds after notifying are up function periodFinish() external view returns (uint256 _periodFinish); /// @notice calculates the rewards per second /// @return _rewardRate the rewards distributed per second function rewardRate() external view returns (uint256 _rewardRate); /// @notice voting power /// @param user the address to check /// @return amount the staked balance function balanceOf(address user) external view returns (uint256 amount); /// @notice rewards per amount of xShadow's staked function userRewardPerTokenStored( address user ) external view returns (uint256 rewardPerToken); /// @notice the amount of rewards claimable for the user /// @param user the address of the user to check /// @return rewards the stored rewards function storedRewardsPerUser( address user ) external view returns (uint256 rewards); /// @notice delegate voting perms to another address /// @param delegatee who you delegate to /// @dev set address(0) to revoke function delegate(address delegatee) external; /// @notice give admin permissions to a another address /// @param operator the address to give administrative perms to /// @dev set address(0) to revoke function setAdmin(address operator) external; function cooldownExempt(address) external view returns (bool); function setCooldownExemption(address, bool) external; function setNewDuration(uint) external; function setNewCooldown(uint) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity ^0.8.26; interface ILauncherPlugin { error NOT_AUTHORITY(); error ALREADY_AUTHORITY(); error NOT_OPERATOR(); error ALREADY_OPERATOR(); error NOT_ENABLED(address pool); error NO_FEEDIST(); error ENABLED(); error INVALID_TAKE(); /// @dev struct that holds the configurations of each specific pool struct LauncherConfigs { uint256 launcherTake; address takeRecipient; } event NewOperator(address indexed _old, address indexed _new); event NewAuthority(address indexed _newAuthority); event RemovedAuthority(address indexed _previousAuthority); event EnabledPool(address indexed pool, string indexed _name); event DisabledPool(address indexed pool); event MigratedPool(address indexed oldPool, address indexed newPool); event Configured( address indexed pool, uint256 take, address indexed recipient ); event Labeled(address indexed authority, string indexed label); /// @notice address of the accessHub function accessHub() external view returns (address _accessHub); /// @notice protocol operator address function operator() external view returns (address _operator); /// @notice the denominator constant function DENOM() external view returns (uint256 _denominator); /// @notice whether configs are enabled for a pool /// @param _pool address of the pool /// @return bool function launcherPluginEnabled(address _pool) external view returns (bool); /// @notice maps whether an address is an authority or not /// @param _who the address to check /// @return _is true or false function authorityMap(address _who) external view returns (bool _is); /// @notice allows migrating the parameters from one pool to the other /// @param _oldPool the current address of the pair /// @param _newPool the new pool's address function migratePool(address _oldPool, address _newPool) external; /// @notice fetch the launcher configs if any /// @param _pool address of the pool /// @return LauncherConfigs the configs function poolConfigs( address _pool ) external view returns (uint256, address); /// @notice view functionality to see who is an authority function nameOfAuthority(address) external view returns (string memory); /// @notice returns the pool address for a feeDist /// @param _feeDist address of the feeDist /// @return _pool the pool address from the mapping function feeDistToPool( address _feeDist ) external view returns (address _pool); /// @notice set launcher configurations for a pool /// @param _pool address of the pool /// @param _take the fee that goes to the designated recipient /// @param _recipient the address that receives the fees function setConfigs( address _pool, uint256 _take, address _recipient ) external; /// @notice enables the pool for LauncherConfigs /// @param _pool address of the pool function enablePool(address _pool) external; /// @notice disables the pool for LauncherConfigs /// @dev clears mappings /// @param _pool address of the pool function disablePool(address _pool) external; /// @notice sets a new operator address /// @param _newOperator new operator address function setOperator(address _newOperator) external; /// @notice gives authority to a new contract/address /// @param _newAuthority the suggested new authority function grantAuthority(address _newAuthority, string calldata) external; /// @notice removes authority from a contract/address /// @param _oldAuthority the to-be-removed authority function revokeAuthority(address _oldAuthority) external; /// @notice labels an authority function label(address, string calldata) external; /// @notice returns the values for the launcherConfig of the specific feeDist /// @param _feeDist the address of the feeDist /// @return _launcherTake fee amount taken /// @return _recipient address that receives the fees function values( address _feeDist ) external view returns (uint256 _launcherTake, address _recipient); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/Panic.sol) pragma solidity ^0.8.20; /** * @dev Helper library for emitting standardized panic codes. * * ```solidity * contract Example { * using Panic for uint256; * * // Use any of the declared internal constants * function foo() { Panic.GENERIC.panic(); } * * // Alternatively * function foo() { Panic.panic(Panic.GENERIC); } * } * ``` * * Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil]. * * _Available since v5.1._ */ // slither-disable-next-line unused-state library Panic { /// @dev generic / unspecified error uint256 internal constant GENERIC = 0x00; /// @dev used by the assert() builtin uint256 internal constant ASSERT = 0x01; /// @dev arithmetic underflow or overflow uint256 internal constant UNDER_OVERFLOW = 0x11; /// @dev division or modulo by zero uint256 internal constant DIVISION_BY_ZERO = 0x12; /// @dev enum conversion error uint256 internal constant ENUM_CONVERSION_ERROR = 0x21; /// @dev invalid encoding in storage uint256 internal constant STORAGE_ENCODING_ERROR = 0x22; /// @dev empty array pop uint256 internal constant EMPTY_ARRAY_POP = 0x31; /// @dev array out of bounds access uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32; /// @dev resource error (too large allocation or too large array) uint256 internal constant RESOURCE_ERROR = 0x41; /// @dev calling invalid internal function uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51; /// @dev Reverts with a panic code. Recommended to use with /// the internal constants with predefined codes. function panic(uint256 code) internal pure { assembly ("memory-safe") { mstore(0x00, 0x4e487b71) mstore(0x20, code) revert(0x1c, 0x24) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SafeCast.sol) // This file was procedurally generated from scripts/generate/templates/SafeCast.js. pragma solidity ^0.8.20; /** * @dev Wrappers over Solidity's uintXX/intXX/bool casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeCast { /** * @dev Value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value); /** * @dev An int value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedIntToUint(int256 value); /** * @dev Value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedIntDowncast(uint8 bits, int256 value); /** * @dev An uint value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedUintToInt(uint256 value); /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits */ function toUint248(uint256 value) internal pure returns (uint248) { if (value > type(uint248).max) { revert SafeCastOverflowedUintDowncast(248, value); } return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits */ function toUint240(uint256 value) internal pure returns (uint240) { if (value > type(uint240).max) { revert SafeCastOverflowedUintDowncast(240, value); } return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits */ function toUint232(uint256 value) internal pure returns (uint232) { if (value > type(uint232).max) { revert SafeCastOverflowedUintDowncast(232, value); } return uint232(value); } /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits */ function toUint224(uint256 value) internal pure returns (uint224) { if (value > type(uint224).max) { revert SafeCastOverflowedUintDowncast(224, value); } return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits */ function toUint216(uint256 value) internal pure returns (uint216) { if (value > type(uint216).max) { revert SafeCastOverflowedUintDowncast(216, value); } return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits */ function toUint208(uint256 value) internal pure returns (uint208) { if (value > type(uint208).max) { revert SafeCastOverflowedUintDowncast(208, value); } return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits */ function toUint200(uint256 value) internal pure returns (uint200) { if (value > type(uint200).max) { revert SafeCastOverflowedUintDowncast(200, value); } return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits */ function toUint192(uint256 value) internal pure returns (uint192) { if (value > type(uint192).max) { revert SafeCastOverflowedUintDowncast(192, value); } return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits */ function toUint184(uint256 value) internal pure returns (uint184) { if (value > type(uint184).max) { revert SafeCastOverflowedUintDowncast(184, value); } return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits */ function toUint176(uint256 value) internal pure returns (uint176) { if (value > type(uint176).max) { revert SafeCastOverflowedUintDowncast(176, value); } return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits */ function toUint168(uint256 value) internal pure returns (uint168) { if (value > type(uint168).max) { revert SafeCastOverflowedUintDowncast(168, value); } return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits */ function toUint160(uint256 value) internal pure returns (uint160) { if (value > type(uint160).max) { revert SafeCastOverflowedUintDowncast(160, value); } return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits */ function toUint152(uint256 value) internal pure returns (uint152) { if (value > type(uint152).max) { revert SafeCastOverflowedUintDowncast(152, value); } return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits */ function toUint144(uint256 value) internal pure returns (uint144) { if (value > type(uint144).max) { revert SafeCastOverflowedUintDowncast(144, value); } return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits */ function toUint136(uint256 value) internal pure returns (uint136) { if (value > type(uint136).max) { revert SafeCastOverflowedUintDowncast(136, value); } return uint136(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits */ function toUint128(uint256 value) internal pure returns (uint128) { if (value > type(uint128).max) { revert SafeCastOverflowedUintDowncast(128, value); } return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits */ function toUint120(uint256 value) internal pure returns (uint120) { if (value > type(uint120).max) { revert SafeCastOverflowedUintDowncast(120, value); } return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits */ function toUint112(uint256 value) internal pure returns (uint112) { if (value > type(uint112).max) { revert SafeCastOverflowedUintDowncast(112, value); } return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits */ function toUint104(uint256 value) internal pure returns (uint104) { if (value > type(uint104).max) { revert SafeCastOverflowedUintDowncast(104, value); } return uint104(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits */ function toUint96(uint256 value) internal pure returns (uint96) { if (value > type(uint96).max) { revert SafeCastOverflowedUintDowncast(96, value); } return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits */ function toUint88(uint256 value) internal pure returns (uint88) { if (value > type(uint88).max) { revert SafeCastOverflowedUintDowncast(88, value); } return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits */ function toUint80(uint256 value) internal pure returns (uint80) { if (value > type(uint80).max) { revert SafeCastOverflowedUintDowncast(80, value); } return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits */ function toUint72(uint256 value) internal pure returns (uint72) { if (value > type(uint72).max) { revert SafeCastOverflowedUintDowncast(72, value); } return uint72(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits */ function toUint64(uint256 value) internal pure returns (uint64) { if (value > type(uint64).max) { revert SafeCastOverflowedUintDowncast(64, value); } return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits */ function toUint56(uint256 value) internal pure returns (uint56) { if (value > type(uint56).max) { revert SafeCastOverflowedUintDowncast(56, value); } return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits */ function toUint48(uint256 value) internal pure returns (uint48) { if (value > type(uint48).max) { revert SafeCastOverflowedUintDowncast(48, value); } return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits */ function toUint40(uint256 value) internal pure returns (uint40) { if (value > type(uint40).max) { revert SafeCastOverflowedUintDowncast(40, value); } return uint40(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits */ function toUint32(uint256 value) internal pure returns (uint32) { if (value > type(uint32).max) { revert SafeCastOverflowedUintDowncast(32, value); } return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits */ function toUint24(uint256 value) internal pure returns (uint24) { if (value > type(uint24).max) { revert SafeCastOverflowedUintDowncast(24, value); } return uint24(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits */ function toUint16(uint256 value) internal pure returns (uint16) { if (value > type(uint16).max) { revert SafeCastOverflowedUintDowncast(16, value); } return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits */ function toUint8(uint256 value) internal pure returns (uint8) { if (value > type(uint8).max) { revert SafeCastOverflowedUintDowncast(8, value); } return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. */ function toUint256(int256 value) internal pure returns (uint256) { if (value < 0) { revert SafeCastOverflowedIntToUint(value); } return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits */ function toInt248(int256 value) internal pure returns (int248 downcasted) { downcasted = int248(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(248, value); } } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits */ function toInt240(int256 value) internal pure returns (int240 downcasted) { downcasted = int240(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(240, value); } } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits */ function toInt232(int256 value) internal pure returns (int232 downcasted) { downcasted = int232(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(232, value); } } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits */ function toInt224(int256 value) internal pure returns (int224 downcasted) { downcasted = int224(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(224, value); } } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits */ function toInt216(int256 value) internal pure returns (int216 downcasted) { downcasted = int216(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(216, value); } } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits */ function toInt208(int256 value) internal pure returns (int208 downcasted) { downcasted = int208(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(208, value); } } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits */ function toInt200(int256 value) internal pure returns (int200 downcasted) { downcasted = int200(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(200, value); } } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits */ function toInt192(int256 value) internal pure returns (int192 downcasted) { downcasted = int192(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(192, value); } } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits */ function toInt184(int256 value) internal pure returns (int184 downcasted) { downcasted = int184(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(184, value); } } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits */ function toInt176(int256 value) internal pure returns (int176 downcasted) { downcasted = int176(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(176, value); } } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits */ function toInt168(int256 value) internal pure returns (int168 downcasted) { downcasted = int168(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(168, value); } } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits */ function toInt160(int256 value) internal pure returns (int160 downcasted) { downcasted = int160(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(160, value); } } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits */ function toInt152(int256 value) internal pure returns (int152 downcasted) { downcasted = int152(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(152, value); } } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits */ function toInt144(int256 value) internal pure returns (int144 downcasted) { downcasted = int144(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(144, value); } } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits */ function toInt136(int256 value) internal pure returns (int136 downcasted) { downcasted = int136(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(136, value); } } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits */ function toInt128(int256 value) internal pure returns (int128 downcasted) { downcasted = int128(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(128, value); } } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits */ function toInt120(int256 value) internal pure returns (int120 downcasted) { downcasted = int120(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(120, value); } } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits */ function toInt112(int256 value) internal pure returns (int112 downcasted) { downcasted = int112(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(112, value); } } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits */ function toInt104(int256 value) internal pure returns (int104 downcasted) { downcasted = int104(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(104, value); } } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits */ function toInt96(int256 value) internal pure returns (int96 downcasted) { downcasted = int96(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(96, value); } } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits */ function toInt88(int256 value) internal pure returns (int88 downcasted) { downcasted = int88(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(88, value); } } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits */ function toInt80(int256 value) internal pure returns (int80 downcasted) { downcasted = int80(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(80, value); } } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits */ function toInt72(int256 value) internal pure returns (int72 downcasted) { downcasted = int72(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(72, value); } } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits */ function toInt64(int256 value) internal pure returns (int64 downcasted) { downcasted = int64(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(64, value); } } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits */ function toInt56(int256 value) internal pure returns (int56 downcasted) { downcasted = int56(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(56, value); } } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits */ function toInt48(int256 value) internal pure returns (int48 downcasted) { downcasted = int48(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(48, value); } } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits */ function toInt40(int256 value) internal pure returns (int40 downcasted) { downcasted = int40(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(40, value); } } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits */ function toInt32(int256 value) internal pure returns (int32 downcasted) { downcasted = int32(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(32, value); } } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits */ function toInt24(int256 value) internal pure returns (int24 downcasted) { downcasted = int24(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(24, value); } } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits */ function toInt16(int256 value) internal pure returns (int16 downcasted) { downcasted = int16(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(16, value); } } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits */ function toInt8(int256 value) internal pure returns (int8 downcasted) { downcasted = int8(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(8, value); } } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive if (value > uint256(type(int256).max)) { revert SafeCastOverflowedUintToInt(value); } return int256(value); } /** * @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump. */ function toUint(bool b) internal pure returns (uint256 u) { assembly ("memory-safe") { u := iszero(iszero(b)) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC-20 standard as defined in the ERC. */ 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 value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` 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 value) external returns (bool); }
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Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"createFeeDistributor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lastFeeDistributor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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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.