Blockchain / Global / Address

Contract

0x9fb0a9689cf9de4Ae787665C7e0e0f8fffc1830e

Balance
0 SOMI
Transactions sent
1
Type
Contract · 16,468 bytes of code

TokenPresale Verified

Compiler
solc 0.8.20+commit.a1b79de6
Language
Solidity
Optimization
Yes, 10 runs
EVM version
paris
License
—
Verified
2026-10-12

contracts/presale/TokenPresale.sol

and 19 more files

Solidity
// SPDX-License-Identifier: BUSL-1.1

pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "./TokenBase.sol";
import "./KeysLibrary.sol";

contract TokenPresale is Ownable, ReentrancyGuard {
    uint256 public constant DECIMALS_SELL = 18;
    uint256 public constant DECIMALS_BUY = 18; // native decimals 18
    uint256 public constant HARD_CAP = 2500_1000 * 10 ** DECIMALS_BUY; // 2.5M SOMI
    uint256 public constant SOFT_CAP = 200_1000 * 10 ** DECIMALS_BUY;  // 200K SOMI
    uint256 public constant SELL_TOKEN_TOTAL = 100_000_000 * 10 ** DECIMALS_SELL; // 100M tokenSell
    uint256 public constant INITIAL_PRICE = 25 * 10 ** (DECIMALS_BUY - 3); // initial tokenSell price in SOMI
    uint256 public constant PRICE_RATE = 500;  // 5% rate of price growth
    uint256 public constant OVER_HARD_BONUS_RATE = 0;  // 0% Percentage of incentives over hardtop
    uint256 public constant BASIS_DIVISOR = 10000;
    uint256 public constant MIN_PURCHASE = 50 * 10 ** DECIMALS_BUY;       // 50 SOMI
    uint256 public constant MAX_PURCHASE = 100_000 * 10 ** DECIMALS_BUY;  // 100K SOMI

    // NFT score factors (scaled by 100 for precision)
    uint256 public constant NFT_SILVER_FACTOR = 120; // 1.2 * 100
    uint256 public constant NFT_GOLD_FACTOR = 250;   // 2.5 * 100
    uint256 public constant NFT_PLATINUM_FACTOR = 400; // 4 * 100
    uint256 public constant NFT_MAX_SCORE = 10000;
    uint256 public constant NFT_REWARD_DIVISOR = 100000;

    TokenBase public tokenBase;

    // NFT contract addresses (queried for balances)
    IERC721 public silverNFT;
    IERC721 public goldNFT;
    IERC721 public platinumNFT;

    struct Stage {
        uint256 start;
        uint256 end;
        uint256 price; // tokenSell price in native coin (scaled by 1e18)
        uint256 bonusPercentage; // bonus as percentage (scaled by 1e2)
    }

    Stage[4] public stages;

    bool public finalized; // Note: This is still local, but could be migrated if needed
    bool public initialized; // Track if initial values set to TokenBase

    event TokensPurchased(address indexed buyer, uint256 amountTokenSell, uint256 earlyBirdBonusTokenSell, uint256 nftBonusTokenSell, uint256 amountMainCoin);
    event PresaleFinalized(bool success);
    event TokensClaimed(address indexed claimer, uint256 amount);
    event RefundClaimed(address indexed claimer, uint256 amount);
    event StartTimeUpdated(uint256 newStartTime);
    event EndTimeUpdated(uint256 newEndTime);
    event FundToUpdated(address newFundTo);
    event NftContractsUpdated(address silver, address gold, address platinum);
    event PresaleInitialized(uint256 startTime, uint256 endTime, address fundTo, address silverNFT, address goldNFT, address platinumNFT);
    event FundsTransferred(address indexed fundTo, uint256 amount); // New: Record fund transfers

    constructor(
        uint256 _startTime,
        uint256 _endTime,
        address _fundTo,
        address _tokenBase,
        address _silverNFT,
        address _goldNFT,
        address _platinumNFT
    ) Ownable(msg.sender) {
        require(_startTime < _endTime && block.timestamp < _endTime, "Invalid time range");
        require(_tokenBase != address(0), "Invalid TokenBase address");
        require(_silverNFT != address(0) && _goldNFT != address(0) && _platinumNFT != address(0), "Invalid NFT addresses");
        require(_fundTo != address(0), "Invalid fundTo address");

        tokenBase = TokenBase(_tokenBase);
        silverNFT = IERC721(_silverNFT);
        goldNFT = IERC721(_goldNFT);
        platinumNFT = IERC721(_platinumNFT);

        // Local initialization only (no TokenBase writes to avoid role revert during deployment)
        stages[0] = Stage(0, HARD_CAP * 1000 / BASIS_DIVISOR, INITIAL_PRICE, 500); // 5% bonus
        stages[1] = Stage(HARD_CAP * 1000 / BASIS_DIVISOR, HARD_CAP * 3000 / BASIS_DIVISOR, stages[0].price * (BASIS_DIVISOR + PRICE_RATE) / BASIS_DIVISOR, 250); // 2.5% bonus
        stages[2] = Stage(HARD_CAP * 3000 / BASIS_DIVISOR, HARD_CAP * 5000 / BASIS_DIVISOR, stages[1].price * (BASIS_DIVISOR + PRICE_RATE) / BASIS_DIVISOR, 120); // 1.2% bonus
        stages[3] = Stage(HARD_CAP * 5000 / BASIS_DIVISOR, HARD_CAP * 1000, stages[2].price * (BASIS_DIVISOR + PRICE_RATE) / BASIS_DIVISOR, 0); // 0% bonus

        emit NftContractsUpdated(_silverNFT, _goldNFT, _platinumNFT);
    }

    function initializePresale(
        uint256 _startTime,
        uint256 _endTime,
        address _fundTo,
        address _silverNFT,
        address _goldNFT,
        address _platinumNFT
    ) external onlyOwner {
        require(!initialized, "Already initialized");
        require(_startTime < _endTime && block.timestamp < _endTime, "Invalid time range");
        require(_fundTo != address(0), "Invalid fundTo address");
        require(_silverNFT != address(0) && _goldNFT != address(0) && _platinumNFT != address(0), "Invalid NFT addresses");

        tokenBase.setUint(KeysLibrary.KEY_START_TIME, _startTime);
        tokenBase.setUint(KeysLibrary.KEY_END_TIME, _endTime);
        tokenBase.setAddress(KeysLibrary.KEY_FUND_TO, _fundTo);
        tokenBase.setAddress(KeysLibrary.KEY_SILVER_NFT, _silverNFT);
        tokenBase.setAddress(KeysLibrary.KEY_GOLD_NFT, _goldNFT);
        tokenBase.setAddress(KeysLibrary.KEY_PLATINUM_NFT, _platinumNFT);
        tokenBase.setBool(KeysLibrary.KEY_FINALIZED, false);

        silverNFT = IERC721(_silverNFT);
        goldNFT = IERC721(_goldNFT);
        platinumNFT = IERC721(_platinumNFT);

        initialized = true;
        emit PresaleInitialized(_startTime, _endTime, _fundTo, _silverNFT, _goldNFT, _platinumNFT);
    }

    modifier onlyDuringPresale() {
        require(block.timestamp >= tokenBase.getUint(KeysLibrary.KEY_START_TIME) &&
        block.timestamp <= tokenBase.getUint(KeysLibrary.KEY_END_TIME), "Presale not active");
        _;
    }

    function setNftContracts(address _silverNFT, address _goldNFT, address _platinumNFT) external onlyOwner {
        require(_silverNFT != address(0) && _goldNFT != address(0) && _platinumNFT != address(0), "Invalid NFT addresses");
        silverNFT = IERC721(_silverNFT);
        goldNFT = IERC721(_goldNFT);
        platinumNFT = IERC721(_platinumNFT);
        tokenBase.setAddress(KeysLibrary.KEY_SILVER_NFT, _silverNFT);
        tokenBase.setAddress(KeysLibrary.KEY_GOLD_NFT, _goldNFT);
        tokenBase.setAddress(KeysLibrary.KEY_PLATINUM_NFT, _platinumNFT);
        emit NftContractsUpdated(_silverNFT, _goldNFT, _platinumNFT);
    }

    function setStartTime(uint256 _newStartTime) external onlyOwner {
        require(_newStartTime > block.timestamp, "New start time must be in the future");
        tokenBase.setUint(KeysLibrary.KEY_START_TIME, _newStartTime);
        emit StartTimeUpdated(_newStartTime);
    }

    function setEndTime(uint256 _newEndTime) external onlyOwner {
        require(_newEndTime > block.timestamp, "New end time must be in the future");
        require(_newEndTime > tokenBase.getUint(KeysLibrary.KEY_START_TIME), "New end time must be after start time");
        tokenBase.setUint(KeysLibrary.KEY_END_TIME, _newEndTime);
        emit EndTimeUpdated(_newEndTime);
    }

    function setFundTo(address _newFundTo) external onlyOwner {
        require(_newFundTo != address(0), "Invalid address");
        tokenBase.setAddress(KeysLibrary.KEY_FUND_TO, _newFundTo);
        emit FundToUpdated(_newFundTo);
    }

    function _calculateNftScore(address user) internal view returns (uint256 score) {
        uint256 silverCount = silverNFT.balanceOf(user);
        uint256 goldCount = goldNFT.balanceOf(user);
        uint256 platinumCount = platinumNFT.balanceOf(user);

        uint256 rawScore = (silverCount * NFT_SILVER_FACTOR) +
            (goldCount * NFT_GOLD_FACTOR) +
            (platinumCount * NFT_PLATINUM_FACTOR);

        score = (rawScore > NFT_MAX_SCORE) ? NFT_MAX_SCORE : rawScore;
    }

    function _calculateNftBonusRate(uint256 score) internal pure returns (uint256 rate) {
        rate = (score * BASIS_DIVISOR) / NFT_REWARD_DIVISOR;
    }

    function buyTokens() external payable onlyDuringPresale nonReentrant {
        uint256 amountMainCoin = msg.value;
        bytes32 contribKey = KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_CONTRIBUTIONS, msg.sender);
        uint256 currentContrib = tokenBase.getUint(contribKey);
        uint256 nextAmountMainCoin = currentContrib + amountMainCoin;
        require(amountMainCoin > 0 && nextAmountMainCoin >= MIN_PURCHASE && nextAmountMainCoin <= MAX_PURCHASE, "Invalid purchase amount");

        uint256 initialTotalRaised = tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED); // Cache initial totalRaised
        uint256 remainingAmountMainCoin = amountMainCoin;
        uint256 totalAmountTokenSell = 0;
        uint256 totalEarlyBirdBonusTokenSell = 0;
        uint256 totalNftBonusTokenSell = 0;

        uint256 nftScore = _calculateNftScore(msg.sender);
        uint256 nftBonusRate = _calculateNftBonusRate(nftScore);

        for (uint256 i = 0; i < stages.length && remainingAmountMainCoin > 0; i++) {
            Stage memory stage = stages[i];
            if (tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED) >= stage.end) continue;

            uint256 stageRemainingBuyCapacity = stage.end - tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED);
            uint256 stageBuyAmount = remainingAmountMainCoin > stageRemainingBuyCapacity
                ? stageRemainingBuyCapacity
                : remainingAmountMainCoin;

            uint256 stageSellAmount = (stageBuyAmount * 10 ** DECIMALS_SELL) / stage.price;
            uint256 stageEarlyBirdBonusAmount = (stageSellAmount * stage.bonusPercentage) / BASIS_DIVISOR;
            uint256 stageNftBonusAmount = (stageSellAmount * nftBonusRate) / BASIS_DIVISOR;

            totalAmountTokenSell += stageSellAmount;
            totalEarlyBirdBonusTokenSell += stageEarlyBirdBonusAmount;
            totalNftBonusTokenSell += stageNftBonusAmount;
            remainingAmountMainCoin -= stageBuyAmount;

            tokenBase.incrementUint(KeysLibrary.KEY_TOTAL_RAISED, stageBuyAmount);
            tokenBase.incrementUint(KeysLibrary.KEY_TOTAL_SOLD, stageSellAmount);
            tokenBase.incrementUint(KeysLibrary.KEY_TOTAL_BONUS, stageEarlyBirdBonusAmount + stageNftBonusAmount);
            tokenBase.incrementUint(KeysLibrary.KEY_TOTAL_EARLY_BIRD_BONUS, stageEarlyBirdBonusAmount);
            tokenBase.incrementUint(KeysLibrary.KEY_TOTAL_NFT_BONUS, stageNftBonusAmount);

            if (tokenBase.getUint(KeysLibrary.KEY_TOTAL_SOLD) + tokenBase.getUint(KeysLibrary.KEY_TOTAL_BONUS) > SELL_TOKEN_TOTAL) {
                revert("Exceeds available tokens");
            }
            if (tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED) >= HARD_CAP) {
                if ((tokenBase.getUint(KeysLibrary.KEY_TOTAL_SOLD) + tokenBase.getUint(KeysLibrary.KEY_TOTAL_BONUS) +
                    tokenBase.getUint(KeysLibrary.KEY_TOTAL_SOLD) * OVER_HARD_BONUS_RATE / BASIS_DIVISOR) > SELL_TOKEN_TOTAL) {
                    revert("Exceeds available tokens2");
                }
            }
        }

        require(remainingAmountMainCoin == 0, "Insufficient capacity for purchase");

        tokenBase.setUint(contribKey, currentContrib + amountMainCoin);

        bytes32 purchKey = KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_PURCHASED_TOKENS, msg.sender);
        uint256 currentPurch = tokenBase.getUint(purchKey);
        tokenBase.setUint(purchKey, currentPurch + totalAmountTokenSell);

        bytes32 earlyBirdKey = KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_EARLY_BIRD_BONUS, msg.sender);
        bytes32 nftBonusKey = KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_NFT_BONUS, msg.sender);
        uint256 currentEarlyBird = tokenBase.getUint(earlyBirdKey);
        uint256 currentNft = tokenBase.getUint(nftBonusKey);
        tokenBase.setUint(earlyBirdKey, currentEarlyBird + totalEarlyBirdBonusTokenSell);
        tokenBase.setUint(nftBonusKey, currentNft + totalNftBonusTokenSell);

        bytes32 hasPurchKey = KeysLibrary.getUserBoolKey(KeysLibrary.USER_SUFFIX_HAS_PURCHASED, msg.sender);
        bool hasAlreadyPurchased = tokenBase.getBool(hasPurchKey);
        if (!hasAlreadyPurchased) {
            tokenBase.setBool(hasPurchKey, true);
            tokenBase.incrementUint(KeysLibrary.KEY_USER_COUNT, 1);
        }

        // Handle fund transfer based on soft cap
        uint256 updatedTotalRaised = tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED);
        if (initialTotalRaised < SOFT_CAP && updatedTotalRaised >= SOFT_CAP) {
            // First time reaching soft cap: transfer all contract balance
            _sendFundTo();
        } else if (initialTotalRaised >= SOFT_CAP) {
            // Already reached soft cap: transfer current msg.value
            _sendAmountTo(amountMainCoin);
        }

        emit TokensPurchased(msg.sender, totalAmountTokenSell, totalEarlyBirdBonusTokenSell, totalNftBonusTokenSell, amountMainCoin);
    }

    function finalizePresale() external onlyOwner nonReentrant {
        require(block.timestamp > tokenBase.getUint(KeysLibrary.KEY_END_TIME), "Presale not ended");
        require(!tokenBase.getBool(KeysLibrary.KEY_FINALIZED), "Already finalized");

        tokenBase.setBool(KeysLibrary.KEY_FINALIZED, true);
        bool success = tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED) >= SOFT_CAP;
        if (success) {
            _sendFundTo(); // Attempt to send any remaining balance
        }
        emit PresaleFinalized(success);
    }

    function claimRefund() external nonReentrant {
        require(tokenBase.getBool(KeysLibrary.KEY_FINALIZED), "Presale not finalized");
        require(tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED) < SOFT_CAP, "Presale succeeded");

        bytes32 contribKey = KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_CONTRIBUTIONS, msg.sender);
        bytes32 refundKey = KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_REFUNDS, msg.sender);

        uint256 contrib = tokenBase.getUint(contribKey);
        uint256 ref = tokenBase.getUint(refundKey);
        uint256 amount = contrib - ref;
        require(amount > 0, "Already refunded");

        tokenBase.setUint(refundKey, ref + amount);
        (bool success, ) = msg.sender.call{value: amount}("");
        require(success, "Failed to send native coin");

        emit RefundClaimed(msg.sender, amount);
    }

    function withdrawFunds() external onlyOwner nonReentrant {
        require(tokenBase.getBool(KeysLibrary.KEY_FINALIZED), "Presale not finalized");
        require(tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED) >= SOFT_CAP, "Presale failed");
        require(tokenBase.getAddress(KeysLibrary.KEY_FUND_TO) != address(0), "Invalid asset receiving address");
        _sendFundTo(); // Attempt to send any remaining balance
    }

    function _sendFundTo() internal {
        uint256 balance = address(this).balance;
        if (balance > 0) { // Allow zero balance to avoid revert in finalize/withdraw
            address fundToAddr = tokenBase.getAddress(KeysLibrary.KEY_FUND_TO);
            (bool success, ) = fundToAddr.call{value: balance}("");
            require(success, "Failed to send funds");
            emit FundsTransferred(fundToAddr, balance);
        }
    }

    function _sendAmountTo(uint256 amount) internal {
        require(amount > 0, "Amount must be greater than zero");
        address fundToAddr = tokenBase.getAddress(KeysLibrary.KEY_FUND_TO);
        (bool success, ) = fundToAddr.call{value: amount}("");
        require(success, "Failed to send funds");
        emit FundsTransferred(fundToAddr, amount);
    }

    function tokens() external view returns (address[] memory) {
        address[] memory addresses = new address[](1);
        addresses[0] = tokenBase.getAddress(KeysLibrary.KEY_SELL_ADDRESS);
        return addresses;
    }

    function basicInfo() external view returns (uint256[] memory) {
        uint256[] memory info = new uint256[](10);
        info[0] = tokenBase.getUint(KeysLibrary.KEY_START_TIME);
        info[1] = tokenBase.getUint(KeysLibrary.KEY_END_TIME);
        info[2] = SOFT_CAP;
        info[3] = HARD_CAP;
        info[4] = SELL_TOKEN_TOTAL;
        info[5] = INITIAL_PRICE;
        info[6] = DECIMALS_SELL;
        info[7] = DECIMALS_BUY;
        info[8] = MIN_PURCHASE;
        info[9] = MAX_PURCHASE;
        return info;
    }

    function status() external view returns (uint256[] memory) {
        uint256[] memory info = new uint256[](8);
        info[0] = tokenBase.getBool(KeysLibrary.KEY_FINALIZED) ? 1 : 0;
        info[1] = tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED) >= SOFT_CAP ? 1 : 0;
        info[2] = tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED);
        info[3] = tokenBase.getUint(KeysLibrary.KEY_TOTAL_SOLD);
        info[4] = tokenBase.getUint(KeysLibrary.KEY_TOTAL_BONUS);
        info[5] = tokenBase.getUint(KeysLibrary.KEY_USER_COUNT);
        info[6] = tokenBase.getUint(KeysLibrary.KEY_TOTAL_EARLY_BIRD_BONUS);
        info[7] = tokenBase.getUint(KeysLibrary.KEY_TOTAL_NFT_BONUS);
        return info;
    }

    function accountInfo(address _account) external view returns (uint256[] memory) {
        return _accountInfo(_account);
    }

    function userInfo() external view returns (uint256[] memory) {
        return _accountInfo(msg.sender);
    }

    function _accountInfo(address _account) internal view returns (uint256[] memory) {
        uint256[] memory info = new uint256[](7);
        info[0] = tokenBase.getUint(KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_CONTRIBUTIONS, _account));
        info[1] = tokenBase.getUint(KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_PURCHASED_TOKENS, _account));
        info[2] = tokenBase.getUint(KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_EARLY_BIRD_BONUS, _account));
        info[3] = tokenBase.getUint(KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_NFT_BONUS, _account));
        info[4] = tokenBase.getUint(KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_CLAIMED_TOKENS, _account));
        info[5] = tokenBase.getUint(KeysLibrary.getUserUintKey(KeysLibrary.USER_SUFFIX_REFUNDS, _account));
        info[6] = _calculateNftScore(_account);
        return info;
    }

    function getStage() public view returns (uint256) {
        uint256 totalRaised = tokenBase.getUint(KeysLibrary.KEY_TOTAL_RAISED);
        for (uint256 i = 0; i < stages.length; i++) {
            if (totalRaised >= stages[i].start && totalRaised < stages[i].end) {
                return i;
            }
        }
        return stages.length;
    }

    function stageInfo() external view returns (uint256, uint256) {
        uint256 stageIndex = getStage();
        if (stageIndex >= stages.length) {
            return (stages[stages.length - 1].price, stages[stages.length - 1].bonusPercentage);
        }
        return (stages[stageIndex].price, stages[stageIndex].bonusPercentage);
    }

    function getUserNftScore(address user) external view returns (uint256 score, uint256 bonusRate) {
        score = _calculateNftScore(user);
        bonusRate = _calculateNftBonusRate(score);
    }

    receive() external payable {
        revert("Use buyTokens function to send native coin");
    }
}

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         * 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);
    }
    
  • @openzeppelin/contracts/token/ERC721/IERC721.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721.sol)
    
    pragma solidity ^0.8.20;
    
    import {IERC165} from "../../utils/introspection/IERC165.sol";
    
    /**
     * @dev Required interface of an ERC-721 compliant contract.
     */
    interface IERC721 is IERC165 {
        /**
         * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
         */
        event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
    
        /**
         * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
         */
        event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
    
        /**
         * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
         */
        event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
    
        /**
         * @dev Returns the number of tokens in ``owner``'s account.
         */
        function balanceOf(address owner) external view returns (uint256 balance);
    
        /**
         * @dev Returns the owner of the `tokenId` token.
         *
         * Requirements:
         *
         * - `tokenId` must exist.
         */
        function ownerOf(uint256 tokenId) external view returns (address owner);
    
        /**
         * @dev Safely transfers `tokenId` token from `from` to `to`.
         *
         * Requirements:
         *
         * - `from` cannot be the zero address.
         * - `to` cannot be the zero address.
         * - `tokenId` token must exist and be owned by `from`.
         * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
         * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
         *   a safe transfer.
         *
         * Emits a {Transfer} event.
         */
        function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
    
        /**
         * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
         * are aware of the ERC-721 protocol to prevent tokens from being forever locked.
         *
         * Requirements:
         *
         * - `from` cannot be the zero address.
         * - `to` cannot be the zero address.
         * - `tokenId` token must exist and be owned by `from`.
         * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or
         *   {setApprovalForAll}.
         * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
         *   a safe transfer.
         *
         * Emits a {Transfer} event.
         */
        function safeTransferFrom(address from, address to, uint256 tokenId) external;
    
        /**
         * @dev Transfers `tokenId` token from `from` to `to`.
         *
         * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC-721
         * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
         * understand this adds an external call which potentially creates a reentrancy vulnerability.
         *
         * Requirements:
         *
         * - `from` cannot be the zero address.
         * - `to` cannot be the zero address.
         * - `tokenId` token must be owned by `from`.
         * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
         *
         * Emits a {Transfer} event.
         */
        function transferFrom(address from, address to, uint256 tokenId) external;
    
        /**
         * @dev Gives permission to `to` to transfer `tokenId` token to another account.
         * The approval is cleared when the token is transferred.
         *
         * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
         *
         * Requirements:
         *
         * - The caller must own the token or be an approved operator.
         * - `tokenId` must exist.
         *
         * Emits an {Approval} event.
         */
        function approve(address to, uint256 tokenId) external;
    
        /**
         * @dev Approve or remove `operator` as an operator for the caller.
         * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
         *
         * Requirements:
         *
         * - The `operator` cannot be the address zero.
         *
         * Emits an {ApprovalForAll} event.
         */
        function setApprovalForAll(address operator, bool approved) external;
    
        /**
         * @dev Returns the account approved for `tokenId` token.
         *
         * Requirements:
         *
         * - `tokenId` must exist.
         */
        function getApproved(uint256 tokenId) external view returns (address operator);
    
        /**
         * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
         *
         * See {setApprovalForAll}
         */
        function isApprovedForAll(address owner, address operator) external view returns (bool);
    }
    
  • @openzeppelin/contracts/utils/Arrays.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.3.0) (utils/Arrays.sol)
    // This file was procedurally generated from scripts/generate/templates/Arrays.js.
    
    pragma solidity ^0.8.20;
    
    import {Comparators} from "./Comparators.sol";
    import {SlotDerivation} from "./SlotDerivation.sol";
    import {StorageSlot} from "./StorageSlot.sol";
    import {Math} from "./math/Math.sol";
    
    /**
     * @dev Collection of functions related to array types.
     */
    library Arrays {
        using SlotDerivation for bytes32;
        using StorageSlot for bytes32;
    
        /**
         * @dev Sort an array of uint256 (in memory) following the provided comparator function.
         *
         * This function does the sorting "in place", meaning that it overrides the input. The object is returned for
         * convenience, but that returned value can be discarded safely if the caller has a memory pointer to the array.
         *
         * NOTE: this function's cost is `O(n · log(n))` in average and `O(n²)` in the worst case, with n the length of the
         * array. Using it in view functions that are executed through `eth_call` is safe, but one should be very careful
         * when executing this as part of a transaction. If the array being sorted is too large, the sort operation may
         * consume more gas than is available in a block, leading to potential DoS.
         *
         * IMPORTANT: Consider memory side-effects when using custom comparator functions that access memory in an unsafe way.
         */
        function sort(
            uint256[] memory array,
            function(uint256, uint256) pure returns (bool) comp
        ) internal pure returns (uint256[] memory) {
            _quickSort(_begin(array), _end(array), comp);
            return array;
        }
    
        /**
         * @dev Variant of {sort} that sorts an array of uint256 in increasing order.
         */
        function sort(uint256[] memory array) internal pure returns (uint256[] memory) {
            sort(array, Comparators.lt);
            return array;
        }
    
        /**
         * @dev Sort an array of address (in memory) following the provided comparator function.
         *
         * This function does the sorting "in place", meaning that it overrides the input. The object is returned for
         * convenience, but that returned value can be discarded safely if the caller has a memory pointer to the array.
         *
         * NOTE: this function's cost is `O(n · log(n))` in average and `O(n²)` in the worst case, with n the length of the
         * array. Using it in view functions that are executed through `eth_call` is safe, but one should be very careful
         * when executing this as part of a transaction. If the array being sorted is too large, the sort operation may
         * consume more gas than is available in a block, leading to potential DoS.
         *
         * IMPORTANT: Consider memory side-effects when using custom comparator functions that access memory in an unsafe way.
         */
        function sort(
            address[] memory array,
            function(address, address) pure returns (bool) comp
        ) internal pure returns (address[] memory) {
            sort(_castToUint256Array(array), _castToUint256Comp(comp));
            return array;
        }
    
        /**
         * @dev Variant of {sort} that sorts an array of address in increasing order.
         */
        function sort(address[] memory array) internal pure returns (address[] memory) {
            sort(_castToUint256Array(array), Comparators.lt);
            return array;
        }
    
        /**
         * @dev Sort an array of bytes32 (in memory) following the provided comparator function.
         *
         * This function does the sorting "in place", meaning that it overrides the input. The object is returned for
         * convenience, but that returned value can be discarded safely if the caller has a memory pointer to the array.
         *
         * NOTE: this function's cost is `O(n · log(n))` in average and `O(n²)` in the worst case, with n the length of the
         * array. Using it in view functions that are executed through `eth_call` is safe, but one should be very careful
         * when executing this as part of a transaction. If the array being sorted is too large, the sort operation may
         * consume more gas than is available in a block, leading to potential DoS.
         *
         * IMPORTANT: Consider memory side-effects when using custom comparator functions that access memory in an unsafe way.
         */
        function sort(
            bytes32[] memory array,
            function(bytes32, bytes32) pure returns (bool) comp
        ) internal pure returns (bytes32[] memory) {
            sort(_castToUint256Array(array), _castToUint256Comp(comp));
            return array;
        }
    
        /**
         * @dev Variant of {sort} that sorts an array of bytes32 in increasing order.
         */
        function sort(bytes32[] memory array) internal pure returns (bytes32[] memory) {
            sort(_castToUint256Array(array), Comparators.lt);
            return array;
        }
    
        /**
         * @dev Performs a quick sort of a segment of memory. The segment sorted starts at `begin` (inclusive), and stops
         * at end (exclusive). Sorting follows the `comp` comparator.
         *
         * Invariant: `begin <= end`. This is the case when initially called by {sort} and is preserved in subcalls.
         *
         * IMPORTANT: Memory locations between `begin` and `end` are not validated/zeroed. This function should
         * be used only if the limits are within a memory array.
         */
        function _quickSort(uint256 begin, uint256 end, function(uint256, uint256) pure returns (bool) comp) private pure {
            unchecked {
                if (end - begin < 0x40) return;
    
                // Use first element as pivot
                uint256 pivot = _mload(begin);
                // Position where the pivot should be at the end of the loop
                uint256 pos = begin;
    
                for (uint256 it = begin + 0x20; it < end; it += 0x20) {
                    if (comp(_mload(it), pivot)) {
                        // If the value stored at the iterator's position comes before the pivot, we increment the
                        // position of the pivot and move the value there.
                        pos += 0x20;
                        _swap(pos, it);
                    }
                }
    
                _swap(begin, pos); // Swap pivot into place
                _quickSort(begin, pos, comp); // Sort the left side of the pivot
                _quickSort(pos + 0x20, end, comp); // Sort the right side of the pivot
            }
        }
    
        /**
         * @dev Pointer to the memory location of the first element of `array`.
         */
        function _begin(uint256[] memory array) private pure returns (uint256 ptr) {
            assembly ("memory-safe") {
                ptr := add(array, 0x20)
            }
        }
    
        /**
         * @dev Pointer to the memory location of the first memory word (32bytes) after `array`. This is the memory word
         * that comes just after the last element of the array.
         */
        function _end(uint256[] memory array) private pure returns (uint256 ptr) {
            unchecked {
                return _begin(array) + array.length * 0x20;
            }
        }
    
        /**
         * @dev Load memory word (as a uint256) at location `ptr`.
         */
        function _mload(uint256 ptr) private pure returns (uint256 value) {
            assembly {
                value := mload(ptr)
            }
        }
    
        /**
         * @dev Swaps the elements memory location `ptr1` and `ptr2`.
         */
        function _swap(uint256 ptr1, uint256 ptr2) private pure {
            assembly {
                let value1 := mload(ptr1)
                let value2 := mload(ptr2)
                mstore(ptr1, value2)
                mstore(ptr2, value1)
            }
        }
    
        /// @dev Helper: low level cast address memory array to uint256 memory array
        function _castToUint256Array(address[] memory input) private pure returns (uint256[] memory output) {
            assembly {
                output := input
            }
        }
    
        /// @dev Helper: low level cast bytes32 memory array to uint256 memory array
        function _castToUint256Array(bytes32[] memory input) private pure returns (uint256[] memory output) {
            assembly {
                output := input
            }
        }
    
        /// @dev Helper: low level cast address comp function to uint256 comp function
        function _castToUint256Comp(
            function(address, address) pure returns (bool) input
        ) private pure returns (function(uint256, uint256) pure returns (bool) output) {
            assembly {
                output := input
            }
        }
    
        /// @dev Helper: low level cast bytes32 comp function to uint256 comp function
        function _castToUint256Comp(
            function(bytes32, bytes32) pure returns (bool) input
        ) private pure returns (function(uint256, uint256) pure returns (bool) output) {
            assembly {
                output := input
            }
        }
    
        /**
         * @dev Searches a sorted `array` and returns the first index that contains
         * a value greater or equal to `element`. If no such index exists (i.e. all
         * values in the array are strictly less than `element`), the array length is
         * returned. Time complexity O(log n).
         *
         * NOTE: The `array` is expected to be sorted in ascending order, and to
         * contain no repeated elements.
         *
         * IMPORTANT: Deprecated. This implementation behaves as {lowerBound} but lacks
         * support for repeated elements in the array. The {lowerBound} function should
         * be used instead.
         */
        function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
            uint256 low = 0;
            uint256 high = array.length;
    
            if (high == 0) {
                return 0;
            }
    
            while (low < high) {
                uint256 mid = Math.average(low, high);
    
                // Note that mid will always be strictly less than high (i.e. it will be a valid array index)
                // because Math.average rounds towards zero (it does integer division with truncation).
                if (unsafeAccess(array, mid).value > element) {
                    high = mid;
                } else {
                    low = mid + 1;
                }
            }
    
            // At this point `low` is the exclusive upper bound. We will return the inclusive upper bound.
            if (low > 0 && unsafeAccess(array, low - 1).value == element) {
                return low - 1;
            } else {
                return low;
            }
        }
    
        /**
         * @dev Searches an `array` sorted in ascending order and returns the first
         * index that contains a value greater or equal than `element`. If no such index
         * exists (i.e. all values in the array are strictly less than `element`), the array
         * length is returned. Time complexity O(log n).
         *
         * See C++'s https://en.cppreference.com/w/cpp/algorithm/lower_bound[lower_bound].
         */
        function lowerBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
            uint256 low = 0;
            uint256 high = array.length;
    
            if (high == 0) {
                return 0;
            }
    
            while (low < high) {
                uint256 mid = Math.average(low, high);
    
                // Note that mid will always be strictly less than high (i.e. it will be a valid array index)
                // because Math.average rounds towards zero (it does integer division with truncation).
                if (unsafeAccess(array, mid).value < element) {
                    // this cannot overflow because mid < high
                    unchecked {
                        low = mid + 1;
                    }
                } else {
                    high = mid;
                }
            }
    
            return low;
        }
    
        /**
         * @dev Searches an `array` sorted in ascending order and returns the first
         * index that contains a value strictly greater than `element`. If no such index
         * exists (i.e. all values in the array are strictly less than `element`), the array
         * length is returned. Time complexity O(log n).
         *
         * See C++'s https://en.cppreference.com/w/cpp/algorithm/upper_bound[upper_bound].
         */
        function upperBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
            uint256 low = 0;
            uint256 high = array.length;
    
            if (high == 0) {
                return 0;
            }
    
            while (low < high) {
                uint256 mid = Math.average(low, high);
    
                // Note that mid will always be strictly less than high (i.e. it will be a valid array index)
                // because Math.average rounds towards zero (it does integer division with truncation).
                if (unsafeAccess(array, mid).value > element) {
                    high = mid;
                } else {
                    // this cannot overflow because mid < high
                    unchecked {
                        low = mid + 1;
                    }
                }
            }
    
            return low;
        }
    
        /**
         * @dev Same as {lowerBound}, but with an array in memory.
         */
        function lowerBoundMemory(uint256[] memory array, uint256 element) internal pure returns (uint256) {
            uint256 low = 0;
            uint256 high = array.length;
    
            if (high == 0) {
                return 0;
            }
    
            while (low < high) {
                uint256 mid = Math.average(low, high);
    
                // Note that mid will always be strictly less than high (i.e. it will be a valid array index)
                // because Math.average rounds towards zero (it does integer division with truncation).
                if (unsafeMemoryAccess(array, mid) < element) {
                    // this cannot overflow because mid < high
                    unchecked {
                        low = mid + 1;
                    }
                } else {
                    high = mid;
                }
            }
    
            return low;
        }
    
        /**
         * @dev Same as {upperBound}, but with an array in memory.
         */
        function upperBoundMemory(uint256[] memory array, uint256 element) internal pure returns (uint256) {
            uint256 low = 0;
            uint256 high = array.length;
    
            if (high == 0) {
                return 0;
            }
    
            while (low < high) {
                uint256 mid = Math.average(low, high);
    
                // Note that mid will always be strictly less than high (i.e. it will be a valid array index)
                // because Math.average rounds towards zero (it does integer division with truncation).
                if (unsafeMemoryAccess(array, mid) > element) {
                    high = mid;
                } else {
                    // this cannot overflow because mid < high
                    unchecked {
                        low = mid + 1;
                    }
                }
            }
    
            return low;
        }
    
        /**
         * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check.
         *
         * WARNING: Only use if you are certain `pos` is lower than the array length.
         */
        function unsafeAccess(address[] storage arr, uint256 pos) internal pure returns (StorageSlot.AddressSlot storage) {
            bytes32 slot;
            assembly ("memory-safe") {
                slot := arr.slot
            }
            return slot.deriveArray().offset(pos).getAddressSlot();
        }
    
        /**
         * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check.
         *
         * WARNING: Only use if you are certain `pos` is lower than the array length.
         */
        function unsafeAccess(bytes32[] storage arr, uint256 pos) internal pure returns (StorageSlot.Bytes32Slot storage) {
            bytes32 slot;
            assembly ("memory-safe") {
                slot := arr.slot
            }
            return slot.deriveArray().offset(pos).getBytes32Slot();
        }
    
        /**
         * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check.
         *
         * WARNING: Only use if you are certain `pos` is lower than the array length.
         */
        function unsafeAccess(uint256[] storage arr, uint256 pos) internal pure returns (StorageSlot.Uint256Slot storage) {
            bytes32 slot;
            assembly ("memory-safe") {
                slot := arr.slot
            }
            return slot.deriveArray().offset(pos).getUint256Slot();
        }
    
        /**
         * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check.
         *
         * WARNING: Only use if you are certain `pos` is lower than the array length.
         */
        function unsafeMemoryAccess(address[] memory arr, uint256 pos) internal pure returns (address res) {
            assembly {
                res := mload(add(add(arr, 0x20), mul(pos, 0x20)))
            }
        }
    
        /**
         * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check.
         *
         * WARNING: Only use if you are certain `pos` is lower than the array length.
         */
        function unsafeMemoryAccess(bytes32[] memory arr, uint256 pos) internal pure returns (bytes32 res) {
            assembly {
                res := mload(add(add(arr, 0x20), mul(pos, 0x20)))
            }
        }
    
        /**
         * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check.
         *
         * WARNING: Only use if you are certain `pos` is lower than the array length.
         */
        function unsafeMemoryAccess(uint256[] memory arr, uint256 pos) internal pure returns (uint256 res) {
            assembly {
                res := mload(add(add(arr, 0x20), mul(pos, 0x20)))
            }
        }
    
        /**
         * @dev Helper to set the length of a dynamic array. Directly writing to `.length` is forbidden.
         *
         * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased.
         */
        function unsafeSetLength(address[] storage array, uint256 len) internal {
            assembly ("memory-safe") {
                sstore(array.slot, len)
            }
        }
    
        /**
         * @dev Helper to set the length of a dynamic array. Directly writing to `.length` is forbidden.
         *
         * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased.
         */
        function unsafeSetLength(bytes32[] storage array, uint256 len) internal {
            assembly ("memory-safe") {
                sstore(array.slot, len)
            }
        }
    
        /**
         * @dev Helper to set the length of a dynamic array. Directly writing to `.length` is forbidden.
         *
         * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased.
         */
        function unsafeSetLength(uint256[] storage array, uint256 len) internal {
            assembly ("memory-safe") {
                sstore(array.slot, len)
            }
        }
    }
    
  • @openzeppelin/contracts/utils/Comparators.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.1.0) (utils/Comparators.sol)
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev Provides a set of functions to compare values.
     *
     * _Available since v5.1._
     */
    library Comparators {
        function lt(uint256 a, uint256 b) internal pure returns (bool) {
            return a < b;
        }
    
        function gt(uint256 a, uint256 b) internal pure returns (bool) {
            return a > b;
        }
    }
    
  • @openzeppelin/contracts/utils/Context.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev Provides information about the current execution context, including the
     * sender of the transaction and its data. While these are generally available
     * via msg.sender and msg.data, they should not be accessed in such a direct
     * manner, since when dealing with meta-transactions the account sending and
     * paying for execution may not be the actual sender (as far as an application
     * is concerned).
     *
     * This contract is only required for intermediate, library-like contracts.
     */
    abstract contract Context {
        function _msgSender() internal view virtual returns (address) {
            return msg.sender;
        }
    
        function _msgData() internal view virtual returns (bytes calldata) {
            return msg.data;
        }
    
        function _contextSuffixLength() internal view virtual returns (uint256) {
            return 0;
        }
    }
    
  • @openzeppelin/contracts/utils/Panic.sol
    // 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)
            }
        }
    }
    
  • @openzeppelin/contracts/utils/ReentrancyGuard.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;
        }
    }
    
  • @openzeppelin/contracts/utils/SlotDerivation.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.3.0) (utils/SlotDerivation.sol)
    // This file was procedurally generated from scripts/generate/templates/SlotDerivation.js.
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev Library for computing storage (and transient storage) locations from namespaces and deriving slots
     * corresponding to standard patterns. The derivation method for array and mapping matches the storage layout used by
     * the solidity language / compiler.
     *
     * See https://docs.soliditylang.org/en/v0.8.20/internals/layout_in_storage.html#mappings-and-dynamic-arrays[Solidity docs for mappings and dynamic arrays.].
     *
     * Example usage:
     * ```solidity
     * contract Example {
     *     // Add the library methods
     *     using StorageSlot for bytes32;
     *     using SlotDerivation for bytes32;
     *
     *     // Declare a namespace
     *     string private constant _NAMESPACE = "<namespace>"; // eg. OpenZeppelin.Slot
     *
     *     function setValueInNamespace(uint256 key, address newValue) internal {
     *         _NAMESPACE.erc7201Slot().deriveMapping(key).getAddressSlot().value = newValue;
     *     }
     *
     *     function getValueInNamespace(uint256 key) internal view returns (address) {
     *         return _NAMESPACE.erc7201Slot().deriveMapping(key).getAddressSlot().value;
     *     }
     * }
     * ```
     *
     * TIP: Consider using this library along with {StorageSlot}.
     *
     * NOTE: This library provides a way to manipulate storage locations in a non-standard way. Tooling for checking
     * upgrade safety will ignore the slots accessed through this library.
     *
     * _Available since v5.1._
     */
    library SlotDerivation {
        /**
         * @dev Derive an ERC-7201 slot from a string (namespace).
         */
        function erc7201Slot(string memory namespace) internal pure returns (bytes32 slot) {
            assembly ("memory-safe") {
                mstore(0x00, sub(keccak256(add(namespace, 0x20), mload(namespace)), 1))
                slot := and(keccak256(0x00, 0x20), not(0xff))
            }
        }
    
        /**
         * @dev Add an offset to a slot to get the n-th element of a structure or an array.
         */
        function offset(bytes32 slot, uint256 pos) internal pure returns (bytes32 result) {
            unchecked {
                return bytes32(uint256(slot) + pos);
            }
        }
    
        /**
         * @dev Derive the location of the first element in an array from the slot where the length is stored.
         */
        function deriveArray(bytes32 slot) internal pure returns (bytes32 result) {
            assembly ("memory-safe") {
                mstore(0x00, slot)
                result := keccak256(0x00, 0x20)
            }
        }
    
        /**
         * @dev Derive the location of a mapping element from the key.
         */
        function deriveMapping(bytes32 slot, address key) internal pure returns (bytes32 result) {
            assembly ("memory-safe") {
                mstore(0x00, and(key, shr(96, not(0))))
                mstore(0x20, slot)
                result := keccak256(0x00, 0x40)
            }
        }
    
        /**
         * @dev Derive the location of a mapping element from the key.
         */
        function deriveMapping(bytes32 slot, bool key) internal pure returns (bytes32 result) {
            assembly ("memory-safe") {
                mstore(0x00, iszero(iszero(key)))
                mstore(0x20, slot)
                result := keccak256(0x00, 0x40)
            }
        }
    
        /**
         * @dev Derive the location of a mapping element from the key.
         */
        function deriveMapping(bytes32 slot, bytes32 key) internal pure returns (bytes32 result) {
            assembly ("memory-safe") {
                mstore(0x00, key)
                mstore(0x20, slot)
                result := keccak256(0x00, 0x40)
            }
        }
    
        /**
         * @dev Derive the location of a mapping element from the key.
         */
        function deriveMapping(bytes32 slot, uint256 key) internal pure returns (bytes32 result) {
            assembly ("memory-safe") {
                mstore(0x00, key)
                mstore(0x20, slot)
                result := keccak256(0x00, 0x40)
            }
        }
    
        /**
         * @dev Derive the location of a mapping element from the key.
         */
        function deriveMapping(bytes32 slot, int256 key) internal pure returns (bytes32 result) {
            assembly ("memory-safe") {
                mstore(0x00, key)
                mstore(0x20, slot)
                result := keccak256(0x00, 0x40)
            }
        }
    
        /**
         * @dev Derive the location of a mapping element from the key.
         */
        function deriveMapping(bytes32 slot, string memory key) internal pure returns (bytes32 result) {
            assembly ("memory-safe") {
                let length := mload(key)
                let begin := add(key, 0x20)
                let end := add(begin, length)
                let cache := mload(end)
                mstore(end, slot)
                result := keccak256(begin, add(length, 0x20))
                mstore(end, cache)
            }
        }
    
        /**
         * @dev Derive the location of a mapping element from the key.
         */
        function deriveMapping(bytes32 slot, bytes memory key) internal pure returns (bytes32 result) {
            assembly ("memory-safe") {
                let length := mload(key)
                let begin := add(key, 0x20)
                let end := add(begin, length)
                let cache := mload(end)
                mstore(end, slot)
                result := keccak256(begin, add(length, 0x20))
                mstore(end, cache)
            }
        }
    }
    
  • @openzeppelin/contracts/utils/StorageSlot.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.1.0) (utils/StorageSlot.sol)
    // This file was procedurally generated from scripts/generate/templates/StorageSlot.js.
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev Library for reading and writing primitive types to specific storage slots.
     *
     * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
     * This library helps with reading and writing to such slots without the need for inline assembly.
     *
     * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
     *
     * Example usage to set ERC-1967 implementation slot:
     * ```solidity
     * contract ERC1967 {
     *     // Define the slot. Alternatively, use the SlotDerivation library to derive the slot.
     *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
     *
     *     function _getImplementation() internal view returns (address) {
     *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
     *     }
     *
     *     function _setImplementation(address newImplementation) internal {
     *         require(newImplementation.code.length > 0);
     *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
     *     }
     * }
     * ```
     *
     * TIP: Consider using this library along with {SlotDerivation}.
     */
    library StorageSlot {
        struct AddressSlot {
            address value;
        }
    
        struct BooleanSlot {
            bool value;
        }
    
        struct Bytes32Slot {
            bytes32 value;
        }
    
        struct Uint256Slot {
            uint256 value;
        }
    
        struct Int256Slot {
            int256 value;
        }
    
        struct StringSlot {
            string value;
        }
    
        struct BytesSlot {
            bytes value;
        }
    
        /**
         * @dev Returns an `AddressSlot` with member `value` located at `slot`.
         */
        function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
            assembly ("memory-safe") {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns a `BooleanSlot` with member `value` located at `slot`.
         */
        function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
            assembly ("memory-safe") {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns a `Bytes32Slot` with member `value` located at `slot`.
         */
        function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
            assembly ("memory-safe") {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns a `Uint256Slot` with member `value` located at `slot`.
         */
        function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
            assembly ("memory-safe") {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns a `Int256Slot` with member `value` located at `slot`.
         */
        function getInt256Slot(bytes32 slot) internal pure returns (Int256Slot storage r) {
            assembly ("memory-safe") {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns a `StringSlot` with member `value` located at `slot`.
         */
        function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
            assembly ("memory-safe") {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
         */
        function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
            assembly ("memory-safe") {
                r.slot := store.slot
            }
        }
    
        /**
         * @dev Returns a `BytesSlot` with member `value` located at `slot`.
         */
        function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
            assembly ("memory-safe") {
                r.slot := slot
            }
        }
    
        /**
         * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
         */
        function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
            assembly ("memory-safe") {
                r.slot := store.slot
            }
        }
    }
    
  • @openzeppelin/contracts/utils/introspection/IERC165.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)
    
    pragma solidity ^0.8.20;
    
    /**
     * @dev Interface of the ERC-165 standard, as defined in the
     * https://eips.ethereum.org/EIPS/eip-165[ERC].
     *
     * Implementers can declare support of contract interfaces, which can then be
     * queried by others ({ERC165Checker}).
     *
     * For an implementation, see {ERC165}.
     */
    interface IERC165 {
        /**
         * @dev Returns true if this contract implements the interface defined by
         * `interfaceId`. See the corresponding
         * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
         * to learn more about how these ids are created.
         *
         * This function call must use less than 30 000 gas.
         */
        function supportsInterface(bytes4 interfaceId) external view returns (bool);
    }
    
  • @openzeppelin/contracts/utils/math/Math.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.3.0) (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 Return the 512-bit addition of two uint256.
         *
         * The result is stored in two 256 variables such that sum = high * 2²⁵⁶ + low.
         */
        function add512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) {
            assembly ("memory-safe") {
                low := add(a, b)
                high := lt(low, a)
            }
        }
    
        /**
         * @dev Return the 512-bit multiplication of two uint256.
         *
         * The result is stored in two 256 variables such that product = high * 2²⁵⁶ + low.
         */
        function mul512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) {
            // 512-bit multiply [high low] = 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 = high * 2²⁵⁶ + low.
            assembly ("memory-safe") {
                let mm := mulmod(a, b, not(0))
                low := mul(a, b)
                high := sub(sub(mm, low), lt(mm, low))
            }
        }
    
        /**
         * @dev Returns the addition of two unsigned integers, with a success flag (no overflow).
         */
        function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
            unchecked {
                uint256 c = a + b;
                success = c >= a;
                result = c * SafeCast.toUint(success);
            }
        }
    
        /**
         * @dev Returns the subtraction of two unsigned integers, with a success flag (no overflow).
         */
        function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
            unchecked {
                uint256 c = a - b;
                success = c <= a;
                result = c * SafeCast.toUint(success);
            }
        }
    
        /**
         * @dev Returns the multiplication of two unsigned integers, with a success flag (no overflow).
         */
        function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
            unchecked {
                uint256 c = a * b;
                assembly ("memory-safe") {
                    // Only true when the multiplication doesn't overflow
                    // (c / a == b) || (a == 0)
                    success := or(eq(div(c, a), b), iszero(a))
                }
                // equivalent to: success ? c : 0
                result = c * SafeCast.toUint(success);
            }
        }
    
        /**
         * @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 {
                success = b > 0;
                assembly ("memory-safe") {
                    // The `DIV` opcode returns zero when the denominator is 0.
                    result := div(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 {
                success = b > 0;
                assembly ("memory-safe") {
                    // The `MOD` opcode returns zero when the denominator is 0.
                    result := mod(a, b)
                }
            }
        }
    
        /**
         * @dev Unsigned saturating addition, bounds to `2²⁵⁶ - 1` instead of overflowing.
         */
        function saturatingAdd(uint256 a, uint256 b) internal pure returns (uint256) {
            (bool success, uint256 result) = tryAdd(a, b);
            return ternary(success, result, type(uint256).max);
        }
    
        /**
         * @dev Unsigned saturating subtraction, bounds to zero instead of overflowing.
         */
        function saturatingSub(uint256 a, uint256 b) internal pure returns (uint256) {
            (, uint256 result) = trySub(a, b);
            return result;
        }
    
        /**
         * @dev Unsigned saturating multiplication, bounds to `2²⁵⁶ - 1` instead of overflowing.
         */
        function saturatingMul(uint256 a, uint256 b) internal pure returns (uint256) {
            (bool success, uint256 result) = tryMul(a, b);
            return ternary(success, result, type(uint256).max);
        }
    
        /**
         * @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 {
                (uint256 high, uint256 low) = mul512(x, y);
    
                // Handle non-overflow cases, 256 by 256 division.
                if (high == 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 low / denominator;
                }
    
                // Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0.
                if (denominator <= high) {
                    Panic.panic(ternary(denominator == 0, Panic.DIVISION_BY_ZERO, Panic.UNDER_OVERFLOW));
                }
    
                ///////////////////////////////////////////////
                // 512 by 256 division.
                ///////////////////////////////////////////////
    
                // Make division exact by subtracting the remainder from [high low].
                uint256 remainder;
                assembly ("memory-safe") {
                    // Compute remainder using mulmod.
                    remainder := mulmod(x, y, denominator)
    
                    // Subtract 256 bit number from 512 bit number.
                    high := sub(high, gt(remainder, low))
                    low := sub(low, 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 ("memory-safe") {
                    // Divide denominator by twos.
                    denominator := div(denominator, twos)
    
                    // Divide [high low] by twos.
                    low := div(low, 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 high into low.
                low |= high * 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 high
                // is no longer required.
                result = low * 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 Calculates floor(x * y >> n) with full precision. Throws if result overflows a uint256.
         */
        function mulShr(uint256 x, uint256 y, uint8 n) internal pure returns (uint256 result) {
            unchecked {
                (uint256 high, uint256 low) = mul512(x, y);
                if (high >= 1 << n) {
                    Panic.panic(Panic.UNDER_OVERFLOW);
                }
                return (high << (256 - n)) | (low >> n);
            }
        }
    
        /**
         * @dev Calculates x * y >> n with full precision, following the selected rounding direction.
         */
        function mulShr(uint256 x, uint256 y, uint8 n, Rounding rounding) internal pure returns (uint256) {
            return mulShr(x, y, n) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, 1 << n) > 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 x) internal pure returns (uint256 r) {
            // If value has upper 128 bits set, log2 result is at least 128
            r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
            // If upper 64 bits of 128-bit half set, add 64 to result
            r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
            // If upper 32 bits of 64-bit half set, add 32 to result
            r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
            // If upper 16 bits of 32-bit half set, add 16 to result
            r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
            // If upper 8 bits of 16-bit half set, add 8 to result
            r |= SafeCast.toUint((x >> r) > 0xff) << 3;
            // If upper 4 bits of 8-bit half set, add 4 to result
            r |= SafeCast.toUint((x >> r) > 0xf) << 2;
    
            // Shifts value right by the current result and use it as an index into this lookup table:
            //
            // | x (4 bits) |  index  | table[index] = MSB position |
            // |------------|---------|-----------------------------|
            // |    0000    |    0    |        table[0] = 0         |
            // |    0001    |    1    |        table[1] = 0         |
            // |    0010    |    2    |        table[2] = 1         |
            // |    0011    |    3    |        table[3] = 1         |
            // |    0100    |    4    |        table[4] = 2         |
            // |    0101    |    5    |        table[5] = 2         |
            // |    0110    |    6    |        table[6] = 2         |
            // |    0111    |    7    |        table[7] = 2         |
            // |    1000    |    8    |        table[8] = 3         |
            // |    1001    |    9    |        table[9] = 3         |
            // |    1010    |   10    |        table[10] = 3        |
            // |    1011    |   11    |        table[11] = 3        |
            // |    1100    |   12    |        table[12] = 3        |
            // |    1101    |   13    |        table[13] = 3        |
            // |    1110    |   14    |        table[14] = 3        |
            // |    1111    |   15    |        table[15] = 3        |
            //
            // The lookup table is represented as a 32-byte value with the MSB positions for 0-15 in the last 16 bytes.
            assembly ("memory-safe") {
                r := or(r, byte(shr(r, x), 0x0000010102020202030303030303030300000000000000000000000000000000))
            }
        }
    
        /**
         * @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 x) internal pure returns (uint256 r) {
            // If value has upper 128 bits set, log2 result is at least 128
            r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
            // If upper 64 bits of 128-bit half set, add 64 to result
            r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
            // If upper 32 bits of 64-bit half set, add 32 to result
            r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
            // If upper 16 bits of 32-bit half set, add 16 to result
            r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
            // Add 1 if upper 8 bits of 16-bit half set, and divide accumulated result by 8
            return (r >> 3) | SafeCast.toUint((x >> r) > 0xff);
        }
    
        /**
         * @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;
        }
    }
    
  • @openzeppelin/contracts/utils/math/SafeCast.sol
    // 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))
            }
        }
    }
    
  • @openzeppelin/contracts/utils/structs/EnumerableSet.sol
    // SPDX-License-Identifier: MIT
    // OpenZeppelin Contracts (last updated v5.3.0) (utils/structs/EnumerableSet.sol)
    // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.
    
    pragma solidity ^0.8.20;
    
    import {Arrays} from "../Arrays.sol";
    
    /**
     * @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.
     * - Set can be cleared (all elements removed) in O(n).
     *
     * ```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 Removes all the values from a set. O(n).
         *
         * WARNING: Developers should keep in mind that this function has an unbounded cost and using it may render the
         * function uncallable if the set grows to the point where clearing it consumes too much gas to fit in a block.
         */
        function _clear(Set storage set) private {
            uint256 len = _length(set);
            for (uint256 i = 0; i < len; ++i) {
                delete set._positions[set._values[i]];
            }
            Arrays.unsafeSetLength(set._values, 0);
        }
    
        /**
         * @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 Removes all the values from a set. O(n).
         *
         * WARNING: Developers should keep in mind that this function has an unbounded cost and using it may render the
         * function uncallable if the set grows to the point where clearing it consumes too much gas to fit in a block.
         */
        function clear(Bytes32Set storage set) internal {
            _clear(set._inner);
        }
    
        /**
         * @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 Removes all the values from a set. O(n).
         *
         * WARNING: Developers should keep in mind that this function has an unbounded cost and using it may render the
         * function uncallable if the set grows to the point where clearing it consumes too much gas to fit in a block.
         */
        function clear(AddressSet storage set) internal {
            _clear(set._inner);
        }
    
        /**
         * @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 Removes all the values from a set. O(n).
         *
         * WARNING: Developers should keep in mind that this function has an unbounded cost and using it may render the
         * function uncallable if the set grows to the point where clearing it consumes too much gas to fit in a block.
         */
        function clear(UintSet storage set) internal {
            _clear(set._inner);
        }
    
        /**
         * @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;
        }
    }
    
  • contracts/presale/KeysLibrary.sol
    // SPDX-License-Identifier: BUSL-1.1
    
    pragma solidity ^0.8.20;
    
    library KeysLibrary {
        // Global keys for presale data (shared constants)
        bytes32 public constant KEY_START_TIME = keccak256("presale_startTime");
        bytes32 public constant KEY_END_TIME = keccak256("presale_endTime");
        bytes32 public constant KEY_TOTAL_RAISED = keccak256("presale_totalRaised");
        bytes32 public constant KEY_TOTAL_SOLD = keccak256("presale_totalSold");
        bytes32 public constant KEY_TOTAL_BONUS = keccak256("presale_totalBonus");
        bytes32 public constant KEY_TOTAL_EARLY_BIRD_BONUS = keccak256("presale_totalEarlyBirdBonus"); // New: Global early bird bonus
        bytes32 public constant KEY_TOTAL_NFT_BONUS = keccak256("presale_totalNftBonus"); // New: Global NFT bonus
        bytes32 public constant KEY_USER_COUNT = keccak256("presale_userCount");
        bytes32 public constant KEY_SELL_ADDRESS = keccak256("presale_sellAddress");
        bytes32 public constant KEY_FUND_TO = keccak256("presale_fundTo");
        bytes32 public constant KEY_FINALIZED = keccak256("presale_finalized");
        bytes32 public constant KEY_SILVER_NFT = keccak256("presale_silverNFT");
        bytes32 public constant KEY_GOLD_NFT = keccak256("presale_goldNFT");
        bytes32 public constant KEY_PLATINUM_NFT = keccak256("presale_platinumNFT");
    
        // Prefixes for per-user composite keys
        bytes32 public constant KEY_PREFIX_USER_UINT = keccak256("presale_user_uint_");
        bytes32 public constant KEY_PREFIX_USER_BOOL = keccak256("presale_user_bool_");
    
        // User-specific suffixes (for composite keys)
        bytes32 public constant USER_SUFFIX_CONTRIBUTIONS = keccak256("contributions");
        bytes32 public constant USER_SUFFIX_PURCHASED_TOKENS = keccak256("purchasedTokens");
        bytes32 public constant USER_SUFFIX_BONUS_TOKENS = keccak256("bonusTokens");
        bytes32 public constant USER_SUFFIX_CLAIMED_TOKENS = keccak256("claimedTokens");
        bytes32 public constant USER_SUFFIX_REFUNDS = keccak256("refunds");
        bytes32 public constant USER_SUFFIX_HAS_PURCHASED = keccak256("hasPurchased");
        bytes32 public constant USER_SUFFIX_EARLY_BIRD_BONUS = keccak256("earlyBirdBonus");
        bytes32 public constant USER_SUFFIX_NFT_BONUS = keccak256("nftBonus");
    
        // Helper function to generate composite user key
        function getUserUintKey(bytes32 suffix, address user) internal pure returns (bytes32) {
            return keccak256(abi.encode(KEY_PREFIX_USER_UINT, suffix, user));
        }
    
        function getUserBoolKey(bytes32 suffix, address user) internal pure returns (bytes32) {
            return keccak256(abi.encode(KEY_PREFIX_USER_BOOL, suffix, user));
        }
    }
  • contracts/presale/TokenBase.sol
    // SPDX-License-Identifier: BUSL-1.1
    
    pragma solidity ^0.8.20;
    
    import "../repo/RoleBase.sol";
    import "../utils/EnumerableValues.sol";
    import "../utils/Role.sol";
    
    contract TokenBase {
    
        using EnumerableSet for EnumerableSet.Bytes32Set;
        using EnumerableSet for EnumerableSet.AddressSet;
        using EnumerableSet for EnumerableSet.UintSet;
        using EnumerableValues for EnumerableSet.Bytes32Set;
        using EnumerableValues for EnumerableSet.AddressSet;
        using EnumerableValues for EnumerableSet.UintSet;
    
        bytes32 public constant ROLE_TOKEN_WRITER = keccak256(abi.encode("TOKEN_WRITER"));
    
        RoleBase roleBase;
    
        mapping(bytes32 => uint256) public uintValues;
        mapping(bytes32 => int256) public intValues;
        mapping(bytes32 => address) public addressValues;
        mapping(bytes32 => bool) public boolValues;
        mapping(bytes32 => string) public stringValues;
        mapping(bytes32 => bytes32) public bytes32Values;
    
        mapping(bytes32 => uint256[]) public uintArrayValues;
        mapping(bytes32 => int256[]) public intArrayValues;
        mapping(bytes32 => address[]) public addressArrayValues;
        mapping(bytes32 => bool[]) public boolArrayValues;
        mapping(bytes32 => string[]) public stringArrayValues;
        mapping(bytes32 => bytes32[]) public bytes32ArrayValues;
    
        mapping(bytes32 => EnumerableSet.AddressSet) internal addressSets;
        mapping(bytes32 => EnumerableSet.Bytes32Set) internal bytes32Sets;
        mapping(bytes32 => EnumerableSet.UintSet) internal uintSets;
    
        error UnauthorizedOrderWrite(address account);
    
        modifier onlyTokenWriter() {
            if (!roleBase.hasRole(msg.sender, ROLE_TOKEN_WRITER)) {
                revert UnauthorizedOrderWrite(msg.sender);
            }
            _;
        }
    
        constructor(RoleBase _roleBase) {
            roleBase = _roleBase;
        }
    
        function getUint(bytes32 key) external view returns (uint256) {
            return uintValues[key];
        }
    
        function setUint(bytes32 key, uint256 value) external onlyTokenWriter returns (uint256) {
            uintValues[key] = value;
            return value;
        }
    
        function removeUint(bytes32 key) external onlyTokenWriter {
            delete uintValues[key];
        }
    
        function addDeltaToUint(bytes32 key, int256 value, string memory errMsg) external onlyTokenWriter returns (uint256) {
            uint256 curValue = uintValues[key];
            if (value < 0 && uint256(-value) > curValue) {
                revert(errMsg);
            }
            uint256 nextUint;
            if (value >= 0) {
                nextUint = curValue + uint256(value);
            } else {
                nextUint = curValue - uint256(-value);
            }
    
            uintValues[key] = nextUint;
            return nextUint;
        }
    
        function incrementUint(bytes32 key, uint256 value) external onlyTokenWriter returns (uint256) {
            uint256 nextUint = uintValues[key] + value;
            uintValues[key] = nextUint;
            return nextUint;
        }
    
        function decrementUint(bytes32 key, uint256 value) external onlyTokenWriter returns (uint256) {
            uint256 nextUint = uintValues[key] - value;
            uintValues[key] = nextUint;
            return nextUint;
        }
    
        function getInt(bytes32 key) external view returns (int256) {
            return intValues[key];
        }
    
        function setInt(bytes32 key, int256 value) external onlyTokenWriter returns (int256) {
            intValues[key] = value;
            return value;
        }
    
        function removeInt(bytes32 key) external onlyTokenWriter {
            delete intValues[key];
        }
    
        function incrementInt(bytes32 key, int256 value) external onlyTokenWriter returns (int256) {
            int256 nextInt = intValues[key] + value;
            intValues[key] = nextInt;
            return nextInt;
        }
    
        function decrementInt(bytes32 key, int256 value) external onlyTokenWriter returns (int256) {
            int256 nextInt = intValues[key] - value;
            intValues[key] = nextInt;
            return nextInt;
        }
    
        function getAddress(bytes32 key) external view returns (address) {
            return addressValues[key];
        }
    
        function setAddress(bytes32 key, address value) external onlyTokenWriter returns (address) {
            addressValues[key] = value;
            return value;
        }
    
        function removeAddress(bytes32 key) external onlyTokenWriter {
            delete addressValues[key];
        }
    
        function getBool(bytes32 key) external view returns (bool) {
            return boolValues[key];
        }
    
        function setBool(bytes32 key, bool value) external onlyTokenWriter returns (bool) {
            boolValues[key] = value;
            return value;
        }
    
        function removeBool(bytes32 key) external onlyTokenWriter {
            delete boolValues[key];
        }
    
        function getString(bytes32 key) external view returns (string memory) {
            return stringValues[key];
        }
    
        function setString(bytes32 key, string memory value) external onlyTokenWriter returns (string memory) {
            stringValues[key] = value;
            return value;
        }
    
        function removeString(bytes32 key) external onlyTokenWriter {
            delete stringValues[key];
        }
    
        function getBytes32(bytes32 key) external view returns (bytes32) {
            return bytes32Values[key];
        }
    
        function setBytes32(bytes32 key, bytes32 value) external onlyTokenWriter returns (bytes32) {
            bytes32Values[key] = value;
            return value;
        }
    
        function removeBytes32(bytes32 key) external onlyTokenWriter {
            delete bytes32Values[key];
        }
    
        function getUintArray(bytes32 key) external view returns (uint256[] memory) {
            return uintArrayValues[key];
        }
    
        function setUintArray(bytes32 key, uint256[] memory value) external onlyTokenWriter {
            uintArrayValues[key] = value;
        }
    
        function removeUintArray(bytes32 key) external onlyTokenWriter {
            delete uintArrayValues[key];
        }
    
        function getIntArray(bytes32 key) external view returns (int256[] memory) {
            return intArrayValues[key];
        }
    
        function setIntArray(bytes32 key, int256[] memory value) external onlyTokenWriter {
            intArrayValues[key] = value;
        }
    
        function removeIntArray(bytes32 key) external onlyTokenWriter {
            delete intArrayValues[key];
        }
    
        function getAddressArray(bytes32 key) external view returns (address[] memory) {
            return addressArrayValues[key];
        }
    
        function setAddressArray(bytes32 key, address[] memory value) external onlyTokenWriter {
            addressArrayValues[key] = value;
        }
    
        function removeAddressArray(bytes32 key) external onlyTokenWriter {
            delete addressArrayValues[key];
        }
    
        function getBoolArray(bytes32 key) external view returns (bool[] memory) {
            return boolArrayValues[key];
        }
    
        function setBoolArray(bytes32 key, bool[] memory value) external onlyTokenWriter {
            boolArrayValues[key] = value;
        }
    
        function removeBoolArray(bytes32 key) external onlyTokenWriter {
            delete boolArrayValues[key];
        }
    
        function getStringArray(bytes32 key) external view returns (string[] memory) {
            return stringArrayValues[key];
        }
    
        function setStringArray(bytes32 key, string[] memory value) external onlyTokenWriter {
            stringArrayValues[key] = value;
        }
    
        function removeStringArray(bytes32 key) external onlyTokenWriter {
            delete stringArrayValues[key];
        }
    
        function getBytes32Array(bytes32 key) external view returns (bytes32[] memory) {
            return bytes32ArrayValues[key];
        }
    
        function setBytes32Array(bytes32 key, bytes32[] memory value) external onlyTokenWriter {
            bytes32ArrayValues[key] = value;
        }
    
        function removeBytes32Array(bytes32 key) external onlyTokenWriter {
            delete bytes32ArrayValues[key];
        }
    
        function containsAddress(bytes32 setKey, address value) external view returns (bool) {
            return addressSets[setKey].contains(value);
        }
    
        function getAddressCount(bytes32 setKey) external view returns (uint256) {
            return addressSets[setKey].length();
        }
    
        function getAddressValuesAt(bytes32 setKey, uint256 start, uint256 end) external view returns (address[] memory) {
            return addressSets[setKey].valuesAt(start, end);
        }
    
        function addAddress(bytes32 setKey, address value) external onlyTokenWriter {
            addressSets[setKey].add(value);
        }
    
        function removeAddress(bytes32 setKey, address value) external onlyTokenWriter {
            addressSets[setKey].remove(value);
        }
    
        function containsBytes32(bytes32 setKey, bytes32 value) external view returns (bool) {
            return bytes32Sets[setKey].contains(value);
        }
    
        function getBytes32Count(bytes32 setKey) external view returns (uint256) {
            return bytes32Sets[setKey].length();
        }
    
        function getBytes32ValuesAt(bytes32 setKey, uint256 start, uint256 end) external view returns (bytes32[] memory) {
            return bytes32Sets[setKey].valuesAt(start, end);
        }
    
        function addBytes32(bytes32 setKey, bytes32 value) external onlyTokenWriter {
            bytes32Sets[setKey].add(value);
        }
    
        function removeBytes32(bytes32 setKey, bytes32 value) external onlyTokenWriter {
            bytes32Sets[setKey].remove(value);
        }
    
        function containsUint(bytes32 setKey, uint256 value) external view returns (bool) {
            return uintSets[setKey].contains(value);
        }
    
        function getUintCount(bytes32 setKey) external view returns (uint256) {
            return uintSets[setKey].length();
        }
    
        function getUintValuesAt(bytes32 setKey, uint256 start, uint256 end) external view returns (uint256[] memory) {
            return uintSets[setKey].valuesAt(start, end);
        }
    
        function addUint(bytes32 setKey, uint256 value) external onlyTokenWriter {
            uintSets[setKey].add(value);
        }
    
        function removeUint(bytes32 setKey, uint256 value) external onlyTokenWriter {
            uintSets[setKey].remove(value);
        }
    
    }
  • contracts/repo/RoleBase.sol
    // SPDX-License-Identifier: BUSL-1.1
    
    pragma solidity ^0.8.20;
    
    import "../utils/Role.sol";
    
    contract RoleBase {
        mapping(address => mapping (bytes32 => bool)) roleStore;
    
        error UnauthorizedRoleAdmin(address account);
    
        modifier onlyRoleAdmin() {
            if (!hasRole(msg.sender, Role.ROLE_ADMIN)) {
                revert UnauthorizedRoleAdmin(msg.sender);
            }
            _;
        }
    
        constructor() {
            _grantRole(msg.sender, Role.ROLE_ADMIN);
        }
    
        function grantRole(address account, bytes32 roleKey) external onlyRoleAdmin {
            _grantRole(account, roleKey);
        }
    
        function revokeRole(address account, bytes32 roleKey) external onlyRoleAdmin {
            _revokeRole(account, roleKey);
        }
    
        function hasRole(address account, bytes32 roleKey) public view returns (bool) {
            return roleStore[account][roleKey];
        }
    
        function _grantRole(address account, bytes32 roleKey) internal {
            roleStore[account][roleKey] = true;
        }
    
        function _revokeRole(address account, bytes32 roleKey) internal {
            roleStore[account][roleKey] = false;
        }
    
    }
  • contracts/utils/EnumerableValues.sol
    // SPDX-License-Identifier: BUSL-1.1
    
    pragma solidity ^0.8.20;
    
    import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
    
    library EnumerableValues {
        using EnumerableSet for EnumerableSet.Bytes32Set;
        using EnumerableSet for EnumerableSet.AddressSet;
        using EnumerableSet for EnumerableSet.UintSet;
    
        function valuesAt(EnumerableSet.Bytes32Set storage set, uint256 start, uint256 end) internal view returns (bytes32[] memory) {
            uint256 max = set.length();
            if (end > max) { end = max; }
    
            bytes32[] memory items = new bytes32[](end - start);
            for (uint256 i = start; i < end; i++) {
                items[i - start] = set.at(i);
            }
    
            return items;
        }
    
        function valuesAt(EnumerableSet.AddressSet storage set, uint256 start, uint256 end) internal view returns (address[] memory) {
            uint256 max = set.length();
            if (end > max) { end = max; }
    
            address[] memory items = new address[](end - start);
            for (uint256 i = start; i < end; i++) {
                items[i - start] = set.at(i);
            }
    
            return items;
        }
    
        function valuesAt(EnumerableSet.UintSet storage set, uint256 start, uint256 end) internal view returns (uint256[] memory) {
            if (start >= set.length()) {
                return new uint256[](0);
            }
    
            uint256 max = set.length();
            if (end > max) { end = max; }
    
            uint256[] memory items = new uint256[](end - start);
            for (uint256 i = start; i < end; i++) {
                items[i - start] = set.at(i);
            }
    
            return items;
        }
    }
    
  • contracts/utils/Role.sol
    // SPDX-License-Identifier: BUSL-1.1
    
    pragma solidity ^0.8.20;
    
    library Role {
        uint256 public constant ACCESS_NOACCESS = 0;
        uint256 public constant ACCESS_DEPOSIT = 1;
        uint256 public constant ACCESS_READER = 2;
        uint256 public constant ACCESS_AUTHOR = 3;
        uint256 public constant ACCESS_EDITOR = 4;
        uint256 public constant ACCESS_DESIGNER = 5;
        uint256 public constant ACCESS_MANAGER = 6;
    
        uint256 public constant DATA_READ = 4;
        uint256 public constant DATA_WRITE = 2;
        uint256 public constant DATA_EXECUTE = 1;
    
        bytes32 public constant ROLE_ADMIN = keccak256(abi.encode("ROLE_ADMIN"));
        bytes32 public constant ROLE_ACCESSNOACCESS = keccak256(abi.encode("ROLE_ACCESS", ACCESS_NOACCESS));
        bytes32 public constant ROLE_DATA_WRITE = keccak256(abi.encode("DATA_ACCESS", DATA_WRITE));
        bytes32 public constant ROLE_POOL_KEEPER = keccak256(abi.encode("POOL_KEEPER"));
        bytes32 public constant ROLE_ORACLE_KEEPER = keccak256(abi.encode("ORACLE_KEEPER"));
    }
ABI · 59 entries
json
[
  {
    "type": "constructor",
    "inputs": [
      {
        "name": "_startTime",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "_endTime",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "_fundTo",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_tokenBase",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_silverNFT",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_goldNFT",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_platinumNFT",
        "type": "address",
        "internalType": "address"
      }
    ],
    "stateMutability": "nonpayable"
  },
  {
    "name": "OwnableInvalidOwner",
    "type": "error",
    "inputs": [
      {
        "name": "owner",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "name": "OwnableUnauthorizedAccount",
    "type": "error",
    "inputs": [
      {
        "name": "account",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "name": "ReentrancyGuardReentrantCall",
    "type": "error",
    "inputs": []
  },
  {
    "name": "EndTimeUpdated",
    "type": "event",
    "inputs": [
      {
        "name": "newEndTime",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "name": "FundToUpdated",
    "type": "event",
    "inputs": [
      {
        "name": "newFundTo",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "name": "FundsTransferred",
    "type": "event",
    "inputs": [
      {
        "name": "fundTo",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "amount",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "name": "NftContractsUpdated",
    "type": "event",
    "inputs": [
      {
        "name": "silver",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      },
      {
        "name": "gold",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      },
      {
        "name": "platinum",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "name": "OwnershipTransferred",
    "type": "event",
    "inputs": [
      {
        "name": "previousOwner",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "newOwner",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "name": "PresaleFinalized",
    "type": "event",
    "inputs": [
      {
        "name": "success",
        "type": "bool",
        "indexed": false,
        "internalType": "bool"
      }
    ],
    "anonymous": false
  },
  {
    "name": "PresaleInitialized",
    "type": "event",
    "inputs": [
      {
        "name": "startTime",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      },
      {
        "name": "endTime",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      },
      {
        "name": "fundTo",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      },
      {
        "name": "silverNFT",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      },
      {
        "name": "goldNFT",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      },
      {
        "name": "platinumNFT",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "name": "RefundClaimed",
    "type": "event",
    "inputs": [
      {
        "name": "claimer",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "amount",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "name": "StartTimeUpdated",
    "type": "event",
    "inputs": [
      {
        "name": "newStartTime",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "name": "TokensClaimed",
    "type": "event",
    "inputs": [
      {
        "name": "claimer",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "amount",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "name": "TokensPurchased",
    "type": "event",
    "inputs": [
      {
        "name": "buyer",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "amountTokenSell",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      },
      {
        "name": "earlyBirdBonusTokenSell",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      },
      {
        "name": "nftBonusTokenSell",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      },
      {
        "name": "amountMainCoin",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "name": "BASIS_DIVISOR",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "DECIMALS_BUY",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "DECIMALS_SELL",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "HARD_CAP",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "INITIAL_PRICE",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "MAX_PURCHASE",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "MIN_PURCHASE",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "NFT_GOLD_FACTOR",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "NFT_MAX_SCORE",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "NFT_PLATINUM_FACTOR",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "NFT_REWARD_DIVISOR",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "NFT_SILVER_FACTOR",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "OVER_HARD_BONUS_RATE",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "PRICE_RATE",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "SELL_TOKEN_TOTAL",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "SOFT_CAP",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "accountInfo",
    "type": "function",
    "inputs": [
      {
        "name": "_account",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "uint256[]",
        "internalType": "uint256[]"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "basicInfo",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256[]",
        "internalType": "uint256[]"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "buyTokens",
    "type": "function",
    "inputs": [],
    "outputs": [],
    "stateMutability": "payable"
  },
  {
    "name": "claimRefund",
    "type": "function",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "finalizePresale",
    "type": "function",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "finalized",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "bool",
        "internalType": "bool"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "getStage",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "getUserNftScore",
    "type": "function",
    "inputs": [
      {
        "name": "user",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [
      {
        "name": "score",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "bonusRate",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "goldNFT",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "contract IERC721"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "initializePresale",
    "type": "function",
    "inputs": [
      {
        "name": "_startTime",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "_endTime",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "_fundTo",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_silverNFT",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_goldNFT",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_platinumNFT",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "initialized",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "bool",
        "internalType": "bool"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "owner",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "platinumNFT",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "contract IERC721"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "renounceOwnership",
    "type": "function",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "setEndTime",
    "type": "function",
    "inputs": [
      {
        "name": "_newEndTime",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "setFundTo",
    "type": "function",
    "inputs": [
      {
        "name": "_newFundTo",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "setNftContracts",
    "type": "function",
    "inputs": [
      {
        "name": "_silverNFT",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_goldNFT",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "_platinumNFT",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "setStartTime",
    "type": "function",
    "inputs": [
      {
        "name": "_newStartTime",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "silverNFT",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "contract IERC721"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "stageInfo",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "stages",
    "type": "function",
    "inputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "outputs": [
      {
        "name": "start",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "end",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "price",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "bonusPercentage",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "status",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256[]",
        "internalType": "uint256[]"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "tokenBase",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "contract TokenBase"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "tokens",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address[]",
        "internalType": "address[]"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "transferOwnership",
    "type": "function",
    "inputs": [
      {
        "name": "newOwner",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "name": "userInfo",
    "type": "function",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256[]",
        "internalType": "uint256[]"
      }
    ],
    "stateMutability": "view"
  },
  {
    "name": "withdrawFunds",
    "type": "function",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "receive",
    "stateMutability": "payable"
  }
]