ERC-721
Overview
Max Total Supply
128 Ronin
Holders
80
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
GmStudioRankedAuction
Compiler Version
v0.8.20+commit.a1b79de6
Optimization Enabled:
Yes with 50 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import "./helpers/OwnableUpgradeable.sol"; import "./helpers/ERC721EnumerableUpgradeable.sol"; import "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; interface IERC2981 { /** * @notice Called with the sale price to determine how much royalty is owed and to whom. * @param tokenId - the NFT asset queried for royalty information. * @param salePrice - the sale price of the NFT asset specified by `tokenId`. * @return receiver - address of who should be sent the royalty payment. * @return royaltyAmount - the royalty payment amount for `salePrice`. */ function royaltyInfo( uint256 tokenId, uint256 salePrice ) external view returns (address receiver, uint256 royaltyAmount); } interface IDelegateRegistry { /** * @notice Checks if a delegate has been granted permission for an ERC721 token. * @param delegate The address of the delegate. * @param vault The address of the vault (original owner). * @param contract_ The address of the ERC721 contract. * @param tokenId The ID of the token. * @param role The role assigned to the delegate. * @return True if the delegate has permission, false otherwise. */ function checkDelegateForERC721( address delegate, address vault, address contract_, uint256 tokenId, bytes32 role ) external view returns (bool); } /// @title GmStudioRankedAuction /// @notice A ranked auction contract for gmDAO NFTs with allowlist and discount functionalities. contract GmStudioRankedAuction is ERC721EnumerableUpgradeable, OwnableUpgradeable, IERC2981, ReentrancyGuard { // Mapping of bid IDs to BidNode structs representing the bids. mapping(uint32 => BidNode) public bidNodes; // Tracks whether an address has claimed their allowlist mint. mapping(address => bool) private _addressToAllowlistClaimed; // Bitmap to track used gmDAO tokens for discounts (supports up to 1024 tokens). uint256[4] private _gmDaoDiscountFlags; // Ether amount available for withdrawal by the owner. uint256 private _withdrawable; // The final clearing price after the auction ends. uint96 private finalClearingPrice; // Timestamp when the auction ends. uint56 public auctionEndTimeStamp; // ID of the lowest winning bid (tail of the winning bids linked list). uint32 private winningTail; // Counter for generating unique bid IDs. uint32 public bidCount; // Number of winning bids in the auction. uint32 private numberOfWinningBids; // Number of winning bids that claimed an NFT uint32 private numberOfClaimedWinningBids; // Amount minted before auction uint32 private mintedBeforeAuction; // Bool for public mint bool private allowPublic; /// @notice Struct representing the project configuration and parameters. struct Project { string name; // Name of the project/token string symbol; // symbol of the project/token string tokenBase; // Base URI for token metadata bytes32 merkleRoot; // Merkle root for the allowlist (used for allowlist minting) address gmV3Contract; // Address of the gmV3Contract (for gmDAO tokens) uint96 royalty; // Royalty percentage (in basis points, out of 10000) address payable ownerAddress; // Address of the contract owner uint96 gmDiscount; // Discount percentage for gmDAO token holders (in basis points, out of 10000) address payable royaltyAddress; // Address to receive royalty payments uint96 minBid; // Minimum bid amount (in wei) address payable artistAddress; // Address of the artist uint96 allowListPrice; // Price for allowlist minting (in wei) address payable gmDaoAddress; // gmDAO address uint56 auctionStartTimeStamp; // Auction start time (UNIX timestamp in seconds) uint32 maxSupply; // Maximum number of tokens to mint address delegateRegistry; // Address of delegate registry uint56 allowListStartTimeStamp; // Allowlist minting start time (UNIX timestamp in seconds) uint32 auctionDuration; // Duration of the auction (in seconds) uint32 auctionExtension; // Time added when a bid is placed near the end (in seconds) uint32 auctionExtenderTimeFrame; // Timeframe near the end during which bids extend the auction (in seconds) uint32 maxAuctionExtension; // Maximum total time the auction can be extended (in seconds) uint24 gmDaoShare; // Share of proceeds for gmDAO (in basis points, out of 10000) } /** * @notice Struct representing a bid in the auction. * @dev Contains bidder address and packed data for: * - 96 bits: amount * - 32 bits: next * - 32 bits: prev * - bit 0: isWinning * - bit 1: isClaimed * (Total = 96+32+32+2 bits used, fits in 256 bits). */ struct BidNode { address bidder; // 20 bytes uint256 data; // Packed data for amount, next, prev, flags } // Instance of the project configuration. Project private project; // Event emitted when a bid is submitted. event BidSubmitted( address indexed bidder, uint32 bidId, uint256 amount, uint256 timestamp ); // Event emitted when a bid is updated. event BidUpdated( address indexed bidder, uint32 bidId, uint256 newAmount, uint256 timestamp ); // Event emitted when the auction is extended. event AuctionExtended(uint256 newEndTime); /** * @notice Initializes the project with the provided project data. * @dev This function initializes the ERC721 and Ownable contracts, sets up the project data, and calculates the auction end timestamp. * @param _p The project data struct containing all configuration parameters. */ function initProject(Project calldata _p) public initializer { // Initialize the ERC721 contract with the project name and symbol. __ERC721_init(_p.name, _p.symbol); // Initialize the Ownable contract with the owner's address. __Ownable_init(_p.ownerAddress); // Store the project data. project = _p; // Calculate the auction end timestamp based on the start time and duration. auctionEndTimeStamp = project.auctionStartTimeStamp + project.auctionDuration; } /** * @notice Mint tokens to a specified address (owner only). * @dev Allows the owner to mint a specified number of tokens to a given address, subject to certain conditions. * @param count The number of tokens to mint. * @param a The address to receive the minted tokens. */ function ownerMint(uint24 count, address a) external onlyOwner { // If the auction is currently in progress, the owner cannot mint. if ( block.timestamp >= project.auctionStartTimeStamp && block.timestamp <= auctionEndTimeStamp ) { revert("Auction in progress"); } // If the auction has ended but not yet finalized, finalize it. if (block.timestamp > auctionEndTimeStamp && finalClearingPrice == 0) { _finalizeAuction(); } uint256 totalSupply = _owners.length; uint32 unclaimedWinningBids = 0; // If the auction has been finalized, calculate unclaimed winning bids. if (finalClearingPrice != 0) { unclaimedWinningBids = numberOfWinningBids - numberOfClaimedWinningBids; } // Calculate the number of tokens available for the owner to mint. uint32 availableForOwner = project.maxSupply - uint32(totalSupply) - unclaimedWinningBids; // Ensure the owner does not mint more tokens than allowed. require(count <= availableForOwner, "Too many"); // Mint the specified number of tokens to the address 'a'. for (uint256 i; i < count; ) { unchecked { uint256 tokenId = totalSupply + i; _mint(a, tokenId); i++; } } } /** * @notice Mint a token to an allowlisted address if conditions are met. * @dev Mints a token to the specified address 'a' if they are on the allowlist and haven't already claimed. * @param proof The Merkle proof verifying the address is on the allowlist. * @param a The address to mint the token to. */ function allowListMint( bytes32[] calldata proof, address a ) external payable { // Ensure the allowlist minting has started. require( block.timestamp >= project.allowListStartTimeStamp, "AL not started" ); // Ensure the allowlist minting has not ended. require(block.timestamp < project.auctionStartTimeStamp, "AL ended"); // Verify that the address 'a' is on the allowlist using the Merkle proof. require( MerkleProof.verify( proof, project.merkleRoot, keccak256(abi.encodePacked(a)) ), "Not on AL" ); // Ensure the address hasn't already claimed their allowlist mint. require(_addressToAllowlistClaimed[a] == false, "Claimed"); uint256 totalSupply = _owners.length; // Ensure the total supply doesn't exceed the maximum supply. require(totalSupply + 1 <= project.maxSupply, "Minted out"); // Ensure the correct amount of Ether is provided. require(project.allowListPrice <= msg.value, "Invalid funds"); // Prevent contracts from minting. require(msg.sender == tx.origin, "No contracts"); unchecked { uint256 tokenId = totalSupply; // Mark the address as having claimed their allowlist mint. _addressToAllowlistClaimed[a] = true; // Add the funds to the withdrawable balance. _withdrawable += msg.value; // Mint the token to address 'a'. _mint(a, tokenId); } } function publicMint(uint24 count, address a) external payable { require(block.timestamp > auctionEndTimeStamp, "Auction ongoing"); require(allowPublic, "Public not allowed"); require(count > 0, "Must mint at least one"); require(msg.sender == tx.origin, "No contracts"); if (finalClearingPrice == 0) { _finalizeAuction(); } uint256 totalSupply = _owners.length; // Calculate the number of unclaimed winning bids. uint32 unclaimedWinningBids = numberOfWinningBids - numberOfClaimedWinningBids; // Calculate the number of tokens available for public minting. uint32 availableForPublic = project.maxSupply - uint32(totalSupply) - unclaimedWinningBids; // Ensure the public does not mint more tokens than allowed. require(count <= availableForPublic, "Too many"); // Ensure the correct amount of Ether is provided. uint256 totalPrice = count * project.minBid; require(msg.value >= totalPrice, "Insufficient funds"); // Mint the specified number of tokens to the address 'a'. for (uint256 i; i < count; ) { unchecked { uint256 tokenId = totalSupply + i; _mint(a, tokenId); i++; } } // Add funds to withdrawable balance _withdrawable += totalPrice; } /** * @notice Places a new bid into the auction. * @dev Users can place multiple bids. The bid is inserted into the ordered linked list of bids. * @param estimatedNodePositionId The estimated position in the linked list for optimization. */ function placeBid( uint32 estimatedNodePositionId ) external payable nonReentrant { // Ensure the auction has started. require( block.timestamp >= project.auctionStartTimeStamp, "Not started" ); // Ensure the estimated node position is valid. require(estimatedNodePositionId <= bidCount, "Bad estimate"); // Ensure the auction has not ended. require(block.timestamp <= auctionEndTimeStamp, "Auction ended"); // Ensure the bid amount meets the minimum bid requirement. require(msg.value >= project.minBid, "Bid too low"); // Prevent contracts from placing bids. require(msg.sender == tx.origin, "No contracts"); // Get the cutoff bid amount required to be a winning bid. uint96 cutoffAmount = getCutoffBidAmount(); // Calculate the maximum number of winning bids. uint256 maxWinners = project.maxSupply - _owners.length; if (bidCount >= maxWinners) { // If the list of bids is full, the new bid must be strictly greater than the cutoff amount. require(msg.value > cutoffAmount, "Bid too low"); } else { // If the list is not full, the bid must be at least the cutoff amount (minimum bid). require(msg.value >= cutoffAmount, "Bid too low"); } // Generate a new bid ID. uint32 newBidId = ++bidCount; // Insert the new bid into the ordered linked list. _insertNode( estimatedNodePositionId, newBidId, uint96(msg.value), msg.sender ); // If the number of bids exceeds the maximum number of winners, adjust the winning tail. if (bidCount > maxWinners) { _adjustWinningTail(); } // Extend the auction if the bid was placed near the end. _extendAuctionIfNeeded(); // Emit an event for the new bid. emit BidSubmitted(msg.sender, newBidId, msg.value, block.timestamp); } /** * @notice Inserts a bid node into the ordered linked list of bids. * @dev The list is ordered by bid amount in descending order. * @param estimatedNodeId The estimated node position for optimization. * @param newNodeId The ID of the new bid node. * @param bid The amount of the bid. * @param bidder The address of the bidder. */ function _insertNode( uint32 estimatedNodeId, uint32 newNodeId, uint96 bid, address bidder ) internal { // isNewNode = true when first creating the node; // but we reuse the same storage slot if the node already existed // (though that generally doesn't happen for a brand new bidId). bool isNewNode = (bidder != address(0)); // Data packing structure (256 bits): // bits [160..255]: bid amount (96 bits) // bits [72..103]: next (32 bits) // bits [40..71]: prev (32 bits) // bit 0: isWinning // bit 1: isClaimed // The rest bits [2..39] remain unused. uint256 newNodeData = (uint256(bid) << 160) | (uint256(0) << 72) | // next (uint256(0) << 40) | // prev uint256(1); // isWinning=1, isClaimed=0 if (winningTail == 0) { // Initialize the list with the new node winningTail = newNodeId; bidNodes[newNodeId] = BidNode({bidder: bidder, data: newNodeData}); return; } uint32 currentId = (estimatedNodeId != 0 && estimatedNodeId <= bidCount) ? estimatedNodeId : winningTail; uint96 currentAmount = uint96(bidNodes[currentId].data >> 160); // Traverse the list to find the correct position for the new bid if (bid > currentAmount) { // Traverse backward to find the insertion point bool isHead = false; while ( currentId != 0 && (uint96(bidNodes[currentId].data >> 160) < bid) ) { uint32 prevId = uint32(bidNodes[currentId].data >> 40); if (prevId == 0) { isHead = true; break; } currentId = prevId; } if (isHead) { // Inserting at the head of the list uint32 headId = currentId; // newNode.next = headId newNodeData |= uint256(headId) << 72; // newNode.prev = 0 newNodeData |= uint256(0) << 40; // Update the previous head's prev pointer to point to the new node uint256 headData = bidNodes[headId].data; headData = (headData & ~((uint256(0xFFFFFFFF) << 40))) | (uint256(newNodeId) << 40); // head.prev = newNodeId bidNodes[headId].data = headData; } else { // Inserting between currentId and its next node uint32 nextId = uint32(bidNodes[currentId].data >> 72); // Set new node's prev and next pointers newNodeData |= uint256(nextId) << 72; // newNode.next newNodeData |= uint256(currentId) << 40; // newNode.prev // Update currentId's next pointer to newNodeId uint256 currentNodeData = bidNodes[currentId].data; currentNodeData = (currentNodeData & ~((uint256(0xFFFFFFFF) << 72))) | (uint256(newNodeId) << 72); bidNodes[currentId].data = currentNodeData; // Update next node's prev pointer to newNodeId if nextId != 0 if (nextId != 0) { uint256 nextNodeData = bidNodes[nextId].data; nextNodeData = (nextNodeData & ~((uint256(0xFFFFFFFF) << 40))) | (uint256(newNodeId) << 40); bidNodes[nextId].data = nextNodeData; } else { // If nextId is zero, update the winningTail to the new node winningTail = newNodeId; } } } else { // Traverse forward to find the insertion point bool isWinningTail = false; while ( currentId != 0 && (uint96(bidNodes[currentId].data >> 160) >= bid) ) { if (currentId == winningTail) { isWinningTail = true; break; } uint32 nextId = uint32(bidNodes[currentId].data >> 72); currentId = nextId; } if (isWinningTail) { // Inserting at the tail of the list uint32 oldTail = winningTail; winningTail = newNodeId; // newNode.next = 0 newNodeData |= uint256(0) << 72; // newNode.prev = oldTail newNodeData |= uint256(oldTail) << 40; uint256 oldTailData = bidNodes[oldTail].data; // Update the old tail's next pointer to point to the new node oldTailData = (oldTailData & ~((uint256(0xFFFFFFFF) << 72))) | (uint256(newNodeId) << 72); // If the max number of winners is reached, clear the isWinning flag if (bidCount >= (project.maxSupply - uint32(_owners.length))) { oldTailData &= ~uint256(1); // Clear isWinning flag } bidNodes[oldTail].data = oldTailData; } else { // Inserting between two nodes uint32 prevId = uint32(bidNodes[currentId].data >> 40); // newNode.next = currentId newNodeData |= uint256(currentId) << 72; // newNode.prev = prevId newNodeData |= uint256(prevId) << 40; // Update current node's prev pointer to new node uint256 currentNodeData = bidNodes[currentId].data; currentNodeData = (currentNodeData & ~((uint256(0xFFFFFFFF) << 40))) | (uint256(newNodeId) << 40); bidNodes[currentId].data = currentNodeData; // Update previous node's next pointer to new node if prevId != 0 if (prevId != 0) { uint256 prevNodeData = bidNodes[prevId].data; prevNodeData = (prevNodeData & ~((uint256(0xFFFFFFFF) << 72))) | (uint256(newNodeId) << 72); bidNodes[prevId].data = prevNodeData; } } } // Insert the new node into the mapping if (isNewNode) { bidNodes[newNodeId] = BidNode({bidder: bidder, data: newNodeData}); } else { bidNodes[newNodeId].data = newNodeData; } } /** * @notice Updates an existing bid by increasing the bid amount. * @dev Users can only increase their bids. The bid is re-inserted into the ordered linked list if necessary. * @param bidId The ID of the bid to update. * @param estimatedNodePositionId The estimated node ID for reordering. */ function updateBid( uint32 bidId, uint32 estimatedNodePositionId ) external payable nonReentrant { // Ensure the auction has started. require( block.timestamp >= project.auctionStartTimeStamp, "Not started" ); // Ensure the estimated node position is valid. require(estimatedNodePositionId <= bidCount, "Bad estimate"); // Ensure the auction has not ended. require(block.timestamp <= auctionEndTimeStamp, "Auction ended"); // Ensure the caller is increasing the bid amount. require(msg.value > 0, "No ETH sent"); // Prevent contracts from updating bids. require(msg.sender == tx.origin, "No contracts"); BidNode storage node = bidNodes[bidId]; require(node.bidder == msg.sender, "Not your bid"); // Decode the current data uint256 nodeData = node.data; uint96 currentAmount = uint96(nodeData >> 160); uint96 newAmount = currentAmount + uint96(msg.value); // Compute the cutoff amount and max winners uint32 maxWinners = project.maxSupply - uint32(_owners.length); uint96 cutoffAmount = getCutoffBidAmount(); // Check if the updated bid meets the required conditions if (bidCount >= maxWinners) { require(newAmount > cutoffAmount, "Bid too low"); } else { require(newAmount >= project.minBid, "Bid too low"); } bool wasWinning = (nodeData & uint256(1)) != 0; // Update the bid amount (preserve 'isWinning' + 'isClaimed' bits) // bit[0]: isWinning, bit[1]: isClaimed // We only want to replace the amount bits [160..255]. // So we mask out the old amount, then set the new amount: uint256 flagsMask = nodeData & 0x000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF; // This keeps bits [0..159] intact, which includes isWinning, isClaimed, prev, next // Then we put newAmount in bits [160..255]. node.data = flagsMask | (uint256(newAmount) << 160); // If previously not winning or we updated the tail, re-check tail if (bidId == winningTail || !wasWinning) { _adjustWinningTail(); } // Adjust the position of the node in the linked list if necessary _adjustNodePosition(bidId, newAmount, estimatedNodePositionId); // Extend auction if needed _extendAuctionIfNeeded(); emit BidUpdated(msg.sender, bidId, newAmount, block.timestamp); } /** * @notice Adjusts the position of a bid node after updating its amount. * @dev Detaches the node and re-inserts it into the correct position in the ordered linked list. * @param bidId The ID of the bid node to adjust. * @param newAmount The new bid amount. * @param estimatedNodePositionId The estimated node position for optimization. */ function _adjustNodePosition( uint32 bidId, uint96 newAmount, uint32 estimatedNodePositionId ) internal { _detachNode(bidId); _insertNode(estimatedNodePositionId, bidId, newAmount, address(0)); } /** * @notice Detaches a bid node from the linked list. * @dev Updates the previous and next nodes to bypass the detached node. * @param bidId The ID of the bid node to detach. */ function _detachNode(uint32 bidId) internal { uint256 nodeData = bidNodes[bidId].data; uint32 prevId = uint32(nodeData >> 40); uint32 nextId = uint32(nodeData >> 72); // Update previous node's next pointer if (prevId != 0) { uint256 prevData = bidNodes[prevId].data; bidNodes[prevId].data = (prevData & ~(uint256(0xFFFFFFFF) << 72)) | (uint256(nextId) << 72); } // Update next node's prev pointer if (nextId != 0) { uint256 nextData = bidNodes[nextId].data; bidNodes[nextId].data = (nextData & ~(uint256(0xFFFFFFFF) << 40)) | (uint256(prevId) << 40); } } /** * @notice Adjusts the winning tail of the linked list when necessary. * @dev Updates the 'isWinning' flag of the old winning tail and moves the winning tail to the previous node. */ function _adjustWinningTail() internal { if (winningTail == 0) return; // Clear the `isWinning` flag for the old winningTail uint256 oldTailData = bidNodes[winningTail].data; // bit[0] = isWinning -> set to 0 bidNodes[winningTail].data = oldTailData & ~uint256(1); // Update the winningTail to the previous node winningTail = uint32(bidNodes[winningTail].data >> 40); // Get `prev` } /** * @notice Returns the estimated node ID for a given bid amount. * @dev Navigates the linked list to find the appropriate position for the bid. * @param bid The amount of the bid for which to find the estimated position. * @return The estimated node ID. */ function getEstimatedNodeId(uint96 bid) external view returns (uint32) { uint32 currentId = winningTail; if (currentId == 0) return 0; uint96 currentAmount = uint96(bidNodes[currentId].data >> 160); if (bid > currentAmount) { while ( currentId != 0 && (uint96(bidNodes[currentId].data >> 160) < bid) ) { uint32 prevId = uint32(bidNodes[currentId].data >> 40); if (prevId == 0) { break; } currentId = prevId; } return currentId; } else { return winningTail; } } /** * @notice Returns the cutoff bid amount required to be a winning bid. * @dev Determines the bid amount of the `winningTail` or the minimum bid if the auction is undersubscribed. * @return cutoffAmount The minimum amount required to be a winning bid. */ function getCutoffBidAmount() public view returns (uint96 cutoffAmount) { uint32 maxWinners = project.maxSupply - uint32(_owners.length); if (bidCount >= maxWinners && winningTail != 0) { // If there are enough bids to fill all available tokens, return the `winningTail` amount uint256 tailData = bidNodes[winningTail].data; return uint96(tailData >> 160); } else { // If there are fewer bids than tokens, any bid can win return project.minBid; } } /** * @notice Internal function to extend the auction if a bid is placed near the end. * @dev Extends the auction end time by 'auctionExtension' if within 'auctionExtenderTimeFrame', up to 'maxAuctionExtension'. */ function _extendAuctionIfNeeded() internal { uint256 timeRemaining = auctionEndTimeStamp > block.timestamp ? auctionEndTimeStamp - block.timestamp : 0; if (timeRemaining < project.auctionExtenderTimeFrame) { uint56 totalExtendedTime = auctionEndTimeStamp - (project.auctionStartTimeStamp + project.auctionDuration); if (totalExtendedTime < project.maxAuctionExtension) { uint56 extensionTime = project.auctionExtension; // Adjust extension time if it exceeds maxAuctionExtension if ( totalExtendedTime + extensionTime > project.maxAuctionExtension ) { extensionTime = project.maxAuctionExtension - totalExtendedTime; } auctionEndTimeStamp += extensionTime; emit AuctionExtended(auctionEndTimeStamp); } } } /** * @notice Allows users to claim their NFTs and refunds after the auction ends. * Now it sets `isClaimed` = 1 instead of deleting the bid node. * @param bidIds The array of bid IDs to claim. * @param gmDaoTokenIds The array of gmDAO token IDs for discount eligibility. * @param a The address to receive the NFTs and refunds. */ function claim( uint32[] calldata bidIds, uint256[] calldata gmDaoTokenIds, address a ) external nonReentrant { require(block.timestamp > auctionEndTimeStamp, "Auction not ended"); require(bidIds.length > 0, "No bids"); if (finalClearingPrice == 0) { _finalizeAuction(); } uint256 totalRefund = 0; uint256 gmTokenIndex = 0; // Tracks which gmDAO token to use for discounts for (uint256 i = 0; i < bidIds.length; i++) { uint32 bidId = bidIds[i]; BidNode storage node = bidNodes[bidId]; require(node.bidder == msg.sender, "Not your bid"); uint256 nodeData = node.data; bool isWinning = ((nodeData & uint256(1)) != 0); bool isAlreadyClaimed = ((nodeData & uint256(2)) != 0); // bit[1] = isClaimed require(!isAlreadyClaimed, "Already claimed"); uint256 bidAmount = uint96(nodeData >> 160); uint256 discount = 0; if (isWinning) { // Winning bid: apply discount logic if (gmTokenIndex < gmDaoTokenIds.length) { uint256 gmDaoTokenId = gmDaoTokenIds[gmTokenIndex]; address gmTokenOwner = ERC721Upgradeable( project.gmV3Contract ).ownerOf(gmDaoTokenId); // Check ownership or delegation if ( gmTokenOwner == msg.sender || // Direct ownership IDelegateRegistry(project.delegateRegistry) .checkDelegateForERC721( msg.sender, gmTokenOwner, address(project.gmV3Contract), gmDaoTokenId, "" ) ) { require( !_isDiscountUsed(gmDaoTokenId), "Discount used" ); _setDiscountUsed(gmDaoTokenId); // Mark discount as used discount = (finalClearingPrice * project.gmDiscount) / 10000; gmTokenIndex++; } } uint256 effectivePrice = finalClearingPrice - discount; uint256 refundAmount = bidAmount > effectivePrice ? bidAmount - effectivePrice : 0; // Add unused discount portion back to withdrawable if discount was not used if (discount == 0) { _withdrawable += (finalClearingPrice * project.gmDiscount) / 10000; } // Mint the NFT to address 'a'. _mint(a, _owners.length); totalRefund += refundAmount; numberOfClaimedWinningBids += 1; } else { // Losing bid: full refund totalRefund += bidAmount; } // Set isClaimed = 1 (bit[1]) // preserve the rest of nodeData, just set bit 1: node.data = nodeData | uint256(2); // set bit[1] // Instead of deleting the node, we keep it with isClaimed = true } // Transfer any refunds to the address 'a'. if (totalRefund > 0) { _safeTransferEther(payable(a), totalRefund); } } /** * @notice Finalizes the auction by determining the final clearing price and the number of winning bids. * @dev Calculates the final clearing price based on the bids and marks the auction as finalized. */ function _finalizeAuction() internal { mintedBeforeAuction = uint32(_owners.length); uint32 maxAvailableTokens = uint32( project.maxSupply - mintedBeforeAuction ); if (bidCount >= maxAvailableTokens) { numberOfWinningBids = maxAvailableTokens; finalClearingPrice = uint96(bidNodes[winningTail].data >> 160); } else { numberOfWinningBids = uint32(bidCount); finalClearingPrice = project.minBid; } // Calculate instant withdrawable amount uint256 totalProceeds = numberOfWinningBids * uint256(finalClearingPrice); uint256 instantWithdrawable = (totalProceeds * (10000 - project.gmDiscount)) / 10000; // Reserve the discount portion _withdrawable += instantWithdrawable; // Add to withdrawable funds } /** * @notice Checks if a gmDAO token has been used for a discount. * @param tokenId The gmDAO token ID to check. * @return True if the token has been used, false otherwise. */ function _isDiscountUsed(uint256 tokenId) internal view returns (bool) { uint256 index = tokenId / 256; // Determine which uint256 to use uint256 bit = 1 << (tokenId % 256); // Determine the specific bit within the uint256 return (_gmDaoDiscountFlags[index] & bit) != 0; } /** * @notice Marks a gmDAO token as used for a discount. * @param tokenId The gmDAO token ID to mark. */ function _setDiscountUsed(uint256 tokenId) internal { uint256 index = tokenId / 256; uint256 bit = 1 << (tokenId % 256); _gmDaoDiscountFlags[index] |= bit; } /** * @notice Public function returning an array of booleans indicating whether each gmDAO token’s discount was used. * @param gmDaoTokenIds The array of gmDAO token IDs to check. * @return A boolean array parallel to gmDaoTokenIds where `true` means discount was used. */ function areDiscountsUsed( uint256[] calldata gmDaoTokenIds ) external view returns (bool[] memory) { bool[] memory used = new bool[](gmDaoTokenIds.length); for (uint256 i = 0; i < gmDaoTokenIds.length; i++) { used[i] = _isDiscountUsed(gmDaoTokenIds[i]); } return used; } /** * @notice Public function that returns an array of BidNode data starting from `startId` of length `count`. * @dev If you pass (0, 5), you'll get bidNodes[0..4]. * Watch out for existence: if a node was never created or is out of range, it might just contain default values. * @param startId The starting bid ID * @param count How many nodes to fetch */ function getBidNodes( uint32 startId, uint32 count ) external view returns (BidNode[] memory) { BidNode[] memory result = new BidNode[](count); for (uint32 i = 0; i < count; i++) { uint32 bidId = startId + i; result[i] = bidNodes[bidId]; } return result; } /** * @notice Internal function to safely transfer Ether. * @param to The recipient address. * @param amount The amount of Ether to transfer. */ function _safeTransferEther(address payable to, uint256 amount) internal { (bool sent, ) = to.call{value: amount}(""); require(sent, "Ether transfer failed"); } /** * @notice Returns a list of token IDs owned by the specified address. * @param _owner The address to query. * @return An array of token IDs owned by the address. */ function walletOfOwner( address _owner ) public view returns (uint256[] memory) { uint256 tokenCount = balanceOf(_owner); if (tokenCount == 0) return new uint256[](0); uint256[] memory tokensId = new uint256[](tokenCount); for (uint256 i; i < tokenCount; i++) { tokensId[i] = tokenOfOwnerByIndex(_owner, i); } return tokensId; } /** * @notice Returns the royalty information for a given token ID and sale price. * @dev This function is required by the ERC2981 standard. * @param _salePrice The sale price of the token. * @return receiver The address to receive the royalties. * @return royaltyAmount The amount of royalties owed. */ function royaltyInfo( uint256, uint256 _salePrice ) external view override returns (address receiver, uint256 royaltyAmount) { receiver = project.royaltyAddress; royaltyAmount = (_salePrice * project.royalty) / 10000; } /** * @notice Returns the metadata of the token with the given ID. * @dev It returns a JSON object which conforms to the ERC721 metadata standard. * @param _tokenId The ID of the token to retrieve metadata for. * @return A JSON object that contains the metadata of the given token. */ function tokenURI( uint256 _tokenId ) public view override returns (string memory) { require(_exists(_tokenId), "Token not found"); return string.concat(project.tokenBase, Strings.toString(_tokenId)); } /** * @notice Returns the maximum supply of tokens. * @return The maximum supply of tokens. */ function maxSupply() public view returns (uint32) { return project.maxSupply; } /** * @notice Allows the owner to set the metadata base URL for the project. * @dev Only callable by the owner. * @param _tokenBase String representing the base URL for tokens. */ function setTokenBase(string calldata _tokenBase) public onlyOwner { project.tokenBase = _tokenBase; } /** * @notice Sets the address to receive royalties. * @param _royaltyAddress The new royalty recipient address. */ function setRoyaltyAddress( address payable _royaltyAddress ) public onlyOwner { require(_royaltyAddress != address(0), "Invalid address"); project.royaltyAddress = _royaltyAddress; } /** * @notice Sets the royalty percentage. * @param _royalty The new royalty percentage (out of 10000). */ function setRoyalty(uint96 _royalty) public onlyOwner { require(_royalty <= 10000, "Royalty percentage too high"); project.royalty = _royalty; } /** * @notice Allows the owner to set the Merkle root for the allowlist. * @dev Only callable by the owner. * @param _merkleRoot The new Merkle root. */ function setMerkleRoot(bytes32 _merkleRoot) external onlyOwner { project.merkleRoot = _merkleRoot; } /** * @notice Allows the owner to set the gmDAO token holder discount percentage. * @dev Only callable by the owner and not after the auction has started. * The discount cannot exceed 10000 (100%). * @param _gmDiscount The new discount percentage (in basis points out of 10000). */ function setGmDiscount(uint96 _gmDiscount) external onlyOwner { require(_gmDiscount <= 10000, "Discount percentage too high"); // Disallow after auction start require( block.timestamp < project.auctionStartTimeStamp, "Cannot set discount after auction starts" ); project.gmDiscount = _gmDiscount; } /** * @notice Allows the owner to set the minimum bid amount. * @dev Only callable by the owner before we have enough winning bids. * @param _minBid The new minimum bid amount (in wei). */ function setMinBid(uint96 _minBid) external onlyOwner { // If we already have enough winning bids, disallow change. uint32 maxWinners = project.maxSupply - uint32(_owners.length); require(bidCount < maxWinners, "Enough winning bids exist"); project.minBid = _minBid; } /** * @notice Allows the owner to set the allowlist minting price. * @dev Only callable by the owner before the allowlist minting starts. * @param _allowListPrice The new price for allowlist minting (in wei). */ function setALPrice(uint96 _allowListPrice) external onlyOwner { require( block.timestamp < project.allowListStartTimeStamp, "Allowlist mint already started" ); project.allowListPrice = _allowListPrice; } /** * @notice Allows the owner to set the auction start timestamp. * @dev Only callable by the owner if the auction hasn't started yet. * @param _auctionStartTimeStamp The new auction start timestamp (UNIX time in seconds). */ function setAuctionStart(uint56 _auctionStartTimeStamp) external onlyOwner { require( block.timestamp < project.auctionStartTimeStamp, "Auction already started" ); require( _auctionStartTimeStamp >= project.allowListStartTimeStamp, "Start cannot be before AL" ); project.auctionStartTimeStamp = _auctionStartTimeStamp; // Recalculate the auction end timestamp auctionEndTimeStamp = project.auctionStartTimeStamp + project.auctionDuration; } /** * @notice Allows the owner to increase the auction duration. * @dev Only callable by the owner before the auction starts. Can only increase the auctionDuration. * @param _auctionDuration The new auction duration in seconds. */ function setAuctionDuration(uint32 _auctionDuration) external onlyOwner { require( block.timestamp < project.auctionStartTimeStamp, "Auction already started" ); require( _auctionDuration > project.auctionDuration, "Must increase duration" ); project.auctionDuration = _auctionDuration; // Recalculate the auction end timestamp auctionEndTimeStamp = project.auctionStartTimeStamp + project.auctionDuration; } /** * @notice Allows the owner to set the allowlist minting start timestamp. * @dev Only callable by the owner if the allowlist minting hasn't started yet. Must be before the auction start time. * @param _allowListStartTimeStamp The new allowlist minting start timestamp (UNIX time in seconds). */ function setALStart(uint56 _allowListStartTimeStamp) external onlyOwner { require( block.timestamp < project.allowListStartTimeStamp, "AL mint started" ); require( _allowListStartTimeStamp <= project.auctionStartTimeStamp, "AL after auction" ); project.allowListStartTimeStamp = _allowListStartTimeStamp; } /** * @notice Allows the owner to decrease the maximum supply of tokens. * @dev Only callable by the owner. Can only decrease the maxSupply, and cannot set it lower than the current total supply + unclaimed winning bids. * @param _maxSupply The new maximum supply of tokens. */ function setMaxSupply(uint32 _maxSupply) external onlyOwner { require(_maxSupply < project.maxSupply, "Only decrease"); uint256 totalSupply = _owners.length; // Check the current auction status if (block.timestamp < project.auctionStartTimeStamp) { // Before auction starts require(_maxSupply >= uint32(totalSupply), "maxSupply too low"); } else if ( block.timestamp >= project.auctionStartTimeStamp && block.timestamp <= auctionEndTimeStamp ) { // During the auction revert("Cannot change maxSupply during the auction"); } else { // After auction ends if (finalClearingPrice == 0) { // Auction not finalized, finalize it _finalizeAuction(); } // After finalization, calculate unclaimed winning bids uint32 unclaimedWinningBids = numberOfWinningBids - numberOfClaimedWinningBids; uint32 minimumMaxSupply = uint32(totalSupply) + unclaimedWinningBids; require(_maxSupply >= minimumMaxSupply, "maxSupply too low"); } project.maxSupply = _maxSupply; } /** * @notice Allows the owner to set whether public mint should be open. * @dev Only callable by the owner. * @param _allowPublic Public open or closed. */ function setAllowPublic(bool _allowPublic) external onlyOwner { allowPublic = _allowPublic; } /** * @notice Allows the contract owner to withdraw accumulated Ether. * @dev Can withdraw allowlist funds at any time and auction funds after the auction ends. * Ensures funds cannot be withdrawn more than once. */ function withdraw() external onlyOwner nonReentrant { // Finalize the auction if it's ended but not yet finalized if (block.timestamp > auctionEndTimeStamp && finalClearingPrice == 0) { _finalizeAuction(); } uint256 amountToWithdraw = _withdrawable; require(amountToWithdraw > 0, "No funds"); // Reset withdrawable amount to prevent re-entrancy _withdrawable = 0; // Calculate gmDAO's share (in basis points out of 10000) uint256 gmDaoAmount = (amountToWithdraw * project.gmDaoShare) / 10000; // Calculate artist's share as the remaining amount uint256 artistAmount = amountToWithdraw - gmDaoAmount; // Transfer gmDAO's share to the gmDAO address if (gmDaoAmount > 0) { _safeTransferEther(project.gmDaoAddress, gmDaoAmount); } // Transfer the artist's share to the artist's address if (artistAmount > 0) { _safeTransferEther(project.artistAddress, artistAmount); } } function supportsInterface( bytes4 interfaceId ) public view virtual override(ERC721EnumerableUpgradeable) returns (bool) { return interfaceId == type(IERC2981).interfaceId || // ERC2981 Royalties super.supportsInterface(interfaceId); } // Override _msgSender to resolve conflict between base classes. function _msgSender() internal view virtual override(ContextUpgradeable, ERC721C) returns (address) { return super._msgSender(); } // Override _msgData to resolve conflict between base classes. function _msgData() internal view virtual override(ContextUpgradeable, ERC721C) returns (bytes calldata) { return super._msgData(); } function _contextSuffixLength() internal view virtual override(ContextUpgradeable, ERC721C) returns (uint256) { return 0; } function _requireCallerIsContractOwner() internal view virtual override { require(owner() == _msgSender(), "Ownable: Caller is not the owner"); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/utils/Context.sol"; abstract contract OwnablePermissions is Context { function _requireCallerIsContractOwner() internal view virtual; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface ICreatorToken { event TransferValidatorUpdated(address oldValidator, address newValidator); function getTransferValidator() external view returns (address validator); function setTransferValidator(address validator) external; function getTransferValidationFunction() external view returns (bytes4 functionSignature, bool isViewFunction); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface ICreatorTokenLegacy { event TransferValidatorUpdated(address oldValidator, address newValidator); function getTransferValidator() external view returns (address validator); function setTransferValidator(address validator) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface ITransferValidator { function applyCollectionTransferPolicy(address caller, address from, address to) external view; function validateTransfer(address caller, address from, address to) external view; function validateTransfer(address caller, address from, address to, uint256 tokenId) external view; function validateTransfer(address caller, address from, address to, uint256 tokenId, uint256 amount) external; function beforeAuthorizedTransfer(address operator, address token, uint256 tokenId) external; function afterAuthorizedTransfer(address token, uint256 tokenId) external; function beforeAuthorizedTransfer(address operator, address token) external; function afterAuthorizedTransfer(address token) external; function beforeAuthorizedTransfer(address token, uint256 tokenId) external; function beforeAuthorizedTransferWithAmount(address token, uint256 tokenId, uint256 amount) external; function afterAuthorizedTransferWithAmount(address token, uint256 tokenId) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface ITransferValidatorSetTokenType { function setTokenTypeOfCollection(address collection, uint16 tokenType) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../access/OwnablePermissions.sol"; /** * @title AutomaticValidatorTransferApproval * @author Limit Break, Inc. * @notice Base contract mix-in that provides boilerplate code giving the contract owner the * option to automatically approve a 721-C transfer validator implementation for transfers. */ abstract contract AutomaticValidatorTransferApproval is OwnablePermissions { /// @dev Emitted when the automatic approval flag is modified by the creator. event AutomaticApprovalOfTransferValidatorSet(bool autoApproved); /// @dev If true, the collection's transfer validator is automatically approved to transfer holder's tokens. bool public autoApproveTransfersFromValidator; /** * @notice Sets if the transfer validator is automatically approved as an operator for all token owners. * * @dev Throws when the caller is not the contract owner. * * @param autoApprove If true, the collection's transfer validator will be automatically approved to * transfer holder's tokens. */ function setAutomaticApprovalOfTransfersFromValidator(bool autoApprove) external { _requireCallerIsContractOwner(); autoApproveTransfersFromValidator = autoApprove; emit AutomaticApprovalOfTransferValidatorSet(autoApprove); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../access/OwnablePermissions.sol"; import "../interfaces/ICreatorToken.sol"; import "../interfaces/ICreatorTokenLegacy.sol"; import "../interfaces/ITransferValidator.sol"; import "./TransferValidation.sol"; import "../interfaces/ITransferValidatorSetTokenType.sol"; /** * @title CreatorTokenBase * @author Limit Break, Inc. * @notice CreatorTokenBaseV3 is an abstract contract that provides basic functionality for managing token * transfer policies through an implementation of ICreatorTokenTransferValidator/ICreatorTokenTransferValidatorV2/ICreatorTokenTransferValidatorV3. * This contract is intended to be used as a base for creator-specific token contracts, enabling customizable transfer * restrictions and security policies. * * <h4>Features:</h4> * <ul>Ownable: This contract can have an owner who can set and update the transfer validator.</ul> * <ul>TransferValidation: Implements the basic token transfer validation interface.</ul> * * <h4>Benefits:</h4> * <ul>Provides a flexible and modular way to implement custom token transfer restrictions and security policies.</ul> * <ul>Allows creators to enforce policies such as account and codehash blacklists, whitelists, and graylists.</ul> * <ul>Can be easily integrated into other token contracts as a base contract.</ul> * * <h4>Intended Usage:</h4> * <ul>Use as a base contract for creator token implementations that require advanced transfer restrictions and * security policies.</ul> * <ul>Set and update the ICreatorTokenTransferValidator implementation contract to enforce desired policies for the * creator token.</ul> * * <h4>Compatibility:</h4> * <ul>Backward and Forward Compatible - V1/V2/V3 Creator Token Base will work with V1/V2/V3 Transfer Validators.</ul> */ abstract contract CreatorTokenBase is OwnablePermissions, TransferValidation, ICreatorToken { /// @dev Thrown when setting a transfer validator address that has no deployed code. error CreatorTokenBase__InvalidTransferValidatorContract(); /// @dev The default transfer validator that will be used if no transfer validator has been set by the creator. address public constant DEFAULT_TRANSFER_VALIDATOR = address(0x721C002B0059009a671D00aD1700c9748146cd1B); /// @dev Used to determine if the default transfer validator is applied. /// @dev Set to true when the creator sets a transfer validator address. bool private isValidatorInitialized; /// @dev Address of the transfer validator to apply to transactions. address private transferValidator; constructor() { _emitDefaultTransferValidator(); _registerTokenType(DEFAULT_TRANSFER_VALIDATOR); } /** * @notice Sets the transfer validator for the token contract. * * @dev Throws when provided validator contract is not the zero address and does not have code. * @dev Throws when the caller is not the contract owner. * * @dev <h4>Postconditions:</h4> * 1. The transferValidator address is updated. * 2. The `TransferValidatorUpdated` event is emitted. * * @param transferValidator_ The address of the transfer validator contract. */ function setTransferValidator(address transferValidator_) public { _requireCallerIsContractOwner(); bool isValidTransferValidator = transferValidator_.code.length > 0; if(transferValidator_ != address(0) && !isValidTransferValidator) { revert CreatorTokenBase__InvalidTransferValidatorContract(); } emit TransferValidatorUpdated(address(getTransferValidator()), transferValidator_); isValidatorInitialized = true; transferValidator = transferValidator_; _registerTokenType(transferValidator_); } /** * @notice Returns the transfer validator contract address for this token contract. */ function getTransferValidator() public view override returns (address validator) { validator = transferValidator; if (validator == address(0)) { if (!isValidatorInitialized) { validator = DEFAULT_TRANSFER_VALIDATOR; } } } /** * @dev Pre-validates a token transfer, reverting if the transfer is not allowed by this token's security policy. * Inheriting contracts are responsible for overriding the _beforeTokenTransfer function, or its equivalent * and calling _validateBeforeTransfer so that checks can be properly applied during token transfers. * * @dev Be aware that if the msg.sender is the transfer validator, the transfer is automatically permitted, as the * transfer validator is expected to pre-validate the transfer. * * @dev Throws when the transfer doesn't comply with the collection's transfer policy, if the transferValidator is * set to a non-zero address. * * @param caller The address of the caller. * @param from The address of the sender. * @param to The address of the receiver. * @param tokenId The token id being transferred. */ function _preValidateTransfer( address caller, address from, address to, uint256 tokenId, uint256 /*value*/) internal virtual override { address validator = getTransferValidator(); if (validator != address(0)) { if (msg.sender == validator) { return; } ITransferValidator(validator).validateTransfer(caller, from, to, tokenId); } } /** * @dev Pre-validates a token transfer, reverting if the transfer is not allowed by this token's security policy. * Inheriting contracts are responsible for overriding the _beforeTokenTransfer function, or its equivalent * and calling _validateBeforeTransfer so that checks can be properly applied during token transfers. * * @dev Be aware that if the msg.sender is the transfer validator, the transfer is automatically permitted, as the * transfer validator is expected to pre-validate the transfer. * * @dev Used for ERC20 and ERC1155 token transfers which have an amount value to validate in the transfer validator. * @dev The `tokenId` for ERC20 tokens should be set to `0`. * * @dev Throws when the transfer doesn't comply with the collection's transfer policy, if the transferValidator is * set to a non-zero address. * * @param caller The address of the caller. * @param from The address of the sender. * @param to The address of the receiver. * @param tokenId The token id being transferred. * @param amount The amount of token being transferred. */ function _preValidateTransfer( address caller, address from, address to, uint256 tokenId, uint256 amount, uint256 /*value*/) internal virtual override { address validator = getTransferValidator(); if (validator != address(0)) { if (msg.sender == validator) { return; } ITransferValidator(validator).validateTransfer(caller, from, to, tokenId, amount); } } function _tokenType() internal virtual pure returns(uint16); function _registerTokenType(address validator) internal { if (validator != address(0)) { uint256 validatorCodeSize; assembly { validatorCodeSize := extcodesize(validator) } if(validatorCodeSize > 0) { try ITransferValidatorSetTokenType(validator).setTokenTypeOfCollection(address(this), _tokenType()) { } catch { } } } } /** * @dev Used during contract deployment for constructable and cloneable creator tokens * @dev to emit the `TransferValidatorUpdated` event signaling the validator for the contract * @dev is the default transfer validator. */ function _emitDefaultTransferValidator() internal { emit TransferValidatorUpdated(address(0), DEFAULT_TRANSFER_VALIDATOR); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/utils/Context.sol"; /** * @title TransferValidation * @author Limit Break, Inc. * @notice A mix-in that can be combined with ERC-721 contracts to provide more granular hooks. * Openzeppelin's ERC721 contract only provides hooks for before and after transfer. This allows * developers to validate or customize transfers within the context of a mint, a burn, or a transfer. */ abstract contract TransferValidation is Context { /// @dev Thrown when the from and to address are both the zero address. error ShouldNotMintToBurnAddress(); /*************************************************************************/ /* Transfers Without Amounts */ /*************************************************************************/ /// @dev Inheriting contracts should call this function in the _beforeTokenTransfer function to get more granular hooks. function _validateBeforeTransfer(address from, address to, uint256 tokenId) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _preValidateMint(_msgSender(), to, tokenId, msg.value); } else if(toZeroAddress) { _preValidateBurn(_msgSender(), from, tokenId, msg.value); } else { _preValidateTransfer(_msgSender(), from, to, tokenId, msg.value); } } /// @dev Inheriting contracts should call this function in the _afterTokenTransfer function to get more granular hooks. function _validateAfterTransfer(address from, address to, uint256 tokenId) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _postValidateMint(_msgSender(), to, tokenId, msg.value); } else if(toZeroAddress) { _postValidateBurn(_msgSender(), from, tokenId, msg.value); } else { _postValidateTransfer(_msgSender(), from, to, tokenId, msg.value); } } /// @dev Optional validation hook that fires before a mint function _preValidateMint(address caller, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a mint function _postValidateMint(address caller, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a burn function _preValidateBurn(address caller, address from, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a burn function _postValidateBurn(address caller, address from, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a transfer function _preValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a transfer function _postValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 value) internal virtual {} /*************************************************************************/ /* Transfers With Amounts */ /*************************************************************************/ /// @dev Inheriting contracts should call this function in the _beforeTokenTransfer function to get more granular hooks. function _validateBeforeTransfer(address from, address to, uint256 tokenId, uint256 amount) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _preValidateMint(_msgSender(), to, tokenId, amount, msg.value); } else if(toZeroAddress) { _preValidateBurn(_msgSender(), from, tokenId, amount, msg.value); } else { _preValidateTransfer(_msgSender(), from, to, tokenId, amount, msg.value); } } /// @dev Inheriting contracts should call this function in the _afterTokenTransfer function to get more granular hooks. function _validateAfterTransfer(address from, address to, uint256 tokenId, uint256 amount) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _postValidateMint(_msgSender(), to, tokenId, amount, msg.value); } else if(toZeroAddress) { _postValidateBurn(_msgSender(), from, tokenId, amount, msg.value); } else { _postValidateTransfer(_msgSender(), from, to, tokenId, amount, msg.value); } } /// @dev Optional validation hook that fires before a mint function _preValidateMint(address caller, address to, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a mint function _postValidateMint(address caller, address to, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a burn function _preValidateBurn(address caller, address from, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a burn function _postValidateBurn(address caller, address from, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a transfer function _preValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a transfer function _postValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 amount, uint256 value) internal virtual {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @dev Constant bytes32 value of 0x000...000 bytes32 constant ZERO_BYTES32 = bytes32(0); /// @dev Constant value of 0 uint256 constant ZERO = 0; /// @dev Constant value of 1 uint256 constant ONE = 1; /// @dev Constant value representing an open order in storage uint8 constant ORDER_STATE_OPEN = 0; /// @dev Constant value representing a filled order in storage uint8 constant ORDER_STATE_FILLED = 1; /// @dev Constant value representing a cancelled order in storage uint8 constant ORDER_STATE_CANCELLED = 2; /// @dev Constant value representing the ERC721 token type for signatures and transfer hooks uint256 constant TOKEN_TYPE_ERC721 = 721; /// @dev Constant value representing the ERC1155 token type for signatures and transfer hooks uint256 constant TOKEN_TYPE_ERC1155 = 1155; /// @dev Constant value representing the ERC20 token type for signatures and transfer hooks uint256 constant TOKEN_TYPE_ERC20 = 20; /// @dev Constant value to mask the upper bits of a signature that uses a packed `vs` value to extract `s` bytes32 constant UPPER_BIT_MASK = 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff; /// @dev EIP-712 typehash used for validating signature based stored approvals bytes32 constant UPDATE_APPROVAL_TYPEHASH = keccak256("UpdateApprovalBySignature(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 approvalExpiration,uint256 sigDeadline,uint256 masterNonce)"); /// @dev EIP-712 typehash used for validating a single use permit without additional data bytes32 constant SINGLE_USE_PERMIT_TYPEHASH = keccak256("PermitTransferFrom(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 expiration,uint256 masterNonce)"); /// @dev EIP-712 typehash used for validating a single use permit with additional data string constant SINGLE_USE_PERMIT_TRANSFER_ADVANCED_TYPEHASH_STUB = "PermitTransferFromWithAdditionalData(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 expiration,uint256 masterNonce,"; /// @dev EIP-712 typehash used for validating an order permit that updates storage as it fills string constant PERMIT_ORDER_ADVANCED_TYPEHASH_STUB = "PermitOrderWithAdditionalData(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 salt,address operator,uint256 expiration,uint256 masterNonce,"; /// @dev Pausable flag for stored approval transfers of ERC721 assets uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC721 = 1 << 0; /// @dev Pausable flag for stored approval transfers of ERC1155 assets uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC1155 = 1 << 1; /// @dev Pausable flag for stored approval transfers of ERC20 assets uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC20 = 1 << 2; /// @dev Pausable flag for single use permit transfers of ERC721 assets uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC721 = 1 << 3; /// @dev Pausable flag for single use permit transfers of ERC1155 assets uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC1155 = 1 << 4; /// @dev Pausable flag for single use permit transfers of ERC20 assets uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC20 = 1 << 5; /// @dev Pausable flag for order fill transfers of ERC1155 assets uint256 constant PAUSABLE_ORDER_TRANSFER_FROM_ERC1155 = 1 << 6; /// @dev Pausable flag for order fill transfers of ERC20 assets uint256 constant PAUSABLE_ORDER_TRANSFER_FROM_ERC20 = 1 << 7;
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.20; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ```solidity * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Storage of the initializable contract. * * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions * when using with upgradeable contracts. * * @custom:storage-location erc7201:openzeppelin.storage.Initializable */ struct InitializableStorage { /** * @dev Indicates that the contract has been initialized. */ uint64 _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool _initializing; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00; /** * @dev The contract is already initialized. */ error InvalidInitialization(); /** * @dev The contract is not initializing. */ error NotInitializing(); /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint64 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in * production. * * Emits an {Initialized} event. */ modifier initializer() { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); // Cache values to avoid duplicated sloads bool isTopLevelCall = !$._initializing; uint64 initialized = $._initialized; // Allowed calls: // - initialSetup: the contract is not in the initializing state and no previous version was // initialized // - construction: the contract is initialized at version 1 (no reininitialization) and the // current contract is just being deployed bool initialSetup = initialized == 0 && isTopLevelCall; bool construction = initialized == 1 && address(this).code.length == 0; if (!initialSetup && !construction) { revert InvalidInitialization(); } $._initialized = 1; if (isTopLevelCall) { $._initializing = true; } _; if (isTopLevelCall) { $._initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint64 version) { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing || $._initialized >= version) { revert InvalidInitialization(); } $._initialized = version; $._initializing = true; _; $._initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { _checkInitializing(); _; } /** * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}. */ function _checkInitializing() internal view virtual { if (!_isInitializing()) { revert NotInitializing(); } } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing) { revert InvalidInitialization(); } if ($._initialized != type(uint64).max) { $._initialized = type(uint64).max; emit Initialized(type(uint64).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint64) { return _getInitializableStorage()._initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _getInitializableStorage()._initializing; } /** * @dev Returns a pointer to the storage namespace. */ // solhint-disable-next-line var-name-mixedcase function _getInitializableStorage() private pure returns (InitializableStorage storage $) { assembly { $.slot := INITIALIZABLE_STORAGE } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } 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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/ERC165.sol) pragma solidity ^0.8.20; import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import {Initializable} from "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` */ abstract contract ERC165Upgradeable is Initializable, IERC165 { function __ERC165_init() internal onlyInitializing { } function __ERC165_init_unchained() internal onlyInitializing { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.20; import {IERC721} from "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.20; import {IERC721} from "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.20; /** * @title ERC-721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC-721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be * reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// 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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/cryptography/Hashes.sol) pragma solidity ^0.8.20; /** * @dev Library of standard hash functions. * * _Available since v5.1._ */ library Hashes { /** * @dev Commutative Keccak256 hash of a sorted pair of bytes32. Frequently used when working with merkle proofs. * * NOTE: Equivalent to the `standardNodeHash` in our https://github.com/OpenZeppelin/merkle-tree[JavaScript library]. */ function commutativeKeccak256(bytes32 a, bytes32 b) internal pure returns (bytes32) { return a < b ? _efficientKeccak256(a, b) : _efficientKeccak256(b, a); } /** * @dev Implementation of keccak256(abi.encode(a, b)) that doesn't allocate or expand memory. */ function _efficientKeccak256(bytes32 a, bytes32 b) private pure returns (bytes32 value) { assembly ("memory-safe") { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/cryptography/MerkleProof.sol) // This file was procedurally generated from scripts/generate/templates/MerkleProof.js. pragma solidity ^0.8.20; import {Hashes} from "./Hashes.sol"; /** * @dev These functions deal with verification of Merkle Tree proofs. * * The tree and the proofs can be generated using our * https://github.com/OpenZeppelin/merkle-tree[JavaScript library]. * You will find a quickstart guide in the readme. * * WARNING: You should avoid using leaf values that are 64 bytes long prior to * hashing, or use a hash function other than keccak256 for hashing leaves. * This is because the concatenation of a sorted pair of internal nodes in * the Merkle tree could be reinterpreted as a leaf value. * OpenZeppelin's JavaScript library generates Merkle trees that are safe * against this attack out of the box. * * IMPORTANT: Consider memory side-effects when using custom hashing functions * that access memory in an unsafe way. * * NOTE: This library supports proof verification for merkle trees built using * custom _commutative_ hashing functions (i.e. `H(a, b) == H(b, a)`). Proving * leaf inclusion in trees built using non-commutative hashing functions requires * additional logic that is not supported by this library. */ library MerkleProof { /** *@dev The multiproof provided is not valid. */ error MerkleProofInvalidMultiproof(); /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. * * This version handles proofs in memory with the default hashing function. */ function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leaves & pre-images are assumed to be sorted. * * This version handles proofs in memory with the default hashing function. */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = Hashes.commutativeKeccak256(computedHash, proof[i]); } return computedHash; } /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. * * This version handles proofs in memory with a custom hashing function. */ function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf, function(bytes32, bytes32) view returns (bytes32) hasher ) internal view returns (bool) { return processProof(proof, leaf, hasher) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leaves & pre-images are assumed to be sorted. * * This version handles proofs in memory with a custom hashing function. */ function processProof( bytes32[] memory proof, bytes32 leaf, function(bytes32, bytes32) view returns (bytes32) hasher ) internal view returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = hasher(computedHash, proof[i]); } return computedHash; } /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. * * This version handles proofs in calldata with the default hashing function. */ function verifyCalldata(bytes32[] calldata proof, bytes32 root, bytes32 leaf) internal pure returns (bool) { return processProofCalldata(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leaves & pre-images are assumed to be sorted. * * This version handles proofs in calldata with the default hashing function. */ function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = Hashes.commutativeKeccak256(computedHash, proof[i]); } return computedHash; } /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. * * This version handles proofs in calldata with a custom hashing function. */ function verifyCalldata( bytes32[] calldata proof, bytes32 root, bytes32 leaf, function(bytes32, bytes32) view returns (bytes32) hasher ) internal view returns (bool) { return processProofCalldata(proof, leaf, hasher) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leaves & pre-images are assumed to be sorted. * * This version handles proofs in calldata with a custom hashing function. */ function processProofCalldata( bytes32[] calldata proof, bytes32 leaf, function(bytes32, bytes32) view returns (bytes32) hasher ) internal view returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = hasher(computedHash, proof[i]); } return computedHash; } /** * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a Merkle tree defined by * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}. * * This version handles multiproofs in memory with the default hashing function. * * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details. * * NOTE: Consider the case where `root == proof[0] && leaves.length == 0` as it will return `true`. * The `leaves` must be validated independently. See {processMultiProof}. */ function multiProofVerify( bytes32[] memory proof, bool[] memory proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProof(proof, proofFlags, leaves) == root; } /** * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false * respectively. * * This version handles multiproofs in memory with the default hashing function. * * CAUTION: Not all Merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer). * * NOTE: The _empty set_ (i.e. the case where `proof.length == 1 && leaves.length == 0`) is considered a no-op, * and therefore a valid multiproof (i.e. it returns `proof[0]`). Consider disallowing this case if you're not * validating the leaves elsewhere. */ function processMultiProof( bytes32[] memory proof, bool[] memory proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the Merkle tree. uint256 leavesLen = leaves.length; uint256 proofFlagsLen = proofFlags.length; // Check proof validity. if (leavesLen + proof.length != proofFlagsLen + 1) { revert MerkleProofInvalidMultiproof(); } // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](proofFlagsLen); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < proofFlagsLen; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]) : proof[proofPos++]; hashes[i] = Hashes.commutativeKeccak256(a, b); } if (proofFlagsLen > 0) { if (proofPos != proof.length) { revert MerkleProofInvalidMultiproof(); } unchecked { return hashes[proofFlagsLen - 1]; } } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } /** * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a Merkle tree defined by * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}. * * This version handles multiproofs in memory with a custom hashing function. * * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details. * * NOTE: Consider the case where `root == proof[0] && leaves.length == 0` as it will return `true`. * The `leaves` must be validated independently. See {processMultiProof}. */ function multiProofVerify( bytes32[] memory proof, bool[] memory proofFlags, bytes32 root, bytes32[] memory leaves, function(bytes32, bytes32) view returns (bytes32) hasher ) internal view returns (bool) { return processMultiProof(proof, proofFlags, leaves, hasher) == root; } /** * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false * respectively. * * This version handles multiproofs in memory with a custom hashing function. * * CAUTION: Not all Merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer). * * NOTE: The _empty set_ (i.e. the case where `proof.length == 1 && leaves.length == 0`) is considered a no-op, * and therefore a valid multiproof (i.e. it returns `proof[0]`). Consider disallowing this case if you're not * validating the leaves elsewhere. */ function processMultiProof( bytes32[] memory proof, bool[] memory proofFlags, bytes32[] memory leaves, function(bytes32, bytes32) view returns (bytes32) hasher ) internal view returns (bytes32 merkleRoot) { // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the Merkle tree. uint256 leavesLen = leaves.length; uint256 proofFlagsLen = proofFlags.length; // Check proof validity. if (leavesLen + proof.length != proofFlagsLen + 1) { revert MerkleProofInvalidMultiproof(); } // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](proofFlagsLen); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < proofFlagsLen; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]) : proof[proofPos++]; hashes[i] = hasher(a, b); } if (proofFlagsLen > 0) { if (proofPos != proof.length) { revert MerkleProofInvalidMultiproof(); } unchecked { return hashes[proofFlagsLen - 1]; } } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } /** * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a Merkle tree defined by * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}. * * This version handles multiproofs in calldata with the default hashing function. * * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details. * * NOTE: Consider the case where `root == proof[0] && leaves.length == 0` as it will return `true`. * The `leaves` must be validated independently. See {processMultiProofCalldata}. */ function multiProofVerifyCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProofCalldata(proof, proofFlags, leaves) == root; } /** * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false * respectively. * * This version handles multiproofs in calldata with the default hashing function. * * CAUTION: Not all Merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer). * * NOTE: The _empty set_ (i.e. the case where `proof.length == 1 && leaves.length == 0`) is considered a no-op, * and therefore a valid multiproof (i.e. it returns `proof[0]`). Consider disallowing this case if you're not * validating the leaves elsewhere. */ function processMultiProofCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the Merkle tree. uint256 leavesLen = leaves.length; uint256 proofFlagsLen = proofFlags.length; // Check proof validity. if (leavesLen + proof.length != proofFlagsLen + 1) { revert MerkleProofInvalidMultiproof(); } // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](proofFlagsLen); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < proofFlagsLen; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]) : proof[proofPos++]; hashes[i] = Hashes.commutativeKeccak256(a, b); } if (proofFlagsLen > 0) { if (proofPos != proof.length) { revert MerkleProofInvalidMultiproof(); } unchecked { return hashes[proofFlagsLen - 1]; } } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } /** * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a Merkle tree defined by * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}. * * This version handles multiproofs in calldata with a custom hashing function. * * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details. * * NOTE: Consider the case where `root == proof[0] && leaves.length == 0` as it will return `true`. * The `leaves` must be validated independently. See {processMultiProofCalldata}. */ function multiProofVerifyCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32 root, bytes32[] memory leaves, function(bytes32, bytes32) view returns (bytes32) hasher ) internal view returns (bool) { return processMultiProofCalldata(proof, proofFlags, leaves, hasher) == root; } /** * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false * respectively. * * This version handles multiproofs in calldata with a custom hashing function. * * CAUTION: Not all Merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer). * * NOTE: The _empty set_ (i.e. the case where `proof.length == 1 && leaves.length == 0`) is considered a no-op, * and therefore a valid multiproof (i.e. it returns `proof[0]`). Consider disallowing this case if you're not * validating the leaves elsewhere. */ function processMultiProofCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32[] memory leaves, function(bytes32, bytes32) view returns (bytes32) hasher ) internal view returns (bytes32 merkleRoot) { // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the Merkle tree. uint256 leavesLen = leaves.length; uint256 proofFlagsLen = proofFlags.length; // Check proof validity. if (leavesLen + proof.length != proofFlagsLen + 1) { revert MerkleProofInvalidMultiproof(); } // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](proofFlagsLen); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < proofFlagsLen; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]) : proof[proofPos++]; hashes[i] = hasher(a, b); } if (proofFlagsLen > 0) { if (proofPos != proof.length) { revert MerkleProofInvalidMultiproof(); } unchecked { return hashes[proofFlagsLen - 1]; } } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } }
// 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/math/Math.sol) pragma solidity ^0.8.20; import {Panic} from "../Panic.sol"; import {SafeCast} from "./SafeCast.sol"; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Floor, // Toward negative infinity Ceil, // Toward positive infinity Trunc, // Toward zero Expand // Away from zero } /** * @dev Returns the addition of two unsigned integers, with an success flag (no overflow). */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an success flag (no overflow). */ function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an success flag (no overflow). */ function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a success flag (no division by zero). */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero). */ function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant. * * IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone. * However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute * one branch when needed, making this function more expensive. */ function ternary(bool condition, uint256 a, uint256 b) internal pure returns (uint256) { unchecked { // branchless ternary works because: // b ^ (a ^ b) == a // b ^ 0 == b return b ^ ((a ^ b) * SafeCast.toUint(condition)); } } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return ternary(a > b, a, b); } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return ternary(a < b, a, b); } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds towards infinity instead * of rounding towards zero. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { if (b == 0) { // Guarantee the same behavior as in a regular Solidity division. Panic.panic(Panic.DIVISION_BY_ZERO); } // The following calculation ensures accurate ceiling division without overflow. // Since a is non-zero, (a - 1) / b will not overflow. // The largest possible result occurs when (a - 1) / b is type(uint256).max, // but the largest value we can obtain is type(uint256).max - 1, which happens // when a = type(uint256).max and b = 1. unchecked { return SafeCast.toUint(a > 0) * ((a - 1) / b + 1); } } /** * @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or * denominator == 0. * * Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by * Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2²⁵⁶ and mod 2²⁵⁶ - 1, then use // the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2²⁵⁶ + prod0. uint256 prod0 = x * y; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0. if (denominator <= prod1) { Panic.panic(ternary(denominator == 0, Panic.DIVISION_BY_ZERO, Panic.UNDER_OVERFLOW)); } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. // Always >= 1. See https://cs.stackexchange.com/q/138556/92363. uint256 twos = denominator & (0 - denominator); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2²⁵⁶ / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such // that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv ≡ 1 mod 2⁴. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also // works in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2⁸ inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶ inverse *= 2 - denominator * inverse; // inverse mod 2³² inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴ inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸ inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶ // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2²⁵⁶. Since the preconditions guarantee that the outcome is // less than 2²⁵⁶, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @dev Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0); } /** * @dev Calculate the modular multiplicative inverse of a number in Z/nZ. * * If n is a prime, then Z/nZ is a field. In that case all elements are inversible, except 0. * If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible. * * If the input value is not inversible, 0 is returned. * * NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Fermat's little theorem and get the * inverse using `Math.modExp(a, n - 2, n)`. See {invModPrime}. */ function invMod(uint256 a, uint256 n) internal pure returns (uint256) { unchecked { if (n == 0) return 0; // The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version) // Used to compute integers x and y such that: ax + ny = gcd(a, n). // When the gcd is 1, then the inverse of a modulo n exists and it's x. // ax + ny = 1 // ax = 1 + (-y)n // ax ≡ 1 (mod n) # x is the inverse of a modulo n // If the remainder is 0 the gcd is n right away. uint256 remainder = a % n; uint256 gcd = n; // Therefore the initial coefficients are: // ax + ny = gcd(a, n) = n // 0a + 1n = n int256 x = 0; int256 y = 1; while (remainder != 0) { uint256 quotient = gcd / remainder; (gcd, remainder) = ( // The old remainder is the next gcd to try. remainder, // Compute the next remainder. // Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd // where gcd is at most n (capped to type(uint256).max) gcd - remainder * quotient ); (x, y) = ( // Increment the coefficient of a. y, // Decrement the coefficient of n. // Can overflow, but the result is casted to uint256 so that the // next value of y is "wrapped around" to a value between 0 and n - 1. x - y * int256(quotient) ); } if (gcd != 1) return 0; // No inverse exists. return ternary(x < 0, n - uint256(-x), uint256(x)); // Wrap the result if it's negative. } } /** * @dev Variant of {invMod}. More efficient, but only works if `p` is known to be a prime greater than `2`. * * From https://en.wikipedia.org/wiki/Fermat%27s_little_theorem[Fermat's little theorem], we know that if p is * prime, then `a**(p-1) ≡ 1 mod p`. As a consequence, we have `a * a**(p-2) ≡ 1 mod p`, which means that * `a**(p-2)` is the modular multiplicative inverse of a in Fp. * * NOTE: this function does NOT check that `p` is a prime greater than `2`. */ function invModPrime(uint256 a, uint256 p) internal view returns (uint256) { unchecked { return Math.modExp(a, p - 2, p); } } /** * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m) * * Requirements: * - modulus can't be zero * - underlying staticcall to precompile must succeed * * IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make * sure the chain you're using it on supports the precompiled contract for modular exponentiation * at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, * the underlying function will succeed given the lack of a revert, but the result may be incorrectly * interpreted as 0. */ function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) { (bool success, uint256 result) = tryModExp(b, e, m); if (!success) { Panic.panic(Panic.DIVISION_BY_ZERO); } return result; } /** * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m). * It includes a success flag indicating if the operation succeeded. Operation will be marked as failed if trying * to operate modulo 0 or if the underlying precompile reverted. * * IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain * you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in * https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack * of a revert, but the result may be incorrectly interpreted as 0. */ function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) { if (m == 0) return (false, 0); assembly ("memory-safe") { let ptr := mload(0x40) // | Offset | Content | Content (Hex) | // |-----------|------------|--------------------------------------------------------------------| // | 0x00:0x1f | size of b | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x20:0x3f | size of e | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x40:0x5f | size of m | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x60:0x7f | value of b | 0x<.............................................................b> | // | 0x80:0x9f | value of e | 0x<.............................................................e> | // | 0xa0:0xbf | value of m | 0x<.............................................................m> | mstore(ptr, 0x20) mstore(add(ptr, 0x20), 0x20) mstore(add(ptr, 0x40), 0x20) mstore(add(ptr, 0x60), b) mstore(add(ptr, 0x80), e) mstore(add(ptr, 0xa0), m) // Given the result < m, it's guaranteed to fit in 32 bytes, // so we can use the memory scratch space located at offset 0. success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20) result := mload(0x00) } } /** * @dev Variant of {modExp} that supports inputs of arbitrary length. */ function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) { (bool success, bytes memory result) = tryModExp(b, e, m); if (!success) { Panic.panic(Panic.DIVISION_BY_ZERO); } return result; } /** * @dev Variant of {tryModExp} that supports inputs of arbitrary length. */ function tryModExp( bytes memory b, bytes memory e, bytes memory m ) internal view returns (bool success, bytes memory result) { if (_zeroBytes(m)) return (false, new bytes(0)); uint256 mLen = m.length; // Encode call args in result and move the free memory pointer result = abi.encodePacked(b.length, e.length, mLen, b, e, m); assembly ("memory-safe") { let dataPtr := add(result, 0x20) // Write result on top of args to avoid allocating extra memory. success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen) // Overwrite the length. // result.length > returndatasize() is guaranteed because returndatasize() == m.length mstore(result, mLen) // Set the memory pointer after the returned data. mstore(0x40, add(dataPtr, mLen)) } } /** * @dev Returns whether the provided byte array is zero. */ function _zeroBytes(bytes memory byteArray) private pure returns (bool) { for (uint256 i = 0; i < byteArray.length; ++i) { if (byteArray[i] != 0) { return false; } } return true; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded * towards zero. * * This method is based on Newton's method for computing square roots; the algorithm is restricted to only * using integer operations. */ function sqrt(uint256 a) internal pure returns (uint256) { unchecked { // Take care of easy edge cases when a == 0 or a == 1 if (a <= 1) { return a; } // In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a // sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between // the current value as `ε_n = | x_n - sqrt(a) |`. // // For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root // of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is // bigger than any uint256. // // By noticing that // `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)` // we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar // to the msb function. uint256 aa = a; uint256 xn = 1; if (aa >= (1 << 128)) { aa >>= 128; xn <<= 64; } if (aa >= (1 << 64)) { aa >>= 64; xn <<= 32; } if (aa >= (1 << 32)) { aa >>= 32; xn <<= 16; } if (aa >= (1 << 16)) { aa >>= 16; xn <<= 8; } if (aa >= (1 << 8)) { aa >>= 8; xn <<= 4; } if (aa >= (1 << 4)) { aa >>= 4; xn <<= 2; } if (aa >= (1 << 2)) { xn <<= 1; } // We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1). // // We can refine our estimation by noticing that the middle of that interval minimizes the error. // If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2). // This is going to be our x_0 (and ε_0) xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2) // From here, Newton's method give us: // x_{n+1} = (x_n + a / x_n) / 2 // // One should note that: // x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a // = ((x_n² + a) / (2 * x_n))² - a // = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a // = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²) // = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²) // = (x_n² - a)² / (2 * x_n)² // = ((x_n² - a) / (2 * x_n))² // ≥ 0 // Which proves that for all n ≥ 1, sqrt(a) ≤ x_n // // This gives us the proof of quadratic convergence of the sequence: // ε_{n+1} = | x_{n+1} - sqrt(a) | // = | (x_n + a / x_n) / 2 - sqrt(a) | // = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) | // = | (x_n - sqrt(a))² / (2 * x_n) | // = | ε_n² / (2 * x_n) | // = ε_n² / | (2 * x_n) | // // For the first iteration, we have a special case where x_0 is known: // ε_1 = ε_0² / | (2 * x_0) | // ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2))) // ≤ 2**(2*e-4) / (3 * 2**(e-1)) // ≤ 2**(e-3) / 3 // ≤ 2**(e-3-log2(3)) // ≤ 2**(e-4.5) // // For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n: // ε_{n+1} = ε_n² / | (2 * x_n) | // ≤ (2**(e-k))² / (2 * 2**(e-1)) // ≤ 2**(2*e-2*k) / 2**e // ≤ 2**(e-2*k) xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5) -- special case, see above xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9) -- general case with k = 4.5 xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18) -- general case with k = 9 xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36) -- general case with k = 18 xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72) -- general case with k = 36 xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144) -- general case with k = 72 // Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision // ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either // sqrt(a) or sqrt(a) + 1. return xn - SafeCast.toUint(xn > a / xn); } } /** * @dev Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a); } } /** * @dev Return the log in base 2 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; uint256 exp; unchecked { exp = 128 * SafeCast.toUint(value > (1 << 128) - 1); value >>= exp; result += exp; exp = 64 * SafeCast.toUint(value > (1 << 64) - 1); value >>= exp; result += exp; exp = 32 * SafeCast.toUint(value > (1 << 32) - 1); value >>= exp; result += exp; exp = 16 * SafeCast.toUint(value > (1 << 16) - 1); value >>= exp; result += exp; exp = 8 * SafeCast.toUint(value > (1 << 8) - 1); value >>= exp; result += exp; exp = 4 * SafeCast.toUint(value > (1 << 4) - 1); value >>= exp; result += exp; exp = 2 * SafeCast.toUint(value > (1 << 2) - 1); value >>= exp; result += exp; result += SafeCast.toUint(value > 1); } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value); } } /** * @dev Return the log in base 10 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value); } } /** * @dev Return the log in base 256 of a positive value rounded towards zero. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; uint256 isGt; unchecked { isGt = SafeCast.toUint(value > (1 << 128) - 1); value >>= isGt * 128; result += isGt * 16; isGt = SafeCast.toUint(value > (1 << 64) - 1); value >>= isGt * 64; result += isGt * 8; isGt = SafeCast.toUint(value > (1 << 32) - 1); value >>= isGt * 32; result += isGt * 4; isGt = SafeCast.toUint(value > (1 << 16) - 1); value >>= isGt * 16; result += isGt * 2; result += SafeCast.toUint(value > (1 << 8) - 1); } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value); } } /** * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers. */ function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) { return uint8(rounding) % 2 == 1; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SafeCast.sol) // This file was procedurally generated from scripts/generate/templates/SafeCast.js. pragma solidity ^0.8.20; /** * @dev Wrappers over Solidity's uintXX/intXX/bool casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeCast { /** * @dev Value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value); /** * @dev An int value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedIntToUint(int256 value); /** * @dev Value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedIntDowncast(uint8 bits, int256 value); /** * @dev An uint value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedUintToInt(uint256 value); /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits */ function toUint248(uint256 value) internal pure returns (uint248) { if (value > type(uint248).max) { revert SafeCastOverflowedUintDowncast(248, value); } return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits */ function toUint240(uint256 value) internal pure returns (uint240) { if (value > type(uint240).max) { revert SafeCastOverflowedUintDowncast(240, value); } return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits */ function toUint232(uint256 value) internal pure returns (uint232) { if (value > type(uint232).max) { revert SafeCastOverflowedUintDowncast(232, value); } return uint232(value); } /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits */ function toUint224(uint256 value) internal pure returns (uint224) { if (value > type(uint224).max) { revert SafeCastOverflowedUintDowncast(224, value); } return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits */ function toUint216(uint256 value) internal pure returns (uint216) { if (value > type(uint216).max) { revert SafeCastOverflowedUintDowncast(216, value); } return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits */ function toUint208(uint256 value) internal pure returns (uint208) { if (value > type(uint208).max) { revert SafeCastOverflowedUintDowncast(208, value); } return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits */ function toUint200(uint256 value) internal pure returns (uint200) { if (value > type(uint200).max) { revert SafeCastOverflowedUintDowncast(200, value); } return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits */ function toUint192(uint256 value) internal pure returns (uint192) { if (value > type(uint192).max) { revert SafeCastOverflowedUintDowncast(192, value); } return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits */ function toUint184(uint256 value) internal pure returns (uint184) { if (value > type(uint184).max) { revert SafeCastOverflowedUintDowncast(184, value); } return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits */ function toUint176(uint256 value) internal pure returns (uint176) { if (value > type(uint176).max) { revert SafeCastOverflowedUintDowncast(176, value); } return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits */ function toUint168(uint256 value) internal pure returns (uint168) { if (value > type(uint168).max) { revert SafeCastOverflowedUintDowncast(168, value); } return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits */ function toUint160(uint256 value) internal pure returns (uint160) { if (value > type(uint160).max) { revert SafeCastOverflowedUintDowncast(160, value); } return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits */ function toUint152(uint256 value) internal pure returns (uint152) { if (value > type(uint152).max) { revert SafeCastOverflowedUintDowncast(152, value); } return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits */ function toUint144(uint256 value) internal pure returns (uint144) { if (value > type(uint144).max) { revert SafeCastOverflowedUintDowncast(144, value); } return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits */ function toUint136(uint256 value) internal pure returns (uint136) { if (value > type(uint136).max) { revert SafeCastOverflowedUintDowncast(136, value); } return uint136(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits */ function toUint128(uint256 value) internal pure returns (uint128) { if (value > type(uint128).max) { revert SafeCastOverflowedUintDowncast(128, value); } return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits */ function toUint120(uint256 value) internal pure returns (uint120) { if (value > type(uint120).max) { revert SafeCastOverflowedUintDowncast(120, value); } return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits */ function toUint112(uint256 value) internal pure returns (uint112) { if (value > type(uint112).max) { revert SafeCastOverflowedUintDowncast(112, value); } return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits */ function toUint104(uint256 value) internal pure returns (uint104) { if (value > type(uint104).max) { revert SafeCastOverflowedUintDowncast(104, value); } return uint104(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits */ function toUint96(uint256 value) internal pure returns (uint96) { if (value > type(uint96).max) { revert SafeCastOverflowedUintDowncast(96, value); } return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits */ function toUint88(uint256 value) internal pure returns (uint88) { if (value > type(uint88).max) { revert SafeCastOverflowedUintDowncast(88, value); } return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits */ function toUint80(uint256 value) internal pure returns (uint80) { if (value > type(uint80).max) { revert SafeCastOverflowedUintDowncast(80, value); } return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits */ function toUint72(uint256 value) internal pure returns (uint72) { if (value > type(uint72).max) { revert SafeCastOverflowedUintDowncast(72, value); } return uint72(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits */ function toUint64(uint256 value) internal pure returns (uint64) { if (value > type(uint64).max) { revert SafeCastOverflowedUintDowncast(64, value); } return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits */ function toUint56(uint256 value) internal pure returns (uint56) { if (value > type(uint56).max) { revert SafeCastOverflowedUintDowncast(56, value); } return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits */ function toUint48(uint256 value) internal pure returns (uint48) { if (value > type(uint48).max) { revert SafeCastOverflowedUintDowncast(48, value); } return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits */ function toUint40(uint256 value) internal pure returns (uint40) { if (value > type(uint40).max) { revert SafeCastOverflowedUintDowncast(40, value); } return uint40(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits */ function toUint32(uint256 value) internal pure returns (uint32) { if (value > type(uint32).max) { revert SafeCastOverflowedUintDowncast(32, value); } return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits */ function toUint24(uint256 value) internal pure returns (uint24) { if (value > type(uint24).max) { revert SafeCastOverflowedUintDowncast(24, value); } return uint24(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits */ function toUint16(uint256 value) internal pure returns (uint16) { if (value > type(uint16).max) { revert SafeCastOverflowedUintDowncast(16, value); } return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits */ function toUint8(uint256 value) internal pure returns (uint8) { if (value > type(uint8).max) { revert SafeCastOverflowedUintDowncast(8, value); } return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. */ function toUint256(int256 value) internal pure returns (uint256) { if (value < 0) { revert SafeCastOverflowedIntToUint(value); } return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits */ function toInt248(int256 value) internal pure returns (int248 downcasted) { downcasted = int248(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(248, value); } } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits */ function toInt240(int256 value) internal pure returns (int240 downcasted) { downcasted = int240(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(240, value); } } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits */ function toInt232(int256 value) internal pure returns (int232 downcasted) { downcasted = int232(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(232, value); } } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits */ function toInt224(int256 value) internal pure returns (int224 downcasted) { downcasted = int224(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(224, value); } } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits */ function toInt216(int256 value) internal pure returns (int216 downcasted) { downcasted = int216(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(216, value); } } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits */ function toInt208(int256 value) internal pure returns (int208 downcasted) { downcasted = int208(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(208, value); } } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits */ function toInt200(int256 value) internal pure returns (int200 downcasted) { downcasted = int200(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(200, value); } } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits */ function toInt192(int256 value) internal pure returns (int192 downcasted) { downcasted = int192(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(192, value); } } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits */ function toInt184(int256 value) internal pure returns (int184 downcasted) { downcasted = int184(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(184, value); } } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits */ function toInt176(int256 value) internal pure returns (int176 downcasted) { downcasted = int176(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(176, value); } } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits */ function toInt168(int256 value) internal pure returns (int168 downcasted) { downcasted = int168(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(168, value); } } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits */ function toInt160(int256 value) internal pure returns (int160 downcasted) { downcasted = int160(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(160, value); } } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits */ function toInt152(int256 value) internal pure returns (int152 downcasted) { downcasted = int152(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(152, value); } } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits */ function toInt144(int256 value) internal pure returns (int144 downcasted) { downcasted = int144(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(144, value); } } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits */ function toInt136(int256 value) internal pure returns (int136 downcasted) { downcasted = int136(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(136, value); } } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits */ function toInt128(int256 value) internal pure returns (int128 downcasted) { downcasted = int128(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(128, value); } } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits */ function toInt120(int256 value) internal pure returns (int120 downcasted) { downcasted = int120(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(120, value); } } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits */ function toInt112(int256 value) internal pure returns (int112 downcasted) { downcasted = int112(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(112, value); } } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits */ function toInt104(int256 value) internal pure returns (int104 downcasted) { downcasted = int104(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(104, value); } } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits */ function toInt96(int256 value) internal pure returns (int96 downcasted) { downcasted = int96(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(96, value); } } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits */ function toInt88(int256 value) internal pure returns (int88 downcasted) { downcasted = int88(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(88, value); } } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits */ function toInt80(int256 value) internal pure returns (int80 downcasted) { downcasted = int80(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(80, value); } } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits */ function toInt72(int256 value) internal pure returns (int72 downcasted) { downcasted = int72(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(72, value); } } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits */ function toInt64(int256 value) internal pure returns (int64 downcasted) { downcasted = int64(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(64, value); } } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits */ function toInt56(int256 value) internal pure returns (int56 downcasted) { downcasted = int56(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(56, value); } } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits */ function toInt48(int256 value) internal pure returns (int48 downcasted) { downcasted = int48(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(48, value); } } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits */ function toInt40(int256 value) internal pure returns (int40 downcasted) { downcasted = int40(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(40, value); } } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits */ function toInt32(int256 value) internal pure returns (int32 downcasted) { downcasted = int32(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(32, value); } } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits */ function toInt24(int256 value) internal pure returns (int24 downcasted) { downcasted = int24(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(24, value); } } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits */ function toInt16(int256 value) internal pure returns (int16 downcasted) { downcasted = int16(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(16, value); } } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits */ function toInt8(int256 value) internal pure returns (int8 downcasted) { downcasted = int8(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(8, value); } } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive if (value > uint256(type(int256).max)) { revert SafeCastOverflowedUintToInt(value); } return int256(value); } /** * @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump. */ function toUint(bool b) internal pure returns (uint256 u) { assembly ("memory-safe") { u := iszero(iszero(b)) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SignedMath.sol) pragma solidity ^0.8.20; import {SafeCast} from "./SafeCast.sol"; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @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, int256 a, int256 b) internal pure returns (int256) { unchecked { // branchless ternary works because: // b ^ (a ^ b) == a // b ^ 0 == b return b ^ ((a ^ b) * int256(SafeCast.toUint(condition))); } } /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return ternary(a > b, a, b); } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return ternary(a < b, a, b); } /** * @dev Returns the average of two signed numbers without overflow. * The result is rounded towards zero. */ function average(int256 a, int256 b) internal pure returns (int256) { // Formula from the book "Hacker's Delight" int256 x = (a & b) + ((a ^ b) >> 1); return x + (int256(uint256(x) >> 255) & (a ^ b)); } /** * @dev Returns the absolute unsigned value of a signed value. */ function abs(int256 n) internal pure returns (uint256) { unchecked { // Formula from the "Bit Twiddling Hacks" by Sean Eron Anderson. // Since `n` is a signed integer, the generated bytecode will use the SAR opcode to perform the right shift, // taking advantage of the most significant (or "sign" bit) in two's complement representation. // This opcode adds new most significant bits set to the value of the previous most significant bit. As a result, // the mask will either be `bytes32(0)` (if n is positive) or `~bytes32(0)` (if n is negative). int256 mask = n >> 255; // A `bytes32(0)` mask leaves the input unchanged, while a `~bytes32(0)` mask complements it. return uint256((n + mask) ^ mask); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/Panic.sol) pragma solidity ^0.8.20; /** * @dev Helper library for emitting standardized panic codes. * * ```solidity * contract Example { * using Panic for uint256; * * // Use any of the declared internal constants * function foo() { Panic.GENERIC.panic(); } * * // Alternatively * function foo() { Panic.panic(Panic.GENERIC); } * } * ``` * * Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil]. * * _Available since v5.1._ */ // slither-disable-next-line unused-state library Panic { /// @dev generic / unspecified error uint256 internal constant GENERIC = 0x00; /// @dev used by the assert() builtin uint256 internal constant ASSERT = 0x01; /// @dev arithmetic underflow or overflow uint256 internal constant UNDER_OVERFLOW = 0x11; /// @dev division or modulo by zero uint256 internal constant DIVISION_BY_ZERO = 0x12; /// @dev enum conversion error uint256 internal constant ENUM_CONVERSION_ERROR = 0x21; /// @dev invalid encoding in storage uint256 internal constant STORAGE_ENCODING_ERROR = 0x22; /// @dev empty array pop uint256 internal constant EMPTY_ARRAY_POP = 0x31; /// @dev array out of bounds access uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32; /// @dev resource error (too large allocation or too large array) uint256 internal constant RESOURCE_ERROR = 0x41; /// @dev calling invalid internal function uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51; /// @dev Reverts with a panic code. Recommended to use with /// the internal constants with predefined codes. function panic(uint256 code) internal pure { assembly ("memory-safe") { mstore(0x00, 0x4e487b71) mstore(0x20, code) revert(0x1c, 0x24) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol) pragma solidity ^0.8.20; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at, * consider using {ReentrancyGuardTransient} instead. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant NOT_ENTERED = 1; uint256 private constant ENTERED = 2; uint256 private _status; /** * @dev Unauthorized reentrant call. */ error ReentrancyGuardReentrantCall(); constructor() { _status = NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be NOT_ENTERED if (_status == ENTERED) { revert ReentrancyGuardReentrantCall(); } // Any calls to nonReentrant after this point will fail _status = ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/Strings.sol) pragma solidity ^0.8.20; import {Math} from "./math/Math.sol"; import {SignedMath} from "./math/SignedMath.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant HEX_DIGITS = "0123456789abcdef"; uint8 private constant ADDRESS_LENGTH = 20; /** * @dev The `value` string doesn't fit in the specified `length`. */ error StringsInsufficientHexLength(uint256 value, uint256 length); /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; assembly ("memory-safe") { ptr := add(buffer, add(32, length)) } while (true) { ptr--; assembly ("memory-safe") { mstore8(ptr, byte(mod(value, 10), HEX_DIGITS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `int256` to its ASCII `string` decimal representation. */ function toStringSigned(int256 value) internal pure returns (string memory) { return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value))); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { uint256 localValue = value; bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = HEX_DIGITS[localValue & 0xf]; localValue >>= 4; } if (localValue != 0) { revert StringsInsufficientHexLength(value, length); } return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal * representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH); } /** * @dev Converts an `address` with fixed length of 20 bytes to its checksummed ASCII `string` hexadecimal * representation, according to EIP-55. */ function toChecksumHexString(address addr) internal pure returns (string memory) { bytes memory buffer = bytes(toHexString(addr)); // hash the hex part of buffer (skip length + 2 bytes, length 40) uint256 hashValue; assembly ("memory-safe") { hashValue := shr(96, keccak256(add(buffer, 0x22), 40)) } for (uint256 i = 41; i > 1; --i) { // possible values for buffer[i] are 48 (0) to 57 (9) and 97 (a) to 102 (f) if (hashValue & 0xf > 7 && uint8(buffer[i]) > 96) { // case shift by xoring with 0x20 buffer[i] ^= 0x20; } hashValue >>= 4; } return string(buffer); } /** * @dev Returns true if the two strings are equal. */ function equal(string memory a, string memory b) internal pure returns (bool) { return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b)); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; library Address { function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@limitbreak/creator-token-standards/src/utils/AutomaticValidatorTransferApproval.sol"; import "@limitbreak/creator-token-standards/src/utils/CreatorTokenBase.sol"; import "./ERC721Upgradeable.sol"; import "@limitbreak/creator-token-standards/src/interfaces/ITransferValidatorSetTokenType.sol"; import {TOKEN_TYPE_ERC721} from "@limitbreak/permit-c/src/Constants.sol"; /** * @title ERC721C * @author Limit Break, Inc. * @notice Extends OpenZeppelin's ERC721 implementation with Creator Token functionality, which * allows the contract owner to update the transfer validation logic by managing a security policy in * an external transfer validation security policy registry. See {CreatorTokenTransferValidator}. */ abstract contract ERC721C is ERC721Upgradeable, CreatorTokenBase, AutomaticValidatorTransferApproval { /** * @dev Override _msgData to resolve conflict between base classes. */ function _msgData() internal view virtual override(Context, ContextUpgradeable) returns (bytes calldata) { return super._msgData(); // You can choose either ContextUpgradeable._msgData() or OwnableUpgradeable._msgData(). } /** * @dev Override _msgSender to resolve conflict between base classes. */ function _msgSender() internal view virtual override(Context, ContextUpgradeable) returns (address) { return super._msgSender(); // You can choose ContextUpgradeable._msgSender() or OwnableUpgradeable._msgSender(). } function _contextSuffixLength() internal view virtual override(ContextUpgradeable, Context) returns (uint256) { return 0; } /** * @notice Overrides behavior of isApprovedFor all such that if an operator is not explicitly approved * for all, the contract owner can optionally auto-approve the 721-C transfer validator for transfers. */ function isApprovedForAll( address owner, address operator ) public view virtual override returns (bool isApproved) { isApproved = super.isApprovedForAll(owner, operator); if (!isApproved) { if (autoApproveTransfersFromValidator) { isApproved = operator == address(getTransferValidator()); } } } /** * @notice Indicates whether the contract implements the specified interface. * @dev Overrides supportsInterface in ERC165. * @param interfaceId The interface id * @return true if the contract implements the specified interface, false otherwise */ function supportsInterface( bytes4 interfaceId ) public view virtual override returns (bool) { return interfaceId == type(ICreatorToken).interfaceId || interfaceId == type(ICreatorTokenLegacy).interfaceId || super.supportsInterface(interfaceId); } /** * @notice Returns the function selector for the transfer validator's validation function to be called * @notice for transaction simulation. */ function getTransferValidationFunction() external pure returns (bytes4 functionSignature, bool isViewFunction) { functionSignature = bytes4( keccak256("validateTransfer(address,address,address,uint256)") ); isViewFunction = true; } /// @dev Ties the _beforeTokenTransfer hook to transfer validation logic. function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual override { super._beforeTokenTransfer(from, to, firstTokenId, batchSize); for (uint256 i = 0; i < batchSize; ) { _validateBeforeTransfer(from, to, firstTokenId + i); unchecked { ++i; } } } /// @dev Ties the _afterTokenTransfer hook to transfer validation logic. function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual override { super._afterTokenTransfer(from, to, firstTokenId, batchSize); for (uint256 i = 0; i < batchSize; ) { _validateAfterTransfer(from, to, firstTokenId + i); unchecked { ++i; } } } function _tokenType() internal pure override returns (uint16) { return uint16(TOKEN_TYPE_ERC721); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; /* import "./ERC721Upgradeable.sol"; */ import "./ERC721C.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account but rips out the core of the gas-wasting processing that comes from OpenZeppelin. */ abstract contract ERC721EnumerableUpgradeable is ERC721C, IERC721Enumerable { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface( bytes4 interfaceId ) public view virtual override(ERC721C, IERC165) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || // ERC721 Enumerable super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _owners.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex( uint256 index ) public view virtual override returns (uint256) { require( index < totalSupply(), "ERC721Enumerable: global index out of bounds" ); uint256 tokenId; uint256 count = 0; // Iterate over normal token range for (tokenId = 0; tokenId < _owners.length; tokenId++) { if (_exists(tokenId)) { if (count == index) { return tokenId; } count++; } } revert("ERC721Enumerable: global index out of bounds"); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex( address owner, uint256 index ) public view virtual override returns (uint256 tokenId) { require( index < balanceOf(owner), "ERC721Enumerable: owner index out of bounds" ); uint256 count; for (uint256 i = 0; i < _owners.length; i++) { if (owner == _owners[i]) { if (count == index) return i; // Token ID for normal tokens else count++; } } revert("ERC721Enumerable: owner index out of bounds"); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol"; import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol"; import "./Address.sol"; /** * @dev Implementation of the {IERC721} interface. * This is an upgradeable version of the ERC721 contract. */ abstract contract ERC721Upgradeable is ContextUpgradeable, ERC165Upgradeable, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; string private _name; string private _symbol; // Mapping from token ID to owner address address[] internal _owners; mapping(uint256 => address) private _tokenApprovals; mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. * @param name_ The name of the token. * @param symbol_ The symbol of the token. */ function __ERC721_init( string memory name_, string memory symbol_ ) internal onlyInitializing { __ERC721_init_unchained(name_, symbol_); } function __ERC721_init_unchained( string memory name_, string memory symbol_ ) internal onlyInitializing { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface( bytes4 interfaceId ) public view virtual override(ERC165Upgradeable, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf( address owner ) public view virtual override returns (uint256) { require( owner != address(0), "ERC721: balance query for the zero address" ); uint256 count; for (uint256 i; i < _owners.length; ++i) { if (owner == _owners[i]) ++count; } return count; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf( uint256 tokenId ) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: owner query for nonexistent token"); return _owners[tokenId]; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved( uint256 tokenId ) public view virtual override returns (address) { require( _exists(tokenId), "ERC721: approved query for nonexistent token" ); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll( address operator, bool approved ) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll( address owner, address operator ) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require( _isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved" ); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require( _isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved" ); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require( _checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return tokenId < _owners.length && _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner( address spender, uint256 tokenId ) internal view virtual returns (bool) { require( _exists(tokenId), "ERC721: operator query for nonexistent token" ); address owner = ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId, 1); _owners.push(to); emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId, 1); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require( ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own" ); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId, 1); // Clear approvals from the previous owner _approve(address(0), tokenId); _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId, 1); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received( _msgSender(), from, tokenId, _data ) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert( "ERC721: transfer to non ERC721Receiver implementer" ); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual {} function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.20; import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init(address _ownerOnInit) internal onlyInitializing { __Ownable_init_unchained(_ownerOnInit); } function __Ownable_init_unchained( address _ownerOnInit ) internal onlyInitializing { _transferOwnership(_ownerOnInit); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require( newOwner != address(0), "Ownable: new owner is the zero address" ); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; }
{ "viaIR": true, "optimizer": { "enabled": true, "runs": 50, "details": { "yul": true } }, "evmVersion": "paris", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
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GmStudioRankedAuction.Project","name":"_p","type":"tuple"}],"name":"initProject","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"isApproved","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint24","name":"count","type":"uint24"},{"internalType":"address","name":"a","type":"address"}],"name":"ownerMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint32","name":"estimatedNodePositionId","type":"uint32"}],"name":"placeBid","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint24","name":"count","type":"uint24"},{"internalType":"address","name":"a","type":"address"}],"name":"publicMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"_salePrice","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"royaltyAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint96","name":"_allowListPrice","type":"uint96"}],"name":"setALPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint56","name":"_allowListStartTimeStamp","type":"uint56"}],"name":"setALStart","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_allowPublic","type":"bool"}],"name":"setAllowPublic","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_auctionDuration","type":"uint32"}],"name":"setAuctionDuration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint56","name":"_auctionStartTimeStamp","type":"uint56"}],"name":"setAuctionStart","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"autoApprove","type":"bool"}],"name":"setAutomaticApprovalOfTransfersFromValidator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint96","name":"_gmDiscount","type":"uint96"}],"name":"setGmDiscount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_maxSupply","type":"uint32"}],"name":"setMaxSupply","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_merkleRoot","type":"bytes32"}],"name":"setMerkleRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint96","name":"_minBid","type":"uint96"}],"name":"setMinBid","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint96","name":"_royalty","type":"uint96"}],"name":"setRoyalty","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address 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Contract Creation Code
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