Feature Tip: Add private address tag to any address under My Name Tag !
ERC-721
Overview
Max Total Supply
1,009 MERME
Holders
193
Total Transfers
-
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Minimal Proxy Contract for 0xc5f2fbc70aaa868c4e8d6029e549a4b5965b569e
Contract Name:
ExpandedNFT
Compiler Version
v0.8.19+commit.7dd6d404
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0 /** ExpandedNFTs */ pragma solidity ^0.8.19; import {ERC721Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable.sol"; import {IERC2981Upgradeable, IERC165Upgradeable} from "@openzeppelin/contracts-upgradeable/interfaces/IERC2981Upgradeable.sol"; import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import {AddressUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol"; import {IERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol"; import {IExpandedNFT} from "./IExpandedNFT.sol"; /** This is a smart contract for handling dynamic contract minting. @dev This allows creators to mint a unique serial drop of an expanded NFT within a custom contract @author Zien Repository: https://github.com/joinzien/expanded-nft */ contract ExpandedNFT is ERC721Upgradeable, IExpandedNFT, IERC2981Upgradeable, OwnableUpgradeable { enum WhoCanMint{ NOT_FOR_SALE, ALLOWLIST, ANYONE } enum ExpandedNFTStates{ UNMINTED, RESERVED, MINTED, REDEEM_STARTED, SET_OFFER_TERMS, ACCEPTED_OFFER, PRODUCTION_COMPLETE, REDEEMED } event PriceChanged(uint256 amount); event EditionSold(uint256 price, address owner); event WhoCanMintChanged(WhoCanMint minters); // State change events event RedeemStarted(uint256 tokenId, address owner); event RedeemAborted(uint256 tokenId, address owner); event OfferTermsSet(uint256 tokenId); event OfferAccepted(uint256 tokenId); event OfferRejected(uint256 tokenId); event ProductionComplete(uint256 tokenId); event DeliveryAccepted(uint256 tokenId); /// @title EIP-721 Metadata Update Extension /// @dev This event emits when the metadata of a token is changed. /// So that the third-party platforms such as NFT market could /// timely update the images and related attributes of the NFT. event MetadataUpdate(uint256 _tokenId); /// @dev This event emits when the metadata of a range of tokens is changed. /// So that the third-party platforms such as NFT market could /// timely update the images and related attributes of the NFTs. event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId); struct PerToken { ExpandedNFTStates state; // Who reserved this address reservedBy; // Redemption price in _paymentTokenERC20 uint256 editionFee; // Metadata bool metadataLoaded; string mintedMetadataUrl; string redeemedMetadataUrl; } struct Pricing { // Royalty amount in bps uint256 royaltyBPS; // Split amount to the platforms. the artist in bps uint256 splitBPS; // Price for allow list sales uint256 allowListSalePrice; // Limit for allow list sales uint256 allowListMintLimit; // Price for general sales uint256 generalMintLimit; // Allow list Addresses allowed to mint edition mapping(address => bool) allowListMinters; // The number on the allow list uint256 allowListCount; // Who can currently mint WhoCanMint whoCanMint; // Mint counts for each address mapping(address => uint256) mintCounts; // Free Mints mapping(address => uint256) freeMints; } // Artists wallet address address private _artistWallet; // Per Token data mapping(uint256 => PerToken) private _perTokenMetadata; // Total size of the drop that can be minted uint256 public dropSize; uint256 private _claimCount; // Pricing Pricing private _pricing; uint256 public salePrice; // Reservations mapping(address => uint256) private _resevationCount; mapping(address => uint256[]) private _resevations; uint256 private _loadedMetadata; bool private _randomMint; uint256 private _currentIndex; // ERC20 interface for the payment token IERC20Upgradeable private _paymentTokenERC20; // Global constructor for factory constructor() { _pricing.whoCanMint = WhoCanMint.NOT_FOR_SALE; _disableInitializers(); } /** @param _owner wallet addres for the user that owns and can mint the drop, gets royalty and sales payouts and can update the base url if needed. @param artistWallet wallet address for thr User that created the drop @param _name Name of drop, used in the title as "$NAME NUMBER/TOTAL" @param _symbol Symbol of the new token contract @param _dropSize Number of editions that can be minted in total. @param randomMint Mint in an random order @dev Function to create a new drop. Can only be called by the allowed creator Sets the only allowed minter to the address that creates/owns the drop. This can be re-assigned or updated later */ function initialize( address _owner, address artistWallet, string memory _name, string memory _symbol, uint256 _dropSize, bool randomMint ) public initializer { require(_dropSize > 0, "Drop size must be > 0"); __ERC721_init(_name, _symbol); __Ownable_init(); // Set ownership to original sender of contract call transferOwnership(_owner); _artistWallet = artistWallet; dropSize = _dropSize; // Set edition id start to be 1 not 0 _claimCount = 0; _currentIndex = 1; _randomMint = randomMint; // Set the metadata _loadedMetadata = 0; } /// @dev returns the number of minted tokens within the drop function totalSupply() public view returns (uint256) { return _claimCount; } /// @dev returns the royalty BPS function getRoyaltyBPS() public view returns (uint256) { return _pricing.royaltyBPS; } /// @dev returns the split BPS function getSplitBPS() public view returns (uint256) { return _pricing.splitBPS; } /// @dev returns the allow list sale price function getAllowListPrice() public view returns (uint256) { return _pricing.allowListSalePrice; } /// @dev returns the allow list mint limit function getAllowListMintLimit() public view returns (uint256) { return _pricing.allowListMintLimit; } /// @dev returns the number on the allow list function getAllowListCount() public view returns (uint256) { return _pricing.allowListCount; } /// @dev returns the general mint limit function getGeneralMintLimit() public view returns (uint256) { return _pricing.generalMintLimit; } /// @dev returns mint limit for the address function getMintLimit(address wallet) public view returns (uint256) { uint256 currentMintLimit = _currentMintLimit(); if (_pricing.mintCounts[wallet] >= currentMintLimit) { return 0; } return (currentMintLimit - _pricing.mintCounts[wallet]); } /// @dev returns if the address can mint function canMint(address wallet) public view returns (bool) { uint256 currentMintLimit = getMintLimit(wallet); return (currentMintLimit > 0); } /// @dev returns if the address is on the allow list function allowListed(address wallet) public view returns (bool) { return _pricing.allowListMinters[wallet]; } /** @dev returns the current ETH sales price based on who can currently mint. */ function price() public view returns (uint256){ if (_pricing.whoCanMint == WhoCanMint.ALLOWLIST) { return _pricing.allowListSalePrice; } else if (_pricing.whoCanMint == WhoCanMint.ANYONE) { return salePrice; } return 0; } function redemptionPrice(uint256 tokenId) public view returns (uint256) { require(_exists(tokenId), "No token"); return _perTokenMetadata[tokenId].editionFee; } /** @dev returns the current state of the provided token */ function redeemedState(uint256 tokenId) public view returns (uint256) { require(tokenId > 0, "tokenID > 0"); require(tokenId <= dropSize, "tokenID <= drop size"); return uint256(_perTokenMetadata[tokenId].state); } /** Simple eth-based sales function More complex sales functions can be implemented through IExpandedNFT interface */ /** @dev This allows the user to purchase an edition at the given price in the contract. */ function purchase() external payable returns (uint256) { address[] memory toMint = new address[](1); toMint[0] = msg.sender; return _mintEditionsBody(toMint); } /** @param to address to send the newly minted edition to @dev This mints one edition to the given address by an allowed minter on the edition instance. */ function mintEdition(address to) external payable override returns (uint256) { address[] memory toMint = new address[](1); toMint[0] = to; return _mintEditionsBody(toMint); } /** @param recipients list of addresses to send the newly minted editions to @dev This mints multiple editions to the given list of addresses. */ function mintEditions(address[] memory recipients) external payable override returns (uint256) { return _mintEditionsBody(recipients); } /** @param to address to send the newly minted edition to @param count how many editions to mint @dev This mints one edition to the given address by an allowed minter on the edition instance. */ function mintMultipleEditions(address to, uint256 count) external payable returns (uint256) { address[] memory toMint = new address[](count); for (uint256 r = 0; r < count; r++) { toMint[r] = to; } return _mintEditionsBody(toMint); } /** @param numberToBeMinted Hopw many IDs trying to be minted @dev This mints multiple editions to the given list of addresses. */ function _paymentAmountCorrect(uint256 numberToBeMinted) internal returns (bool) { uint256 freeMintCount = _pricing.freeMints[msg.sender]; if (numberToBeMinted <= freeMintCount) { if (msg.value > 0) { return (false); } return (true); } uint256 remainingToMint = numberToBeMinted - freeMintCount; if (msg.value == (price() * remainingToMint)) { return (true); } return (false); } /** @dev This mints multiple editions to the given list of addresses. */ function _getNextReservation() internal returns (uint256) { uint256 index = 0; while (_resevations[msg.sender][index] == 0) { index++; } uint256 currentToken = _resevations[msg.sender][index]; _resevations[msg.sender][index] = 0; _resevationCount[msg.sender]--; _perTokenMetadata[currentToken].reservedBy = address(0); return currentToken; } /** @dev This mints multiple editions to the given list of addresses. */ function _selectAvailableId() internal returns (uint256) { if (_randomMint) { uint256 random = uint(keccak256(abi.encodePacked(block.timestamp,msg.sender,block.prevrandao,gasleft()))) % dropSize; uint256 randomIndex = 1 + random; while (_perTokenMetadata[randomIndex].state != ExpandedNFTStates.UNMINTED) { randomIndex++; if (randomIndex > dropSize) { randomIndex = 1; } } return randomIndex; } uint256 index = _currentIndex; while (_perTokenMetadata[index].state != ExpandedNFTStates.UNMINTED) { index++; } _currentIndex = index; return index; } /** @param recipients list of addresses to send the newly minted editions to @dev This mints multiple editions to the given list of addresses. */ function _mintEditionsBody(address[] memory recipients) internal returns (uint256) { require(_loadedMetadata >= dropSize, "Not all metadata loaded"); require(_isAllowedToMint(), "Needs to be an allowed minter"); require(recipients.length <= numberCanMint(), "Exceeded supply"); require((_pricing.mintCounts[msg.sender] + recipients.length) <= _currentMintLimit(), "Exceeded mint limit"); require(_paymentAmountCorrect(recipients.length), "Wrong price"); uint256 currentToken; for (uint256 i = 0; i < recipients.length; i++) { if (_resevationCount[msg.sender] > 0) { currentToken = _getNextReservation(); } else { currentToken = _selectAvailableId(); } _mint(recipients[i], currentToken); uint256 freeMintCount = _pricing.freeMints[msg.sender]; if (freeMintCount > 0) { _pricing.freeMints[msg.sender] = freeMintCount - 1; } _perTokenMetadata[currentToken].state = ExpandedNFTStates.MINTED; _pricing.mintCounts[msg.sender]++; _claimCount++; emit EditionSold(price(), msg.sender); emit MetadataUpdate(currentToken); } return currentToken; } /** @param _royaltyBPS BPS of the royalty set on the contract. Can be 0 for no royalty. @param _splitBPS BPS of the royalty set on the contract. Can be 0 for no royalty. @param _allowListSalePrice Sale price for allow listed wallets @param _generalSalePrice SalePrice for the general public @param _allowListMintLimit Mint limit for allow listed wallets @param _generalMintLimit Mint limit for the general public @dev Set various pricing related values */ function setPricing ( uint256 _royaltyBPS, uint256 _splitBPS, uint256 _allowListSalePrice, uint256 _generalSalePrice, uint256 _allowListMintLimit, uint256 _generalMintLimit ) external onlyOwner { _pricing.royaltyBPS = _royaltyBPS; _pricing.splitBPS = _splitBPS; _pricing.allowListSalePrice = _allowListSalePrice; salePrice = _generalSalePrice; _pricing.allowListMintLimit = _allowListMintLimit; _pricing.generalMintLimit = _generalMintLimit; emit PriceChanged(salePrice); } /** @param wallets A list of wallets @param tokenIDs A list of tokenId to reserve @dev Reserve an edition for a wallet */ function reserve (address[] calldata wallets, uint256[] calldata tokenIDs) external onlyOwner { require(wallets.length == tokenIDs.length, "Lists length must match"); for (uint256 i = 0; i < wallets.length; i++) { require(_perTokenMetadata[tokenIDs[i]].state == ExpandedNFTStates.UNMINTED, "Needs to be unminted"); _perTokenMetadata[tokenIDs[i]].reservedBy = wallets[i]; _perTokenMetadata[tokenIDs[i]].state = ExpandedNFTStates.RESERVED; _resevationCount[wallets[i]]++; _resevations[wallets[i]].push(tokenIDs[i]); } } /** @param tokenIDs A list of tokenId to unreserve @dev Unreserve an edition for a wallet */ function unreserve (uint256[] calldata tokenIDs) external onlyOwner { for (uint256 i = 0; i < tokenIDs.length; i++) { require(_perTokenMetadata[tokenIDs[i]].state == ExpandedNFTStates.RESERVED, "Not reserved"); address wallet = _perTokenMetadata[tokenIDs[i]].reservedBy; uint256 index = 0; while (_resevations[wallet][index] != tokenIDs[i]) { index++; } _resevations[wallet][index] = 0; _resevationCount[_perTokenMetadata[tokenIDs[i]].reservedBy]--; _perTokenMetadata[tokenIDs[i]].reservedBy = address(0); _perTokenMetadata[tokenIDs[i]].state = ExpandedNFTStates.UNMINTED; } } /** @param tokenID the tokenId to check @dev Unreserve an edition for a wallet */ function isReserved (uint256 tokenID) external view returns (bool) { return _perTokenMetadata[tokenID].reservedBy != address(0); } /** @param tokenID the tokenId to check @dev who reserved the provided ID */ function whoReserved (uint256 tokenID) external view returns (address) { return _perTokenMetadata[tokenID].reservedBy; } /** @param wallet The wallet being checked @dev returns the number of reservations for this wallet */ function getReservationsCount(address wallet) public view returns (uint256) { return _resevationCount[wallet]; } /** @param wallet The wallet being checked @dev returns the IDs reserved by the wallet */ function getReservationsList(address wallet) public view returns (uint256[] memory) { return _resevations[wallet]; } /** @param wallet The address of the wallet @param freeMintLimit How many free mints should the wallet get @dev Set the number of freemints for a wallet */ function setFreeMints (address wallet, uint256 freeMintLimit) external onlyOwner { _pricing.freeMints[wallet] = freeMintLimit; } /** @param wallet The address of the wallet @dev Check the number of fre mints a wallet has */ function numberOfFreeMints (address wallet) external view returns (uint256) { return _pricing.freeMints[wallet]; } /** @dev returns the current limit on edition that can be minted by one wallet */ function _currentMintLimit() internal view returns (uint256){ if (_pricing.whoCanMint == WhoCanMint.ALLOWLIST) { return _pricing.allowListMintLimit; } else if (_pricing.whoCanMint == WhoCanMint.ANYONE) { return _pricing.generalMintLimit; } return 0; } /** @param _salePrice The amount of ETH is needed to start the sale. @dev This sets a simple ETH sales price Setting a sales price allows users to mint the drop until it sells out. For more granular sales, use an external sales contract. */ function setSalePrice(uint256 _salePrice) external onlyOwner { salePrice = _salePrice; _pricing.whoCanMint = WhoCanMint.ANYONE; emit WhoCanMintChanged(_pricing.whoCanMint); emit PriceChanged(_salePrice); } /** @param _salePrice The amount of ETH is needed to start the sale. @dev This sets the allow list ETH sales price Setting a sales price allows users to mint the drop until it sells out. For more granular sales, use an external sales contract. */ function setAllowListSalePrice(uint256 _salePrice) external onlyOwner { _pricing.allowListSalePrice = _salePrice; _pricing.whoCanMint = WhoCanMint.ALLOWLIST; emit WhoCanMintChanged(_pricing.whoCanMint); emit PriceChanged(_salePrice); } /** @param allowListSalePrice if sale price is 0 sale is stopped, otherwise that amount of ETH is needed to start the sale. @param generalSalePrice if sale price is 0 sale is stopped, otherwise that amount of ETH is needed to start the sale. @dev This sets the members ETH sales price Setting a sales price allows users to mint the drop until it sells out. For more granular sales, use an external sales contract. */ function setSalePrices(uint256 allowListSalePrice, uint256 generalSalePrice) external onlyOwner { _pricing.allowListSalePrice = allowListSalePrice; salePrice = generalSalePrice; emit PriceChanged(generalSalePrice); } /** @dev This withdraws ETH from the contract to the contract owner. */ function withdraw() external onlyOwner { uint256 currentBalance = address(this).balance; if (currentBalance > 0) { if (_artistWallet != address(0x0)) { uint256 platformFee = (currentBalance * _pricing.splitBPS) / 10000; uint256 artistFee = currentBalance - platformFee; AddressUpgradeable.sendValue(payable(owner()), platformFee); AddressUpgradeable.sendValue(payable(_artistWallet), artistFee); } else { AddressUpgradeable.sendValue(payable(owner()), currentBalance); } } if (address(_paymentTokenERC20) != address(0x0)) { uint256 currentBalanceERC20 = _paymentTokenERC20.balanceOf(address(this)); if (currentBalanceERC20 > 0) { _paymentTokenERC20.transfer(owner(), currentBalanceERC20); } } } /** @dev This helper function checks if the msg.sender is allowed to mint the given edition id. */ function _isAllowedToMint() internal view returns (bool) { if (_pricing.whoCanMint == WhoCanMint.ANYONE) { return true; } if (_pricing.whoCanMint == WhoCanMint.ALLOWLIST) { if (_pricing.allowListMinters[msg.sender]) { return true; } } return false; } /** Simple override for owner interface. */ function owner() public view override(OwnableUpgradeable, IExpandedNFT) returns (address) { return super.owner(); } /** return the artists wallet address */ function getArtistWallet() public view returns (address) { return _artistWallet; } /** set the artists wallet address */ function setArtistWallet(address wallet) public onlyOwner { _artistWallet = wallet; } /** return the payment tokens address */ function getPaymentToken() public view returns (address) { return address(_paymentTokenERC20); } /** set a new payment token address */ function setPaymentToken(address paymentToken) public onlyOwner { if (address(_paymentTokenERC20) != address(0x0)) { require(_paymentTokenERC20.balanceOf(address(this)) == 0, "token must have 0 balance"); } _paymentTokenERC20 = IERC20Upgradeable(paymentToken); } /** @dev Sets the types of users who is allowed to mint. */ function getAllowedMinter() public view returns (WhoCanMint){ return _pricing.whoCanMint; } /** @param minters WhoCanMint enum of minter types @dev Sets the types of users who is allowed to mint. */ function setAllowedMinter(WhoCanMint minters) public onlyOwner { _pricing.whoCanMint = minters; emit WhoCanMintChanged(minters); } /** @param minter address to set approved minting status for @param allowed boolean if that address is allowed to mint @dev Sets the approved minting status of the given address. This requires that msg.sender is the owner of the given edition id. If the ZeroAddress (address(0x0)) is set as a minter, anyone will be allowed to mint. This setup is similar to setApprovalForAll in the ERC721 spec. */ function setAllowListMinters(uint256 count, address[] calldata minter, bool[] calldata allowed) public onlyOwner { for (uint256 i = 0; i < count; i++) { if (_pricing.allowListMinters[minter[i]] != allowed[i]) { if (allowed[i] == true) { _pricing.allowListCount++; } else { _pricing.allowListCount--; } } _pricing.allowListMinters[minter[i]] = allowed[i]; } } function metadataloaded() public view returns (bool){ return (_loadedMetadata >= dropSize); } /** @param startIndex The first ID index to write the data @param count How many rows of data to load @param _mintedMetadataUrl The URL to the metadata for this Edtion @dev Function to create a new drop. Can only be called by the allowed creator Sets the only allowed minter to the address that creates/owns the drop. This can be re-assigned or updated later */ function loadMetadataChunk( uint256 startIndex, uint256 count, string[] memory _mintedMetadataUrl ) public onlyOwner { require(startIndex > 0, "StartIndex > 0"); require(startIndex + count <= dropSize + 1, "Data large than drop size"); require(_mintedMetadataUrl.length == count, "Data size mismatch"); for (uint i = 0; i < count; i++) { uint index = startIndex + i; _perTokenMetadata[index].mintedMetadataUrl =_mintedMetadataUrl[i]; if (_perTokenMetadata[index].metadataLoaded != true) { _perTokenMetadata[index].metadataLoaded = true; _loadedMetadata++; } emit MetadataUpdate(index); } } /** @param tokenID The index to write the data @param _redeemedMetadataUrl The URL to the metadata for this Edtion @dev Function to create a new drop. Can only be called by the allowed creator Sets the only allowed minter to the address that creates/owns the drop. This can be re-assigned or updated later */ function loadRedeemedMetadata( uint256 tokenID, string memory _redeemedMetadataUrl ) public onlyOwner { require(tokenID > 0, "tokenID > 0"); require(tokenID <= dropSize, "tokenID <= drop size"); _perTokenMetadata[tokenID].redeemedMetadataUrl = _redeemedMetadataUrl; emit MetadataUpdate(tokenID); } /// Returns the number of editions allowed to mint function numberCanMint() public view override returns (uint256) { return dropSize - _claimCount; } /** @param tokenId Token ID to burn User burn function for token id */ function burn(uint256 tokenId) public { require(_isApprovedOrOwner(_msgSender(), tokenId), "Not approved"); _burn(tokenId); } function redeem(uint256 tokenId) public { require(_exists(tokenId), "No token"); require(_isApprovedOrOwner(_msgSender(), tokenId), "Not approved"); require((_perTokenMetadata[tokenId].state == ExpandedNFTStates.MINTED), "You currently can not redeem"); _perTokenMetadata[tokenId].state = ExpandedNFTStates.REDEEM_STARTED; emit RedeemStarted(tokenId, _msgSender()); } function abortRedemption(uint256 tokenId) public { require(_exists(tokenId), "No token"); require(_isApprovedOrOwner(_msgSender(), tokenId), "Not approved"); require((_perTokenMetadata[tokenId].state == ExpandedNFTStates.REDEEM_STARTED), "You currently can not redeem"); _perTokenMetadata[tokenId].state = ExpandedNFTStates.MINTED; emit RedeemAborted(tokenId, _msgSender()); } function setOfferTerms(uint256 tokenId, uint256 fee) public onlyOwner { require(_exists(tokenId), "No token"); require((_perTokenMetadata[tokenId].state== ExpandedNFTStates.REDEEM_STARTED), "Wrong state"); _perTokenMetadata[tokenId].state = ExpandedNFTStates.SET_OFFER_TERMS; _perTokenMetadata[tokenId].editionFee = fee; emit OfferTermsSet(tokenId); } function rejectOfferTerms(uint256 tokenId) public { require(_exists(tokenId), "No token"); require(_isApprovedOrOwner(_msgSender(), tokenId), "Not approved"); require((_perTokenMetadata[tokenId].state == ExpandedNFTStates.SET_OFFER_TERMS), "You currently can not redeem"); _perTokenMetadata[tokenId].state = ExpandedNFTStates.MINTED; emit OfferRejected(tokenId); } function acceptOfferTerms(uint256 tokenId, uint256 paymentAmount) external { require(_exists(tokenId), "No token"); require(_isApprovedOrOwner(_msgSender(), tokenId), "Not approved"); require((_perTokenMetadata[tokenId].state == ExpandedNFTStates.SET_OFFER_TERMS), "You currently can not redeem"); require(paymentAmount >= _perTokenMetadata[tokenId].editionFee, "Wrong price"); require(_paymentTokenERC20.allowance(_msgSender(), address(this)) >= _perTokenMetadata[tokenId].editionFee, "Insufficient allowance"); bool success = _paymentTokenERC20.transferFrom(_msgSender(), address(this), _perTokenMetadata[tokenId].editionFee); require(success, "Could not transfer token"); _perTokenMetadata[tokenId].state = ExpandedNFTStates.ACCEPTED_OFFER; emit OfferAccepted(tokenId); } function productionComplete( uint256 tokenId, string memory _redeemedMetadataUrl ) public onlyOwner { require(_exists(tokenId), "No token"); require((_perTokenMetadata[tokenId].state == ExpandedNFTStates.ACCEPTED_OFFER), "You currently can not redeem"); _perTokenMetadata[tokenId].redeemedMetadataUrl = _redeemedMetadataUrl; _perTokenMetadata[tokenId].state = ExpandedNFTStates.PRODUCTION_COMPLETE; emit ProductionComplete(tokenId); } function acceptDelivery(uint256 tokenId) public { require(_exists(tokenId), "No token"); require(_isApprovedOrOwner(_msgSender(), tokenId), "Not approved"); require((_perTokenMetadata[tokenId].state == ExpandedNFTStates.PRODUCTION_COMPLETE), "You currently can not redeem"); _perTokenMetadata[tokenId].state = ExpandedNFTStates.REDEEMED; emit OfferRejected(tokenId); emit MetadataUpdate(tokenId); } /** @dev Get royalty information for token @param _salePrice Sale price for the token */ function royaltyInfo(uint256, uint256 _salePrice) external view override returns (address receiver, uint256 royaltyAmount) { if (owner() == address(0x0)) { return (owner(), 0); } return (owner(), (_salePrice * _pricing.royaltyBPS) / 10_000); } /** @dev Get URI for given token id @param tokenId token id to get uri for @return base64-encoded json metadata object */ function tokenURI(uint256 tokenId) public view override returns (string memory) { require(_exists(tokenId), "No token"); if (_perTokenMetadata[tokenId].state == ExpandedNFTStates.REDEEMED) { return (_perTokenMetadata[tokenId].redeemedMetadataUrl); } return (_perTokenMetadata[tokenId].mintedMetadataUrl); } function supportsInterface(bytes4 interfaceId) public view override(ERC721Upgradeable, IERC165Upgradeable) returns (bool) { return type(IERC2981Upgradeable).interfaceId == interfaceId || ERC721Upgradeable.supportsInterface(interfaceId); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import "../proxy/utils/Initializable.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() internal onlyInitializing { __Ownable_init_unchained(); } function __Ownable_init_unchained() internal onlyInitializing { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions 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; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol) pragma solidity ^0.8.0; import "../utils/introspection/IERC165Upgradeable.sol"; /** * @dev Interface for the NFT Royalty Standard. * * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal * support for royalty payments across all NFT marketplaces and ecosystem participants. * * _Available since v4.5._ */ interface IERC2981Upgradeable is IERC165Upgradeable { /** * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of * exchange. The royalty amount is denominated and should be paid in that same unit of exchange. */ function royaltyInfo(uint256 tokenId, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.1) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/AddressUpgradeable.sol"; /** * @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] * ``` * 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 Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 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 functions marked with `initializer` can be nested in the context of a * constructor. * * Emits an {Initialized} event. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _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 255 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _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() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @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 { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint8) { return _initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _initializing; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20Upgradeable { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.2) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721Upgradeable.sol"; import "./IERC721ReceiverUpgradeable.sol"; import "./extensions/IERC721MetadataUpgradeable.sol"; import "../../utils/AddressUpgradeable.sol"; import "../../utils/ContextUpgradeable.sol"; import "../../utils/StringsUpgradeable.sol"; import "../../utils/introspection/ERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable { using AddressUpgradeable for address; using StringsUpgradeable for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ 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, IERC165Upgradeable) returns (bool) { return interfaceId == type(IERC721Upgradeable).interfaceId || interfaceId == type(IERC721MetadataUpgradeable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: address zero is not a valid owner"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _ownerOf(tokenId); require(owner != address(0), "ERC721: invalid token ID"); return owner; } /** * @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 {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { _requireMinted(tokenId); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721Upgradeable.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not token owner or approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { _requireMinted(tokenId); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_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: caller is not token owner or 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: caller is not token owner or 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 the owner of the `tokenId`. Does NOT revert if token doesn't exist */ function _ownerOf(uint256 tokenId) internal view virtual returns (address) { return _owners[tokenId]; } /** * @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 _ownerOf(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) { address owner = ERC721Upgradeable.ownerOf(tokenId); return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == 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); // Check that tokenId was not minted by `_beforeTokenTransfer` hook require(!_exists(tokenId), "ERC721: token already minted"); unchecked { // Will not overflow unless all 2**256 token ids are minted to the same owner. // Given that tokens are minted one by one, it is impossible in practice that // this ever happens. Might change if we allow batch minting. // The ERC fails to describe this case. _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId, 1); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * This is an internal function that does not check if the sender is authorized to operate on the token. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721Upgradeable.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId, 1); // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook owner = ERC721Upgradeable.ownerOf(tokenId); // Clear approvals delete _tokenApprovals[tokenId]; unchecked { // Cannot overflow, as that would require more tokens to be burned/transferred // out than the owner initially received through minting and transferring in. _balances[owner] -= 1; } delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), 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 from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId, 1); // Check that tokenId was not transferred by `_beforeTokenTransfer` hook require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); // Clear approvals from the previous owner delete _tokenApprovals[tokenId]; unchecked { // `_balances[from]` cannot overflow for the same reason as described in `_burn`: // `from`'s balance is the number of token held, which is at least one before the current // transfer. // `_balances[to]` could overflow in the conditions described in `_mint`. That would require // all 2**256 token ids to be minted, which in practice is impossible. _balances[from] -= 1; _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId, 1); } /** * @dev Approve `to` to operate on `tokenId` * * Emits an {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits an {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Reverts if the `tokenId` has not been minted yet. */ function _requireMinted(uint256 tokenId) internal view virtual { require(_exists(tokenId), "ERC721: invalid token ID"); } /** * @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 IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) { return retval == IERC721ReceiverUpgradeable.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { /// @solidity memory-safe-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`. * - When `from` is zero, the tokens will be minted for `to`. * - When `to` is zero, ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * - `batchSize` is non-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 {} /** * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`. * - When `from` is zero, the tokens were minted for `to`. * - When `to` is zero, ``from``'s tokens were burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual {} /** * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override. * * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such * that `ownerOf(tokenId)` is `a`. */ // solhint-disable-next-line func-name-mixedcase function __unsafe_increaseBalance(address account, uint256 amount) internal { _balances[account] += amount; } /** * @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[44] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721ReceiverUpgradeable { /** * @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 v4.8.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165Upgradeable.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721Upgradeable is IERC165Upgradeable { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 * 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 caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721Upgradeable.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721MetadataUpgradeable is IERC721Upgradeable { /** * @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 v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; import "../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; } /** * @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[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/MathUpgradeable.sol"; /** * @dev String operations. */ library StringsUpgradeable { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = MathUpgradeable.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, MathUpgradeable.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) { 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] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); 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); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 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); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable { function __ERC165_init() internal onlyInitializing { } function __ERC165_init_unchained() internal onlyInitializing { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165Upgradeable).interfaceId; } /** * @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[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165Upgradeable { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library MathUpgradeable { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 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 + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * 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 + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * 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; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { 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 log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.19; interface IExpandedNFT { function mintEdition(address to) external payable returns (uint256); function mintEditions(address[] memory to) external payable returns (uint256); function numberCanMint() external view returns (uint256); function owner() external view returns (address); }
{ "evmVersion": "paris", "libraries": {}, "metadata": { "bytecodeHash": "ipfs", "useLiteralContent": true }, "optimizer": { "enabled": true, "runs": 100 }, "remappings": [], "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
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A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.