ERC-721
NFT
Overview
Max Total Supply
10,000 MILAD
Holders
2,229
Market
Volume (24H)
0.0187 ETH
Min Price (24H)
$20.54 @ 0.007700 ETH
Max Price (24H)
$29.34 @ 0.010997 ETH
Other Info
Token Contract
Balance
1 MILADLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Minimal Proxy Contract for 0xe654652f59082b9f16ee26019333844de7178415
Contract Name:
Archetype
Compiler Version
v0.8.4+commit.c7e474f2
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT // Archetype v0.3.1 // // d8888 888 888 // d88888 888 888 // d88P888 888 888 // d88P 888 888d888 .d8888b 88888b. .d88b. 888888 888 888 88888b. .d88b. // d88P 888 888P" d88P" 888 "88b d8P Y8b 888 888 888 888 "88b d8P Y8b // d88P 888 888 888 888 888 88888888 888 888 888 888 888 88888888 // d8888888888 888 Y88b. 888 888 Y8b. Y88b. Y88b 888 888 d88P Y8b. // d88P 888 888 "Y8888P 888 888 "Y8888 "Y888 "Y88888 88888P" "Y8888 // 888 888 // Y8b d88P 888 // "Y88P" 888 pragma solidity ^0.8.4; import "erc721a-upgradeable/contracts/ERC721AUpgradeable.sol"; import "erc721a-upgradeable/contracts/ERC721A__Initializable.sol"; import "./ERC721A__OwnableUpgradeable.sol"; import "solady/src/utils/MerkleProofLib.sol"; import "solady/src/utils/LibString.sol"; import "solady/src/utils/ECDSA.sol"; error InvalidConfig(); error MintNotYetStarted(); error WalletUnauthorizedToMint(); error InsufficientEthSent(); error ExcessiveEthSent(); error MaxSupplyExceeded(); error NumberOfMintsExceeded(); error MintingPaused(); error InvalidReferral(); error InvalidSignature(); error BalanceEmpty(); error TransferFailed(); error MaxBatchSizeExceeded(); error NotTokenOwner(); error WrongPassword(); error LockedForever(); contract Archetype is ERC721A__Initializable, ERC721AUpgradeable, ERC721A__OwnableUpgradeable { // // EVENTS // event Invited(bytes32 indexed key, bytes32 indexed cid); event Referral(address indexed affiliate, uint128 wad, uint256 numMints); event Withdrawal(address indexed src, uint128 wad); // // STRUCTS // struct Auth { bytes32 key; bytes32[] proof; } struct MintTier { uint16 numMints; uint16 mintDiscount; //BPS } struct Discount { uint16 affiliateDiscount; //BPS MintTier[] mintTiers; } struct Config { string unrevealedUri; string baseUri; address affiliateSigner; address ownerAltPayout; // optional alternative address for owner withdrawals. address superAffiliatePayout; // optional super affiliate address, will receive half of platform fee if set. uint32 maxSupply; uint32 maxBatchSize; uint16 affiliateFee; //BPS uint16 platformFee; //BPS Discount discounts; } struct Invite { uint128 price; uint64 start; uint64 limit; } struct Invitelist { bytes32 key; bytes32 cid; Invite invite; } struct OwnerBalance { uint128 owner; uint128 platform; } // // VARIABLES // mapping(bytes32 => Invite) public invites; mapping(address => mapping(bytes32 => uint256)) private minted; mapping(address => uint128) public affiliateBalance; mapping(uint256 => bytes) public tokenMsg; address private constant PLATFORM = 0x86B82972282Dd22348374bC63fd21620F7ED847B; // address private constant PLATFORM = 0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC; // TEST (account[2]) uint16 private constant MAXBPS = 5000; // max fee or discount is 50% bool public revealed; bool public uriUnlocked; bool public maxSupplyUnlocked; bool public affiliateFeeUnlocked; bool public discountsUnlocked; bool public ownerAltPayoutUnlocked; string public provenance; bool public provenanceHashUnlocked; OwnerBalance public ownerBalance; Config public config; // // METHODS // function initialize( string memory name, string memory symbol, Config calldata config_ ) external initializerERC721A { __ERC721A_init(name, symbol); // check max bps not reached and min platform fee. if ( config_.affiliateFee > MAXBPS || config_.platformFee > MAXBPS || config_.platformFee < 500 || config_.discounts.affiliateDiscount > MAXBPS || config_.affiliateSigner == address(0) || config_.maxBatchSize == 0 ) { revert InvalidConfig(); } // ensure mint tiers are correctly ordered from highest to lowest. for (uint256 i = 1; i < config_.discounts.mintTiers.length; i++) { if ( config_.discounts.mintTiers[i].mintDiscount > MAXBPS || config_.discounts.mintTiers[i].numMints > config_.discounts.mintTiers[i - 1].numMints ) { revert InvalidConfig(); } } config = config_; __Ownable_init(); revealed = false; uriUnlocked = true; maxSupplyUnlocked = true; affiliateFeeUnlocked = true; discountsUnlocked = true; ownerAltPayoutUnlocked = true; provenanceHashUnlocked = true; } function mint( Auth calldata auth, uint256 quantity, address affiliate, bytes calldata signature ) external payable { Invite memory i = invites[auth.key]; if (affiliate != address(0)) { if (affiliate == PLATFORM || affiliate == owner() || affiliate == msg.sender) { revert InvalidReferral(); } validateAffiliate(affiliate, signature, config.affiliateSigner); } if (i.limit == 0) { revert MintingPaused(); } if (!verify(auth, msg.sender)) { revert WalletUnauthorizedToMint(); } if (block.timestamp < i.start) { revert MintNotYetStarted(); } if (i.limit < config.maxSupply) { uint256 totalAfterMint = minted[msg.sender][auth.key] + quantity; if (totalAfterMint > i.limit) { revert NumberOfMintsExceeded(); } } if (quantity > config.maxBatchSize) { revert MaxBatchSizeExceeded(); } if ((_nextTokenId() + quantity) > config.maxSupply) { revert MaxSupplyExceeded(); } uint256 cost = computePrice(i.price, quantity, affiliate != address(0)); if (msg.value < cost) { revert InsufficientEthSent(); } if (msg.value > cost) { revert ExcessiveEthSent(); } _mint(msg.sender, quantity); if (i.limit < config.maxSupply) { minted[msg.sender][auth.key] += quantity; } uint128 value = uint128(msg.value); uint128 affiliateWad = 0; if (affiliate != address(0)) { affiliateWad = (value * config.affiliateFee) / 10000; affiliateBalance[affiliate] += affiliateWad; emit Referral(affiliate, affiliateWad, quantity); } uint128 superAffiliateWad = 0; if (config.superAffiliatePayout != address(0)) { superAffiliateWad = ((value * config.platformFee) / 2) / 10000; affiliateBalance[config.superAffiliatePayout] += superAffiliateWad; } OwnerBalance memory balance = ownerBalance; uint128 platformWad = ((value * config.platformFee) / 10000) - superAffiliateWad; uint128 ownerWad = value - affiliateWad - platformWad - superAffiliateWad; ownerBalance = OwnerBalance({ owner: balance.owner + ownerWad, platform: balance.platform + platformWad }); } // calculate price based on affiliate usage and mint discounts function computePrice( uint128 price, uint256 numTokens, bool affiliateUsed ) public view returns (uint256) { uint256 cost = price * numTokens; if (affiliateUsed) { cost = cost - ((cost * config.discounts.affiliateDiscount) / 10000); } for (uint256 i = 0; i < config.discounts.mintTiers.length; i++) { if (numTokens >= config.discounts.mintTiers[i].numMints) { return cost = cost - ((cost * config.discounts.mintTiers[i].mintDiscount) / 10000); } } return cost; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { if (!_exists(tokenId)) revert URIQueryForNonexistentToken(); if (revealed == false) { return string(abi.encodePacked(config.unrevealedUri, LibString.toString(tokenId))); } return bytes(config.baseUri).length != 0 ? string(abi.encodePacked(config.baseUri, LibString.toString(tokenId))) : ""; } function reveal() public onlyOwner { revealed = true; } function _startTokenId() internal view virtual override returns (uint256) { return 1; } /// @notice the password is "forever" function lockURI(string memory password) public onlyOwner { if (keccak256(abi.encodePacked(password)) != keccak256(abi.encodePacked("forever"))) { revert WrongPassword(); } uriUnlocked = false; } function setUnrevealedURI(string memory _unrevealedURI) public onlyOwner { config.unrevealedUri = _unrevealedURI; } function setBaseURI(string memory baseUri_) public onlyOwner { if (!uriUnlocked) { revert LockedForever(); } config.baseUri = baseUri_; } function setMaxSupply(uint32 maxSupply_) public onlyOwner { if (!maxSupplyUnlocked) { revert LockedForever(); } if (maxSupply_ < _nextTokenId()) { revert MaxSupplyExceeded(); } config.maxSupply = maxSupply_; } /// @notice the password is "forever" function lockMaxSupply(string memory password) public onlyOwner { if (keccak256(abi.encodePacked(password)) != keccak256(abi.encodePacked("forever"))) { revert WrongPassword(); } maxSupplyUnlocked = false; } function setAffiliateFee(uint16 affiliateFee_) public onlyOwner { if (!affiliateFeeUnlocked) { revert LockedForever(); } if (affiliateFee_ > MAXBPS) { revert InvalidConfig(); } config.affiliateFee = affiliateFee_; } /// @notice the password is "forever" function lockAffiliateFee(string memory password) public onlyOwner { if (keccak256(abi.encodePacked(password)) != keccak256(abi.encodePacked("forever"))) { revert WrongPassword(); } affiliateFeeUnlocked = false; } function setDiscounts(Discount calldata discounts_) public onlyOwner { if (!discountsUnlocked) { revert LockedForever(); } if (discounts_.affiliateDiscount > MAXBPS) { revert InvalidConfig(); } // ensure mint tiers are correctly ordered from highest to lowest. for (uint256 i = 1; i < discounts_.mintTiers.length; i++) { if ( discounts_.mintTiers[i].mintDiscount > MAXBPS || discounts_.mintTiers[i].numMints > discounts_.mintTiers[i - 1].numMints ) { revert InvalidConfig(); } } config.discounts = discounts_; } /// @notice the password is "forever" function lockDiscounts(string memory password) public onlyOwner { if (keccak256(abi.encodePacked(password)) != keccak256(abi.encodePacked("forever"))) { revert WrongPassword(); } discountsUnlocked = false; } /// @notice Set BAYC-style provenance once it's calculated function setProvenanceHash(string memory provenanceHash) public onlyOwner { if (!provenanceHashUnlocked) { revert LockedForever(); } provenance = provenanceHash; } /// @notice the password is "forever" function lockProvenanceHash(string memory password) public onlyOwner { if (keccak256(abi.encodePacked(password)) != keccak256(abi.encodePacked("forever"))) { revert WrongPassword(); } provenanceHashUnlocked = false; } function setOwnerAltPayout(address ownerAltPayout) public onlyOwner { if (!ownerAltPayoutUnlocked) { revert LockedForever(); } config.ownerAltPayout = ownerAltPayout; } /// @notice the password is "forever" function lockOwnerAltPayout(string memory password) public onlyOwner { if (keccak256(abi.encodePacked(password)) != keccak256(abi.encodePacked("forever"))) { revert WrongPassword(); } ownerAltPayoutUnlocked = false; } function withdraw() public { uint128 wad = 0; if (msg.sender == owner() || msg.sender == config.ownerAltPayout || msg.sender == PLATFORM) { OwnerBalance memory balance = ownerBalance; if (msg.sender == owner() || msg.sender == config.ownerAltPayout) { wad = balance.owner; ownerBalance = OwnerBalance({ owner: 0, platform: balance.platform }); } else { wad = balance.platform; ownerBalance = OwnerBalance({ owner: balance.owner, platform: 0 }); } } else { wad = affiliateBalance[msg.sender]; affiliateBalance[msg.sender] = 0; } if (wad == 0) { revert BalanceEmpty(); } bool success = false; // send to ownerAltPayout if set and owner is withdrawing if (msg.sender == owner() && config.ownerAltPayout != address(0)) { (success, ) = payable(config.ownerAltPayout).call{ value: wad }(""); } else { (success, ) = msg.sender.call{ value: wad }(""); } if (!success) { revert TransferFailed(); } emit Withdrawal(msg.sender, wad); } function setInvites(Invitelist[] calldata invitelist) external onlyOwner { for (uint256 i = 0; i < invitelist.length; i++) { Invitelist calldata list = invitelist[i]; invites[list.key] = list.invite; emit Invited(list.key, list.cid); } } function setInvite( bytes32 _key, bytes32 _cid, Invite calldata _invite ) external onlyOwner { invites[_key] = _invite; emit Invited(_key, _cid); } // based on: https://github.com/miguelmota/merkletreejs-solidity/blob/master/contracts/MerkleProof.sol function verify(Auth calldata auth, address account) internal pure returns (bool) { if (auth.key == "") return true; return MerkleProofLib.verify(auth.proof, auth.key, keccak256(abi.encodePacked(account))); } function validateAffiliate( address affiliate, bytes calldata signature, address affiliateSigner ) internal view { bytes32 signedMessagehash = ECDSA.toEthSignedMessageHash( keccak256(abi.encodePacked(affiliate)) ); address signer = ECDSA.recover(signedMessagehash, signature); if (signer != affiliateSigner) { revert InvalidSignature(); } } function setTokenMsg(uint256 tokenId, string calldata message) public { if (msg.sender != ownerOf(tokenId)) { revert NotTokenOwner(); } tokenMsg[tokenId] = bytes(message); } function getTokenMsg(uint256 tokenId) public view returns (string memory) { if (!_exists(tokenId)) revert URIQueryForNonexistentToken(); return string(tokenMsg[tokenId]); } }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.2 // Creator: Chiru Labs pragma solidity ^0.8.4; import "./IERC721AUpgradeable.sol"; import {ERC721AStorage} from "./ERC721AStorage.sol"; import "./ERC721A__Initializable.sol"; /** * @dev Interface of ERC721 token receiver. */ interface ERC721A__IERC721ReceiverUpgradeable { function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } /** * @title ERC721A * * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721) * Non-Fungible Token Standard, including the Metadata extension. * Optimized for lower gas during batch mints. * * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...) * starting from `_startTokenId()`. * * Assumptions: * * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply. * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256). */ contract ERC721AUpgradeable is ERC721A__Initializable, IERC721AUpgradeable { using ERC721AStorage for ERC721AStorage.Layout; // ============================================================= // CONSTANTS // ============================================================= // Mask of an entry in packed address data. uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1; // The bit position of `numberMinted` in packed address data. uint256 private constant _BITPOS_NUMBER_MINTED = 64; // The bit position of `numberBurned` in packed address data. uint256 private constant _BITPOS_NUMBER_BURNED = 128; // The bit position of `aux` in packed address data. uint256 private constant _BITPOS_AUX = 192; // Mask of all 256 bits in packed address data except the 64 bits for `aux`. uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1; // The bit position of `startTimestamp` in packed ownership. uint256 private constant _BITPOS_START_TIMESTAMP = 160; // The bit mask of the `burned` bit in packed ownership. uint256 private constant _BITMASK_BURNED = 1 << 224; // The bit position of the `nextInitialized` bit in packed ownership. uint256 private constant _BITPOS_NEXT_INITIALIZED = 225; // The bit mask of the `nextInitialized` bit in packed ownership. uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225; // The bit position of `extraData` in packed ownership. uint256 private constant _BITPOS_EXTRA_DATA = 232; // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`. uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1; // The mask of the lower 160 bits for addresses. uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1; // The maximum `quantity` that can be minted with {_mintERC2309}. // This limit is to prevent overflows on the address data entries. // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309} // is required to cause an overflow, which is unrealistic. uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000; // The `Transfer` event signature is given by: // `keccak256(bytes("Transfer(address,address,uint256)"))`. bytes32 private constant _TRANSFER_EVENT_SIGNATURE = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef; // ============================================================= // CONSTRUCTOR // ============================================================= function __ERC721A_init(string memory name_, string memory symbol_) internal onlyInitializingERC721A { __ERC721A_init_unchained(name_, symbol_); } function __ERC721A_init_unchained(string memory name_, string memory symbol_) internal onlyInitializingERC721A { ERC721AStorage.layout()._name = name_; ERC721AStorage.layout()._symbol = symbol_; ERC721AStorage.layout()._currentIndex = _startTokenId(); } // ============================================================= // TOKEN COUNTING OPERATIONS // ============================================================= /** * @dev Returns the starting token ID. * To change the starting token ID, please override this function. */ function _startTokenId() internal view virtual returns (uint256) { return 0; } /** * @dev Returns the next token ID to be minted. */ function _nextTokenId() internal view virtual returns (uint256) { return ERC721AStorage.layout()._currentIndex; } /** * @dev Returns the total number of tokens in existence. * Burned tokens will reduce the count. * To get the total number of tokens minted, please see {_totalMinted}. */ function totalSupply() public view virtual override returns (uint256) { // Counter underflow is impossible as _burnCounter cannot be incremented // more than `_currentIndex - _startTokenId()` times. unchecked { return ERC721AStorage.layout()._currentIndex - ERC721AStorage.layout()._burnCounter - _startTokenId(); } } /** * @dev Returns the total amount of tokens minted in the contract. */ function _totalMinted() internal view virtual returns (uint256) { // Counter underflow is impossible as `_currentIndex` does not decrement, // and it is initialized to `_startTokenId()`. unchecked { return ERC721AStorage.layout()._currentIndex - _startTokenId(); } } /** * @dev Returns the total number of tokens burned. */ function _totalBurned() internal view virtual returns (uint256) { return ERC721AStorage.layout()._burnCounter; } // ============================================================= // ADDRESS DATA OPERATIONS // ============================================================= /** * @dev Returns the number of tokens in `owner`'s account. */ function balanceOf(address owner) public view virtual override returns (uint256) { if (owner == address(0)) revert BalanceQueryForZeroAddress(); return ERC721AStorage.layout()._packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens minted by `owner`. */ function _numberMinted(address owner) internal view returns (uint256) { return (ERC721AStorage.layout()._packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens burned by or on behalf of `owner`. */ function _numberBurned(address owner) internal view returns (uint256) { return (ERC721AStorage.layout()._packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). */ function _getAux(address owner) internal view returns (uint64) { return uint64(ERC721AStorage.layout()._packedAddressData[owner] >> _BITPOS_AUX); } /** * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). * If there are multiple variables, please pack them into a uint64. */ function _setAux(address owner, uint64 aux) internal virtual { uint256 packed = ERC721AStorage.layout()._packedAddressData[owner]; uint256 auxCasted; // Cast `aux` with assembly to avoid redundant masking. assembly { auxCasted := aux } packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX); ERC721AStorage.layout()._packedAddressData[owner] = packed; } // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { // The interface IDs are constants representing the first 4 bytes // of the XOR of all function selectors in the interface. // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165) // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`) return interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165. interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721. interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata. } // ============================================================= // IERC721Metadata // ============================================================= /** * @dev Returns the token collection name. */ function name() public view virtual override returns (string memory) { return ERC721AStorage.layout()._name; } /** * @dev Returns the token collection symbol. */ function symbol() public view virtual override returns (string memory) { return ERC721AStorage.layout()._symbol; } /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { if (!_exists(tokenId)) revert URIQueryForNonexistentToken(); string memory baseURI = _baseURI(); return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : ''; } /** * @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, it can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ''; } // ============================================================= // OWNERSHIPS OPERATIONS // ============================================================= /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { return address(uint160(_packedOwnershipOf(tokenId))); } /** * @dev Gas spent here starts off proportional to the maximum mint batch size. * It gradually moves to O(1) as tokens get transferred around over time. */ function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnershipOf(tokenId)); } /** * @dev Returns the unpacked `TokenOwnership` struct at `index`. */ function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(ERC721AStorage.layout()._packedOwnerships[index]); } /** * @dev Initializes the ownership slot minted at `index` for efficiency purposes. */ function _initializeOwnershipAt(uint256 index) internal virtual { if (ERC721AStorage.layout()._packedOwnerships[index] == 0) { ERC721AStorage.layout()._packedOwnerships[index] = _packedOwnershipOf(index); } } /** * Returns the packed ownership data of `tokenId`. */ function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) { uint256 curr = tokenId; unchecked { if (_startTokenId() <= curr) if (curr < ERC721AStorage.layout()._currentIndex) { uint256 packed = ERC721AStorage.layout()._packedOwnerships[curr]; // If not burned. if (packed & _BITMASK_BURNED == 0) { // Invariant: // There will always be an initialized ownership slot // (i.e. `ownership.addr != address(0) && ownership.burned == false`) // before an unintialized ownership slot // (i.e. `ownership.addr == address(0) && ownership.burned == false`) // Hence, `curr` will not underflow. // // We can directly compare the packed value. // If the address is zero, packed will be zero. while (packed == 0) { packed = ERC721AStorage.layout()._packedOwnerships[--curr]; } return packed; } } } revert OwnerQueryForNonexistentToken(); } /** * @dev Returns the unpacked `TokenOwnership` struct from `packed`. */ function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) { ownership.addr = address(uint160(packed)); ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP); ownership.burned = packed & _BITMASK_BURNED != 0; ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA); } /** * @dev Packs ownership data into a single uint256. */ function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`. result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags)) } } /** * @dev Returns the `nextInitialized` flag set if `quantity` equals 1. */ function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) { // For branchless setting of the `nextInitialized` flag. assembly { // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`. result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1)) } } // ============================================================= // APPROVAL OPERATIONS // ============================================================= /** * @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) public virtual override { address owner = ownerOf(tokenId); if (_msgSenderERC721A() != owner) if (!isApprovedForAll(owner, _msgSenderERC721A())) { revert ApprovalCallerNotOwnerNorApproved(); } ERC721AStorage.layout()._tokenApprovals[tokenId].value = to; emit Approval(owner, to, tokenId); } /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken(); return ERC721AStorage.layout()._tokenApprovals[tokenId].value; } /** * @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) public virtual override { if (operator == _msgSenderERC721A()) revert ApproveToCaller(); ERC721AStorage.layout()._operatorApprovals[_msgSenderERC721A()][operator] = approved; emit ApprovalForAll(_msgSenderERC721A(), operator, approved); } /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return ERC721AStorage.layout()._operatorApprovals[owner][operator]; } /** * @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. See {_mint}. */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _startTokenId() <= tokenId && tokenId < ERC721AStorage.layout()._currentIndex && // If within bounds, ERC721AStorage.layout()._packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned. } /** * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`. */ function _isSenderApprovedOrOwner( address approvedAddress, address owner, address msgSender ) private pure returns (bool result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean. msgSender := and(msgSender, _BITMASK_ADDRESS) // `msgSender == owner || msgSender == approvedAddress`. result := or(eq(msgSender, owner), eq(msgSender, approvedAddress)) } } /** * @dev Returns the storage slot and value for the approved address of `tokenId`. */ function _getApprovedSlotAndAddress(uint256 tokenId) private view returns (uint256 approvedAddressSlot, address approvedAddress) { ERC721AStorage.TokenApprovalRef storage tokenApproval = ERC721AStorage.layout()._tokenApprovals[tokenId]; // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`. assembly { approvedAddressSlot := tokenApproval.slot approvedAddress := sload(approvedAddressSlot) } } // ============================================================= // TRANSFER OPERATIONS // ============================================================= /** * @dev Transfers `tokenId` from `from` to `to`. * * 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 ) public virtual override { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner(); (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId); // The nested ifs save around 20+ gas over a compound boolean condition. if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A())) if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved(); if (to == address(0)) revert TransferToZeroAddress(); _beforeTokenTransfers(from, to, tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256. unchecked { // We can directly increment and decrement the balances. --ERC721AStorage.layout()._packedAddressData[from]; // Updates: `balance -= 1`. ++ERC721AStorage.layout()._packedAddressData[to]; // Updates: `balance += 1`. // Updates: // - `address` to the next owner. // - `startTimestamp` to the timestamp of transfering. // - `burned` to `false`. // - `nextInitialized` to `true`. ERC721AStorage.layout()._packedOwnerships[tokenId] = _packOwnershipData( to, _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (ERC721AStorage.layout()._packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != ERC721AStorage.layout()._currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. ERC721AStorage.layout()._packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, to, tokenId); _afterTokenTransfers(from, to, tokenId, 1); } /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ''); } /** * @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 memory _data ) public virtual override { transferFrom(from, to, tokenId); if (to.code.length != 0) if (!_checkContractOnERC721Received(from, to, tokenId, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } /** * @dev Hook that is called before a set of serially-ordered token IDs * are about to be transferred. This includes minting. * And also called before burning one token. * * `startTokenId` - the first token ID to be transferred. * `quantity` - the amount to be transferred. * * 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, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _beforeTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Hook that is called after a set of serially-ordered token IDs * have been transferred. This includes minting. * And also called after one token has been burned. * * `startTokenId` - the first token ID to be transferred. * `quantity` - the amount to be transferred. * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been * transferred to `to`. * - When `from` is zero, `tokenId` has been minted for `to`. * - When `to` is zero, `tokenId` has been burned by `from`. * - `from` and `to` are never both zero. */ function _afterTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract. * * `from` - Previous owner of the given token ID. * `to` - Target address that will receive the token. * `tokenId` - Token ID to be transferred. * `_data` - Optional data to send along with the call. * * Returns whether the call correctly returned the expected magic value. */ function _checkContractOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { try ERC721A__IERC721ReceiverUpgradeable(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (bytes4 retval) { return retval == ERC721A__IERC721ReceiverUpgradeable(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert TransferToNonERC721ReceiverImplementer(); } else { assembly { revert(add(32, reason), mload(reason)) } } } } // ============================================================= // MINT OPERATIONS // ============================================================= /** * @dev Mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {Transfer} event for each mint. */ function _mint(address to, uint256 quantity) internal virtual { uint256 startTokenId = ERC721AStorage.layout()._currentIndex; if (quantity == 0) revert MintZeroQuantity(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are incredibly unrealistic. // `balance` and `numberMinted` have a maximum limit of 2**64. // `tokenId` has a maximum limit of 2**256. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. ERC721AStorage.layout()._packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. ERC721AStorage.layout()._packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); uint256 toMasked; uint256 end = startTokenId + quantity; // Use assembly to loop and emit the `Transfer` event for gas savings. // The duplicated `log4` removes an extra check and reduces stack juggling. // The assembly, together with the surrounding Solidity code, have been // delicately arranged to nudge the compiler into producing optimized opcodes. assembly { // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean. toMasked := and(to, _BITMASK_ADDRESS) // Emit the `Transfer` event. log4( 0, // Start of data (0, since no data). 0, // End of data (0, since no data). _TRANSFER_EVENT_SIGNATURE, // Signature. 0, // `address(0)`. toMasked, // `to`. startTokenId // `tokenId`. ) for { let tokenId := add(startTokenId, 1) } iszero(eq(tokenId, end)) { tokenId := add(tokenId, 1) } { // Emit the `Transfer` event. Similar to above. log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId) } } if (toMasked == 0) revert MintToZeroAddress(); ERC721AStorage.layout()._currentIndex = end; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Mints `quantity` tokens and transfers them to `to`. * * This function is intended for efficient minting only during contract creation. * * It emits only one {ConsecutiveTransfer} as defined in * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309), * instead of a sequence of {Transfer} event(s). * * Calling this function outside of contract creation WILL make your contract * non-compliant with the ERC721 standard. * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309 * {ConsecutiveTransfer} event is only permissible during contract creation. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {ConsecutiveTransfer} event. */ function _mintERC2309(address to, uint256 quantity) internal virtual { uint256 startTokenId = ERC721AStorage.layout()._currentIndex; if (to == address(0)) revert MintToZeroAddress(); if (quantity == 0) revert MintZeroQuantity(); if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are unrealistic due to the above check for `quantity` to be below the limit. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. ERC721AStorage.layout()._packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. ERC721AStorage.layout()._packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to); ERC721AStorage.layout()._currentIndex = startTokenId + quantity; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Safely mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - If `to` refers to a smart contract, it must implement * {IERC721Receiver-onERC721Received}, which is called for each safe transfer. * - `quantity` must be greater than 0. * * See {_mint}. * * Emits a {Transfer} event for each mint. */ function _safeMint( address to, uint256 quantity, bytes memory _data ) internal virtual { _mint(to, quantity); unchecked { if (to.code.length != 0) { uint256 end = ERC721AStorage.layout()._currentIndex; uint256 index = end - quantity; do { if (!_checkContractOnERC721Received(address(0), to, index++, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } while (index < end); // Reentrancy protection. if (ERC721AStorage.layout()._currentIndex != end) revert(); } } } /** * @dev Equivalent to `_safeMint(to, quantity, '')`. */ function _safeMint(address to, uint256 quantity) internal virtual { _safeMint(to, quantity, ''); } // ============================================================= // BURN OPERATIONS // ============================================================= /** * @dev Equivalent to `_burn(tokenId, false)`. */ function _burn(uint256 tokenId) internal virtual { _burn(tokenId, false); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId, bool approvalCheck) internal virtual { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); address from = address(uint160(prevOwnershipPacked)); (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId); if (approvalCheck) { // The nested ifs save around 20+ gas over a compound boolean condition. if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A())) if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved(); } _beforeTokenTransfers(from, address(0), tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256. unchecked { // Updates: // - `balance -= 1`. // - `numberBurned += 1`. // // We can directly decrement the balance, and increment the number burned. // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`. ERC721AStorage.layout()._packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1; // Updates: // - `address` to the last owner. // - `startTimestamp` to the timestamp of burning. // - `burned` to `true`. // - `nextInitialized` to `true`. ERC721AStorage.layout()._packedOwnerships[tokenId] = _packOwnershipData( from, (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (ERC721AStorage.layout()._packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != ERC721AStorage.layout()._currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. ERC721AStorage.layout()._packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, address(0), tokenId); _afterTokenTransfers(from, address(0), tokenId, 1); // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times. unchecked { ERC721AStorage.layout()._burnCounter++; } } // ============================================================= // EXTRA DATA OPERATIONS // ============================================================= /** * @dev Directly sets the extra data for the ownership data `index`. */ function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual { uint256 packed = ERC721AStorage.layout()._packedOwnerships[index]; if (packed == 0) revert OwnershipNotInitializedForExtraData(); uint256 extraDataCasted; // Cast `extraData` with assembly to avoid redundant masking. assembly { extraDataCasted := extraData } packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA); ERC721AStorage.layout()._packedOwnerships[index] = packed; } /** * @dev Called during each token transfer to set the 24bit `extraData` field. * Intended to be overridden by the cosumer contract. * * `previousExtraData` - the value of `extraData` before transfer. * * 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, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _extraData( address from, address to, uint24 previousExtraData ) internal view virtual returns (uint24) {} /** * @dev Returns the next extra data for the packed ownership data. * The returned result is shifted into position. */ function _nextExtraData( address from, address to, uint256 prevOwnershipPacked ) private view returns (uint256) { uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA); return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA; } // ============================================================= // OTHER OPERATIONS // ============================================================= /** * @dev Returns the message sender (defaults to `msg.sender`). * * If you are writing GSN compatible contracts, you need to override this function. */ function _msgSenderERC721A() internal view virtual returns (address) { return msg.sender; } /** * @dev Converts a uint256 to its ASCII string decimal representation. */ function _toString(uint256 value) internal pure virtual returns (string memory str) { assembly { // The maximum value of a uint256 contains 78 digits (1 byte per digit), // but we allocate 0x80 bytes to keep the free memory pointer 32-byte word aligned. // We will need 1 32-byte word to store the length, // and 3 32-byte words to store a maximum of 78 digits. Total: 0x20 + 3 * 0x20 = 0x80. str := add(mload(0x40), 0x80) // Update the free memory pointer to allocate. mstore(0x40, str) // Cache the end of the memory to calculate the length later. let end := str // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for { let temp := value } 1 {} { str := sub(str, 1) // Write the character to the pointer. // The ASCII index of the '0' character is 48. mstore8(str, add(48, mod(temp, 10))) // Keep dividing `temp` until zero. temp := div(temp, 10) // prettier-ignore if iszero(temp) { break } } let length := sub(end, str) // Move the pointer 32 bytes leftwards to make room for the length. str := sub(str, 0x20) // Store the length. mstore(str, length) } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /** * @dev This is a base contract to aid in writing upgradeable diamond facet 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. * * 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. */ import {ERC721A__InitializableStorage} from "./ERC721A__InitializableStorage.sol"; abstract contract ERC721A__Initializable { using ERC721A__InitializableStorage for ERC721A__InitializableStorage.Layout; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializerERC721A() { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the // contract may have been reentered. require( ERC721A__InitializableStorage.layout()._initializing ? _isConstructor() : !ERC721A__InitializableStorage.layout()._initialized, 'ERC721A__Initializable: contract is already initialized' ); bool isTopLevelCall = !ERC721A__InitializableStorage.layout()._initializing; if (isTopLevelCall) { ERC721A__InitializableStorage.layout()._initializing = true; ERC721A__InitializableStorage.layout()._initialized = true; } _; if (isTopLevelCall) { ERC721A__InitializableStorage.layout()._initializing = false; } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} modifier, directly or indirectly. */ modifier onlyInitializingERC721A() { require( ERC721A__InitializableStorage.layout()._initializing, 'ERC721A__Initializable: contract is not initializing' ); _; } /// @dev Returns true if and only if the function is running in the constructor function _isConstructor() private view returns (bool) { // extcodesize checks the size of the code stored in an address, and // address returns the current address. Since the code is still not // deployed when running a constructor, any checks on its code size will // yield zero, making it an effective way to detect if a contract is // under construction or not. address self = address(this); uint256 cs; assembly { cs := extcodesize(self) } return cs == 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) import 'erc721a-upgradeable/contracts/ERC721A__Initializable.sol'; import 'erc721a-upgradeable/contracts/ERC721AUpgradeable.sol'; pragma solidity ^0.8.4; /** * @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 ERC721A__OwnableUpgradeable is ERC721A__Initializable, ERC721AUpgradeable { 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 onlyInitializingERC721A { __Ownable_init_unchained(); } function __Ownable_init_unchained() internal onlyInitializingERC721A { _transferOwnership(_msgSenderERC721A()); } /** * @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() == _msgSenderERC721A(), "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 pragma solidity ^0.8.4; /// @notice Gas optimized verification of proof of inclusion for a leaf in a Merkle tree. /// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/MerkleProofLib.sol) /// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/MerkleProofLib.sol) /// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/cryptography/MerkleProof.sol) library MerkleProofLib { function verify( bytes32[] calldata proof, bytes32 root, bytes32 leaf ) internal pure returns (bool isValid) { assembly { if proof.length { // Left shift by 5 is equivalent to multiplying by 0x20. let end := add(proof.offset, shl(5, proof.length)) // Initialize `offset` to the offset of `proof` in the calldata. let offset := proof.offset // Iterate over proof elements to compute root hash. // prettier-ignore for {} 1 {} { // Slot of `leaf` in scratch space. // If the condition is true: 0x20, otherwise: 0x00. let scratch := shl(5, gt(leaf, calldataload(offset))) // Store elements to hash contiguously in scratch space. // Scratch space is 64 bytes (0x00 - 0x3f) and both elements are 32 bytes. mstore(scratch, leaf) mstore(xor(scratch, 0x20), calldataload(offset)) // Reuse `leaf` to store the hash to reduce stack operations. leaf := keccak256(0x00, 0x40) offset := add(offset, 0x20) // prettier-ignore if iszero(lt(offset, end)) { break } } } isValid := eq(leaf, root) } } function verifyMultiProof( bytes32[] calldata proof, bytes32 root, bytes32[] calldata leafs, bool[] calldata flags ) internal pure returns (bool isValid) { // Rebuilds the root by consuming and producing values on a queue. // The queue starts with the `leafs` array, and goes into a `hashes` array. // After the process, the last element on the queue is verified // to be equal to the `root`. // // The `flags` array denotes whether the sibling // should be popped from the queue (`flag == true`), or // should be popped from the `proof` (`flag == false`). assembly { // If the number of flags is correct. // prettier-ignore for {} eq(add(leafs.length, proof.length), add(flags.length, 1)) {} { // Left shift by 5 is equivalent to multiplying by 0x20. // Compute the end calldata offset of `leafs`. let leafsEnd := add(leafs.offset, shl(5, leafs.length)) // These are the calldata offsets. let leafsOffset := leafs.offset let flagsOffset := flags.offset let proofOffset := proof.offset // We can use the free memory space for the queue. // We don't need to allocate, since the queue is temporary. let hashesFront := mload(0x40) let hashesBack := hashesFront // This is the end of the memory for the queue. let end := add(hashesBack, shl(5, flags.length)) // For the case where `proof.length + leafs.length == 1`. if iszero(flags.length) { // If `proof.length` is zero, `leafs.length` is 1. if iszero(proof.length) { isValid := eq(calldataload(leafsOffset), root) break } // If `leafs.length` is zero, `proof.length` is 1. if iszero(leafs.length) { isValid := eq(calldataload(proofOffset), root) break } } // prettier-ignore for {} 1 {} { let a := 0 // Pops a value from the queue into `a`. switch lt(leafsOffset, leafsEnd) case 0 { // Pop from `hashes` if there are no more leafs. a := mload(hashesFront) hashesFront := add(hashesFront, 0x20) } default { // Otherwise, pop from `leafs`. a := calldataload(leafsOffset) leafsOffset := add(leafsOffset, 0x20) } let b := 0 // If the flag is false, load the next proof, // else, pops from the queue. switch calldataload(flagsOffset) case 0 { // Loads the next proof. b := calldataload(proofOffset) proofOffset := add(proofOffset, 0x20) } default { // Pops a value from the queue into `a`. switch lt(leafsOffset, leafsEnd) case 0 { // Pop from `hashes` if there are no more leafs. b := mload(hashesFront) hashesFront := add(hashesFront, 0x20) } default { // Otherwise, pop from `leafs`. b := calldataload(leafsOffset) leafsOffset := add(leafsOffset, 0x20) } } // Advance to the next flag offset. flagsOffset := add(flagsOffset, 0x20) // Slot of `a` in scratch space. // If the condition is true: 0x20, otherwise: 0x00. let scratch := shl(5, gt(a, b)) // Hash the scratch space and push the result onto the queue. mstore(scratch, a) mstore(xor(scratch, 0x20), b) mstore(hashesBack, keccak256(0x00, 0x40)) hashesBack := add(hashesBack, 0x20) // prettier-ignore if iszero(lt(hashesBack, end)) { break } } // Checks if the last value in the queue is same as the root. isValid := eq(mload(sub(hashesBack, 0x20)), root) break } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @notice Library for converting numbers into strings and other string operations. /// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/LibString.sol) /// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/LibString.sol) library LibString { /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CUSTOM ERRORS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ error HexLengthInsufficient(); /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* DECIMAL OPERATIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ function toString(uint256 value) internal pure returns (string memory str) { assembly { // The maximum value of a uint256 contains 78 digits (1 byte per digit), but // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned. // We will need 1 word for the trailing zeros padding, 1 word for the length, // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0. let m := add(mload(0x40), 0xa0) // Update the free memory pointer to allocate. mstore(0x40, m) // Assign the `str` to the end. str := sub(m, 0x20) // Zeroize the slot after the string. mstore(str, 0) // Cache the end of the memory to calculate the length later. let end := str // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for { let temp := value } 1 {} { str := sub(str, 1) // Write the character to the pointer. // The ASCII index of the '0' character is 48. mstore8(str, add(48, mod(temp, 10))) // Keep dividing `temp` until zero. temp := div(temp, 10) // prettier-ignore if iszero(temp) { break } } let length := sub(end, str) // Move the pointer 32 bytes leftwards to make room for the length. str := sub(str, 0x20) // Store the length. mstore(str, length) } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* HEXADECIMAL OPERATIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ function toHexString(uint256 value, uint256 length) internal pure returns (string memory str) { assembly { let start := mload(0x40) // We need 0x20 bytes for the trailing zeros padding, `length * 2` bytes // for the digits, 0x02 bytes for the prefix, and 0x20 bytes for the length. // We add 0x20 to the total and round down to a multiple of 0x20. // (0x20 + 0x20 + 0x02 + 0x20) = 0x62. let m := add(start, and(add(shl(1, length), 0x62), not(0x1f))) // Allocate the memory. mstore(0x40, m) // Assign the `str` to the end. str := sub(m, 0x20) // Zeroize the slot after the string. mstore(str, 0) // Cache the end to calculate the length later. let end := str // Store "0123456789abcdef" in scratch space. mstore(0x0f, 0x30313233343536373839616263646566) let temp := value // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for {} 1 {} { str := sub(str, 2) mstore8(add(str, 1), mload(and(temp, 15))) mstore8(str, mload(and(shr(4, temp), 15))) temp := shr(8, temp) length := sub(length, 1) // prettier-ignore if iszero(length) { break } } if temp { // Store the function selector of `HexLengthInsufficient()`. mstore(0x00, 0x2194895a) // Revert with (offset, size). revert(0x1c, 0x04) } // Compute the string's length. let strLength := add(sub(end, str), 2) // Move the pointer and write the "0x" prefix. str := sub(str, 0x20) mstore(str, 0x3078) // Move the pointer and write the length. str := sub(str, 2) mstore(str, strLength) } } function toHexString(uint256 value) internal pure returns (string memory str) { assembly { let start := mload(0x40) // We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length, // 0x02 bytes for the prefix, and 0x40 bytes for the digits. // The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x40) is 0xa0. let m := add(start, 0xa0) // Allocate the memory. mstore(0x40, m) // Assign the `str` to the end. str := sub(m, 0x20) // Zeroize the slot after the string. mstore(str, 0) // Cache the end to calculate the length later. let end := str // Store "0123456789abcdef" in scratch space. mstore(0x0f, 0x30313233343536373839616263646566) // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for { let temp := value } 1 {} { str := sub(str, 2) mstore8(add(str, 1), mload(and(temp, 15))) mstore8(str, mload(and(shr(4, temp), 15))) temp := shr(8, temp) // prettier-ignore if iszero(temp) { break } } // Compute the string's length. let strLength := add(sub(end, str), 2) // Move the pointer and write the "0x" prefix. str := sub(str, 0x20) mstore(str, 0x3078) // Move the pointer and write the length. str := sub(str, 2) mstore(str, strLength) } } function toHexString(address value) internal pure returns (string memory str) { assembly { let start := mload(0x40) // We need 0x20 bytes for the length, 0x02 bytes for the prefix, // and 0x28 bytes for the digits. // The next multiple of 0x20 above (0x20 + 0x02 + 0x28) is 0x60. str := add(start, 0x60) // Allocate the memory. mstore(0x40, str) // Store "0123456789abcdef" in scratch space. mstore(0x0f, 0x30313233343536373839616263646566) let length := 20 // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for { let temp := value } 1 {} { str := sub(str, 2) mstore8(add(str, 1), mload(and(temp, 15))) mstore8(str, mload(and(shr(4, temp), 15))) temp := shr(8, temp) length := sub(length, 1) // prettier-ignore if iszero(length) { break } } // Move the pointer and write the "0x" prefix. str := sub(str, 32) mstore(str, 0x3078) // Move the pointer and write the length. str := sub(str, 2) mstore(str, 42) } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* OTHER STRING OPERATIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ function replace( string memory subject, string memory search, string memory replacement ) internal pure returns (string memory result) { assembly { let subjectLength := mload(subject) let searchLength := mload(search) let replacementLength := mload(replacement) subject := add(subject, 0x20) search := add(search, 0x20) replacement := add(replacement, 0x20) result := add(mload(0x40), 0x20) let subjectEnd := add(subject, subjectLength) if iszero(gt(searchLength, subjectLength)) { let subjectSearchEnd := add(sub(subjectEnd, searchLength), 1) let h := 0 if iszero(lt(searchLength, 32)) { h := keccak256(search, searchLength) } let m := shl(3, sub(32, and(searchLength, 31))) let s := mload(search) // prettier-ignore for {} 1 {} { let t := mload(subject) // Whether the first `searchLength % 32` bytes of // `subject` and `search` matches. if iszero(shr(m, xor(t, s))) { if h { if iszero(eq(keccak256(subject, searchLength), h)) { mstore(result, t) result := add(result, 1) subject := add(subject, 1) // prettier-ignore if iszero(lt(subject, subjectSearchEnd)) { break } continue } } // Copy the `replacement` one word at a time. // prettier-ignore for { let o := 0 } 1 {} { mstore(add(result, o), mload(add(replacement, o))) o := add(o, 0x20) // prettier-ignore if iszero(lt(o, replacementLength)) { break } } result := add(result, replacementLength) subject := add(subject, searchLength) if iszero(searchLength) { mstore(result, t) result := add(result, 1) subject := add(subject, 1) } // prettier-ignore if iszero(lt(subject, subjectSearchEnd)) { break } continue } mstore(result, t) result := add(result, 1) subject := add(subject, 1) // prettier-ignore if iszero(lt(subject, subjectSearchEnd)) { break } } } let resultRemainder := result result := add(mload(0x40), 0x20) let k := add(sub(resultRemainder, result), sub(subjectEnd, subject)) // Copy the rest of the string one word at a time. // prettier-ignore for {} lt(subject, subjectEnd) {} { mstore(resultRemainder, mload(subject)) resultRemainder := add(resultRemainder, 0x20) subject := add(subject, 0x20) } // Allocate memory for the length and the bytes, // rounded up to a multiple of 32. mstore(0x40, add(result, and(add(k, 0x40), not(0x1f)))) result := sub(result, 0x20) mstore(result, k) } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @notice Gas optimized ECDSA wrapper. /// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/ECDSA.sol) /// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/ECDSA.sol) /// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/cryptography/ECDSA.sol) library ECDSA { function recover(bytes32 hash, bytes calldata signature) internal view returns (address result) { assembly { if eq(signature.length, 65) { // Copy the free memory pointer so that we can restore it later. let m := mload(0x40) // Directly copy `r` and `s` from the calldata. calldatacopy(0x40, signature.offset, 0x40) // If `s` in lower half order, such that the signature is not malleable. // prettier-ignore if iszero(gt(mload(0x60), 0x7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a0)) { mstore(0x00, hash) // Compute `v` and store it in the scratch space. mstore(0x20, byte(0, calldataload(add(signature.offset, 0x40)))) pop( staticcall( gas(), // Amount of gas left for the transaction. 0x01, // Address of `ecrecover`. 0x00, // Start of input. 0x80, // Size of input. 0x40, // Start of output. 0x20 // Size of output. ) ) // Restore the zero slot. mstore(0x60, 0) // `returndatasize()` will be `0x20` upon success, and `0x00` otherwise. result := mload(sub(0x60, returndatasize())) } // Restore the free memory pointer. mstore(0x40, m) } } } function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal view returns (address result) { assembly { // Copy the free memory pointer so that we can restore it later. let m := mload(0x40) // prettier-ignore let s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) // If `s` in lower half order, such that the signature is not malleable. // prettier-ignore if iszero(gt(s, 0x7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a0)) { mstore(0x00, hash) mstore(0x20, add(shr(255, vs), 27)) mstore(0x40, r) mstore(0x60, s) pop( staticcall( gas(), // Amount of gas left for the transaction. 0x01, // Address of `ecrecover`. 0x00, // Start of input. 0x80, // Size of input. 0x40, // Start of output. 0x20 // Size of output. ) ) // Restore the zero slot. mstore(0x60, 0) // `returndatasize()` will be `0x20` upon success, and `0x00` otherwise. result := mload(sub(0x60, returndatasize())) } // Restore the free memory pointer. mstore(0x40, m) } } function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 result) { assembly { // Store into scratch space for keccak256. mstore(0x20, hash) mstore(0x00, "\x00\x00\x00\x00\x19Ethereum Signed Message:\n32") // 0x40 - 0x04 = 0x3c result := keccak256(0x04, 0x3c) } } function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32 result) { assembly { // We need at most 128 bytes for Ethereum signed message header. // The max length of the ASCII reprenstation of a uint256 is 78 bytes. // The length of "\x19Ethereum Signed Message:\n" is 26 bytes (i.e. 0x1a). // The next multiple of 32 above 78 + 26 is 128 (i.e. 0x80). // Instead of allocating, we temporarily copy the 128 bytes before the // start of `s` data to some variables. let m3 := mload(sub(s, 0x60)) let m2 := mload(sub(s, 0x40)) let m1 := mload(sub(s, 0x20)) // The length of `s` is in bytes. let sLength := mload(s) let ptr := add(s, 0x20) // `end` marks the end of the memory which we will compute the keccak256 of. let end := add(ptr, sLength) // Convert the length of the bytes to ASCII decimal representation // and store it into the memory. // prettier-ignore for { let temp := sLength } 1 {} { ptr := sub(ptr, 1) mstore8(ptr, add(48, mod(temp, 10))) temp := div(temp, 10) // prettier-ignore if iszero(temp) { break } } // Copy the header over to the memory. mstore(sub(ptr, 0x20), "\x00\x00\x00\x00\x00\x00\x19Ethereum Signed Message:\n") // Compute the keccak256 of the memory. result := keccak256(sub(ptr, 0x1a), sub(end, sub(ptr, 0x1a))) // Restore the previous memory. mstore(s, sLength) mstore(sub(s, 0x20), m1) mstore(sub(s, 0x40), m2) mstore(sub(s, 0x60), m3) } } }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.2 // Creator: Chiru Labs pragma solidity ^0.8.4; /** * @dev Interface of ERC721A. */ interface IERC721AUpgradeable { /** * The caller must own the token or be an approved operator. */ error ApprovalCallerNotOwnerNorApproved(); /** * The token does not exist. */ error ApprovalQueryForNonexistentToken(); /** * The caller cannot approve to their own address. */ error ApproveToCaller(); /** * Cannot query the balance for the zero address. */ error BalanceQueryForZeroAddress(); /** * Cannot mint to the zero address. */ error MintToZeroAddress(); /** * The quantity of tokens minted must be more than zero. */ error MintZeroQuantity(); /** * The token does not exist. */ error OwnerQueryForNonexistentToken(); /** * The caller must own the token or be an approved operator. */ error TransferCallerNotOwnerNorApproved(); /** * The token must be owned by `from`. */ error TransferFromIncorrectOwner(); /** * Cannot safely transfer to a contract that does not implement the * ERC721Receiver interface. */ error TransferToNonERC721ReceiverImplementer(); /** * Cannot transfer to the zero address. */ error TransferToZeroAddress(); /** * The token does not exist. */ error URIQueryForNonexistentToken(); /** * The `quantity` minted with ERC2309 exceeds the safety limit. */ error MintERC2309QuantityExceedsLimit(); /** * The `extraData` cannot be set on an unintialized ownership slot. */ error OwnershipNotInitializedForExtraData(); // ============================================================= // STRUCTS // ============================================================= struct TokenOwnership { // The address of the owner. address addr; // Stores the start time of ownership with minimal overhead for tokenomics. uint64 startTimestamp; // Whether the token has been burned. bool burned; // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}. uint24 extraData; } // ============================================================= // TOKEN COUNTERS // ============================================================= /** * @dev Returns the total number of tokens in existence. * Burned tokens will reduce the count. * To get the total number of tokens minted, please see {_totalMinted}. */ function totalSupply() external view returns (uint256); // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); // ============================================================= // IERC721 // ============================================================= /** * @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`, * 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 be 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, bytes calldata data ) external; /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} * whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token * by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the * zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} * for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll}. */ function isApprovedForAll(address owner, address operator) external view returns (bool); // ============================================================= // IERC721Metadata // ============================================================= /** * @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); // ============================================================= // IERC2309 // ============================================================= /** * @dev Emitted when tokens in `fromTokenId` to `toTokenId` * (inclusive) is transferred from `from` to `to`, as defined in the * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard. * * See {_mintERC2309} for more details. */ event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; library ERC721AStorage { // Reference type for token approval. struct TokenApprovalRef { address value; } struct Layout { // ============================================================= // STORAGE // ============================================================= // The next token ID to be minted. uint256 _currentIndex; // The number of tokens burned. uint256 _burnCounter; // Token name string _name; // Token symbol string _symbol; // Mapping from token ID to ownership details // An empty struct value does not necessarily mean the token is unowned. // See {_packedOwnershipOf} implementation for details. // // Bits Layout: // - [0..159] `addr` // - [160..223] `startTimestamp` // - [224] `burned` // - [225] `nextInitialized` // - [232..255] `extraData` mapping(uint256 => uint256) _packedOwnerships; // Mapping owner address to address data. // // Bits Layout: // - [0..63] `balance` // - [64..127] `numberMinted` // - [128..191] `numberBurned` // - [192..255] `aux` mapping(address => uint256) _packedAddressData; // Mapping from token ID to approved address. mapping(uint256 => ERC721AStorage.TokenApprovalRef) _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) _operatorApprovals; } bytes32 internal constant STORAGE_SLOT = keccak256('ERC721A.contracts.storage.ERC721A'); function layout() internal pure returns (Layout storage l) { bytes32 slot = STORAGE_SLOT; assembly { l.slot := slot } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /** * @dev This is a base storage for the initialization function for upgradeable diamond facet contracts **/ library ERC721A__InitializableStorage { struct Layout { /* * Indicates that the contract has been initialized. */ bool _initialized; /* * Indicates that the contract is in the process of being initialized. */ bool _initializing; } bytes32 internal constant STORAGE_SLOT = keccak256("ERC721A.contracts.storage.initializable.facet"); function layout() internal pure returns (Layout storage l) { bytes32 slot = STORAGE_SLOT; assembly { l.slot := slot } } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
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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.