ERC-721
Overview
Max Total Supply
0 WKND
Holders
100
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Minimal Proxy Contract for 0xe019ff8033d9c761985a3ee1fa5d97cc9cf6d5c0
Contract Name:
ERC721SingleEdition
Compiler Version
v0.8.10+commit.fc410830
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.10; import "../utils/Ownable.sol"; import "../metadata/interfaces/IMetadataRenderer.sol"; import "../metadata/interfaces/IEditionsMetadataRenderer.sol"; import "./interfaces/IEditionCollection.sol"; import "./ERC721MinimizedBase.sol"; import "../tokenManager/interfaces/IPostTransfer.sol"; import "../utils/ERC721/ERC721Upgradeable.sol"; import "./interfaces/IERC721EditionMint.sol"; /** * @title ERC721 Single Edition * @author [email protected], [email protected] * @dev Single Edition Per Collection */ contract ERC721SingleEdition is IERC721EditionMint, IEditionCollection, ERC721MinimizedBase, ERC721Upgradeable { using EnumerableSet for EnumerableSet.AddressSet; /** * @dev Contract metadata */ string public contractURI; /** * @dev Keeps track of current token ID in supply */ uint256 private _currentId; /** * @dev Generates metadata for contract and token */ address private _metadataRendererAddress; /** * @notice Total size of edition that can be minted */ uint256 public size; /** * @dev Emitted when edition is created * @param size Edition size * @param editionTokenManager Token manager for edition */ event EditionCreated(uint256 indexed size, address indexed editionTokenManager); /** * @param creator Creator/owner of contract * @param defaultRoyalty Default royalty object for contract (optional) * @param _defaultTokenManager Default token manager for contract (optional) * @param _contractURI Contract metadata * @param _name Name of token edition * @param _symbol Symbol of the token edition * @param _editionInfo Edition info * @param _size Edition size * @param metadataRendererAddress Contract returning metadata for each edition * @param trustedForwarder Trusted minimal forwarder * @param initialMinter Initial minter to register */ function initialize( address creator, IRoyaltyManager.Royalty memory defaultRoyalty, address _defaultTokenManager, string memory _contractURI, string memory _name, string memory _symbol, bytes memory _editionInfo, uint256 _size, address metadataRendererAddress, address trustedForwarder, address initialMinter ) external initializer nonReentrant { __ERC721MinimizedBase_initialize(creator, defaultRoyalty, _defaultTokenManager); __ERC721_init(_name, _symbol); __ERC2771ContextUpgradeable__init__(trustedForwarder); size = _size; _metadataRendererAddress = metadataRendererAddress; IMetadataRenderer(metadataRendererAddress).initializeMetadata(_editionInfo); _minters.add(initialMinter); _currentId = 1; contractURI = _contractURI; emit EditionCreated(_size, _defaultTokenManager); } /** * @dev See {IERC721EditionMint-mintOneToRecipient} */ function mintOneToRecipient(uint256 editionId, address recipient) external onlyMinter nonReentrant returns (uint256) { require(_mintFrozen == 0, "Mint frozen"); require(_editionExists(editionId), "Edition doesn't exist"); return _mintEditionsToOne(recipient, 1); } /** * @dev See {IERC721EditionMint-mintAmountToRecipient} */ function mintAmountToRecipient( uint256 editionId, address recipient, uint256 amount ) external onlyMinter nonReentrant returns (uint256) { require(_mintFrozen == 0, "Mint frozen"); require(_editionExists(editionId), "Edition doesn't exist"); return _mintEditionsToOne(recipient, amount); } /** * @dev See {IERC721EditionMint-mintOneToRecipients} */ function mintOneToRecipients(uint256 editionId, address[] memory recipients) external onlyMinter nonReentrant returns (uint256) { require(_mintFrozen == 0, "Mint frozen"); require(_editionExists(editionId), "Edition doesn't exist"); return _mintEditions(recipients, 1); } /** * @dev See {IERC721EditionMint-mintAmountToRecipients} */ function mintAmountToRecipients( uint256 editionId, address[] memory recipients, uint256 amount ) external onlyMinter nonReentrant returns (uint256) { require(_mintFrozen == 0, "Mint frozen"); require(_editionExists(editionId), "Edition doesn't exist"); return _mintEditions(recipients, amount); } /** * @dev See {IEditionCollection-getEditionId} */ function getEditionId(uint256 tokenId) external view returns (uint256) { require(_exists(tokenId), "Token Id doesn't exist"); return 0; } /** * @dev See {IEditionCollection-getEditionDetails} */ function getEditionDetails(uint256 editionId) external view returns (EditionDetails memory) { require(_editionExists(editionId), "Edition doesn't exist"); return _getEditionDetails(); } /** * @dev See {IEditionCollection-getEditionsDetailsAndUri} */ function getEditionsDetailsAndUri(uint256[] calldata editionIds) external view returns (EditionDetails[] memory, string[] memory) { require(editionIds.length == 1, "One possible edition id"); EditionDetails[] memory editionsDetails = new EditionDetails[](1); string[] memory uris = new string[](1); // expected to be 0, validated in editionURI call uint256 editionId = editionIds[0]; uris[0] = editionURI(editionId); editionsDetails[0] = _getEditionDetails(); return (editionsDetails, uris); } /** * @dev See {IERC721-transferFrom}. Overrides default behaviour to check associated tokenManager. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override nonReentrant { ERC721Upgradeable.transferFrom(from, to, tokenId); address _manager = defaultManager; if (_manager != address(0) && IERC165Upgradeable(_manager).supportsInterface(type(IPostTransfer).interfaceId)) { IPostTransfer(_manager).postTransferFrom(_msgSender(), from, to, tokenId); } } /** * @dev See {IERC721-safeTransferFrom}. Overrides default behaviour to check associated tokenManager. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory data ) public virtual override nonReentrant { ERC721Upgradeable.safeTransferFrom(from, to, tokenId, data); address _manager = defaultManager; if (_manager != address(0) && IERC165Upgradeable(_manager).supportsInterface(type(IPostTransfer).interfaceId)) { IPostTransfer(_manager).postSafeTransferFrom(_msgSender(), from, to, tokenId, data); } } /** * @dev Conforms to ERC-2981. * @param // Token id * @param _salePrice Sale price of token */ function royaltyInfo( uint256, /* _tokenId */ uint256 _salePrice ) public view virtual override returns (address receiver, uint256 royaltyAmount) { return ERC721MinimizedBase.royaltyInfo(0, _salePrice); } /** * @dev Get URI for given edition id * @param editionId edition id to get uri for * @return base64-encoded json metadata object */ function editionURI(uint256 editionId) public view returns (string memory) { require(_editionExists(editionId), "Edition doesn't exist"); return IEditionsMetadataRenderer(_metadataRendererAddress).editionURI(editionId); } /** * @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"); return IMetadataRenderer(_metadataRendererAddress).tokenURI(tokenId); } /** * @dev Used to get token manager of token id * @param tokenId ID of the token */ function tokenManagerByTokenId(uint256 tokenId) public view returns (address) { return tokenManager(tokenId); } /** * @dev Private function to mint without any access checks. Called by the public edition minting functions. * @param recipients Recipients of newly minted tokens * @param _amount Amount minted to each recipient */ function _mintEditions(address[] memory recipients, uint256 _amount) internal returns (uint256) { uint256 recipientsLength = recipients.length; uint256 tempCurrent = _currentId; uint256 endAt = tempCurrent + (recipientsLength * _amount) - 1; require(size == 0 || endAt <= size, "Sold out"); for (uint256 i = 0; i < recipientsLength; i++) { for (uint256 j = 0; j < _amount; j++) { _mint(recipients[i], tempCurrent); tempCurrent += 1; } } _currentId = tempCurrent; return _currentId; } /** * @dev Private function to mint without any access checks. Called by the public edition minting functions. * @param recipient Recipient of newly minted token * @param _amount Amount minted to recipient */ function _mintEditionsToOne(address recipient, uint256 _amount) internal returns (uint256) { uint256 tempCurrent = _currentId; uint256 endAt = tempCurrent + _amount - 1; require(size == 0 || endAt <= size, "Sold out"); for (uint256 j = 0; j < _amount; j++) { _mint(recipient, tempCurrent); tempCurrent += 1; } _currentId = tempCurrent; return _currentId; } /** * @dev Used for meta-transactions */ function _msgSender() internal view override(ERC721MinimizedBase, ContextUpgradeable) returns (address sender) { return ERC2771ContextUpgradeable._msgSender(); } /** * @dev Used for meta-transactions */ function _msgData() internal view override(ERC721MinimizedBase, ContextUpgradeable) returns (bytes calldata) { return ERC2771ContextUpgradeable._msgData(); } /** * @dev Returns whether `editionId` exists. */ function _editionExists(uint256 editionId) internal pure returns (bool) { return editionId == 0; } /** * @dev Get edition details */ function _getEditionDetails() private view returns (EditionDetails memory) { return EditionDetails(this.name(), size, _currentId - 1, 1); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity 0.8.10; import "@openzeppelin/contracts/utils/Context.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. */ /* solhint-disable */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _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); } }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.10; /** * @dev Used to interface with core of EditionsMetadataRenderer * @author Zora, [email protected] */ interface IMetadataRenderer { /** * @dev Store metadata for an edition * @param data Metadata */ function initializeMetadata(bytes memory data) external; /** * @dev Get uri for token * @param tokenId ID of token to get uri for */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.10; /** * @dev Used to interface with EditionsMetadataRenderer * @author [email protected], [email protected] */ interface IEditionsMetadataRenderer { /** * @dev Token edition info * @param name Edition name * @param description Edition description * @param imageUrl Edition image url * @param animationUrl Edition animation url * @param externalUrl Edition external url * @param attributes Edition attributes */ struct TokenEditionInfo { string name; string description; string imageUrl; string animationUrl; string externalUrl; string attributes; } /** * @dev Updates name on edition. Managed by token manager if existent * @param editionsAddress Address of collection that edition is on * @param editionId ID of edition to update * @param name New name of edition */ function updateName( address editionsAddress, uint256 editionId, string calldata name ) external; /** * @dev Updates description on edition. Managed by token manager if existent * @param editionsAddress Address of collection that edition is on * @param editionId ID of edition to update * @param description New description of edition */ function updateDescription( address editionsAddress, uint256 editionId, string calldata description ) external; /** * @dev Updates imageUrl on edition. Managed by token manager if existent * @param editionsAddress Address of collection that edition is on * @param editionId ID of edition to update * @param imageUrl New imageUrl of edition */ function updateImageUrl( address editionsAddress, uint256 editionId, string calldata imageUrl ) external; /** * @dev Updates animationUrl on edition. Managed by token manager if existent * @param editionsAddress Address of collection that edition is on * @param editionId ID of edition to update * @param animationUrl New animationUrl of edition */ function updateAnimationUrl( address editionsAddress, uint256 editionId, string calldata animationUrl ) external; /** * @dev Updates externalUrl on edition. Managed by token manager if existent * @param editionsAddress Address of collection that edition is on * @param editionId ID of edition to update * @param externalUrl New externalUrl of edition */ function updateExternalUrl( address editionsAddress, uint256 editionId, string calldata externalUrl ) external; /** * @dev Updates attributes on edition. Managed by token manager if existent * @param editionsAddress Address of collection that edition is on * @param editionId ID of edition to update * @param attributes New attributes of edition */ function updateAttributes( address editionsAddress, uint256 editionId, string calldata attributes ) external; /** * @dev Get an edition's uri. HAS to be called by collection * @param editionId Edition's id to get uri for */ function editionURI(uint256 editionId) external view returns (string memory); /** * @dev Get an edition's info. * @param editionsAddress Address of collection that edition is on * @param editionsId Edition's id to get info for */ function editionInfo(address editionsAddress, uint256 editionsId) external view returns (TokenEditionInfo memory); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.10; /** * @dev Interfaces with the details of editions on collections * @author [email protected], [email protected] */ interface IEditionCollection { /** * @dev Edition details * @param name Edition name * @param size Edition size * @param supply Total number of tokens minted on edition * @param initialTokenId Token id of first token minted in edition */ struct EditionDetails { string name; uint256 size; uint256 supply; uint256 initialTokenId; } /** * @dev Get the edition a token belongs to * @param tokenId The token id of the token */ function getEditionId(uint256 tokenId) external view returns (uint256); /** * @dev Get an edition's details * @param editionId Edition id */ function getEditionDetails(uint256 editionId) external view returns (EditionDetails memory); /** * @dev Get the details and uris of a number of editions * @param editionIds List of editions to get info for */ function getEditionsDetailsAndUri(uint256[] calldata editionIds) external view returns (EditionDetails[] memory, string[] memory uris); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.10; import "../royaltyManager/interfaces/IRoyaltyManager.sol"; import "../tokenManager/interfaces/ITokenManager.sol"; import "../utils/Ownable.sol"; import "../utils/ERC2981/IERC2981Upgradeable.sol"; import "../metatx/ERC2771ContextUpgradeable.sol"; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import "../utils/ERC165/ERC165CheckerUpgradeable.sol"; /** * @title Minimized Base ERC721 * @author [email protected] * @dev Core piece of Highlight NFT contracts (V2), branch for ERC721SingleEdition */ abstract contract ERC721MinimizedBase is OwnableUpgradeable, IERC2981Upgradeable, ERC2771ContextUpgradeable, ReentrancyGuardUpgradeable { using EnumerableSet for EnumerableSet.AddressSet; using ERC165CheckerUpgradeable for address; /** * @dev Set of minters allowed to mint on contract */ EnumerableSet.AddressSet internal _minters; /** * @dev Global token/edition manager default */ address public defaultManager; /** * @dev Default royalty for entire contract */ IRoyaltyManager.Royalty internal _defaultRoyalty; /** * @dev Royalty manager - optional contract that defines the conditions around setting royalties */ address public royaltyManager; /** * @dev Freezes minting on smart contract forever */ uint8 internal _mintFrozen; /** * @dev Emitted when minter is registered or unregistered * @param minter Minter that was changed * @param registered True if the minter was registered, false if unregistered */ event MinterRegistrationChanged(address indexed minter, bool indexed registered); /** * @dev Emitted when default token manager changed * @param newDefaultTokenManager New default token manager. Zero address if old one was removed */ event DefaultTokenManagerChanged(address indexed newDefaultTokenManager); /** * @dev Emitted when default royalty is set * @param recipientAddress Royalty recipient * @param royaltyPercentageBPS Percentage of sale (in basis points) owed to royalty recipient */ event DefaultRoyaltySet(address indexed recipientAddress, uint16 indexed royaltyPercentageBPS); /** * @dev Emitted when royalty manager is updated * @param newRoyaltyManager New royalty manager. Zero address if old one was removed */ event RoyaltyManagerChanged(address indexed newRoyaltyManager); /** * @dev Emitted when mints are frozen permanently */ event MintsFrozen(); /** * @dev Restricts calls to minters */ modifier onlyMinter() { require(_minters.contains(_msgSender()), "Not minter"); _; } /** * @dev Restricts calls if input royalty bps is over 10000 */ modifier royaltyValid(uint16 _royaltyBPS) { require(_royaltyBPS <= 10000, "Over BPS limit"); _; } /** * @dev Registers a minter * @param minter New minter */ function registerMinter(address minter) external onlyOwner nonReentrant { require(_minters.add(minter), "Already a minter"); emit MinterRegistrationChanged(minter, true); } /** * @dev Unregisters a minter * @param minter Minter to unregister */ function unregisterMinter(address minter) external onlyOwner nonReentrant { require(_minters.remove(minter), "Not yet minter"); emit MinterRegistrationChanged(minter, false); } /** * @dev Set default token manager if current token manager allows it * @param _defaultTokenManager New default token manager */ function setDefaultTokenManager(address _defaultTokenManager) external nonReentrant { require(_isValidTokenManager(_defaultTokenManager), "Invalid TM"); address msgSender = _msgSender(); address currentTokenManager = defaultManager; if (currentTokenManager == address(0)) { require(msgSender == owner(), "Not owner"); } else { require(ITokenManager(currentTokenManager).canSwap(msgSender, 0, _defaultTokenManager), "Can't swap"); } defaultManager = _defaultTokenManager; emit DefaultTokenManagerChanged(_defaultTokenManager); } /** * @dev Removes default token manager if current token manager allows it */ function removeDefaultTokenManager() external nonReentrant { address msgSender = _msgSender(); address currentTokenManager = defaultManager; require(currentTokenManager != address(0), "Default TM not existent"); require(ITokenManager(currentTokenManager).canRemoveItself(msgSender, 0), "Can't remove"); defaultManager = address(0); emit DefaultTokenManagerChanged(address(0)); } /** * @dev Sets default royalty if royalty manager allows it * @param _royalty New default royalty */ function setDefaultRoyalty(IRoyaltyManager.Royalty calldata _royalty) external nonReentrant royaltyValid(_royalty.royaltyPercentageBPS) { address msgSender = _msgSender(); address _royaltyManager = royaltyManager; if (_royaltyManager == address(0)) { require(msgSender == owner(), "Not owner"); } else { require(IRoyaltyManager(_royaltyManager).canSetDefaultRoyalty(_royalty, msgSender), "Can't set"); } _defaultRoyalty = _royalty; emit DefaultRoyaltySet(_royalty.recipientAddress, _royalty.royaltyPercentageBPS); } /** * @dev Sets royalty manager if current one allows it * @param _royaltyManager New royalty manager */ function setRoyaltyManager(address _royaltyManager) external nonReentrant { require(_isValidRoyaltyManager(_royaltyManager), "Invalid RM"); address msgSender = _msgSender(); address currentRoyaltyManager = royaltyManager; if (currentRoyaltyManager == address(0)) { require(msgSender == owner(), "Not owner"); } else { require(IRoyaltyManager(currentRoyaltyManager).canSwap(_royaltyManager, msgSender), "Can't swap"); } royaltyManager = _royaltyManager; emit RoyaltyManagerChanged(_royaltyManager); } /** * @dev Removes royalty manager if current one allows it */ function removeRoyaltyManager() external nonReentrant { address msgSender = _msgSender(); address currentRoyaltyManager = royaltyManager; require(currentRoyaltyManager != address(0), "RM non-existent"); require(IRoyaltyManager(currentRoyaltyManager).canRemoveItself(msgSender), "Can't remove"); royaltyManager = address(0); emit RoyaltyManagerChanged(address(0)); } /** * @dev Freeze mints on contract forever */ function freezeMints() external onlyOwner nonReentrant { _mintFrozen = 1; emit MintsFrozen(); } /** * @dev Conforms to ERC-2981. Editions should overwrite to return royalty for entire edition * @param // Edition id * @param _salePrice Sale price of token */ function royaltyInfo( uint256, /* _tokenGroupingId */ uint256 _salePrice ) public view virtual override returns (address receiver, uint256 royaltyAmount) { IRoyaltyManager.Royalty memory royalty = _defaultRoyalty; receiver = royalty.recipientAddress; royaltyAmount = (_salePrice * uint256(royalty.royaltyPercentageBPS)) / 10000; } /** * @dev Returns the token manager for the id passed in. * @param // Token ID or Edition ID for Editions implementing contracts */ function tokenManager( uint256 /* id */ ) public view returns (address manager) { return defaultManager; } /** * @dev Initializes the contract, setting the creator as the initial owner. * @param creator Contract creator * @param defaultRoyalty Default royalty for the contract * @param _defaultTokenManager Default token manager for the contract */ function __ERC721MinimizedBase_initialize( address creator, IRoyaltyManager.Royalty memory defaultRoyalty, address _defaultTokenManager ) internal onlyInitializing royaltyValid(defaultRoyalty.royaltyPercentageBPS) { __Ownable_init(); __ReentrancyGuard_init(); _transferOwnership(creator); _defaultRoyalty = defaultRoyalty; defaultManager = _defaultTokenManager; } /** * @dev Returns true if address is a valid tokenManager * @param _tokenManager Token manager being checked */ function _isValidTokenManager(address _tokenManager) internal view returns (bool) { return _tokenManager.supportsInterface(type(ITokenManager).interfaceId); } /** * @dev Returns true if address is a valid royaltyManager * @param _royaltyManager Royalty manager being checked */ function _isValidRoyaltyManager(address _royaltyManager) internal view returns (bool) { return _royaltyManager.supportsInterface(type(IRoyaltyManager).interfaceId); } /** * @dev Used for meta-transactions */ function _msgSender() internal view virtual override(ContextUpgradeable, ERC2771ContextUpgradeable) returns (address sender) { return ERC2771ContextUpgradeable._msgSender(); } /** * @dev Used for meta-transactions */ function _msgData() internal view virtual override(ContextUpgradeable, ERC2771ContextUpgradeable) returns (bytes calldata) { return ERC2771ContextUpgradeable._msgData(); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.10; /** * @author [email protected] * @dev If token managers implement this, transfer actions will call * postSafeTransferFrom or postTransferFrom on the token manager. */ interface IPostTransfer { /** * @dev Hook called by community after safe transfers, if token manager of transferred token implements this * interface. * @param operator Operator transferring tokens * @param from Token(s) sender * @param to Token(s) recipient * @param id Transferred token's id * @param data Arbitrary data */ function postSafeTransferFrom( address operator, address from, address to, uint256 id, bytes memory data ) external; /** * @dev Hook called by community after transfers, if token manager of transferred token implements this interface. * @param operator Operator transferring tokens * @param from Token(s) sender * @param to Token(s) recipient * @param id Transferred token's id */ function postTransferFrom( address operator, address from, address to, uint256 id ) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol) pragma solidity 0.8.10; import "./IERC721Upgradeable.sol"; import "./IERC721ReceiverUpgradeable.sol"; import "./IERC721MetadataUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol"; import "../ERC165/ERC165Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/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}. */ /* solhint-disable */ 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 = _owners[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 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 _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { 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"); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @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); // Clear approvals delete _tokenApprovals[tokenId]; _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @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"); // Clear approvals from the previous owner delete _tokenApprovals[tokenId]; _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @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 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: UNLICENSED pragma solidity 0.8.10; /** * @dev Mint interface on editions contracts * @author [email protected] */ interface IERC721EditionMint { /** * @dev Mints one NFT to one recipient * @param editionId Edition to mint the NFT on * @param recipient Recipient of minted NFT */ function mintOneToRecipient(uint256 editionId, address recipient) external returns (uint256); /** * @dev Mints an amount of NFTs to one recipient * @param editionId Edition to mint the NFTs on * @param recipient Recipient of minted NFTs * @param amount Amount of NFTs minted */ function mintAmountToRecipient( uint256 editionId, address recipient, uint256 amount ) external returns (uint256); /** * @dev Mints one NFT each to a number of recipients * @param editionId Edition to mint the NFTs on * @param recipients Recipients of minted NFTs */ function mintOneToRecipients(uint256 editionId, address[] memory recipients) external returns (uint256); /** * @dev Mints an amount of NFTs each to a number of recipients * @param editionId Edition to mint the NFTs on * @param recipients Recipients of minted NFTs * @param amount Amount of NFTs minted per recipient */ function mintAmountToRecipients( uint256 editionId, address[] memory recipients, uint256 amount ) external returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.10; /** * @title IRoyaltyManager * @author [email protected] * @dev Enables interfacing with custom royalty managers that define conditions on setting royalties for NFT contracts */ interface IRoyaltyManager { /** * @dev Struct containing values required to adhere to ERC-2981 * @param recipientAddress Royalty recipient - can be EOA, royalty splitter contract, etc. * @param royaltyPercentageBPS Royalty cut, in basis points */ struct Royalty { address recipientAddress; uint16 royaltyPercentageBPS; } /** * @dev Defines conditions around being able to swap royalty manager for another one * @param newRoyaltyManager New royalty manager being swapped in * @param sender msg sender */ function canSwap(address newRoyaltyManager, address sender) external view returns (bool); /** * @dev Defines conditions around being able to remove current royalty manager * @param sender msg sender */ function canRemoveItself(address sender) external view returns (bool); /** * @dev Defines conditions around being able to set granular royalty (per token or per edition) * @param id Edition / token ID whose royalty is being set * @param royalty Royalty being set * @param sender msg sender */ function canSetGranularRoyalty( uint256 id, Royalty calldata royalty, address sender ) external view returns (bool); /** * @dev Defines conditions around being able to set default royalty * @param royalty Royalty being set * @param sender msg sender */ function canSetDefaultRoyalty(Royalty calldata royalty, address sender) external view returns (bool); }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.10; /** * @title ITokenManager * @author [email protected] * @dev Enables interfacing with custom token managers */ interface ITokenManager { /** * @dev Returns whether metadata updater is allowed to update * @param sender Updater * @param id Token/edition who's uri is being updated * If id is 0, implementation should decide behaviour for base uri update * @param newData Token's new uri if called by general contract, and any metadata field if called by editions * @return If invocation can update metadata */ function canUpdateMetadata( address sender, uint256 id, bytes calldata newData ) external view returns (bool); /** * @dev Returns whether token manager can be swapped for another one by invocator * @dev Default token manager implementations should ignore id * @param sender Swapper * @param id Token grouping id (token id or edition id) * @param newTokenManager New token manager being swapped to * @return If invocation can swap token managers */ function canSwap( address sender, uint256 id, address newTokenManager ) external view returns (bool); /** * @dev Returns whether token manager can be removed * @dev Default token manager implementations should ignore id * @param sender Swapper * @param id Token grouping id (token id or edition id) * @return If invocation can remove token manager */ function canRemoveItself(address sender, uint256 id) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981Upgradeable.sol) pragma solidity 0.8.10; import "../ERC165/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 v4.5.0) (metatx/ERC2771Context.sol) pragma solidity 0.8.10; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; /** * @dev Context variant with ERC2771 support. * Openzeppelin contract slightly modified by ishan@ highlight.xyz to be upgradeable. */ abstract contract ERC2771ContextUpgradeable is Initializable { address private _trustedForwarder; /** * @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; function isTrustedForwarder(address forwarder) public view virtual returns (bool) { return forwarder == _trustedForwarder; } function __ERC2771ContextUpgradeable__init__(address trustedForwarder) internal onlyInitializing { _trustedForwarder = trustedForwarder; } function _msgSender() internal view virtual returns (address sender) { if (isTrustedForwarder(msg.sender)) { // The assembly code is more direct than the Solidity version using `abi.decode`. /* solhint-disable no-inline-assembly */ assembly { sender := shr(96, calldataload(sub(calldatasize(), 20))) } /* solhint-enable no-inline-assembly */ } else { return msg.sender; } } function _msgData() internal view virtual returns (bytes calldata) { if (isTrustedForwarder(msg.sender)) { return msg.data[:msg.data.length - 20]; } else { return msg.data; } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// 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 v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @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 v4.4.1 (utils/introspection/ERC165Checker.sol) pragma solidity 0.8.10; import "./IERC165Upgradeable.sol"; /** * @dev Library used to query support of an interface declared via {IERC165}. * * Note that these functions return the actual result of the query: they do not * `revert` if an interface is not supported. It is up to the caller to decide * what to do in these cases. */ /* solhint-disable */ library ERC165CheckerUpgradeable { // As per the EIP-165 spec, no interface should ever match 0xffffffff bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff; /** * @dev Returns true if `account` supports the {IERC165} interface, */ function supportsERC165(address account) internal view returns (bool) { // Any contract that implements ERC165 must explicitly indicate support of // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid return supportsERC165InterfaceUnchecked(account, type(IERC165Upgradeable).interfaceId) && !supportsERC165InterfaceUnchecked(account, _INTERFACE_ID_INVALID); } /** * @dev Returns true if `account` supports the interface defined by * `interfaceId`. Support for {IERC165} itself is queried automatically. * * See {IERC165-supportsInterface}. */ function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) { // query support of both ERC165 as per the spec and support of _interfaceId return supportsERC165(account) && supportsERC165InterfaceUnchecked(account, interfaceId); } /** * @dev Returns a boolean array where each value corresponds to the * interfaces passed in and whether they're supported or not. This allows * you to batch check interfaces for a contract where your expectation * is that some interfaces may not be supported. * * See {IERC165-supportsInterface}. * * _Available since v3.4._ */ function getSupportedInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool[] memory) { // an array of booleans corresponding to interfaceIds and whether they're supported or not bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length); // query support of ERC165 itself if (supportsERC165(account)) { // query support of each interface in interfaceIds for (uint256 i = 0; i < interfaceIds.length; i++) { interfaceIdsSupported[i] = supportsERC165InterfaceUnchecked(account, interfaceIds[i]); } } return interfaceIdsSupported; } /** * @dev Returns true if `account` supports all the interfaces defined in * `interfaceIds`. Support for {IERC165} itself is queried automatically. * * Batch-querying can lead to gas savings by skipping repeated checks for * {IERC165} support. * * See {IERC165-supportsInterface}. */ function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) { // query support of ERC165 itself if (!supportsERC165(account)) { return false; } // query support of each interface in _interfaceIds for (uint256 i = 0; i < interfaceIds.length; i++) { if (!supportsERC165InterfaceUnchecked(account, interfaceIds[i])) { return false; } } // all interfaces supported return true; } /** * @notice Query if a contract implements an interface, does not check ERC165 support * @param account The address of the contract to query for support of an interface * @param interfaceId The interface identifier, as specified in ERC-165 * @return true if the contract at account indicates support of the interface with * identifier interfaceId, false otherwise * @dev Assumes that account contains a contract that supports ERC165, otherwise * the behavior of this method is undefined. This precondition can be checked * with {supportsERC165}. * Interface identification is specified in ERC-165. */ function supportsERC165InterfaceUnchecked(address account, bytes4 interfaceId) internal view returns (bool) { // prepare call bytes memory encodedParams = abi.encodeWithSelector(IERC165Upgradeable.supportsInterface.selector, interfaceId); // perform static call bool success; uint256 returnSize; uint256 returnValue; assembly { success := staticcall(30000, account, add(encodedParams, 0x20), mload(encodedParams), 0x00, 0x20) returnSize := returndatasize() returnValue := mload(0x00) } return success && returnSize >= 0x20 && returnValue > 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity 0.8.10; /** * @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}. */ /* solhint-disable */ 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 v4.7.0) (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. Equivalent to `reinitializer(1)`. */ 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. * * `initializer` is equivalent to `reinitializer(1)`, so 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. * * 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. */ 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. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (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 functionCall(target, data, "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"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(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) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason 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 { // 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 v4.7.0) (token/ERC721/IERC721.sol) pragma solidity 0.8.10; import "../ERC165/IERC165Upgradeable.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ /* solhint-disable */ 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: 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity 0.8.10; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ /* solhint-disable */ 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 v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity 0.8.10; import "./IERC721Upgradeable.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ /* solhint-disable */ 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 v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library StringsUpgradeable { bytes16 private constant _HEX_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) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @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] = _HEX_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 0.8.10; import "./IERC165Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/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. */ /* solhint-disable */ 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; }
{ "metadata": { "bytecodeHash": "none" }, "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.