ERC-721
Overview
Max Total Supply
0 PRTCL
Holders
61
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
0 PRTCLLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
PRTCLCollections721V1
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 400 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: LGPL-3.0-only pragma solidity 0.8.17; import "@openzeppelin/contracts/access/AccessControl.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/utils/cryptography/EIP712.sol"; import "operator-filter-registry/src/RevokableDefaultOperatorFilterer.sol"; import "./interfaces/IPRTCLCollections721V1.sol"; import "./interfaces/IRandomizerV1.sol"; import "./governance/PRTCLCoreERC721Votes.sol"; /// @title Core ERC721 contract for multiple collections - Part of the Particle Protocol V1.1 /// @author Particle Collection - valdi.eth /// @notice Manages all collections tokens and voting rights /// @dev Exposes all public functions and events needed by the Particle Collection's smart contract suite version 1 /// @dev Adheres to the ERC721 standard, ERC721MultiCollection extension and Manifold for secondary royalties /// @dev Integrates with the OpenSea's Operator Filter Registry to allow for filtering of token transfers: https://github.com/ProjectOpenSea/operator-filter-registry /// @dev Based on Artblock's GenArt721CoreV3 contract design: https://github.com/ArtBlocks/artblocks-contracts/blob/main/contracts/GenArt721CoreV3.sol /// Modifications to the original design: /// - AccessControl extension from OZ /// - Voting power extension modified from OZ's Votes contract /// - MultiCollection support /// - Collection state management modified to accomodate sales /// - Added coordinate system by modyifing the Randomization design /// - Added per collection, multi token burning /// @dev The PRTCLCollections721V1 contract contains the following privileged access for the following functions: /// - The MINTER_ROLE can mint a new token for any collection using mint(). /// - The GOVERNOR_ROLE can mark a collection as sold using markCollectionSold(). /// - The GOVERNOR_ROLE can burn all tokens of any owner for a specific collectionId using burn(). /// - The DEFAULT_ADMIN_ROLE can update the base URI using updateBaseURI(). /// - The DEFAULT_ADMIN_ROLE can disable new collections from being added using forbidNewCollections(). /// - The DEFAULT_ADMIN_ROLE can add a new collection using addCollection(). /// - The DEFAULT_ADMIN_ROLE can change whether a collection is active using toggleCollectionIsActive(). /// - The DEFAULT_ADMIN_ROLE can update the collection data using updateCollectionData(). /// - The DEFAULT_ADMIN_ROLE can update the collection financials using updateCollectionRoyalties(), updateCollectionPrimarySplit(), or updateRoyaltiesAddresses(). /// - The DEFAULT_ADMIN_ROLE can request collection seed after the time criteria have passed using requestCollectionSeeds(). /// - The DEFAULT_ADMIN_ROLE can update the randomizer contract using updateRandomizer(). /// - The DEFAULT_ADMIN_ROLE can mint a new token for any collection using mint() regardless of the collection status as long as the particle does not exceed the maximum. /// - The DEFAULT_ADMIN_ROLE can update the operator filter registry admin using updateOperatorFilterRegistryAdmin(). /// @custom:security-contact [email protected] contract PRTCLCollections721V1 is AccessControl, EIP712, PRTCLCoreERC721Votes, IPRTCLCollections721V1, RevokableDefaultOperatorFilterer, ReentrancyGuard { bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE"); bytes32 public constant GOVERNOR_ROLE = keccak256("GOVERNOR_ROLE"); uint256 constant MAX_BPS = 10000; // 10_000 BPS = 100% uint256 constant DEFAULT_ARTIST_ROYALTY_BPS = 500; // 5% uint256 constant DEFAULT_FJM_ROYALTY_BPS = 250; // 2,5% uint256 constant DEFAULT_DAO_ROYALTY_BPS = 250; // 2,5% uint256 constant DEFAULT_ARTIST_PRIMARY_BPS = 0; // 0% uint256 constant DEFAULT_FJM_PRIMARY_BPS = 10000; // 10_000 BPS = 100% uint256 constant DEFAULT_DAO_PRIMARY_BPS = 0; // 0% /// 4JM wallet address address payable public FJMAddress; /// Particle Collection DAO wallet address address payable public DAOAddress; /// Current randomizer contract IRandomizerV1 public randomizerContract; string public baseURI; struct Collection { // Number of particles in the collection uint24 nParticles; // Max number of particles in the collection uint24 maxParticles; bool active; // The original artwork has been sold through an accepted bid by the collection owners // Only editable by the governor contract, thus by a governance vote bool sold; string name; // Seeds to randomize token coordinates. Seeds are set after minting, // potentially altering the coordinate assignment of all tokens. // Only Randomizer contract can assign seeds. // E.g. Token id 1 could map to coordinate 4321 uint24[] seeds; // Timestamp after which setting seeds (and thus revealing metadata) is allowed. // Block number, set to 256 blocks after last particle mint, to prevent speculation when setting seeds (look-ahead period of 8 epochs) uint256 setSeedsAfterBlock; } mapping(uint256 => Collection) collections; /// struct containing collection financial information struct CollectionFinance { address payable artistAddress; uint256 artistRoyaltyBPS; uint256 FJMRoyaltyBPS; uint256 DAORoyaltyBPS; uint256 artistPrimaryBPS; uint256 FJMPrimaryBPS; uint256 DAOPrimaryBPS; } // Collection financials mapping mapping(uint256 => CollectionFinance) collectionIdToFinancials; // Address that can modify the operator filter registry address public operatorFilterRegistryAdmin; modifier onlyNonZeroAddress(address _address) { require(_address != address(0), "Must input non-zero address"); _; } modifier onlyNonEmptyString(string memory _string) { require(bytes(_string).length != 0, "Must input non-empty string"); _; } constructor( string memory _bURI, address _delegationSigner, address payable _FJMAddress, address payable _DAOAddress ) onlyNonEmptyString(_bURI) onlyNonZeroAddress(_delegationSigner) ERC721MultiCollection(1_000_000) ERC721("Particle", "PRTCL") EIP712("Particle", "1") PRTCLCoreERC721Votes(_delegationSigner) ReentrancyGuard() { _grantRole(DEFAULT_ADMIN_ROLE, msg.sender); operatorFilterRegistryAdmin = msg.sender; baseURI = _bURI; updateRoyaltiesAddresses(_FJMAddress, _DAOAddress); } /** * @notice Updates base URI to `_newBaseURI`. * @param _newBaseURI New base URI. */ function updateBaseURI(string memory _newBaseURI) external onlyRole(DEFAULT_ADMIN_ROLE) onlyNonEmptyString(_newBaseURI) { baseURI = _newBaseURI; emit BaseURIUpdated(_newBaseURI); } /** * @notice Returns the base URI for all tokens. Used in tokenURI(). */ function _baseURI() internal view override returns (string memory) { return baseURI; } /** * @notice Updates delegation signer to `_newDelegationSigner`. * @param _newDelegationSigner New delegation signer. */ function updateDelegationSigner(address _newDelegationSigner) external onlyRole(DEFAULT_ADMIN_ROLE) { // Checks for non zero address _setDelegationSigner(_newDelegationSigner); } /** * @dev Updates the operator filter registry admin */ function updateOperatorFilterRegistryAdmin(address _newAdmin) external onlyRole(DEFAULT_ADMIN_ROLE) onlyNonZeroAddress(_newAdmin) { operatorFilterRegistryAdmin = _newAdmin; } /** * @dev Returns the address that can modify the operator filter registry. * Used by RevokableDefaultOperatorFilterer to allow modifications or revoking of filtering. */ function owner() public view override returns (address) { return operatorFilterRegistryAdmin; } /** * @notice Forever forbids new collections from being added to this contract. * Only callable by DEFAULT_ADMIN_ROLE. * Should only be used after a new version of this contract has been deployed. * Emits NewCollectionsForbidden event. */ function forbidNewCollections() external onlyRole(DEFAULT_ADMIN_ROLE) { _forbidNewCollections(); } /** * @notice Check if adding new collections is allowed on this contract. */ function newCollectionsAllowed() public view returns (bool) { return _newCollectionsAllowed(); } /** * @notice The collection can be sold if it has not been sold and is fully minted. */ function collectionCanBeSold(uint256 _collectionId) onlyValidCollectionId(_collectionId) external view returns (bool) { Collection memory collection = collections[_collectionId]; return !collection.sold && collection.nParticles == collection.maxParticles; } /** * @notice Proceeds for _tokens for a sale of `_salePrice`. */ function proceeds(uint256 _collectionId, uint256 _salePrice, uint256 _commission, uint256 _tokens) onlyValidCollectionId(_collectionId) external view returns (uint256) { // Multiply first to avoid rounding errors as much as possible return (_salePrice - _salePrice * _commission / 100) * _tokens / collections[_collectionId].maxParticles; } /** * @notice Mark collection as sold. * Only callable by GOVERNOR_ROLE, thus by a completed and accepted governance * proposal being executed. */ function markCollectionSold(uint256 _collectionId, address _buyer) external onlyRole(GOVERNOR_ROLE) onlyValidCollectionId(_collectionId) { Collection storage collection = collections[_collectionId]; if (collection.sold) { revert AlreadySold(); } collection.sold = true; emit CollectionSold(_collectionId, _buyer); } /** * @notice Gets royalty Basis Points (BPS) for tokens in collection ID `collectionId`. * @param collectionId Collection ID to be queried. * @return recipients Array of royalty payment recipients * @return bps Array of Basis Points (BPS) allocated to each recipient, * aligned by index. * @dev only returns recipients that have a non-zero BPS allocation */ function getRoyaltiesForCollection( uint256 collectionId ) public view onlyValidCollectionId(collectionId) returns (address payable[] memory recipients, uint256[] memory bps) { recipients = new address payable[](3); bps = new uint256[](3); CollectionFinance memory financials = collectionIdToFinancials[collectionId]; // calculate BPS = percentage * 100 uint256 artistBPS = financials.artistRoyaltyBPS; uint256 daoBPS = financials.DAORoyaltyBPS; uint256 fjmBPS = financials.FJMRoyaltyBPS; // populate arrays uint256 payeeCount; if (artistBPS > 0) { recipients[payeeCount] = financials.artistAddress; bps[payeeCount++] = artistBPS; } if (daoBPS > 0) { recipients[payeeCount] = DAOAddress; bps[payeeCount++] = daoBPS; } if (fjmBPS > 0) { recipients[payeeCount] = FJMAddress; bps[payeeCount++] = fjmBPS; } // trim arrays if necessary if (3 > payeeCount) { assembly { let decrease := sub(3, payeeCount) mstore(recipients, sub(mload(recipients), decrease)) mstore(bps, sub(mload(bps), decrease)) } } return (recipients, bps); } /** * @notice Gets royalty Basis Points (BPS) for token ID `tokenId`. * This conforms to the IManifold interface designated in the Royalty * Registry's RoyaltyEngineV1.sol contract. * ref: https://github.com/manifoldxyz/royalty-registry-solidity * @param tokenId Token ID to be queried. * @return recipients Array of royalty payment recipients * @return bps Array of Basis Points (BPS) allocated to each recipient, * aligned by index. * @dev only returns recipients that have a non-zero BPS allocation */ function getRoyalties( uint256 tokenId ) external view returns (address payable[] memory recipients, uint256[] memory bps) { if (!_exists(tokenId)) { revert InvalidTokenId(tokenId); } return getRoyaltiesForCollection(tokenIdToCollectionId(tokenId)); } /** * @notice Returns the address of the artist for a given collection ID. */ function collectionIdToArtistAddress( uint256 _collectionId ) external view onlyValidCollectionId(_collectionId) returns (address payable) { return collectionIdToFinancials[_collectionId].artistAddress; } /** * @notice Returns revenue split for primary sale of `_price` for collection `_collectionId`. * @dev Used by minter contract to determine how much to pay to each party. */ function getPrimaryRevenueSplits( uint256 _collectionId, uint256 _price ) external view onlyValidCollectionId(_collectionId) returns ( uint256 FJMRevenue_, address payable FJMAddress_, uint256 DAORevenue_, address payable DAOAddress_, uint256 artistRevenue_, address payable artistAddress_ ) { CollectionFinance memory financials = collectionIdToFinancials[ _collectionId ]; // BPS should first be divided by 100 to get the percentage, then by 100 to get the value in the corresponding currency FJMRevenue_ = (_price * financials.FJMPrimaryBPS) / MAX_BPS; artistRevenue_ = (_price * financials.artistPrimaryBPS) / MAX_BPS; DAORevenue_ = (_price * financials.DAOPrimaryBPS) / MAX_BPS; FJMAddress_ = FJMAddress; artistAddress_ = financials.artistAddress; DAOAddress_ = DAOAddress; } /** * @notice Returns collection data for collection `_collectionId`. */ function collectionData(uint256 _collectionId) external view onlyValidCollectionId(_collectionId) returns ( uint256 nParticles, uint256 maxParticles, bool active, string memory collectionName, bool sold, uint24[] memory seeds, uint256 setSeedsAfterBlock ) { Collection memory collection = collections[_collectionId]; nParticles = collection.nParticles; maxParticles = collection.maxParticles; active = collection.active; collectionName = collection.name; sold = collection.sold; seeds = collection.seeds; setSeedsAfterBlock = collection.setSeedsAfterBlock; } /** * @notice Returns the coordinate within the collection artwork for a given token ID. * @dev The coordinate is calculated based on the collection's seeds (set by the randomizer contract), and the token ID. */ function getCoordinate(uint256 _tokenId) external view returns (uint256) { // Get collection id, check if seeds have been set, calculate coordinate based on seeds Collection memory collection = collections[ tokenIdToCollectionId(_tokenId) ]; if (collection.seeds.length == 0) { revert CollectionNotRevealed(tokenIdToCollectionId(_tokenId)); } // p1 and p2 are primes above 1M, guaranteeing no collisions // Using another prime to shift, to avoid 0 or last token id always being the first element uint32 p1 = collection.seeds[0]; uint32 p2 = collection.seeds[1]; uint256 maxParticles = collection.maxParticles; return (_tokenId * p1 + p2) % maxParticles; } /** * @notice Adds new collection `_collectionName` by `_artistAddress`. * @param _collectionName Artwork (ERC-721 collection) name. * @param _numberOfParticles Artwork will be divided in these many particles. * @param _artistAddress Artist's address. * @dev token price stored on minter contract. Emits CollectionAdded event from ERC721MultiCollection. */ function addCollection( string memory _collectionName, uint24 _numberOfParticles, address payable _artistAddress ) external onlyRole(DEFAULT_ADMIN_ROLE) onlyNonZeroAddress(_artistAddress) onlyNonEmptyString(_collectionName) returns (uint256) { uint256 collectionId = _addCollection(_numberOfParticles); require(collectionId <= type(uint232).max, "Collection id > 232 bits"); collectionIdToFinancials[collectionId].artistAddress = _artistAddress; collectionIdToFinancials[collectionId].artistRoyaltyBPS = DEFAULT_ARTIST_ROYALTY_BPS; collectionIdToFinancials[collectionId].FJMRoyaltyBPS = DEFAULT_FJM_ROYALTY_BPS; collectionIdToFinancials[collectionId].DAORoyaltyBPS = DEFAULT_DAO_ROYALTY_BPS; // Primary sales revenue split collectionIdToFinancials[collectionId].artistPrimaryBPS = DEFAULT_ARTIST_PRIMARY_BPS; collectionIdToFinancials[collectionId].FJMPrimaryBPS = DEFAULT_FJM_PRIMARY_BPS; collectionIdToFinancials[collectionId].DAOPrimaryBPS = DEFAULT_DAO_PRIMARY_BPS; collections[collectionId].name = _collectionName; collections[collectionId].maxParticles = _numberOfParticles; return collectionId; } /** * @notice Toggles collection `_collectionId` as active/inactive. * @param _collectionId Collection ID to be toggled. */ function toggleCollectionIsActive(uint256 _collectionId) external onlyRole(DEFAULT_ADMIN_ROLE) onlyValidCollectionId(_collectionId) { collections[_collectionId].active = !collections[_collectionId].active; if (collections[_collectionId].active) { emit CollectionActive(_collectionId); } else { emit CollectionInactive(_collectionId); } } /** * @notice Updates a collection's data. * @param _collectionId Collection ID. * @param _artistAddress New artist address. * @param _collectionName New collection name. */ function updateCollectionData( uint256 _collectionId, address payable _artistAddress, string memory _collectionName ) external onlyValidCollectionId(_collectionId) onlyRole(DEFAULT_ADMIN_ROLE) onlyNonZeroAddress(_artistAddress) onlyNonEmptyString(_collectionName) { collections[_collectionId].name = _collectionName; collectionIdToFinancials[_collectionId].artistAddress = _artistAddress; emit CollectionDataUpdated(_collectionId); } /** * @notice Updates a collection's max particles. * @param _collectionId Collection ID. * @param _maxParticles New number of particles for collection. */ function updateCollectionMaxParticles( uint256 _collectionId, uint24 _maxParticles ) external onlyValidCollectionId(_collectionId) onlyRole(DEFAULT_ADMIN_ROLE) { require(_validCollectionSize(_maxParticles), "maxParticles has to be > 0 and <= 1M"); require(collections[_collectionId].nParticles == 0, "maxParticles can only be updated if no particles have been minted"); collections[_collectionId].maxParticles = _maxParticles; emit CollectionSizeUpdated(_collectionId, _maxParticles); } /** * @notice Updates collection's financials. * @param _collectionId Collection ID. * @param _artistRoyaltyBPS New artist fee percentage. * @param _FJMRoyaltyBPS New 4JM fee percentage. * @param _DAORoyaltyBPS New DAO fee percentage. */ function updateCollectionRoyalties( uint256 _collectionId, uint256 _artistRoyaltyBPS, uint256 _FJMRoyaltyBPS, uint256 _DAORoyaltyBPS ) external onlyValidCollectionId(_collectionId) onlyRole(DEFAULT_ADMIN_ROLE) { // 10_000 BPS = 100% // require the sum of all royalties to be less than or equal to MAX_BPS require(_artistRoyaltyBPS + _FJMRoyaltyBPS + _DAORoyaltyBPS <= MAX_BPS, "Royalties > 100%"); collectionIdToFinancials[_collectionId].artistRoyaltyBPS = _artistRoyaltyBPS; collectionIdToFinancials[_collectionId].FJMRoyaltyBPS = _FJMRoyaltyBPS; collectionIdToFinancials[_collectionId].DAORoyaltyBPS = _DAORoyaltyBPS; emit CollectionRoyaltiesUpdated(_collectionId); } /** * @notice Updates collection's financials. * @param _collectionId Collection ID. * @param _artistPrimaryBPS New artist fee percentage. * @param _FJMPrimaryBPS New 4JM fee percentage. * @param _DAOPrimaryBPS New DAO fee percentage. */ function updateCollectionPrimarySplit( uint256 _collectionId, uint256 _artistPrimaryBPS, uint256 _FJMPrimaryBPS, uint256 _DAOPrimaryBPS ) external onlyValidCollectionId(_collectionId) onlyRole(DEFAULT_ADMIN_ROLE) { // 10_000 BPS = 100% // require the sum of all primary splits to be exactly MAX_BPS require(_artistPrimaryBPS + _FJMPrimaryBPS + _DAOPrimaryBPS == MAX_BPS, "Primary split != 100%"); collectionIdToFinancials[_collectionId].artistPrimaryBPS = _artistPrimaryBPS; collectionIdToFinancials[_collectionId].FJMPrimaryBPS = _FJMPrimaryBPS; collectionIdToFinancials[_collectionId].DAOPrimaryBPS = _DAOPrimaryBPS; emit CollectionPrimarySplitUpdated(_collectionId); } /** * @notice Updates collection's seeds. * @param _collectionId Collection ID. * @param _seeds Seeds to be set for collection `_collectionId`. * @dev Only callable by Randomizer contract. */ function setCollectionSeeds( uint256 _collectionId, uint24[2] calldata _seeds ) external onlyValidCollectionId(_collectionId) { require( msg.sender == address(randomizerContract), "Only randomizer may set" ); Collection storage collection = collections[_collectionId]; require(collection.seeds.length == 0, "Seeds already set"); require(_seeds.length == 2, "Seeds must be length 2"); collection.seeds = _seeds; emit CollectionSeedsSet(_collectionId, _seeds[0], _seeds[1]); } /** * @notice Requests an update to the collection's seeds from the Randomizer contract. * @param _collectionId Collection ID. * @dev Only callable by Admin after the setSeedsAfterBlock block number. */ function requestCollectionSeeds( uint256 _collectionId ) external onlyValidCollectionId(_collectionId) onlyRole(DEFAULT_ADMIN_ROLE) { uint allowedBlock = collections[_collectionId].setSeedsAfterBlock; require(allowedBlock > 0 && block.number > allowedBlock, "Too early to set seeds"); randomizerContract.setCollectionSeeds(_collectionId); } /** * @notice Updates 4JM and DAO addresses. * @param _FJMAddress 4JM address. * @param _DAOAddress DAO address. * Registry. */ function updateRoyaltiesAddresses( address payable _FJMAddress, address payable _DAOAddress ) public onlyRole(DEFAULT_ADMIN_ROLE) onlyNonZeroAddress(_FJMAddress) onlyNonZeroAddress(_DAOAddress) { FJMAddress = _FJMAddress; DAOAddress = _DAOAddress; emit RoyaltiesAddressesUpdated(_FJMAddress, _DAOAddress); } /** * @notice Updates randomizer to `_randomizerAddress`. * @param _randomizerAddress Address of new randomizer. */ function updateRandomizer( address _randomizerAddress ) external onlyRole(DEFAULT_ADMIN_ROLE) onlyNonZeroAddress(_randomizerAddress) { randomizerContract = IRandomizerV1(_randomizerAddress); emit RandomizerUpdated(_randomizerAddress); } /** * @notice Mints a new token for collection `_collectionId`. * @param _to Receiver of the new token. * @param _collectionId Collection ID. * @param _amount Number of tokens to mint. * @dev Mints ids in incremental order, coordinates are determined at random on last mint * (requires minting all collection ids to generate seeds). Only callable by minter role * (minter contract and admin account handling fiat sales). */ function mint( address _to, uint256 _collectionId, uint24 _amount ) external onlyValidCollectionId(_collectionId) nonReentrant returns (uint256 tokenId) { if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender) && !hasRole(MINTER_ROLE, msg.sender)) { revert NotAllowed(); } if (_amount == 0) { revert InvalidMintAmount(_amount); } Collection storage collection = collections[_collectionId]; uint24 oldNParticles = collection.nParticles; uint24 maxParticles = collection.maxParticles; uint24 newNParticles = oldNParticles + _amount; if (newNParticles > maxParticles) { revert InvalidMintAmount(_amount); } if (!collection.active && !hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) { revert CollectionNotActive(_collectionId); } collection.nParticles = newNParticles; uint256 newTokenId; unchecked { // oldNParticles is uint24 << max uint256. In production use, // _collectionId * ONE_MILLION must be << max uint256, otherwise // tokenIdToCollectionId function becomes invalid. // Therefore, no risk of overflow newTokenId = (_collectionId * MAX_COLLECTION_SIZE) + oldNParticles; } if (newNParticles == maxParticles) { // Allow setCollectionSeeds to be called 256 blocks (8 epochs) after the last mint, // by a contract Admin (essentially revealing the final coordinates and metadata for each token) collection.setSeedsAfterBlock = block.number + 256; collection.active = false; emit CollectionFullyMinted(_collectionId); } for (uint256 i; i < _amount;) { _safeMint(_to, newTokenId + i); unchecked { i++; } } return newTokenId; } /** * @notice Burns tokensToRedeem tokens in a collection for user `tokensOwner`. * Used when redeeming proceeds from a sale. * * @dev The caller must be the governor contract. * Approval to burn is checked on the governor contract. */ function burn(address tokensOwner, uint256 collectionId, uint256 tokensToRedeem) external onlyRole(GOVERNOR_ROLE) onlyValidCollectionId(collectionId) returns (uint256 tokensBurnt) { return _burn(tokensOwner, collectionId, tokensToRedeem); } /** * @notice Burns `tokens` array in a collection for user `tokensOwner`. * Used when redeeming proceeds from a sale. * * @dev The caller must be the governor contract. * Approval to burn is checked on the governor contract. */ function burn(address tokensOwner, uint256 collectionId, uint256[] calldata tokens) external onlyRole(GOVERNOR_ROLE) returns (uint256 tokensBurnt) { return _burn(tokensOwner, collectionId, tokens); } /// @dev Override transfer and approval functions to use the operator filter registry /** * @dev See {IERC721-setApprovalForAll}. * The added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function setApprovalForAll(address operator, bool approved) public override(IERC721, ERC721) onlyAllowedOperatorApproval(operator) { super.setApprovalForAll(operator, approved); } /** * @dev See {IERC721-approve}. * The added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function approve(address operator, uint256 tokenId) public override(IERC721, ERC721) onlyAllowedOperatorApproval(operator) { super.approve(operator, tokenId); } /** * @dev See {IERC721-transferFrom}. * The added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function transferFrom(address from, address to, uint256 tokenId) public override(IERC721, ERC721) onlyAllowedOperator(from) { super.transferFrom(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. * The added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function safeTransferFrom(address from, address to, uint256 tokenId) public override(IERC721, ERC721) onlyAllowedOperator(from) { super.safeTransferFrom(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. * The added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public override(IERC721, ERC721) onlyAllowedOperator(from) { super.safeTransferFrom(from, to, tokenId, data); } // The following functions are overrides required by Solidity. function _beforeTokenTransfer( address from, address to, uint256 tokenId, uint256 batchSize ) internal override(ERC721MultiCollection) { super._beforeTokenTransfer(from, to, tokenId, batchSize); } function _afterTokenTransfer( address from, address to, uint256 tokenId, uint256 batchSize ) internal override(PRTCLCoreERC721Votes) { super._afterTokenTransfer(from, to, tokenId, batchSize); } function supportsInterface( bytes4 interfaceId ) public view override(ERC721, AccessControl, IERC165) returns (bool) { return super.supportsInterface(interfaceId); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(account), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleGranted} event. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleRevoked} event. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. * * May emit a {RoleRevoked} event. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * May emit a {RoleGranted} event. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. * * May emit a {RoleGranted} event. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. * * May emit a {RoleRevoked} event. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @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 ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings 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. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: address zero is not a valid owner"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _ownerOf(tokenId); require(owner != address(0), "ERC721: invalid token ID"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { _requireMinted(tokenId); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not token owner or approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { _requireMinted(tokenId); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved"); _safeTransfer(from, to, tokenId, data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist */ function _ownerOf(uint256 tokenId) internal view virtual returns (address) { return _owners[tokenId]; } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _ownerOf(tokenId) != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { address owner = ERC721.ownerOf(tokenId); return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId, 1); // Check that tokenId was not minted by `_beforeTokenTransfer` hook require(!_exists(tokenId), "ERC721: token already minted"); unchecked { // Will not overflow unless all 2**256 token ids are minted to the same owner. // Given that tokens are minted one by one, it is impossible in practice that // this ever happens. Might change if we allow batch minting. // The ERC fails to describe this case. _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId, 1); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * This is an internal function that does not check if the sender is authorized to operate on the token. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId, 1); // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook owner = ERC721.ownerOf(tokenId); // Clear approvals delete _tokenApprovals[tokenId]; unchecked { // Cannot overflow, as that would require more tokens to be burned/transferred // out than the owner initially received through minting and transferring in. _balances[owner] -= 1; } delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId, 1); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId, 1); // Check that tokenId was not transferred by `_beforeTokenTransfer` hook require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); // Clear approvals from the previous owner delete _tokenApprovals[tokenId]; unchecked { // `_balances[from]` cannot overflow for the same reason as described in `_burn`: // `from`'s balance is the number of token held, which is at least one before the current // transfer. // `_balances[to]` could overflow in the conditions described in `_mint`. That would require // all 2**256 token ids to be minted, which in practice is impossible. _balances[from] -= 1; _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId, 1); } /** * @dev Approve `to` to operate on `tokenId` * * Emits an {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.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 IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { /// @solidity memory-safe-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`. * - When `from` is zero, the tokens will be minted for `to`. * - When `to` is zero, ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256, /* firstTokenId */ uint256 batchSize ) internal virtual { if (batchSize > 1) { if (from != address(0)) { _balances[from] -= batchSize; } if (to != address(0)) { _balances[to] += batchSize; } } } /** * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`. * - When `from` is zero, the tokens were minted for `to`. * - When `to` is zero, ``from``'s tokens were burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must * understand this adds an external call which potentially creates a reentrancy vulnerability. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.1) (utils/Checkpoints.sol) // This file was procedurally generated from scripts/generate/templates/Checkpoints.js. pragma solidity ^0.8.0; import "./math/Math.sol"; import "./math/SafeCast.sol"; /** * @dev This library defines the `History` struct, for checkpointing values as they change at different points in * time, and later looking up past values by block number. See {Votes} as an example. * * To create a history of checkpoints define a variable type `Checkpoints.History` in your contract, and store a new * checkpoint for the current transaction block using the {push} function. * * _Available since v4.5._ */ library Checkpoints { struct History { Checkpoint[] _checkpoints; } struct Checkpoint { uint32 _blockNumber; uint224 _value; } /** * @dev Returns the value at a given block number. If a checkpoint is not available at that block, the closest one * before it is returned, or zero otherwise. Because the number returned corresponds to that at the end of the * block, the requested block number must be in the past, excluding the current block. */ function getAtBlock(History storage self, uint256 blockNumber) internal view returns (uint256) { require(blockNumber < block.number, "Checkpoints: block not yet mined"); uint32 key = SafeCast.toUint32(blockNumber); uint256 len = self._checkpoints.length; uint256 pos = _upperBinaryLookup(self._checkpoints, key, 0, len); return pos == 0 ? 0 : _unsafeAccess(self._checkpoints, pos - 1)._value; } /** * @dev Returns the value at a given block number. If a checkpoint is not available at that block, the closest one * before it is returned, or zero otherwise. Similar to {upperLookup} but optimized for the case when the searched * checkpoint is probably "recent", defined as being among the last sqrt(N) checkpoints where N is the number of * checkpoints. */ function getAtProbablyRecentBlock(History storage self, uint256 blockNumber) internal view returns (uint256) { require(blockNumber < block.number, "Checkpoints: block not yet mined"); uint32 key = SafeCast.toUint32(blockNumber); uint256 len = self._checkpoints.length; uint256 low = 0; uint256 high = len; if (len > 5) { uint256 mid = len - Math.sqrt(len); if (key < _unsafeAccess(self._checkpoints, mid)._blockNumber) { high = mid; } else { low = mid + 1; } } uint256 pos = _upperBinaryLookup(self._checkpoints, key, low, high); return pos == 0 ? 0 : _unsafeAccess(self._checkpoints, pos - 1)._value; } /** * @dev Pushes a value onto a History so that it is stored as the checkpoint for the current block. * * Returns previous value and new value. */ function push(History storage self, uint256 value) internal returns (uint256, uint256) { return _insert(self._checkpoints, SafeCast.toUint32(block.number), SafeCast.toUint224(value)); } /** * @dev Pushes a value onto a History, by updating the latest value using binary operation `op`. The new value will * be set to `op(latest, delta)`. * * Returns previous value and new value. */ function push( History storage self, function(uint256, uint256) view returns (uint256) op, uint256 delta ) internal returns (uint256, uint256) { return push(self, op(latest(self), delta)); } /** * @dev Returns the value in the most recent checkpoint, or zero if there are no checkpoints. */ function latest(History storage self) internal view returns (uint224) { uint256 pos = self._checkpoints.length; return pos == 0 ? 0 : _unsafeAccess(self._checkpoints, pos - 1)._value; } /** * @dev Returns whether there is a checkpoint in the structure (i.e. it is not empty), and if so the key and value * in the most recent checkpoint. */ function latestCheckpoint(History storage self) internal view returns ( bool exists, uint32 _blockNumber, uint224 _value ) { uint256 pos = self._checkpoints.length; if (pos == 0) { return (false, 0, 0); } else { Checkpoint memory ckpt = _unsafeAccess(self._checkpoints, pos - 1); return (true, ckpt._blockNumber, ckpt._value); } } /** * @dev Returns the number of checkpoint. */ function length(History storage self) internal view returns (uint256) { return self._checkpoints.length; } /** * @dev Pushes a (`key`, `value`) pair into an ordered list of checkpoints, either by inserting a new checkpoint, * or by updating the last one. */ function _insert( Checkpoint[] storage self, uint32 key, uint224 value ) private returns (uint224, uint224) { uint256 pos = self.length; if (pos > 0) { // Copying to memory is important here. Checkpoint memory last = _unsafeAccess(self, pos - 1); // Checkpoints keys must be increasing. require(last._blockNumber <= key, "Checkpoint: invalid key"); // Update or push new checkpoint if (last._blockNumber == key) { _unsafeAccess(self, pos - 1)._value = value; } else { self.push(Checkpoint({_blockNumber: key, _value: value})); } return (last._value, value); } else { self.push(Checkpoint({_blockNumber: key, _value: value})); return (0, value); } } /** * @dev Return the index of the oldest checkpoint whose key is greater than the search key, or `high` if there is none. * `low` and `high` define a section where to do the search, with inclusive `low` and exclusive `high`. * * WARNING: `high` should not be greater than the array's length. */ function _upperBinaryLookup( Checkpoint[] storage self, uint32 key, uint256 low, uint256 high ) private view returns (uint256) { while (low < high) { uint256 mid = Math.average(low, high); if (_unsafeAccess(self, mid)._blockNumber > key) { high = mid; } else { low = mid + 1; } } return high; } /** * @dev Return the index of the oldest checkpoint whose key is greater or equal than the search key, or `high` if there is none. * `low` and `high` define a section where to do the search, with inclusive `low` and exclusive `high`. * * WARNING: `high` should not be greater than the array's length. */ function _lowerBinaryLookup( Checkpoint[] storage self, uint32 key, uint256 low, uint256 high ) private view returns (uint256) { while (low < high) { uint256 mid = Math.average(low, high); if (_unsafeAccess(self, mid)._blockNumber < key) { low = mid + 1; } else { high = mid; } } return high; } /** * @dev Access an element of the array without performing bounds check. The position is assumed to be within bounds. */ function _unsafeAccess(Checkpoint[] storage self, uint256 pos) private pure returns (Checkpoint storage result) { assembly { mstore(0, self.slot) result.slot := add(keccak256(0, 0x20), pos) } } struct Trace224 { Checkpoint224[] _checkpoints; } struct Checkpoint224 { uint32 _key; uint224 _value; } /** * @dev Pushes a (`key`, `value`) pair into a Trace224 so that it is stored as the checkpoint. * * Returns previous value and new value. */ function push( Trace224 storage self, uint32 key, uint224 value ) internal returns (uint224, uint224) { return _insert(self._checkpoints, key, value); } /** * @dev Returns the value in the oldest checkpoint with key greater or equal than the search key, or zero if there is none. */ function lowerLookup(Trace224 storage self, uint32 key) internal view returns (uint224) { uint256 len = self._checkpoints.length; uint256 pos = _lowerBinaryLookup(self._checkpoints, key, 0, len); return pos == len ? 0 : _unsafeAccess(self._checkpoints, pos)._value; } /** * @dev Returns the value in the most recent checkpoint with key lower or equal than the search key. */ function upperLookup(Trace224 storage self, uint32 key) internal view returns (uint224) { uint256 len = self._checkpoints.length; uint256 pos = _upperBinaryLookup(self._checkpoints, key, 0, len); return pos == 0 ? 0 : _unsafeAccess(self._checkpoints, pos - 1)._value; } /** * @dev Returns the value in the most recent checkpoint, or zero if there are no checkpoints. */ function latest(Trace224 storage self) internal view returns (uint224) { uint256 pos = self._checkpoints.length; return pos == 0 ? 0 : _unsafeAccess(self._checkpoints, pos - 1)._value; } /** * @dev Returns whether there is a checkpoint in the structure (i.e. it is not empty), and if so the key and value * in the most recent checkpoint. */ function latestCheckpoint(Trace224 storage self) internal view returns ( bool exists, uint32 _key, uint224 _value ) { uint256 pos = self._checkpoints.length; if (pos == 0) { return (false, 0, 0); } else { Checkpoint224 memory ckpt = _unsafeAccess(self._checkpoints, pos - 1); return (true, ckpt._key, ckpt._value); } } /** * @dev Returns the number of checkpoint. */ function length(Trace224 storage self) internal view returns (uint256) { return self._checkpoints.length; } /** * @dev Pushes a (`key`, `value`) pair into an ordered list of checkpoints, either by inserting a new checkpoint, * or by updating the last one. */ function _insert( Checkpoint224[] storage self, uint32 key, uint224 value ) private returns (uint224, uint224) { uint256 pos = self.length; if (pos > 0) { // Copying to memory is important here. Checkpoint224 memory last = _unsafeAccess(self, pos - 1); // Checkpoints keys must be increasing. require(last._key <= key, "Checkpoint: invalid key"); // Update or push new checkpoint if (last._key == key) { _unsafeAccess(self, pos - 1)._value = value; } else { self.push(Checkpoint224({_key: key, _value: value})); } return (last._value, value); } else { self.push(Checkpoint224({_key: key, _value: value})); return (0, value); } } /** * @dev Return the index of the oldest checkpoint whose key is greater than the search key, or `high` if there is none. * `low` and `high` define a section where to do the search, with inclusive `low` and exclusive `high`. * * WARNING: `high` should not be greater than the array's length. */ function _upperBinaryLookup( Checkpoint224[] storage self, uint32 key, uint256 low, uint256 high ) private view returns (uint256) { while (low < high) { uint256 mid = Math.average(low, high); if (_unsafeAccess(self, mid)._key > key) { high = mid; } else { low = mid + 1; } } return high; } /** * @dev Return the index of the oldest checkpoint whose key is greater or equal than the search key, or `high` if there is none. * `low` and `high` define a section where to do the search, with inclusive `low` and exclusive `high`. * * WARNING: `high` should not be greater than the array's length. */ function _lowerBinaryLookup( Checkpoint224[] storage self, uint32 key, uint256 low, uint256 high ) private view returns (uint256) { while (low < high) { uint256 mid = Math.average(low, high); if (_unsafeAccess(self, mid)._key < key) { low = mid + 1; } else { high = mid; } } return high; } /** * @dev Access an element of the array without performing bounds check. The position is assumed to be within bounds. */ function _unsafeAccess(Checkpoint224[] storage self, uint256 pos) private pure returns (Checkpoint224 storage result) { assembly { mstore(0, self.slot) result.slot := add(keccak256(0, 0x20), pos) } } struct Trace160 { Checkpoint160[] _checkpoints; } struct Checkpoint160 { uint96 _key; uint160 _value; } /** * @dev Pushes a (`key`, `value`) pair into a Trace160 so that it is stored as the checkpoint. * * Returns previous value and new value. */ function push( Trace160 storage self, uint96 key, uint160 value ) internal returns (uint160, uint160) { return _insert(self._checkpoints, key, value); } /** * @dev Returns the value in the oldest checkpoint with key greater or equal than the search key, or zero if there is none. */ function lowerLookup(Trace160 storage self, uint96 key) internal view returns (uint160) { uint256 len = self._checkpoints.length; uint256 pos = _lowerBinaryLookup(self._checkpoints, key, 0, len); return pos == len ? 0 : _unsafeAccess(self._checkpoints, pos)._value; } /** * @dev Returns the value in the most recent checkpoint with key lower or equal than the search key. */ function upperLookup(Trace160 storage self, uint96 key) internal view returns (uint160) { uint256 len = self._checkpoints.length; uint256 pos = _upperBinaryLookup(self._checkpoints, key, 0, len); return pos == 0 ? 0 : _unsafeAccess(self._checkpoints, pos - 1)._value; } /** * @dev Returns the value in the most recent checkpoint, or zero if there are no checkpoints. */ function latest(Trace160 storage self) internal view returns (uint160) { uint256 pos = self._checkpoints.length; return pos == 0 ? 0 : _unsafeAccess(self._checkpoints, pos - 1)._value; } /** * @dev Returns whether there is a checkpoint in the structure (i.e. it is not empty), and if so the key and value * in the most recent checkpoint. */ function latestCheckpoint(Trace160 storage self) internal view returns ( bool exists, uint96 _key, uint160 _value ) { uint256 pos = self._checkpoints.length; if (pos == 0) { return (false, 0, 0); } else { Checkpoint160 memory ckpt = _unsafeAccess(self._checkpoints, pos - 1); return (true, ckpt._key, ckpt._value); } } /** * @dev Returns the number of checkpoint. */ function length(Trace160 storage self) internal view returns (uint256) { return self._checkpoints.length; } /** * @dev Pushes a (`key`, `value`) pair into an ordered list of checkpoints, either by inserting a new checkpoint, * or by updating the last one. */ function _insert( Checkpoint160[] storage self, uint96 key, uint160 value ) private returns (uint160, uint160) { uint256 pos = self.length; if (pos > 0) { // Copying to memory is important here. Checkpoint160 memory last = _unsafeAccess(self, pos - 1); // Checkpoints keys must be increasing. require(last._key <= key, "Checkpoint: invalid key"); // Update or push new checkpoint if (last._key == key) { _unsafeAccess(self, pos - 1)._value = value; } else { self.push(Checkpoint160({_key: key, _value: value})); } return (last._value, value); } else { self.push(Checkpoint160({_key: key, _value: value})); return (0, value); } } /** * @dev Return the index of the oldest checkpoint whose key is greater than the search key, or `high` if there is none. * `low` and `high` define a section where to do the search, with inclusive `low` and exclusive `high`. * * WARNING: `high` should not be greater than the array's length. */ function _upperBinaryLookup( Checkpoint160[] storage self, uint96 key, uint256 low, uint256 high ) private view returns (uint256) { while (low < high) { uint256 mid = Math.average(low, high); if (_unsafeAccess(self, mid)._key > key) { high = mid; } else { low = mid + 1; } } return high; } /** * @dev Return the index of the oldest checkpoint whose key is greater or equal than the search key, or `high` if there is none. * `low` and `high` define a section where to do the search, with inclusive `low` and exclusive `high`. * * WARNING: `high` should not be greater than the array's length. */ function _lowerBinaryLookup( Checkpoint160[] storage self, uint96 key, uint256 low, uint256 high ) private view returns (uint256) { while (low < high) { uint256 mid = Math.average(low, high); if (_unsafeAccess(self, mid)._key < key) { low = mid + 1; } else { high = mid; } } return high; } /** * @dev Access an element of the array without performing bounds check. The position is assumed to be within bounds. */ function _unsafeAccess(Checkpoint160[] storage self, uint256 pos) private pure returns (Checkpoint160 storage result) { assembly { mstore(0, self.slot) result.slot := add(keccak256(0, 0x20), pos) } } }
// 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: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV // Deprecated in v4.8 } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/EIP712.sol) pragma solidity ^0.8.0; import "./ECDSA.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; address private immutable _CACHED_THIS; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = block.chainid; _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _CACHED_THIS = address(this); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator( bytes32 typeHash, bytes32 nameHash, bytes32 versionHash ) private view returns (bytes32) { return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this))); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol) // This file was procedurally generated from scripts/generate/templates/SafeCast.js. pragma solidity ^0.8.0; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. * * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing * all math on `uint256` and `int256` and then downcasting. */ library SafeCast { /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits * * _Available since v4.7._ */ function toUint248(uint256 value) internal pure returns (uint248) { require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits"); return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits * * _Available since v4.7._ */ function toUint240(uint256 value) internal pure returns (uint240) { require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits"); return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits * * _Available since v4.7._ */ function toUint232(uint256 value) internal pure returns (uint232) { require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits"); return uint232(value); } /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits * * _Available since v4.2._ */ function toUint224(uint256 value) internal pure returns (uint224) { require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits"); return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits * * _Available since v4.7._ */ function toUint216(uint256 value) internal pure returns (uint216) { require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits"); return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits * * _Available since v4.7._ */ function toUint208(uint256 value) internal pure returns (uint208) { require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits"); return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits * * _Available since v4.7._ */ function toUint200(uint256 value) internal pure returns (uint200) { require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits"); return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits * * _Available since v4.7._ */ function toUint192(uint256 value) internal pure returns (uint192) { require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits"); return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits * * _Available since v4.7._ */ function toUint184(uint256 value) internal pure returns (uint184) { require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits"); return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits * * _Available since v4.7._ */ function toUint176(uint256 value) internal pure returns (uint176) { require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits"); return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits * * _Available since v4.7._ */ function toUint168(uint256 value) internal pure returns (uint168) { require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits"); return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits * * _Available since v4.7._ */ function toUint160(uint256 value) internal pure returns (uint160) { require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits"); return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits * * _Available since v4.7._ */ function toUint152(uint256 value) internal pure returns (uint152) { require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits"); return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits * * _Available since v4.7._ */ function toUint144(uint256 value) internal pure returns (uint144) { require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits"); return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits * * _Available since v4.7._ */ function toUint136(uint256 value) internal pure returns (uint136) { require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits"); return uint136(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v2.5._ */ function toUint128(uint256 value) internal pure returns (uint128) { require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits"); return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits * * _Available since v4.7._ */ function toUint120(uint256 value) internal pure returns (uint120) { require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits"); return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits * * _Available since v4.7._ */ function toUint112(uint256 value) internal pure returns (uint112) { require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits"); return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits * * _Available since v4.7._ */ function toUint104(uint256 value) internal pure returns (uint104) { require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits"); return uint104(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits * * _Available since v4.2._ */ function toUint96(uint256 value) internal pure returns (uint96) { require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits"); return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits * * _Available since v4.7._ */ function toUint88(uint256 value) internal pure returns (uint88) { require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits"); return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits * * _Available since v4.7._ */ function toUint80(uint256 value) internal pure returns (uint80) { require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits"); return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits * * _Available since v4.7._ */ function toUint72(uint256 value) internal pure returns (uint72) { require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits"); return uint72(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v2.5._ */ function toUint64(uint256 value) internal pure returns (uint64) { require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits"); return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits * * _Available since v4.7._ */ function toUint56(uint256 value) internal pure returns (uint56) { require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits"); return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits * * _Available since v4.7._ */ function toUint48(uint256 value) internal pure returns (uint48) { require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits"); return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits * * _Available since v4.7._ */ function toUint40(uint256 value) internal pure returns (uint40) { require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits"); return uint40(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v2.5._ */ function toUint32(uint256 value) internal pure returns (uint32) { require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits"); return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits * * _Available since v4.7._ */ function toUint24(uint256 value) internal pure returns (uint24) { require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits"); return uint24(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v2.5._ */ function toUint16(uint256 value) internal pure returns (uint16) { require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits"); return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits * * _Available since v2.5._ */ function toUint8(uint256 value) internal pure returns (uint8) { require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits"); return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. * * _Available since v3.0._ */ function toUint256(int256 value) internal pure returns (uint256) { require(value >= 0, "SafeCast: value must be positive"); return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits * * _Available since v4.7._ */ function toInt248(int256 value) internal pure returns (int248 downcasted) { downcasted = int248(value); require(downcasted == value, "SafeCast: value doesn't fit in 248 bits"); } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits * * _Available since v4.7._ */ function toInt240(int256 value) internal pure returns (int240 downcasted) { downcasted = int240(value); require(downcasted == value, "SafeCast: value doesn't fit in 240 bits"); } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits * * _Available since v4.7._ */ function toInt232(int256 value) internal pure returns (int232 downcasted) { downcasted = int232(value); require(downcasted == value, "SafeCast: value doesn't fit in 232 bits"); } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits * * _Available since v4.7._ */ function toInt224(int256 value) internal pure returns (int224 downcasted) { downcasted = int224(value); require(downcasted == value, "SafeCast: value doesn't fit in 224 bits"); } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits * * _Available since v4.7._ */ function toInt216(int256 value) internal pure returns (int216 downcasted) { downcasted = int216(value); require(downcasted == value, "SafeCast: value doesn't fit in 216 bits"); } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits * * _Available since v4.7._ */ function toInt208(int256 value) internal pure returns (int208 downcasted) { downcasted = int208(value); require(downcasted == value, "SafeCast: value doesn't fit in 208 bits"); } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits * * _Available since v4.7._ */ function toInt200(int256 value) internal pure returns (int200 downcasted) { downcasted = int200(value); require(downcasted == value, "SafeCast: value doesn't fit in 200 bits"); } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits * * _Available since v4.7._ */ function toInt192(int256 value) internal pure returns (int192 downcasted) { downcasted = int192(value); require(downcasted == value, "SafeCast: value doesn't fit in 192 bits"); } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits * * _Available since v4.7._ */ function toInt184(int256 value) internal pure returns (int184 downcasted) { downcasted = int184(value); require(downcasted == value, "SafeCast: value doesn't fit in 184 bits"); } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits * * _Available since v4.7._ */ function toInt176(int256 value) internal pure returns (int176 downcasted) { downcasted = int176(value); require(downcasted == value, "SafeCast: value doesn't fit in 176 bits"); } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits * * _Available since v4.7._ */ function toInt168(int256 value) internal pure returns (int168 downcasted) { downcasted = int168(value); require(downcasted == value, "SafeCast: value doesn't fit in 168 bits"); } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits * * _Available since v4.7._ */ function toInt160(int256 value) internal pure returns (int160 downcasted) { downcasted = int160(value); require(downcasted == value, "SafeCast: value doesn't fit in 160 bits"); } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits * * _Available since v4.7._ */ function toInt152(int256 value) internal pure returns (int152 downcasted) { downcasted = int152(value); require(downcasted == value, "SafeCast: value doesn't fit in 152 bits"); } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits * * _Available since v4.7._ */ function toInt144(int256 value) internal pure returns (int144 downcasted) { downcasted = int144(value); require(downcasted == value, "SafeCast: value doesn't fit in 144 bits"); } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits * * _Available since v4.7._ */ function toInt136(int256 value) internal pure returns (int136 downcasted) { downcasted = int136(value); require(downcasted == value, "SafeCast: value doesn't fit in 136 bits"); } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v3.1._ */ function toInt128(int256 value) internal pure returns (int128 downcasted) { downcasted = int128(value); require(downcasted == value, "SafeCast: value doesn't fit in 128 bits"); } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits * * _Available since v4.7._ */ function toInt120(int256 value) internal pure returns (int120 downcasted) { downcasted = int120(value); require(downcasted == value, "SafeCast: value doesn't fit in 120 bits"); } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits * * _Available since v4.7._ */ function toInt112(int256 value) internal pure returns (int112 downcasted) { downcasted = int112(value); require(downcasted == value, "SafeCast: value doesn't fit in 112 bits"); } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits * * _Available since v4.7._ */ function toInt104(int256 value) internal pure returns (int104 downcasted) { downcasted = int104(value); require(downcasted == value, "SafeCast: value doesn't fit in 104 bits"); } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits * * _Available since v4.7._ */ function toInt96(int256 value) internal pure returns (int96 downcasted) { downcasted = int96(value); require(downcasted == value, "SafeCast: value doesn't fit in 96 bits"); } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits * * _Available since v4.7._ */ function toInt88(int256 value) internal pure returns (int88 downcasted) { downcasted = int88(value); require(downcasted == value, "SafeCast: value doesn't fit in 88 bits"); } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits * * _Available since v4.7._ */ function toInt80(int256 value) internal pure returns (int80 downcasted) { downcasted = int80(value); require(downcasted == value, "SafeCast: value doesn't fit in 80 bits"); } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits * * _Available since v4.7._ */ function toInt72(int256 value) internal pure returns (int72 downcasted) { downcasted = int72(value); require(downcasted == value, "SafeCast: value doesn't fit in 72 bits"); } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v3.1._ */ function toInt64(int256 value) internal pure returns (int64 downcasted) { downcasted = int64(value); require(downcasted == value, "SafeCast: value doesn't fit in 64 bits"); } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits * * _Available since v4.7._ */ function toInt56(int256 value) internal pure returns (int56 downcasted) { downcasted = int56(value); require(downcasted == value, "SafeCast: value doesn't fit in 56 bits"); } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits * * _Available since v4.7._ */ function toInt48(int256 value) internal pure returns (int48 downcasted) { downcasted = int48(value); require(downcasted == value, "SafeCast: value doesn't fit in 48 bits"); } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits * * _Available since v4.7._ */ function toInt40(int256 value) internal pure returns (int40 downcasted) { downcasted = int40(value); require(downcasted == value, "SafeCast: value doesn't fit in 40 bits"); } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v3.1._ */ function toInt32(int256 value) internal pure returns (int32 downcasted) { downcasted = int32(value); require(downcasted == value, "SafeCast: value doesn't fit in 32 bits"); } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits * * _Available since v4.7._ */ function toInt24(int256 value) internal pure returns (int24 downcasted) { downcasted = int24(value); require(downcasted == value, "SafeCast: value doesn't fit in 24 bits"); } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v3.1._ */ function toInt16(int256 value) internal pure returns (int16 downcasted) { downcasted = int16(value); require(downcasted == value, "SafeCast: value doesn't fit in 16 bits"); } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits * * _Available since v3.1._ */ function toInt8(int256 value) internal pure returns (int8 downcasted) { downcasted = int8(value); require(downcasted == value, "SafeCast: value doesn't fit in 8 bits"); } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. * * _Available since v3.0._ */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256"); return int256(value); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "./interfaces/IERC721MultiCollection.sol"; /// @title ERC721 Multi collection extension implementation - Part of the Particle Protocol V1.1 /// @author Particle Collection - valdi.eth /// See {IERC721MultiCollection}. /// @dev Based on OpenZeppelin's ERC721Enumerable.sol, extending it to allow for multiple collections. abstract contract ERC721MultiCollection is ERC721, IERC721MultiCollection { uint256 public immutable MAX_COLLECTION_SIZE; // Mapping owner address to token count per collection // owner => collection id => balance mapping(address => mapping(uint256 => uint256)) private _collectionBalances; // Mapping from owner to list of owned token IDs per collection // owner => collection id => token index => token id mapping(address => mapping(uint256 => mapping(uint256 => uint256))) private _collectionOwnedTokens; // Mapping from token ID to index of the owner tokens list per collection // owner => collectionId => tokenId => index mapping(address => mapping(uint256 => mapping(uint256 => uint256))) private _collectionOwnedTokensIndex; // Mapping from collection id to number of tokens on that collection mapping(uint256 => uint256) private _tokensPerCollection; /// bool indicating if adding new collections is forbidden; /// default behavior is to allow new collections bool private _newCollectionsForbidden; /// next collection ID to be created uint256 private _nextCollectionId; modifier onlyValidCollectionId(uint256 _collectionId) { if (!collectionExists(_collectionId)) { revert InvalidCollectionId(_collectionId); } _; } constructor(uint256 maxCollectionSize) { MAX_COLLECTION_SIZE = maxCollectionSize; } /** * @dev External function to determine if a collection exists. */ function collectionExists(uint256 collectionId) public view override returns (bool) { return collectionId < _nextCollectionId; } /** * @dev Determines if new collections can be added to this contract. */ function _newCollectionsAllowed() internal view returns (bool) { return !_newCollectionsForbidden; } /** * @dev Determines if a collection size is valid. */ function _validCollectionSize(uint256 collectionSize) internal view returns (bool) { return collectionSize > 0 && collectionSize <= MAX_COLLECTION_SIZE; } /** * @dev Adds a new collection and returns the collection ID. */ function _addCollection(uint256 collectionSize) internal returns (uint256){ require(!_newCollectionsForbidden, "New collections forbidden"); require(_validCollectionSize(collectionSize), "Number of particles must be > 0 && <= MAX_COLLECTION_SIZE"); uint256 collectionId = _nextCollectionId; _nextCollectionId++; emit CollectionAdded(collectionId); return collectionId; } /** * @notice returns the total number of collections. */ function numberOfCollections() public view returns (uint256) { return _nextCollectionId; } /** * @notice Balance for `owner` in `collectionId` */ function balanceOf(address owner, uint256 collectionId) public view returns (uint256) { if (owner == address(0)) { revert InvalidOwnerAddress(); } return _collectionBalances[owner][collectionId]; } /** * @dev Returns the total amount of tokens stored by the contract for `collectionId`. */ function tokenTotalSupply(uint256 collectionId) external view returns (uint256) { return _tokensPerCollection[collectionId]; } /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list on `collectionId`. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index, uint256 collectionId) external view returns (uint256) { require(index < balanceOf(owner, collectionId), "ERC721MultiCollection: owner index out of bounds"); return _collectionOwnedTokens[owner][collectionId][index]; } /** * @notice Forever forbids new collections from being added to this contract. */ function _forbidNewCollections() internal { require(!_newCollectionsForbidden, "Already forbidden"); _newCollectionsForbidden = true; emit NewCollectionsForbidden(); } /** * @notice Get the collection ID for a given token ID */ function tokenIdToCollectionId(uint256 _tokenId) public view returns (uint256 collectionId) { return _tokenId / MAX_COLLECTION_SIZE; } /** * @notice Burns `tokensToBurn` tokens in a collection for user `owner`. * @notice It does not let the caller specify which tokens to burn. * * @dev does not check for approval or ownership of the caller. * Checking is left to the extended contract if needed according to it's own logic. */ function _burn(address owner, uint256 collectionId, uint256 tokensToBurn) internal returns (uint256 tokensBurnt) { uint256 balance = _collectionBalances[owner][collectionId]; if (balance < tokensToBurn) { revert InvalidBurnAmount(owner, collectionId, tokensToBurn, balance); } for (uint256 i = 0; i < tokensToBurn;) { uint256 tokenId = _collectionOwnedTokens[owner][collectionId][balance - 1 - i]; // Burn token at index balance - 1 - i, preventing swapping on each burn _burn(tokenId); unchecked { i++; } } return tokensToBurn; } /** * @notice Burns `tokens` array in a collection for user `owner`. * @notice It lets the caller specify which tokens to burn. * * @dev does not check for approval or ownership of the caller. * Checking is left to the extended contract if needed according to it's own logic. */ function _burn(address owner, uint256 collectionId, uint256[] calldata tokens) internal returns (uint256 tokensBurnt) { uint256 nOfTokens = tokens.length; for (uint256 i = 0; i < nOfTokens;) { uint256 tokenId = tokens[i]; if (ownerOf(tokenId) != owner) { revert InvalidBurnOwner(owner, tokenId); } if (tokenIdToCollectionId(tokenId) != collectionId) { revert InvalidCollectionId(collectionId); } _burn(tokenId); unchecked { i++; } } return nOfTokens; } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerCollectionEnumeration(address to, uint256 tokenId, uint256 collectionId) private { uint256 length = _collectionBalances[to][collectionId]; _collectionOwnedTokens[to][collectionId][length] = tokenId; _collectionOwnedTokensIndex[to][collectionId][tokenId] = length; _collectionBalances[to][collectionId] += 1; } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_collectionOwnedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _collectionOwnedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerCollectionEnumeration(address from, uint256 tokenId, uint256 collectionId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _collectionBalances[from][collectionId] - 1; uint256 tokenIndex = _collectionOwnedTokensIndex[from][collectionId][tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _collectionOwnedTokens[from][collectionId][lastTokenIndex]; _collectionOwnedTokens[from][collectionId][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _collectionOwnedTokensIndex[from][collectionId][lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _collectionOwnedTokensIndex[from][collectionId][tokenId]; delete _collectionOwnedTokens[from][collectionId][lastTokenIndex]; _collectionBalances[from][collectionId] -= 1; } // The following functions are overrides required by Solidity. function _beforeTokenTransfer( address from, address to, uint256 tokenId, uint256 batchSize ) internal virtual override(ERC721) { super._beforeTokenTransfer(from, to, tokenId, batchSize); uint256 collectionId = tokenIdToCollectionId(tokenId); if (from != address(0)) { _removeTokenFromOwnerCollectionEnumeration(from, tokenId, collectionId); } else { _tokensPerCollection[collectionId] += 1; } if (to != address(0)) { _addTokenToOwnerCollectionEnumeration(to, tokenId, collectionId); } else { _tokensPerCollection[collectionId] -= 1; } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; /// @title Interface for using {PRTCLCollections721V1} as voting tokens per collection. /// @author Particle Collection - valdi.eth /// @notice Manages base voting data /// @dev Modified version of OpenZeppelin's {IVotes} to accommodate multiple collections. interface IPRTCLVotes { /** * @dev Emitted when an account changes their delegate. */ event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate, uint256 collectionId); /** * @dev Emitted when a token transfer or delegate change results in changes to a delegate's number of votes. */ event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance, uint256 collectionId); /** * @dev Returned when checking voting power for a block number that is not yet mined. */ error BlockNotMined(); /** * @dev Returns the current amount of votes that `account` has for collection `collectionId`. */ function getVotes(address account, uint256 collectionId) external view returns (uint256); /** * @dev Returns the amount of votes that `account` had at the end of a past block (`blockNumber`) * for collection `collectionId`. */ function getPastVotes(address account, uint256 blockNumber, uint256 collectionId) external view returns (uint256); /** * @dev Returns the total supply of votes available at the end of a past block (`blockNumber`), * for collection `collectionId`. * * NOTE: This value is the sum of all available votes, which is not necessarily the sum of all delegated votes. * Votes that have not been delegated are still part of total supply, even though they would not participate in a * vote. */ function getPastTotalSupply(uint256 blockNumber, uint256 collectionId) external view returns (uint256); /** * @dev Returns the current total supply of votes for a given collection. */ function getTotalSupply(uint256 collectionId) external view returns (uint256); /** * @dev Delegates `collectionId` collection votes from the sender to `delegatee`. */ function delegate(address delegatee, uint256 collectionId) external; /** * @dev Returns the delegate that `account` has chosen for `collectionId` collection. */ function delegates(address account, uint256 collectionId) external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "../ERC721MultiCollection.sol"; import "./PRTCLVotes.sol"; /** * @dev Extension of ERC721MultiCollection to support voting and delegation as implemented by {PRTCLVotes}, where each individual NFT counts * as 1 vote unit within a collection. * * Tokens do not count as votes until they are delegated, because votes must be tracked which incurs an additional cost * on every transfer. Token holders can either delegate to a trusted representative who will decide how to make use of * the votes in governance decisions, or they can delegate to themselves to be their own representative. * * @author Particle Collection - valdi.eth */ abstract contract PRTCLCoreERC721Votes is ERC721MultiCollection, PRTCLVotes { using ECDSA for bytes32; /** * @notice Used to validate delegation addresses */ address public delegateSigner; /** * @dev Emitted when the signer address is updated. */ event SignerUpdated(address signer); /** * @dev Returned when a user tries to delegate with an invalid signature. */ error InvalidSignature(); /** * @dev Initializes the contract by setting a `delegateSigner`. */ constructor(address _delegateSigner) { delegateSigner = _delegateSigner; } /** * @dev Update signer address. */ function _setDelegationSigner(address _signer) internal { require(_signer != address(0), "Must input non-zero address"); delegateSigner = _signer; emit SignerUpdated(_signer); } /** * @dev See {ERC721-_afterTokenTransfer}. Adjusts votes when tokens are transferred. * * Emits a {IPRTCLVotes-DelegateVotesChanged} event. */ function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual override { _transferVotingUnits(from, to, batchSize, tokenIdToCollectionId(firstTokenId)); super._afterTokenTransfer(from, to, firstTokenId, batchSize); } /** * @dev Returns the balance of `account` for collection `collectionId`. * 1 vote per token. */ function _getVotingUnits(address account, uint256 collectionId) internal view virtual override returns (uint256) { return balanceOf(account, collectionId); } /** * @dev Override regular delegation to disable it */ function delegate(address /* delegatee */, uint256 /* collectionId */) public virtual override { revert("PRTCLCoreERC721Votes: regular delegation disabled. Please use delegation with signature."); } /** * @dev Delegation that only allows whitelisted addresses */ function delegate(address delegatee, uint256 collectionId, bytes memory signature, uint256 expirationBlock) public { if (!verifyDelegation(signature, expirationBlock, msg.sender, delegatee, collectionId)) { revert InvalidSignature(); } super.delegate(delegatee, collectionId); } /** * @dev Verify signature for delegation */ function verifyDelegation(bytes memory _signature, uint256 _expirationBlock, address _delegate, address _delegatee, uint256 _collectionId) public view returns (bool) { bytes32 messageHash = keccak256(abi.encodePacked(_delegate, _delegatee, _collectionId, _expirationBlock)); return block.number < _expirationBlock && delegateSigner == messageHash.toEthSignedMessageHash().recover(_signature); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; import "@openzeppelin/contracts/utils/Context.sol"; import "@openzeppelin/contracts/utils/Checkpoints.sol"; import "./IPRTCLVotes.sol"; /** * @dev Modified version of OpenZeppelin's {Votes} to accommodate multiple collections. * * @author Particle Collection - valdi.eth */ abstract contract PRTCLVotes is IPRTCLVotes, Context { using Checkpoints for Checkpoints.History; mapping(uint256 => mapping(address => address)) private _collectionDelegation; mapping(uint256 => mapping(address => Checkpoints.History)) private _collectionDelegateCheckpoints; mapping(uint256 => Checkpoints.History) private _collectionTotalCheckpoints; /** * @dev Returns the current amount of votes that `account` has for a given collection. */ function getVotes(address account, uint256 collectionId) public view virtual override returns (uint256) { return _collectionDelegateCheckpoints[collectionId][account].latest(); } /** * @dev Returns the amount of votes that `account` had at the end of a past block (`blockNumber`) for a given collection. * * Requirements: * * - `blockNumber` must have been already mined */ function getPastVotes(address account, uint256 blockNumber, uint256 collectionId) public view virtual override returns (uint256) { if (blockNumber >= block.number) { revert BlockNotMined(); } return _collectionDelegateCheckpoints[collectionId][account].getAtProbablyRecentBlock(blockNumber); } /** * @dev Returns the total supply of votes available at the end of a past block (`blockNumber`) for a given collection. * * NOTE: This value is the sum of all available votes, which is not necessarily the sum of all delegated votes. * Votes that have not been delegated are still part of total supply, even though they would not participate in a * vote. * * Requirements: * * - `blockNumber` must have been already mined */ function getPastTotalSupply(uint256 blockNumber, uint256 collectionId) public view virtual override returns (uint256) { if (blockNumber >= block.number) { revert BlockNotMined(); } return _collectionTotalCheckpoints[collectionId].getAtProbablyRecentBlock(blockNumber); } /** * @dev Returns the current total supply of votes for a given collection. */ function getTotalSupply(uint256 collectionId) public view virtual override returns (uint256) { return _collectionTotalCheckpoints[collectionId].latest(); } /** * @dev Returns the delegate that `account` has chosen for a given collection. */ function delegates(address account, uint256 collectionId) public view virtual override returns (address) { return _collectionDelegation[collectionId][account]; } /** * @dev Delegates votes from the sender to `delegatee` for a given collection. */ function delegate(address delegatee, uint256 collectionId) public virtual override { address account = _msgSender(); address oldDelegate = delegates(account, collectionId); _collectionDelegation[collectionId][account] = delegatee; emit DelegateChanged(account, oldDelegate, delegatee, collectionId); _moveDelegateVotes(oldDelegate, delegatee, _getVotingUnits(account, collectionId), collectionId); } /** * @dev Transfers, mints, or burns voting units. To register a mint, `from` should be zero. To register a burn, `to` * should be zero. Total supply of voting units will be adjusted with mints and burns. */ function _transferVotingUnits( address from, address to, uint256 amount, uint256 collectionId ) internal virtual { if (from == address(0)) { _collectionTotalCheckpoints[collectionId].push(_add, amount); } if (to == address(0)) { _collectionTotalCheckpoints[collectionId].push(_subtract, amount); } _moveDelegateVotes(delegates(from, collectionId), delegates(to, collectionId), amount, collectionId); } /** * @dev Moves delegated votes from one delegate to another for a given collection. */ function _moveDelegateVotes( address from, address to, uint256 amount, uint256 collectionId ) private { if (from != to && amount > 0) { if (from != address(0)) { (uint256 oldValue, uint256 newValue) = _collectionDelegateCheckpoints[collectionId][from].push(_subtract, amount); emit DelegateVotesChanged(from, oldValue, newValue, collectionId); } if (to != address(0)) { (uint256 oldValue, uint256 newValue) = _collectionDelegateCheckpoints[collectionId][to].push(_add, amount); emit DelegateVotesChanged(to, oldValue, newValue, collectionId); } } } function _add(uint256 a, uint256 b) private pure returns (uint256) { return a + b; } function _subtract(uint256 a, uint256 b) private pure returns (uint256) { return a - b; } /** * @dev Must return the voting units held by an account for a given collection. */ function _getVotingUnits(address owner, uint256 collectionId) internal view virtual returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; /// @title ERC721Multi collection interface /// @author Particle Collection - valdi.eth /// @notice Adds public facing and multi collection balanceOf and collectionId to tokenId functions /// @dev This implements an optional extension of {ERC721} that adds /// support for multiple collections and enumerability of all the /// token ids in the contract as well as all token ids owned by each account per collection. interface IERC721MultiCollection is IERC721 { /// @notice Collection ID `_collectionId` added event CollectionAdded(uint256 indexed collectionId); /// @notice New collections forbidden event NewCollectionsForbidden(); /// @dev Returned when trying to interact with a non existent collection, or redeeming funds for a sale with a token from a different collection. error InvalidCollectionId(uint256 collectionId); /// @dev Returned when trying to check balance of the zero address. error InvalidOwnerAddress(); /// @dev Returned when trying to burn more than the balance for the owner in the given collection. error InvalidBurnAmount(address owner, uint256 collectionId, uint256 tokensToBurn, uint256 balance); /// @dev Returned when trying to burn a token that is not owned by owner in the given collection. error InvalidBurnOwner(address owner, uint256 tokenId); /// @dev Determine if a collection exists. function collectionExists(uint256 collectionId) external view returns (bool); /// @notice Balance for `owner` in `collectionId` function balanceOf(address owner, uint256 collectionId) external view returns (uint256); /// @notice Get the collection ID for a given token ID function tokenIdToCollectionId(uint256 tokenId) external view returns (uint256 collectionId); /// @notice returns the total number of collections. function numberOfCollections() external view returns (uint256); /// @dev Returns the total amount of tokens stored by the contract for `collectionId`. function tokenTotalSupply(uint256 collectionId) external view returns (uint256); /// @dev Returns a token ID owned by `owner` at a given `index` of its token list on `collectionId`. /// Use along with {balanceOf} to enumerate all of ``owner``'s tokens. function tokenOfOwnerByIndex(address owner, uint256 index, uint256 collectionId) external view returns (uint256); /// @notice returns maximum size for collections. function MAX_COLLECTION_SIZE() external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; /// @author: manifold.xyz /** * @dev Royalty interface for creator core classes */ interface IManifold { /** * @dev Get royalites of a token. Returns list of receivers and basisPoints * * bytes4(keccak256('getRoyalties(uint256)')) == 0xbb3bafd6 * * => 0xbb3bafd6 = 0xbb3bafd6 */ function getRoyalties(uint256 tokenId) external view returns (address payable[] memory, uint256[] memory); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; /// use the Royalty Registry's IManifold interface for token royalties import "./IManifold.sol"; import "./IERC721MultiCollection.sol"; /// @title Interface for Core ERC721 contract for multiple collections /// @author Particle Collection - valdi.eth /// @notice Manages all collections tokens /// @dev Exposes all public functions and events needed by the Particle Collection's smart contracts /// @dev Adheres to the ERC721 standard, ERC721MultiCollection extension and Manifold for secondary royalties interface IPRTCLCollections721V1 is IERC721, IERC721MultiCollection, IManifold { /// @notice Collection ID `_collectionId` updated event CollectionDataUpdated(uint256 indexed _collectionId); /// @notice Collection ID `_collectionId` size updated event CollectionSizeUpdated(uint256 indexed _collectionId, uint256 _size); /// @notice Collection ID `_collectionId` sold through governance event CollectionSold(uint256 indexed _collectionId, address _buyer); /// @notice Collection ID `_collectionId` active event CollectionActive(uint256 indexed _collectionId); /// @notice Collection ID `_collectionId` not active event CollectionInactive(uint256 indexed _collectionId); /// @notice Collection ID `_collectionId` royalties updated event CollectionRoyaltiesUpdated(uint256 indexed _collectionId); /// @notice Collection ID `_collectionId` primary split updated event CollectionPrimarySplitUpdated(uint256 indexed _collectionId); /// @notice Collection ID `_collectionId` fully minted event CollectionFullyMinted(uint256 indexed _collectionId); /// @notice Updated base uri event BaseURIUpdated(string _baseURI); /// @notice Royalties addresses updated event RoyaltiesAddressesUpdated(address _FJMAddress, address _DAOAddress); /// @notice Randomizer contract updated event RandomizerUpdated(address _randomizer); /// @notice Collection seeds set event CollectionSeedsSet(uint256 _collectionId, uint24 _seed1, uint24 _seed2); /// @notice Returned when a collection cannot be sold, as it was already sold error AlreadySold(); /// @notice Returned when querying a non-existent token id error InvalidTokenId(uint256 tokenId); /// @notice Returned when querying coordinates for a token in a collection that is not revealed yet error CollectionNotRevealed(uint256 collectionId); /// @notice Returned when trying to mint an invalid amount of tokens (0 or more than allowed) error InvalidMintAmount(uint256 amount); /// @notice Returned when trying to mint a token for a collection that is not yet active error CollectionNotActive(uint256 collectionId); /// @notice Returned when trying to call a function without the required role error NotAllowed(); /// /// Collection data /// /// @notice Artist address for collection ID `_collectionId` function collectionIdToArtistAddress(uint256 _collectionId) external view returns (address payable); /// @notice Get the primary revenue splits for a given collection ID and sale price /// @dev Used by minter contract function getPrimaryRevenueSplits(uint256 _collectionId, uint256 _price) external view returns ( uint256 FJMRevenue_, address payable FJMAddress_, uint256 DAORevenue_, address payable DAOAddress_, uint256 artistRevenue_, address payable artistAddress_ ); /// @notice Main collection data function collectionData(uint256 _collectionId) external view returns ( uint256 nParticles, uint256 maxParticles, bool active, string memory collectionName, bool sold, uint24[] memory seeds, uint256 setSeedsAfterBlock ); /// @notice Check if the collection can be sold /// @dev Used by governance contract function collectionCanBeSold(uint256 _collectionId) external view returns (bool); /// @notice Get the proceeds for a given collection ID, sale price, sale comission and number of tokens /// @dev Used by governance contract function proceeds(uint256 _collectionId, uint256 _salePrice, uint256 _commission, uint256 _tokens) external view returns (uint256); /// @notice Get coordinates within an artwork for a given token ID function getCoordinate(uint256 _tokenId) external view returns (uint256); /// /// Collection interactions /// /// @notice Mark a collection as sold /// @dev Only callable by the governance role function markCollectionSold(uint256 _collectionId, address _buyer) external; /// @notice Mint a new token. /// Used by minter contract and BE infrastructure when handling fiat payments /// @dev Only callable by the minter role function mint(address _to, uint256 _collectionId, uint24 _amount) external returns (uint256 tokenId); /// @notice Burn tokensToRedeem tokens owned by `owner` in collection `_collectionId` /// Used when redeeming tokens for sale proceeds /// @dev Only callable by the governance role function burn(address owner, uint256 collectionId, uint256 tokensToRedeem) external returns (uint256 tokensBurnt); /// @notice Burn `tokens` owned by `owner` /// Used when redeeming tokens for sale proceeds /// @dev Only callable by the governance role function burn(address tokensOwner, uint256 collectionId, uint256[] calldata tokens) external returns (uint256 tokensBurnt); /// @notice Set the random prime seeds for a given collection ID, used to calculate token coordinates /// @dev Only callable by the Randomizer contract function setCollectionSeeds(uint256 _collectionId, uint24[2] calldata _seeds) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; /// @title Interface for the Randomizer contract version 1 /// @author Particle Collection - valdi.eth /// @notice Sets the random prime seeds for the collection on the core ERC721 contract interface IRandomizerV1 { /// @notice Sets random prime seeds for the collection /// @dev Only callable by the core ERC721 contract function setCollectionSeeds(uint256 _collectionId) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface IOperatorFilterRegistry { /** * @notice Returns true if operator is not filtered for a given token, either by address or codeHash. Also returns * true if supplied registrant address is not registered. */ function isOperatorAllowed(address registrant, address operator) external view returns (bool); /** * @notice Registers an address with the registry. May be called by address itself or by EIP-173 owner. */ function register(address registrant) external; /** * @notice Registers an address with the registry and "subscribes" to another address's filtered operators and codeHashes. */ function registerAndSubscribe(address registrant, address subscription) external; /** * @notice Registers an address with the registry and copies the filtered operators and codeHashes from another * address without subscribing. */ function registerAndCopyEntries(address registrant, address registrantToCopy) external; /** * @notice Unregisters an address with the registry and removes its subscription. May be called by address itself or by EIP-173 owner. * Note that this does not remove any filtered addresses or codeHashes. * Also note that any subscriptions to this registrant will still be active and follow the existing filtered addresses and codehashes. */ function unregister(address addr) external; /** * @notice Update an operator address for a registered address - when filtered is true, the operator is filtered. */ function updateOperator(address registrant, address operator, bool filtered) external; /** * @notice Update multiple operators for a registered address - when filtered is true, the operators will be filtered. Reverts on duplicates. */ function updateOperators(address registrant, address[] calldata operators, bool filtered) external; /** * @notice Update a codeHash for a registered address - when filtered is true, the codeHash is filtered. */ function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external; /** * @notice Update multiple codeHashes for a registered address - when filtered is true, the codeHashes will be filtered. Reverts on duplicates. */ function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external; /** * @notice Subscribe an address to another registrant's filtered operators and codeHashes. Will remove previous * subscription if present. * Note that accounts with subscriptions may go on to subscribe to other accounts - in this case, * subscriptions will not be forwarded. Instead the former subscription's existing entries will still be * used. */ function subscribe(address registrant, address registrantToSubscribe) external; /** * @notice Unsubscribe an address from its current subscribed registrant, and optionally copy its filtered operators and codeHashes. */ function unsubscribe(address registrant, bool copyExistingEntries) external; /** * @notice Get the subscription address of a given registrant, if any. */ function subscriptionOf(address addr) external returns (address registrant); /** * @notice Get the set of addresses subscribed to a given registrant. * Note that order is not guaranteed as updates are made. */ function subscribers(address registrant) external returns (address[] memory); /** * @notice Get the subscriber at a given index in the set of addresses subscribed to a given registrant. * Note that order is not guaranteed as updates are made. */ function subscriberAt(address registrant, uint256 index) external returns (address); /** * @notice Copy filtered operators and codeHashes from a different registrantToCopy to addr. */ function copyEntriesOf(address registrant, address registrantToCopy) external; /** * @notice Returns true if operator is filtered by a given address or its subscription. */ function isOperatorFiltered(address registrant, address operator) external returns (bool); /** * @notice Returns true if the hash of an address's code is filtered by a given address or its subscription. */ function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool); /** * @notice Returns true if a codeHash is filtered by a given address or its subscription. */ function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool); /** * @notice Returns a list of filtered operators for a given address or its subscription. */ function filteredOperators(address addr) external returns (address[] memory); /** * @notice Returns the set of filtered codeHashes for a given address or its subscription. * Note that order is not guaranteed as updates are made. */ function filteredCodeHashes(address addr) external returns (bytes32[] memory); /** * @notice Returns the filtered operator at the given index of the set of filtered operators for a given address or * its subscription. * Note that order is not guaranteed as updates are made. */ function filteredOperatorAt(address registrant, uint256 index) external returns (address); /** * @notice Returns the filtered codeHash at the given index of the list of filtered codeHashes for a given address or * its subscription. * Note that order is not guaranteed as updates are made. */ function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32); /** * @notice Returns true if an address has registered */ function isRegistered(address addr) external returns (bool); /** * @dev Convenience method to compute the code hash of an arbitrary contract */ function codeHashOf(address addr) external returns (bytes32); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; address constant CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS = 0x000000000000AAeB6D7670E522A718067333cd4E; address constant CANONICAL_CORI_SUBSCRIPTION = 0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6;
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {RevokableOperatorFilterer} from "./RevokableOperatorFilterer.sol"; import {CANONICAL_CORI_SUBSCRIPTION, CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS} from "./lib/Constants.sol"; /** * @title RevokableDefaultOperatorFilterer * @notice Inherits from RevokableOperatorFilterer and automatically subscribes to the default OpenSea subscription. * Note that OpenSea will disable creator earnings enforcement if filtered operators begin fulfilling orders * on-chain, eg, if the registry is revoked or bypassed. */ abstract contract RevokableDefaultOperatorFilterer is RevokableOperatorFilterer { /// @dev The constructor that is called when the contract is being deployed. constructor() RevokableOperatorFilterer(CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS, CANONICAL_CORI_SUBSCRIPTION, true) {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {UpdatableOperatorFilterer} from "./UpdatableOperatorFilterer.sol"; import {IOperatorFilterRegistry} from "./IOperatorFilterRegistry.sol"; /** * @title RevokableOperatorFilterer * @notice This contract is meant to allow contracts to permanently skip OperatorFilterRegistry checks if desired. The * Registry itself has an "unregister" function, but if the contract is ownable, the owner can re-register at * any point. As implemented, this abstract contract allows the contract owner to permanently skip the * OperatorFilterRegistry checks by calling revokeOperatorFilterRegistry. Once done, the registry * address cannot be further updated. * Note that OpenSea will still disable creator earnings enforcement if filtered operators begin fulfilling orders * on-chain, eg, if the registry is revoked or bypassed. */ abstract contract RevokableOperatorFilterer is UpdatableOperatorFilterer { /// @dev Emitted when the registry has already been revoked. error RegistryHasBeenRevoked(); /// @dev Emitted when the initial registry address is attempted to be set to the zero address. error InitialRegistryAddressCannotBeZeroAddress(); event OperatorFilterRegistryRevoked(); bool public isOperatorFilterRegistryRevoked; /// @dev The constructor that is called when the contract is being deployed. constructor(address _registry, address subscriptionOrRegistrantToCopy, bool subscribe) UpdatableOperatorFilterer(_registry, subscriptionOrRegistrantToCopy, subscribe) { // don't allow creating a contract with a permanently revoked registry if (_registry == address(0)) { revert InitialRegistryAddressCannotBeZeroAddress(); } } /** * @notice Update the address that the contract will make OperatorFilter checks against. When set to the zero * address, checks will be permanently bypassed, and the address cannot be updated again. OnlyOwner. */ function updateOperatorFilterRegistryAddress(address newRegistry) public override { if (msg.sender != owner()) { revert OnlyOwner(); } // if registry has been revoked, do not allow further updates if (isOperatorFilterRegistryRevoked) { revert RegistryHasBeenRevoked(); } operatorFilterRegistry = IOperatorFilterRegistry(newRegistry); emit OperatorFilterRegistryAddressUpdated(newRegistry); } /** * @notice Revoke the OperatorFilterRegistry address, permanently bypassing checks. OnlyOwner. */ function revokeOperatorFilterRegistry() public { if (msg.sender != owner()) { revert OnlyOwner(); } // if registry has been revoked, do not allow further updates if (isOperatorFilterRegistryRevoked) { revert RegistryHasBeenRevoked(); } // set to zero address to bypass checks operatorFilterRegistry = IOperatorFilterRegistry(address(0)); isOperatorFilterRegistryRevoked = true; emit OperatorFilterRegistryRevoked(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {IOperatorFilterRegistry} from "./IOperatorFilterRegistry.sol"; /** * @title UpdatableOperatorFilterer * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another * registrant's entries in the OperatorFilterRegistry. This contract allows the Owner to update the * OperatorFilterRegistry address via updateOperatorFilterRegistryAddress, including to the zero address, * which will bypass registry checks. * Note that OpenSea will still disable creator earnings enforcement if filtered operators begin fulfilling orders * on-chain, eg, if the registry is revoked or bypassed. * @dev This smart contract is meant to be inherited by token contracts so they can use the following: * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods. * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods. */ abstract contract UpdatableOperatorFilterer { /// @dev Emitted when an operator is not allowed. error OperatorNotAllowed(address operator); /// @dev Emitted when someone other than the owner is trying to call an only owner function. error OnlyOwner(); event OperatorFilterRegistryAddressUpdated(address newRegistry); IOperatorFilterRegistry public operatorFilterRegistry; /// @dev The constructor that is called when the contract is being deployed. constructor(address _registry, address subscriptionOrRegistrantToCopy, bool subscribe) { IOperatorFilterRegistry registry = IOperatorFilterRegistry(_registry); operatorFilterRegistry = registry; // If an inheriting token contract is deployed to a network without the registry deployed, the modifier // will not revert, but the contract will need to be registered with the registry once it is deployed in // order for the modifier to filter addresses. if (address(registry).code.length > 0) { if (subscribe) { registry.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy); } else { if (subscriptionOrRegistrantToCopy != address(0)) { registry.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy); } else { registry.register(address(this)); } } } } /** * @dev A helper function to check if the operator is allowed. */ modifier onlyAllowedOperator(address from) virtual { // Allow spending tokens from addresses with balance // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred // from an EOA. if (from != msg.sender) { _checkFilterOperator(msg.sender); } _; } /** * @dev A helper function to check if the operator approval is allowed. */ modifier onlyAllowedOperatorApproval(address operator) virtual { _checkFilterOperator(operator); _; } /** * @notice Update the address that the contract will make OperatorFilter checks against. When set to the zero * address, checks will be bypassed. OnlyOwner. */ function updateOperatorFilterRegistryAddress(address newRegistry) public virtual { if (msg.sender != owner()) { revert OnlyOwner(); } operatorFilterRegistry = IOperatorFilterRegistry(newRegistry); emit OperatorFilterRegistryAddressUpdated(newRegistry); } /** * @dev Assume the contract has an owner, but leave specific Ownable implementation up to inheriting contract. */ function owner() public view virtual returns (address); /** * @dev A helper function to check if the operator is allowed. */ function _checkFilterOperator(address operator) internal view virtual { IOperatorFilterRegistry registry = operatorFilterRegistry; // Check registry code length to facilitate testing in environments without a deployed registry. if (address(registry) != address(0) && address(registry).code.length > 0) { // under normal circumstances, this function will revert rather than return false, but inheriting contracts // may specify their own OperatorFilterRegistry implementations, which may behave differently if (!registry.isOperatorAllowed(address(this), operator)) { revert OperatorNotAllowed(operator); } } } }
{ "optimizer": { "enabled": true, "runs": 400 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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IRandomizerV1","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_collectionId","type":"uint256"}],"name":"requestCollectionSeeds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"revokeOperatorFilterRegistry","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_collectionId","type":"uint256"},{"internalType":"uint24[2]","name":"_seeds","type":"uint24[2]"}],"name":"setCollectionSeeds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_collectionId","type":"uint256"}],"name":"toggleCollectionIsActive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenIdToCollectionId","outputs":[{"internalType":"uint256","name":"collectionId","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"},{"internalType":"uint256","name":"collectionId","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"collectionId","type":"uint256"}],"name":"tokenTotalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_newBaseURI","type":"string"}],"name":"updateBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_collectionId","type":"uint256"},{"internalType":"address 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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : _bURI (string): https://api-prod.particlecollection.com/api/v1/particle-metadata/
Arg [1] : _delegationSigner (address): 0x4cb2Cb5555Fe651586d7765BED5D6bA7deBC4E81
Arg [2] : _FJMAddress (address): 0xfCec40AA7D9Ef4438510366E53B98690878862E5
Arg [3] : _DAOAddress (address): 0x3456B98963eADCaed6534A2bFf6D3D56c7BA8038
-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [1] : 0000000000000000000000004cb2cb5555fe651586d7765bed5d6ba7debc4e81
Arg [2] : 000000000000000000000000fcec40aa7d9ef4438510366e53b98690878862e5
Arg [3] : 0000000000000000000000003456b98963eadcaed6534a2bff6d3d56c7ba8038
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000041
Arg [5] : 68747470733a2f2f6170692d70726f642e7061727469636c65636f6c6c656374
Arg [6] : 696f6e2e636f6d2f6170692f76312f7061727469636c652d6d65746164617461
Arg [7] : 2f00000000000000000000000000000000000000000000000000000000000000
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