More Info
Private Name Tags
ContractCreator
TokenTracker
Latest 25 from a total of 26 transactions
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| Set Approval For... | 142514886 | 23 days ago | IN | 0 ETH | 0.000000011074 | ||||
| Set Approval For... | 141927801 | 37 days ago | IN | 0 ETH | 0.000000006339 | ||||
| Safe Transfer Fr... | 141286589 | 52 days ago | IN | 0 ETH | 0.000000001653 | ||||
| Set Approval For... | 141266474 | 52 days ago | IN | 0 ETH | 0.000000007298 | ||||
| Set Approval For... | 140299311 | 74 days ago | IN | 0 ETH | 0.0000000029 | ||||
| Purchase | 139969583 | 82 days ago | IN | 0.00069 ETH | 0.000000019584 | ||||
| Set Approval For... | 139499497 | 93 days ago | IN | 0 ETH | 0.000000003945 | ||||
| Set Approval For... | 139343306 | 97 days ago | IN | 0 ETH | 0.000000006471 | ||||
| Set Approval For... | 139317988 | 97 days ago | IN | 0 ETH | 0.000000006931 | ||||
| Set Approval For... | 138889908 | 107 days ago | IN | 0 ETH | 0.000000012824 | ||||
| Set Approval For... | 138391315 | 119 days ago | IN | 0 ETH | 0.000000011773 | ||||
| Set Approval For... | 137249822 | 145 days ago | IN | 0 ETH | 0.000000032183 | ||||
| Set Approval For... | 137238726 | 145 days ago | IN | 0 ETH | 0.000000016591 | ||||
| Set Approval For... | 136075852 | 172 days ago | IN | 0 ETH | 0.000000023995 | ||||
| Set Approval For... | 135640672 | 182 days ago | IN | 0 ETH | 0.000000024671 | ||||
| Purchase | 132347564 | 259 days ago | IN | 0.00069 ETH | 0.000000184992 | ||||
| Set Approval For... | 131976127 | 267 days ago | IN | 0 ETH | 0.000002469484 | ||||
| Set Approval For... | 131975889 | 267 days ago | IN | 0 ETH | 0.000001380423 | ||||
| Purchase | 131851208 | 270 days ago | IN | 0.00069 ETH | 0.00000026812 | ||||
| Purchase | 131850960 | 270 days ago | IN | 0.00069 ETH | 0.000000371297 | ||||
| Purchase | 131850811 | 270 days ago | IN | 0.00069 ETH | 0.000000500014 | ||||
| Purchase | 131773032 | 272 days ago | IN | 0.00069 ETH | 0.000000025536 | ||||
| Set Approval For... | 131625928 | 275 days ago | IN | 0 ETH | 0.000000574076 | ||||
| Transfer From | 131454362 | 279 days ago | IN | 0 ETH | 0.000000039664 | ||||
| Set Approval For... | 130970232 | 290 days ago | IN | 0 ETH | 0.000000069094 |
Latest 25 internal transactions (View All)
Advanced mode:
| Parent Transaction Hash | Block | From | To | |||
|---|---|---|---|---|---|---|
| 139969583 | 82 days ago | 0.000276 ETH | ||||
| 139969583 | 82 days ago | 0.000276 ETH | ||||
| 139969583 | 82 days ago | 0.000138 ETH | ||||
| 132347564 | 259 days ago | 0.000276 ETH | ||||
| 132347564 | 259 days ago | 0.000276 ETH | ||||
| 132347564 | 259 days ago | 0.000138 ETH | ||||
| 131851208 | 270 days ago | 0.000276 ETH | ||||
| 131851208 | 270 days ago | 0.000276 ETH | ||||
| 131851208 | 270 days ago | 0.000138 ETH | ||||
| 131850960 | 270 days ago | 0.000276 ETH | ||||
| 131850960 | 270 days ago | 0.000276 ETH | ||||
| 131850960 | 270 days ago | 0.000138 ETH | ||||
| 131850811 | 270 days ago | 0.000276 ETH | ||||
| 131850811 | 270 days ago | 0.000276 ETH | ||||
| 131850811 | 270 days ago | 0.000138 ETH | ||||
| 131773032 | 272 days ago | 0.000276 ETH | ||||
| 131773032 | 272 days ago | 0.000276 ETH | ||||
| 131773032 | 272 days ago | 0.000138 ETH | ||||
| 130905923 | 292 days ago | 0.000276 ETH | ||||
| 130905923 | 292 days ago | 0.000276 ETH | ||||
| 130905923 | 292 days ago | 0.000138 ETH | ||||
| 130801310 | 294 days ago | 0.000276 ETH | ||||
| 130801310 | 294 days ago | 0.000276 ETH | ||||
| 130801310 | 294 days ago | 0.000138 ETH | ||||
| 130419005 | 303 days ago | 0.000276 ETH |
Cross-Chain Transactions
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Minimal Proxy Contract for 0x6eadcb3840de4981882e93c39b3998185bfbe8a5
Contract Name:
WritingEditions
Compiler Version
v0.8.19+commit.7dd6d404
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.8.0; /// > [[[[[[[[[[[ Imports ]]]]]]]]]]] import "./interface/IWritingEditions.sol"; import "./interface/IWritingEditionsFactory.sol"; import "../ERC7015/ERC7015.sol"; import "../observability/interface/IObservability.sol"; import "../fee-configuration/interface/IFeeConfiguration.sol"; import "../renderer/interface/IRenderer.sol"; import "../treasury/Rewards.sol"; import "../treasury/interface/ITreasuryConfiguration.sol"; import "../treasury/interface/ITreasury.sol"; import "../treasury/interface/ITributaryRegistry.sol"; import "../lib/Ownable.sol"; import "../lib/ERC721/ERC721.sol"; import "../lib/ERC165/ERC165.sol"; import "../lib/ERC721/interface/IERC721.sol"; import "../lib/ERC2981/interface/IERC2981.sol"; import "../lib/transaction-reentrancy-guard/TransactionReentrancyGuard.sol"; /// > [[[[[[[[[[[ External Library Imports ]]]]]]]]]]] import "openzeppelin-contracts/contracts/security/ReentrancyGuard.sol"; import "openzeppelin-contracts/contracts/utils/Base64.sol"; import "openzeppelin-contracts/contracts/utils/Strings.sol"; /** * @title WritingEditions * @author MirrorXYZ * @custom:security-contact [email protected] */ contract WritingEditions is ERC7015, Ownable, TransactionReentrancyGuard, ReentrancyGuard, ERC721, IERC721Metadata, IERC2981, IWritingEditions, IWritingEditionEvents, IObservabilityEvents { /// > [[[[[[[[[[[ Version ]]]]]]]]]]] /// @notice Version. uint8 public immutable override VERSION = 3; /// > [[[[[[[[[[[ Authorization ]]]]]]]]]]] /// @notice Address that deploys and initializes clones. address public immutable override factory; /// > [[[[[[[[[[[ Configuration ]]]]]]]]]]] /// @notice Address for Mirror treasury configuration. address public immutable override treasuryConfiguration; /// @notice Address for Mirror's observability contract. address public immutable override o11y; /// > [[[[[[[[[[[ ERC721 Metadata ]]]]]]]]]]] /// @notice Token name. string public override name; /// @notice Token symbol. string public override symbol; /// @notice Base URI for description. string internal _baseDescriptionURI; /// > [[[[[[[[[[[ Token Data ]]]]]]]]]]] /// @notice Total supply of editions. Used to calculate next tokenId. uint256 public override totalSupply; /// @notice Token text content, stored in Arweave. string public override contentURI; /// @notice Token image content, stored in IPFS. string public override imageURI; /// @notice Token price, set by the owner. uint256 public override price; /// @notice Token limit, set by the owner. uint256 public override limit; /// @notice Account that will receive funds from sales. address public override fundingRecipient; /// > [[[[[[[[[[[ Royalty Info (ERC2981) ]]]]]]]]]]] /// @notice Account that will receive royalties. address public override royaltyRecipient; /// @notice Royalty basis points. uint256 public override royaltyBPS; /// > [[[[[[[[[[[ Rendering ]]]]]]]]]]] /// @notice Address for a rendering contract, if set, calls to /// `tokenURI(uint256)` are forwarded to this address. address public override renderer; /// > [[[[[[[[[[[ Rewards ]]]]]]]]]]] /// @notice Address for the first minter if they are not the creator. address public override firstMinter; /// > [[[[[[[[[[[ Constructor ]]]]]]]]]]] /// @notice Implementation logic for clones. /// @param _factory the factory contract deploying clones with this implementation. /// @param _treasuryConfiguration Mirror treasury configuration. /// @param _o11y contract for observability. constructor( address _factory, address _treasuryConfiguration, address _o11y ) Ownable(address(0)) TransactionReentrancyGuard(true) ERC7015("WritingEditions", "1") { // Assert not the zero-address. require(_factory != address(0), "must set factory"); // Store factory. factory = _factory; // Assert not the zero-address. require( _treasuryConfiguration != address(0), "must set treasury configuration" ); // Store treasury configuration. treasuryConfiguration = _treasuryConfiguration; // Assert not the zero-address. require(_o11y != address(0), "must set observability"); // Store observability. o11y = _o11y; } /// > [[[[[[[[[[[ Initializing ]]]]]]]]]]] /// @notice Initialize a clone with a signature by storing edition parameters. /// Called only by the factory. Mints the first edition to `tokenRecipient`. /// @param _creator the token creator /// @param structHash the salt parameter for ERC7015 /// @param signature the signature of the creator /// @param edition edition parameters used to deploy the clone. /// @param tokenRecipient account that will receive the first minted token. /// @param message message sent with the token purchase, not stored. function initializeWithSignature( address _creator, bytes32 structHash, bytes calldata signature, WritingEdition memory edition, address tokenRecipient, string memory message, address mintReferral, bool _guardOn, address sender ) external payable override nonReentrant { _validateSignature(_creator, structHash, signature); // Set first minter. if (sender != _creator) { firstMinter = sender; } _initialize( _creator, edition, tokenRecipient, message, mintReferral, _guardOn ); } /// @notice Initialize a clone by storing edition parameters. Called only /// by the factory. Mints the first edition to `tokenRecipient`. /// @param _creator owner of the clone. /// @param edition edition parameters used to deploy the clone. /// @param tokenRecipient account that will receive the first minted token. /// @param message message sent with the token purchase, not stored. function initialize( address _creator, WritingEdition memory edition, address tokenRecipient, string memory message, address mintReferral, bool _guardOn ) external payable override nonReentrant { _initialize( _creator, edition, tokenRecipient, message, mintReferral, _guardOn ); } function _initialize( address _creator, WritingEdition memory edition, address tokenRecipient, string memory message, address mintReferral, bool _guardOn ) internal { // Only factory can call this function. require(msg.sender == factory, "unauthorized caller"); // Store ERC721 metadata. name = edition.name; symbol = edition.symbol; // Store edition data. imageURI = edition.imageURI; contentURI = edition.contentURI; price = edition.price; limit = edition.limit; fundingRecipient = edition.fundingRecipient; renderer = edition.renderer; // Store owner. _setInitialOwner(_creator); // Store guard status. _setGuard(_guardOn); // Mint initial token to recipient if (tokenRecipient != address(0)) { _purchase(tokenRecipient, message, mintReferral); } } /// @notice Base description URI. function baseDescriptionURI() external view override returns (string memory) { return _getBaseDescriptionURI(); } /// @notice Token description. function description() public view override returns (string memory) { return string( abi.encodePacked( _getBaseDescriptionURI(), Strings.toString(block.chainid), "/", _addressToString(address(this)) ) ); } /// > [[[[[[[[[[[ View Functions ]]]]]]]]]]] /// @notice Helper function to get owners for a list of tokenIds. /// @dev Could revert if `tokenIds` is too long. /// @param tokenIds a list of token-ids to check ownership of. /// @return owners a list of token-id owners, address(0) if token is not minted function ownerOf( uint256[] memory tokenIds ) external view override returns (address[] memory owners) { owners = new address[](tokenIds.length); for (uint256 i = 0; i < tokenIds.length; i++) { owners[i] = _owners[tokenIds[i]]; } } /// > [[[[[[[[[[[ Funding Recipient ]]]]]]]]]]] /// @notice Set a new funding recipient. /// @param _fundingRecipient new funding recipient. function setFundingRecipient( address _fundingRecipient ) external override onlyOwner { // slither-disable-next-line reentrancy-no-eth IObservability(o11y).emitFundingRecipientSet( // oldFundingRecipient fundingRecipient, // newFundingRecipient _fundingRecipient ); fundingRecipient = _fundingRecipient; } /// > [[[[[[[[[[[ Price ]]]]]]]]]]] /// @notice Set a new price. /// @param _price new price. function setPrice(uint256 _price) external override onlyOwner { // slither-disable-next-line reentrancy-no-eth IObservability(o11y).emitPriceSet( // oldPrice price, // newPrice _price ); price = _price; } /// @notice Set a new base description URI. /// @param newBaseDescriptionURI new base description URI function setBaseDescriptionURI( string memory newBaseDescriptionURI ) external override onlyOwner { // slither-disable-next-line reentrancy-no-eth IObservability(o11y).emitBaseDescriptionURISet( // oldDescriptionURI _getBaseDescriptionURI(), // oldDescriptionURI newBaseDescriptionURI ); _baseDescriptionURI = newBaseDescriptionURI; } /// @notice Turn Transaction Level Reentrancy Guard on/off. function toggleGuard() external override onlyOwner { _toggleGuard(); } /// > [[[[[[[[[[[ Purchase ]]]]]]]]]]] /// @notice Purchase a token. /// @param tokenRecipient the account to receive the token. /// @param message an optional message during purchase, not stored. /// @param mintReferral the account that referred the purchase. /// @return tokenId the id of the minted token. function purchase( address tokenRecipient, string memory message, address mintReferral ) external payable override guard nonReentrant returns (uint256 tokenId) { return _purchase(tokenRecipient, message, mintReferral); } /// > [[[[[[[[[[[ Mint ]]]]]]]]]]] /// @notice Mint an edition /// @dev throws if called by a non-owner /// @param tokenRecipient the account to receive the edition function mint( address tokenRecipient ) external override onlyOwner returns (uint256 tokenId) { tokenId = _getTokenIdAndMint(tokenRecipient); } /// > [[[[[[[[[[[ Limit ]]]]]]]]]]] /// @notice Allows the owner to set a global limit on the total supply /// @dev throws if attempting to increase the limit /// @param newLimit new mint limit. function setLimit(uint256 newLimit) external override onlyOwner { // Enforce that the limit should only ever decrease once set. require( newLimit >= totalSupply && (limit == 0 || newLimit < limit), "limit must be < than current limit" ); // Announce the change in limit. // slither-disable-next-line reentrancy-no-eth IObservability(o11y).emitWritingEditionLimitSet( // oldLimit limit, // newLimit newLimit ); // Update the limit. limit = newLimit; } /// @notice Set the limit to the last minted tokenId. function setMaxLimit() external override onlyOwner { // Announce the change in limit. // slither-disable-next-line reentrancy-no-eth IObservability(o11y).emitWritingEditionLimitSet( // oldLimit limit, // newLimit totalSupply ); // Update the limit. limit = totalSupply; } /// > [[[[[[[[[[[ ERC2981 Methods ]]]]]]]]]]] /// @notice Called with the sale price to determine how much royalty // is owed and to whom /// @param _tokenId - the NFT asset queried for royalty information /// @param _salePrice - the sale price of the NFT asset specified by _tokenId /// @return receiver - address of who should be sent the royalty payment /// @return royaltyAmount - the royalty payment amount for _salePrice function royaltyInfo( uint256 _tokenId, uint256 _salePrice ) external view override returns (address receiver, uint256 royaltyAmount) { receiver = royaltyRecipient; royaltyAmount = (_salePrice * royaltyBPS) / 10_000; } /// @notice Get royalties information. /// @param royaltyRecipient_ the address that will receive royalties /// @param royaltyBPS_ the royalty amount in basis points (bps) function setRoyaltyInfo( address royaltyRecipient_, uint256 royaltyBPS_ ) external override onlyOwner { require( royaltyBPS_ <= 10_000, "bps must be less than or equal to 10,000" ); // slither-disable-next-line reentrancy-no-eth IObservability(o11y).emitRoyaltyChange( // oldRoyaltyRecipient royaltyRecipient, // oldRoyaltyBPS royaltyBPS, // newRoyaltyRecipient royaltyRecipient_, // newRoyaltyBPS royaltyBPS_ ); royaltyRecipient = royaltyRecipient_; royaltyBPS = royaltyBPS_; } /// > [[[[[[[[[[[ Rendering Methods ]]]]]]]]]]] /// @notice Set the renderer address /// @dev Throws if renderer is not the zero address /// @param _renderer contract responsible for rendering tokens. function setRenderer(address _renderer) external override onlyOwner { require(renderer == address(0), "renderer already set"); renderer = _renderer; IObservability(o11y).emitRendererSet( // renderer _renderer ); } /// @notice Get contract metadata /// @dev If a renderer is set, attempt return the renderer's metadata. function contractURI() external view override returns (string memory) { if (renderer != address(0)) { // slither-disable-next-line unused-return try IRenderer(renderer).contractURI() returns ( // slither-disable-next-line uninitialized-local string memory result ) { return result; } catch { // Fallback if the renderer does not implement contractURI return _generateContractURI(); } } return _generateContractURI(); } /// @notice Get `tokenId` URI or data /// @dev If a renderer is set, call renderer's tokenURI /// @param tokenId The tokenId used to request data function tokenURI( uint256 tokenId ) external view override returns (string memory) { require(_exists(tokenId), "ERC721: query for nonexistent token"); if (renderer != address(0)) { return IRenderer(renderer).tokenURI(tokenId); } // slither-disable-next-line uninitialized-local bytes memory editionNumber; if (limit != 0) { editionNumber = abi.encodePacked("/", Strings.toString(limit)); } string memory json = Base64.encode( bytes( string( abi.encodePacked( '{"name": "', _escapeQuotes(name), " ", Strings.toString(tokenId), editionNumber, '", "description": "', _escapeQuotes(description()), '", "content": "ar://', contentURI, '", "image": "ipfs://', imageURI, '", "attributes":[{ "trait_type": "Serial", "value": ', Strings.toString(tokenId), "}] }" ) ) ) ); return string(abi.encodePacked("data:application/json;base64,", json)); } /// > [[[[[[[[[[[ IERC165 Method ]]]]]]]]]]] /// @param interfaceId The interface identifier, as specified in ERC-165 function supportsInterface( bytes4 interfaceId ) public pure override returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || interfaceId == type(IERC165).interfaceId || interfaceId == type(IERC2981).interfaceId; } /// > [[[[[[[[[[[ Internal Functions ]]]]]]]]]]] function _generateContractURI() internal view returns (string memory) { string memory json = Base64.encode( bytes( string( abi.encodePacked( '{"name": "', _escapeQuotes(name), '", "description": "', _escapeQuotes(description()), '", "content": "ar://', contentURI, '", "image": "ipfs://', imageURI, '", "seller_fee_basis_points": ', Strings.toString(royaltyBPS), ', "fee_recipient": "', _addressToString(royaltyRecipient), '", "external_link": "', _getBaseDescriptionURI(), '"}' ) ) ) ); return string(abi.encodePacked("data:application/json;base64,", json)); } /// @dev Emit a transfer event from observability contract. function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { IObservability(o11y).emitTransferEvent(from, to, tokenId); } function _purchase( address tokenRecipient, string memory message, address mintReferral ) internal returns (uint256 tokenId) { // Mint token, and get a tokenId. tokenId = _getTokenIdAndMint(tokenRecipient); // Get fee. uint256 flatFeeAmount = 0; address feeConfiguration = _getFeeConfiguration(); if ( feeConfiguration != address(0) && IFeeConfiguration(feeConfiguration).flatFeeOn() ) { // Calculate the fee on the current balance flatFeeAmount = IFeeConfiguration(feeConfiguration).flatFeeAmount(); } // Emit event through observability contract. IObservability(o11y).emitWritingEditionPurchased( // tokenId tokenId, // recipient tokenRecipient, // price price, // message message, // flatFeeAmount flatFeeAmount ); _withdraw(fundingRecipient, msg.value, flatFeeAmount, mintReferral); } function _getFeeConfiguration() internal returns (address) { return ITreasuryConfiguration(treasuryConfiguration).feeConfiguration(); } function _getTributaryRegistry() internal returns (address) { return ITreasuryConfiguration(treasuryConfiguration).tributaryRegistry(); } /// @dev Withdraws `amount` to `fundsRecipient`. Sends fee to treasury // if fees are on. function _withdraw( address fundsRecipient, uint256 amount, uint256 flatFeeAmount, address mintReferral ) internal { // If the fee is not zero, attempt to send it to the treasury. // If the treasury is not set, do not pay the fee. address treasury = ITreasuryConfiguration(treasuryConfiguration) .treasury(); if (flatFeeAmount != 0 && treasury != address(0)) { require(amount == price + flatFeeAmount, "invalid amount"); ( uint256 creatorReward, uint256 fee, uint256 mintReferralReward, uint256 firstMinterReward ) = Rewards.getRewards( mintReferral, price == 0, // free mint? flatFeeAmount ); if (firstMinter == address(0)) { // If the first minter is the creator, send them first minter reward. _sendEther( payable(fundsRecipient), price + creatorReward + firstMinterReward ); } else { _sendEther(payable(firstMinter), firstMinterReward); _sendEther(payable(fundsRecipient), price + creatorReward); } // Send fee to treasury. _sendEther(payable(treasury), fee); emit RewardsDistributed( creatorReward, fee, mintReferralReward, firstMinterReward, fundsRecipient, // creator mintReferral, firstMinter ); // Send referral reward to referral. if (mintReferralReward != 0) { _sendEther(payable(mintReferral), mintReferralReward); } } else { require(amount == price, "invalid amount"); _sendEther(payable(fundsRecipient), amount); } } function _sendEther(address payable recipient, uint256 amount) internal { // Ensure sufficient balance. require(address(this).balance >= amount, "insufficient balance"); // Send the value. // slither-disable-next-line low-level-calls (bool success, ) = recipient.call{value: amount, gas: gasleft()}(""); require(success, "recipient reverted"); } /// @dev Mints and returns tokenId function _getTokenIdAndMint( address tokenRecipient ) internal returns (uint256 tokenId) { // Increment totalSupply to get next id and store tokenId. tokenId = ++totalSupply; // check that there are still tokens available to purchase // zero and max uint256 represent infinite minting require( limit == 0 || limit == type(uint256).max || tokenId < limit + 1, "sold out" ); // mint a new token for the tokenRecipient, using the `tokenId`. _mint(tokenRecipient, tokenId); } function _getBaseDescriptionURI() internal view returns (string memory) { return bytes(_baseDescriptionURI).length == 0 ? IWritingEditionsFactory(factory).baseDescriptionURI() : _baseDescriptionURI; } // https://ethereum.stackexchange.com/questions/8346/convert-address-to-string/8447#8447 function _addressToString(address x) internal pure returns (string memory) { bytes memory s = new bytes(40); for (uint256 i = 0; i < 20; i++) { bytes1 b = bytes1( uint8(uint256(uint160(x)) / (2 ** (8 * (19 - i)))) ); bytes1 hi = bytes1(uint8(b) / 16); bytes1 lo = bytes1(uint8(b) - 16 * uint8(hi)); s[2 * i] = _char(hi); s[2 * i + 1] = _char(lo); } return string(abi.encodePacked("0x", s)); } function _char(bytes1 b) internal pure returns (bytes1 c) { if (uint8(b) < 10) return bytes1(uint8(b) + 0x30); else return bytes1(uint8(b) + 0x57); } function _escapeQuotes( string memory str ) internal pure returns (string memory) { bytes memory strBytes = bytes(str); uint8 quotesCount = 0; for (uint8 i = 0; i < strBytes.length; i++) { if (strBytes[i] == '"') { quotesCount++; } } if (quotesCount > 0) { bytes memory escapedBytes = new bytes( strBytes.length + (quotesCount) ); uint256 index; for (uint8 i = 0; i < strBytes.length; i++) { if (strBytes[i] == '"') { escapedBytes[index++] = "\\"; } escapedBytes[index++] = strBytes[i]; } return string(escapedBytes); } return str; } }
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface IWritingEditionEvents {
event RoyaltyChange(
address indexed oldRoyaltyRecipient,
uint256 oldRoyaltyBPS,
address indexed newRoyaltyRecipient,
uint256 newRoyaltyBPS
);
event RendererSet(address indexed renderer);
event WritingEditionLimitSet(uint256 oldLimit, uint256 newLimit);
event PriceSet(uint256 price);
event RewardsDistributed(
uint256 creatorReward,
uint256 fee,
uint256 mintReferralReward,
uint256 firstMinterReward,
address creator,
address mintReferral,
address firstMinter
);
}
interface IWritingEditions {
struct WritingEdition {
string name;
string symbol;
string description;
string imageURI;
string contentURI;
uint256 price;
uint256 limit;
address fundingRecipient;
address renderer;
uint256 nonce;
}
function VERSION() external view returns (uint8);
function factory() external returns (address);
function treasuryConfiguration() external returns (address);
function o11y() external returns (address);
function baseDescriptionURI() external view returns (string memory);
function description() external view returns (string memory);
function totalSupply() external view returns (uint256);
function price() external view returns (uint256);
function limit() external view returns (uint256);
function contentURI() external view returns (string memory);
function imageURI() external view returns (string memory);
function fundingRecipient() external returns (address);
function royaltyRecipient() external returns (address);
function royaltyBPS() external returns (uint256);
function renderer() external view returns (address);
function firstMinter() external view returns (address);
function ownerOf(
uint256[] memory tokenIds
) external view returns (address[] memory owners);
function initializeWithSignature(
address _creator,
bytes32 structHash,
bytes calldata signature,
WritingEdition memory edition,
address tokenRecipient,
string memory message,
address mintReferral,
bool _guardOn,
address sender
) external payable;
function initialize(
address _creator,
WritingEdition memory edition,
address recipient,
string memory message,
address mintReferral,
bool _guard
) external payable;
function setFundingRecipient(address fundingRecipient_) external;
function setPrice(uint256 price_) external;
function setBaseDescriptionURI(string memory _baseDescriptionURI) external;
function setLimit(uint256 limit_) external;
function setMaxLimit() external;
function setRoyaltyInfo(
address royaltyRecipient_,
uint256 royaltyPercentage_
) external;
function toggleGuard() external;
function purchase(
address tokenRecipient,
string memory message,
address mintReferral
) external payable returns (uint256 tokenId);
function mint(address tokenRecipient) external returns (uint256 tokenId);
function setRenderer(address renderer_) external;
function contractURI() external view returns (string memory);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
/// > [[[[[[[[[[[ Imports ]]]]]]]]]]]
import "./IWritingEditions.sol";
interface IWritingEditionsFactoryEvents {
event NewImplementation(
address indexed oldImplementation,
address indexed newImplementation
);
event EditionsDeployed(
address indexed owner,
address indexed clone,
address indexed implementation
);
}
interface IWritingEditionsFactory {
function VERSION() external view returns (uint8);
function implementation() external view returns (address);
function o11y() external view returns (address);
function treasuryConfiguration() external view returns (address);
function guardOn() external view returns (bool);
function salts(bytes32 salt) external view returns (bool);
function maxLimit() external view returns (uint256);
function baseDescriptionURI() external view returns (string memory);
function predictDeterministicAddress(
address implementation_,
bytes32 salt
) external view returns (address);
function setLimit(uint256 _maxLimit) external;
function setGuard(bool _guardOn) external;
function setImplementation(address _implementation) external;
function create(
IWritingEditions.WritingEdition memory edition_
) external returns (address clone);
function createWithSignature(
address owner_,
IWritingEditions.WritingEdition memory edition_,
uint8 v,
bytes32 r,
bytes32 s,
address recipient,
string memory message,
address mintReferral
) external payable returns (address clone);
function setTributary(address clone, address _tributary) external;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "openzeppelin-contracts/contracts/utils/cryptography/EIP712.sol";
import "openzeppelin-contracts/contracts/utils/cryptography/ECDSA.sol";
import "openzeppelin-contracts/contracts/interfaces/IERC1271.sol";
import "solady/utils/LibString.sol";
/// @notice ERC-7015: NFT Creator Attribution
/// @notice https://eips.ethereum.org/EIPS/eip-7015
/// @author indreams.eth
abstract contract ERC7015 is EIP712 {
error InvalidCreatorAttributionSignature();
error NameAndVersionTooLong();
error InvalidCreator();
event CreatorAttribution(
bytes32 structHash,
string domainName,
string version,
address creator,
bytes signature
);
/// @notice Define magic value to verify smart contract signatures (ERC1271).
bytes4 internal constant MAGIC_VALUE =
bytes4(keccak256("isValidSignature(bytes32,bytes)"));
bytes32 public constant TYPEHASH =
keccak256("TokenCreation(bytes32 structHash)");
bytes32 public immutable packedDomainNameAndVersion;
constructor(
string memory name,
string memory version
) EIP712(name, version) {
packedDomainNameAndVersion = LibString.packTwo(name, version);
if (packedDomainNameAndVersion == bytes32(0))
revert NameAndVersionTooLong();
}
function _validateSignature(
address creator,
bytes32 structHash,
bytes calldata signature
) internal {
if (!_isValid(structHash, creator, signature))
revert InvalidCreatorAttributionSignature();
(string memory _domainName, string memory _domainVersion) = LibString
.unpackTwo(packedDomainNameAndVersion);
emit CreatorAttribution(
structHash,
_domainName,
_domainVersion,
creator,
signature
);
}
function _isValid(
bytes32 structHash,
address signer,
bytes calldata signature
) internal view returns (bool) {
if (signer == address(0)) revert InvalidCreator();
bytes32 digest = _hashTypedDataV4(
keccak256(abi.encode(TYPEHASH, structHash))
);
// If the signer is a contract, attempt to validate the
// signature using EIP-1271.
if (signer.code.length != 0) {
// slither-disable-next-line unused-return
try IERC1271(signer).isValidSignature(digest, signature) returns (
// slither-disable-next-line uninitialized-local
bytes4 magicValue
) {
return MAGIC_VALUE == magicValue;
} catch {
return false;
}
}
address recoveredSigner = ECDSA.recover(digest, signature);
return recoveredSigner == signer;
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface IObservabilityEvents {
/// > [[[[[[[[[[[ Factory events ]]]]]]]]]]]
event CloneDeployed(
address indexed factory,
address indexed owner,
address indexed clone
);
event TributarySet(
address indexed factory,
address indexed clone,
address oldTributary,
address indexed newTributary
);
event FactoryLimitSet(
address indexed factory,
uint256 oldLimit,
uint256 newLimit
);
event FactoryGuardSet(bool guard);
event FactoryImplementationSet(
address indexed factory,
address indexed oldImplementation,
address indexed newImplementation
);
/// > [[[[[[[[[[[ Clone events ]]]]]]]]]]]
event WritingEditionPurchased(
address indexed clone,
uint256 tokenId,
address indexed recipient,
uint256 price,
string message,
uint256 flatFeeAmount
);
event Transfer(
address indexed clone,
address indexed from,
address indexed to,
uint256 tokenId
);
event RoyaltyChange(
address indexed clone,
address indexed oldRoyaltyRecipient,
uint256 oldRoyaltyBPS,
address indexed newRoyaltyRecipient,
uint256 newRoyaltyBPS
);
event RendererSet(address indexed clone, address indexed renderer);
event WritingEditionLimitSet(
address indexed clone,
uint256 oldLimit,
uint256 newLimit
);
event PriceSet(address indexed clone, uint256 oldLimit, uint256 newLimit);
event FundingRecipientSet(
address indexed clone,
address indexed oldFundingRecipient,
address indexed newFundingRecipient
);
event BaseDescriptionURISet(
address indexed clone,
string oldBaseDescriptionURI,
string newBaseDescriptionURI
);
}
interface IObservability {
function emitDeploymentEvent(address owner, address clone) external;
function emitTributarySet(
address clone,
address oldTributary,
address newTributary
) external;
function emitFactoryGuardSet(bool guard) external;
function emitFactoryImplementationSet(
address oldImplementation,
address newImplementation
) external;
function emitFactoryLimitSet(uint256 oldLimit, uint256 newLimit) external;
function emitTransferEvent(
address from,
address to,
uint256 tokenId
) external;
function emitWritingEditionPurchased(
uint256 tokenId,
address recipient,
uint256 price,
string memory message,
uint256 flatFeeAmount
) external;
function emitRoyaltyChange(
address oldRoyaltyRecipient,
uint256 oldRoyaltyBPS,
address newRoyaltyRecipient,
uint256 newRoyaltyBPS
) external;
function emitRendererSet(address renderer) external;
function emitWritingEditionLimitSet(
uint256 oldLimit,
uint256 newLimit
) external;
function emitFundingRecipientSet(
address oldFundingRecipient,
address newFundingRecipient
) external;
function emitPriceSet(uint256 oldPrice, uint256 newPrice) external;
function emitBaseDescriptionURISet(
string memory oldBaseDescriptionURI,
string memory newBaseDescriptionURI
) external;
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface IFeeConfigurationEvents {
event FeeSwitch(bool on);
event FlatFeeSwitch(bool on);
event MinimumFee(uint16 fee);
event MaximumFee(uint16 fee);
event FlatFeeAmount(uint256 fee);
}
interface IFeeConfiguration {
function on() external returns (bool);
function flatFeeOn() external returns (bool);
function flatFeeAmount() external returns (uint256);
function maximumFee() external returns (uint16);
function minimumFee() external returns (uint16);
function switchFee() external;
function setMinimumFee(uint16 newFee) external;
function setMaximumFee(uint16 newFe) external;
function valid(uint16 feeBPS) external view returns (bool);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface IRenderer {
function tokenURI(uint256 tokenId) external view returns (string calldata);
function contractURI() external view returns (string calldata);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
/**
* @title Rewards
* @notice Calculates rewards for free and paid mints
*/
library Rewards {
error FeeTooLowError();
/// @notice 40% creator reward for free mint
uint256 constant _FREE_CREATOR_REWARD_PERCENTAGE = 40_00;
/// @notice 10% mint referral reward for free mint
uint256 constant _FREE_MINT_REFERRAL_REWARD_PERCENTAGE = 10_00;
/// @notice 30% fee for free mint
uint256 constant _FREE_FEE_PERCENTAGE = 30_00;
/// @notice 20% first minter reward for free mint
uint256 constant _FREE_FIRST_MINTER_REWARD_PECENTAGE = 20_00;
/// @notice 25% creator referral reward for paid mint
uint256 constant _PAID_MINT_REFERRAL_REWARD_PERCENTAGE = 25_00;
/// @notice 50% mint referral reward for paid mint
uint256 constant _PAID_FEE_PERCENTAGE = 50_00;
/// @notice 25% fee for paid mint
uint256 constant _PAID_FIRST_MINTER_REWARD_PERCENTAGE = 25_00;
function getRewards(
address mintReferral,
bool freeMint,
uint256 flatFeeAmount
) external pure returns (uint256, uint256, uint256, uint256) {
if (flatFeeAmount < 10) revert FeeTooLowError();
if (freeMint) {
return _getFreeMintRewards(mintReferral, flatFeeAmount);
}
return _getPaidMintRewards(mintReferral, flatFeeAmount);
}
function _getFreeMintRewards(
address mintReferral,
uint256 flatFeeAmount
) internal pure returns (uint256, uint256, uint256, uint256) {
uint256 mintReferralReward = 0;
uint256 creatorReward = (flatFeeAmount *
_FREE_CREATOR_REWARD_PERCENTAGE) / 100_00;
uint256 firstMinterReward = (flatFeeAmount *
_FREE_FIRST_MINTER_REWARD_PECENTAGE) / 100_00;
uint256 fee = (flatFeeAmount * _FREE_FEE_PERCENTAGE) / 100_00;
if (mintReferral != address(0))
mintReferralReward =
(flatFeeAmount * _FREE_MINT_REFERRAL_REWARD_PERCENTAGE) /
100_00;
else
fee +=
(flatFeeAmount * _FREE_MINT_REFERRAL_REWARD_PERCENTAGE) /
100_00;
return (creatorReward, fee, mintReferralReward, firstMinterReward);
}
function _getPaidMintRewards(
address mintReferral,
uint256 flatFeeAmount
) internal pure returns (uint256, uint256, uint256, uint256) {
uint256 mintReferralReward = 0;
uint256 fee = (flatFeeAmount * _PAID_FEE_PERCENTAGE) / 100_00;
uint256 firstMinterReward = (flatFeeAmount *
_PAID_FIRST_MINTER_REWARD_PERCENTAGE) / 100_00;
if (mintReferral != address(0))
mintReferralReward =
(flatFeeAmount * _PAID_MINT_REFERRAL_REWARD_PERCENTAGE) /
100_00;
else
fee +=
(flatFeeAmount * _PAID_MINT_REFERRAL_REWARD_PERCENTAGE) /
100_00;
return (0, fee, mintReferralReward, firstMinterReward);
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface ITreasuryConfigurationEvents {
event TreasurySet(address indexed treasury, address indexed newTreasury);
event TributaryRegistrySet(
address indexed tributaryRegistry,
address indexed newTributaryRegistry
);
event DistributionSet(
address indexed distribution,
address indexed newDistribution
);
event FeeConfigurationSet(
address indexed feeConfiguration,
address indexed newFeeConfiguration
);
}
interface ITreasuryConfiguration {
function treasury() external returns (address payable);
function tributaryRegistry() external returns (address);
function distribution() external returns (address);
function feeConfiguration() external returns (address);
function setTreasury(address payable newTreasury) external;
function setTributaryRegistry(address newTributaryRegistry) external;
function setDistribution(address newDistribution) external;
function setFeeConfiguration(address newFeeConfiguration) external;
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface ITreasuryEvents {
event Transfer(address indexed from, address indexed to, uint256 value);
event ERC20Transfer(
address indexed token,
address indexed from,
address indexed to,
uint256 amount
);
event ERC721Transfer(
address indexed token,
address indexed from,
address indexed to,
uint256 tokenId
);
}
interface ITreasury {
struct Call {
// The target of the transaction.
address target;
// The value passed into the transaction.
uint96 value;
// Any data passed with the call.
bytes data;
}
function treasuryConfiguration() external view returns (address);
function transferFunds(address payable to, uint256 value) external;
function transferERC20(
address token,
address to,
uint256 value
) external;
function transferERC721(
address token,
address from,
address to,
uint256 tokenId
) external;
function contributeWithTributary(address tributary) external payable;
function contribute(uint256 amount) external payable;
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface ITributaryRegistry {
function allowedRegistrar(address account) external view returns (bool);
function producerToTributary(address producer)
external
view
returns (address tributary);
function singletonProducer(address producer) external view returns (bool);
function addRegistrar(address registrar) external;
function removeRegistrar(address registrar) external;
function addSingletonProducer(address producer) external;
function removeSingletonProducer(address producer) external;
function setTributary(address producer, address newTributary) external;
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface IOwnableEvents {
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
}
interface IOwnable {
function transferOwnership(address nextOwner_) external;
function cancelOwnershipTransfer() external;
function acceptOwnership() external;
function renounceOwnership() external;
function isOwner() external view returns (bool);
function isNextOwner() external view returns (bool);
}
contract Ownable is IOwnable, IOwnableEvents {
address public owner;
address private nextOwner;
/// > [[[[[[[[[[[ Modifiers ]]]]]]]]]]]
modifier onlyOwner() {
require(isOwner(), "caller is not the owner.");
_;
}
modifier onlyNextOwner() {
require(isNextOwner(), "current owner must set caller as next owner.");
_;
}
/// @notice Initialize contract by setting the initial owner.
constructor(address owner_) {
_setInitialOwner(owner_);
}
/// @notice Initiate ownership transfer by setting nextOwner.
function transferOwnership(address nextOwner_) external override onlyOwner {
require(nextOwner_ != address(0), "Next owner is the zero address.");
nextOwner = nextOwner_;
}
/// @notice Cancel ownership transfer by deleting nextOwner.
function cancelOwnershipTransfer() external override onlyOwner {
delete nextOwner;
}
/// @notice Accepts ownership transfer by setting owner.
function acceptOwnership() external override onlyNextOwner {
delete nextOwner;
owner = msg.sender;
emit OwnershipTransferred(owner, msg.sender);
}
/// @notice Renounce ownership by setting owner to zero address.
function renounceOwnership() external override onlyOwner {
_renounceOwnership();
}
/// @notice Returns true if the caller is the current owner.
function isOwner() public view override returns (bool) {
return msg.sender == owner;
}
/// @notice Returns true if the caller is the next owner.
function isNextOwner() public view override returns (bool) {
return msg.sender == nextOwner;
}
/// > [[[[[[[[[[[ Internal Functions ]]]]]]]]]]]
function _setOwner(address previousOwner, address newOwner) internal {
owner = newOwner;
emit OwnershipTransferred(previousOwner, owner);
}
function _setInitialOwner(address newOwner) internal {
owner = newOwner;
emit OwnershipTransferred(address(0), newOwner);
}
function _renounceOwnership() internal {
emit OwnershipTransferred(owner, address(0));
owner = address(0);
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
import "./interface/IERC721.sol";
import "../ERC165/ERC165.sol";
/**
* Based on: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/ERC721.sol
*/
contract ERC721 is ERC165, IERC721, IERC721Events {
mapping(uint256 => address) internal _owners;
mapping(address => uint256) internal _balances;
mapping(uint256 => address) private _tokenApprovals;
mapping(address => mapping(address => bool)) private _operatorApprovals;
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override
returns (bool)
{
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
function balanceOf(address owner)
external
view
virtual
override
returns (uint256)
{
require(
owner != address(0),
"ERC721: balance query for the zero address"
);
return _balances[owner];
}
function ownerOf(uint256 tokenId) external view virtual returns (address) {
return _ownerOf(tokenId);
}
function _ownerOf(uint256 tokenId) internal view returns (address) {
address owner = _owners[tokenId];
require(
owner != address(0),
"ERC721: owner query for nonexistent token"
);
return owner;
}
function approve(address to, uint256 tokenId) external virtual override {
address owner = _ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
msg.sender == owner || isApprovedForAll(owner, msg.sender),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
function getApproved(uint256 tokenId)
public
view
virtual
override
returns (address)
{
require(
_exists(tokenId),
"ERC721: approved query for nonexistent token"
);
return _tokenApprovals[tokenId];
}
function setApprovalForAll(address operator, bool approved)
external
virtual
override
{
require(operator != msg.sender, "ERC721: approve to caller");
_operatorApprovals[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function isApprovedForAll(address owner, address operator)
public
view
virtual
override
returns (bool)
{
return _operatorApprovals[owner][operator];
}
function transferFrom(
address from,
address to,
uint256 tokenId
) external virtual override {
//solhint-disable-next-line max-line-length
require(
_isApprovedOrOwner(msg.sender, tokenId),
"ERC721: transfer caller is not owner nor approved"
);
_transfer(from, to, tokenId);
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external virtual override {
_safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) external virtual override {
_safeTransferFrom(from, to, tokenId, _data);
}
function _safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
require(
_isApprovedOrOwner(msg.sender, tokenId),
"ERC721: transfer caller is not owner nor approved"
);
_safeTransfer(from, to, tokenId, _data);
}
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"
);
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId)
internal
view
virtual
returns (bool)
{
require(
_exists(tokenId),
"ERC721: operator query for nonexistent token"
);
address owner = _ownerOf(tokenId);
return (spender == owner ||
getApproved(tokenId) == spender ||
isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
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"
);
}
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);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = _ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(
_ownerOf(tokenId) == from,
"ERC721: transfer of token that is not own"
);
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(_ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.code.length > 0) {
// slither-disable-next-line unused-return
try
IERC721Receiver(to).onERC721Received(
msg.sender,
from,
tokenId,
_data
)
returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert(
"ERC721: transfer to non ERC721Receiver implementer"
);
} else {
// solhint-disable-next-line no-inline-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
abstract contract ERC165 is IERC165 {
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override
returns (bool)
{
return interfaceId == type(IERC165).interfaceId;
}
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface IERC721 {
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId)
external
view
returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator)
external
view
returns (bool);
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
interface IERC721Events {
event Transfer(
address indexed from,
address indexed to,
uint256 indexed tokenId
);
event Approval(
address indexed owner,
address indexed approved,
uint256 indexed tokenId
);
event ApprovalForAll(
address indexed owner,
address indexed operator,
bool approved
);
}
interface IERC721Metadata {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
interface IERC721Burnable is IERC721 {
function burn(uint256 tokenId) external;
}
interface IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
interface IERC721Royalties {
function getFeeRecipients(uint256 id)
external
view
returns (address payable[] memory);
function getFeeBps(uint256 id) external view returns (uint256[] memory);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
/**
* @title IERC2981
* @notice Interface for the NFT Royalty Standard
*/
interface IERC2981 {
// / bytes4(keccak256("royaltyInfo(uint256,uint256)")) == 0x2a55205a
/**
* @notice Called with the sale price to determine how much royalty
* is owed and to whom.
* @param _tokenId - the NFT asset queried for royalty information
* @param _salePrice - the sale price of the NFT asset specified by _tokenId
* @return receiver - address of who should be sent the royalty payment
* @return royaltyAmount - the royalty payment amount for _salePrice
*/
function royaltyInfo(uint256 _tokenId, uint256 _salePrice)
external
view
returns (address receiver, uint256 royaltyAmount);
}// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
/**
* @title TransactionReentrancyGuard
* @notice Transaction level reentrancy guard, used to prevent calling a
* function multiple times in the same transaction, e.g. minting a token
* using a multicall contract. The guard accesses a storage variable twice
* and compares the gas used, taking advantage of EIP-2929 cold/warm storage
* read costs.
*
* From EIP-2929: Gas cost increases for state access opcodes:
* "For SLOAD, if the (address, storage_key) pair (where address
* is the address of the contract whose storage is being read) is not yet
* in accessed_storage_keys, charge COLD_SLOAD_COST gas and add the pair
* to accessed_storage_keys. If the pair is already in accessed_storage_keys,
* charge WARM_STORAGE_READ_COST gas."
*
* Implementation was forked from bertani.eth, after a thread involving these
* anon solidity giga-brains: [at]rage_pit, [at]transmissions11, 0age.eth.
*/
contract TransactionReentrancyGuard {
bool public guardOn;
uint256 internal GUARD = 1;
/// > [[[[[[[[[[[ Modifiers ]]]]]]]]]]]
modifier guard() {
// If guard is on, run guard.
if (guardOn) {
_guard();
}
_;
}
constructor(bool _guardOn) {
_setGuard(_guardOn);
}
function _guard() internal view {
// Store current gas left.
uint256 t0 = gasleft();
// Load GUARD from storage.
uint256 g = GUARD;
// Store current gas left.
uint256 t1 = gasleft();
// Load GUARD from storage.
uint256 m = GUARD;
// Assert the cost of acessing `g` is greater than the
// cost of accessing `m`, which implies the first SLOAD
// was charged COLD_SLOAD_COST and the second SLOAD was
// charged WARM_STORAGE_READ_COST. Hence this is the first
// time the function has been called.
require(t1 - gasleft() < t0 - t1);
}
function _toggleGuard() internal {
_setGuard(!guardOn);
}
function _setGuard(bool _guardOn) internal {
guardOn = _guardOn;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == _ENTERED;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides a set of functions to operate with Base64 strings.
*
* _Available since v4.5._
*/
library Base64 {
/**
* @dev Base64 Encoding/Decoding Table
*/
string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/**
* @dev Converts a `bytes` to its Bytes64 `string` representation.
*/
function encode(bytes memory data) internal pure returns (string memory) {
/**
* Inspired by Brecht Devos (Brechtpd) implementation - MIT licence
* https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol
*/
if (data.length == 0) return "";
// Loads the table into memory
string memory table = _TABLE;
// Encoding takes 3 bytes chunks of binary data from `bytes` data parameter
// and split into 4 numbers of 6 bits.
// The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up
// - `data.length + 2` -> Round up
// - `/ 3` -> Number of 3-bytes chunks
// - `4 *` -> 4 characters for each chunk
string memory result = new string(4 * ((data.length + 2) / 3));
/// @solidity memory-safe-assembly
assembly {
// Prepare the lookup table (skip the first "length" byte)
let tablePtr := add(table, 1)
// Prepare result pointer, jump over length
let resultPtr := add(result, 32)
// Run over the input, 3 bytes at a time
for {
let dataPtr := data
let endPtr := add(data, mload(data))
} lt(dataPtr, endPtr) {
} {
// Advance 3 bytes
dataPtr := add(dataPtr, 3)
let input := mload(dataPtr)
// To write each character, shift the 3 bytes (18 bits) chunk
// 4 times in blocks of 6 bits for each character (18, 12, 6, 0)
// and apply logical AND with 0x3F which is the number of
// the previous character in the ASCII table prior to the Base64 Table
// The result is then added to the table to get the character to write,
// and finally write it in the result pointer but with a left shift
// of 256 (1 byte) - 8 (1 ASCII char) = 248 bits
mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
}
// When data `bytes` is not exactly 3 bytes long
// it is padded with `=` characters at the end
switch mod(mload(data), 3)
case 1 {
mstore8(sub(resultPtr, 1), 0x3d)
mstore8(sub(resultPtr, 2), 0x3d)
}
case 2 {
mstore8(sub(resultPtr, 1), 0x3d)
}
}
return result;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
import "./math/Math.sol";
import "./math/SignedMath.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 `int256` to its ASCII `string` decimal representation.
*/
function toString(int256 value) internal pure returns (string memory) {
return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, Math.log256(value) + 1);
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
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);
}
/**
* @dev Returns true if the two strings are equal.
*/
function equal(string memory a, string memory b) internal pure returns (bool) {
return keccak256(bytes(a)) == keccak256(bytes(b));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/EIP712.sol)
pragma solidity ^0.8.8;
import "./ECDSA.sol";
import "../ShortStrings.sol";
import "../../interfaces/IERC5267.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].
*
* NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
* separator of the implementation contract. This will cause the `_domainSeparatorV4` function to always rebuild the
* separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
*
* _Available since v3.4._
*
* @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
*/
abstract contract EIP712 is IERC5267 {
using ShortStrings for *;
bytes32 private constant _TYPE_HASH =
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
// 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 _cachedDomainSeparator;
uint256 private immutable _cachedChainId;
address private immutable _cachedThis;
bytes32 private immutable _hashedName;
bytes32 private immutable _hashedVersion;
ShortString private immutable _name;
ShortString private immutable _version;
string private _nameFallback;
string private _versionFallback;
/**
* @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) {
_name = name.toShortStringWithFallback(_nameFallback);
_version = version.toShortStringWithFallback(_versionFallback);
_hashedName = keccak256(bytes(name));
_hashedVersion = keccak256(bytes(version));
_cachedChainId = block.chainid;
_cachedDomainSeparator = _buildDomainSeparator();
_cachedThis = address(this);
}
/**
* @dev Returns the domain separator for the current chain.
*/
function _domainSeparatorV4() internal view returns (bytes32) {
if (address(this) == _cachedThis && block.chainid == _cachedChainId) {
return _cachedDomainSeparator;
} else {
return _buildDomainSeparator();
}
}
function _buildDomainSeparator() private view returns (bytes32) {
return keccak256(abi.encode(_TYPE_HASH, _hashedName, _hashedVersion, 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);
}
/**
* @dev See {EIP-5267}.
*
* _Available since v4.9._
*/
function eip712Domain()
public
view
virtual
override
returns (
bytes1 fields,
string memory name,
string memory version,
uint256 chainId,
address verifyingContract,
bytes32 salt,
uint256[] memory extensions
)
{
return (
hex"0f", // 01111
_name.toStringWithFallback(_nameFallback),
_version.toStringWithFallback(_versionFallback),
block.chainid,
address(this),
bytes32(0),
new uint256[](0)
);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 message) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
/// @solidity memory-safe-assembly
assembly {
mstore(0x00, "\x19Ethereum Signed Message:\n32")
mstore(0x1c, hash)
message := keccak256(0x00, 0x3c)
}
}
/**
* @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 data) {
/// @solidity memory-safe-assembly
assembly {
let ptr := mload(0x40)
mstore(ptr, "\x19\x01")
mstore(add(ptr, 0x02), domainSeparator)
mstore(add(ptr, 0x22), structHash)
data := keccak256(ptr, 0x42)
}
}
/**
* @dev Returns an Ethereum Signed Data with intended validator, created from a
* `validator` and `data` according to the version 0 of EIP-191.
*
* See {recover}.
*/
function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x00", validator, data));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC1271 standard signature validation method for
* contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
*
* _Available since v4.1._
*/
interface IERC1271 {
/**
* @dev Should return whether the signature provided is valid for the provided data
* @param hash Hash of the data to be signed
* @param signature Signature byte array associated with _data
*/
function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/// @notice Library for converting numbers into strings and other string operations.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/LibString.sol)
/// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/LibString.sol)
library LibString {
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* CUSTOM ERRORS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev The `length` of the output is too small to contain all the hex digits.
error HexLengthInsufficient();
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* CONSTANTS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev The constant returned when the `search` is not found in the string.
uint256 internal constant NOT_FOUND = type(uint256).max;
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* DECIMAL OPERATIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Returns the base 10 decimal representation of `value`.
function toString(uint256 value) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
// The maximum value of a uint256 contains 78 digits (1 byte per digit), but
// we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.
// We will need 1 word for the trailing zeros padding, 1 word for the length,
// and 3 words for a maximum of 78 digits.
str := add(mload(0x40), 0x80)
// Update the free memory pointer to allocate.
mstore(0x40, add(str, 0x20))
// Zeroize the slot after the string.
mstore(str, 0)
// Cache the end of the memory to calculate the length later.
let end := str
let w := not(0) // Tsk.
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for { let temp := value } 1 {} {
str := add(str, w) // `sub(str, 1)`.
// Write the character to the pointer.
// The ASCII index of the '0' character is 48.
mstore8(str, add(48, mod(temp, 10)))
// Keep dividing `temp` until zero.
temp := div(temp, 10)
if iszero(temp) { break }
}
let length := sub(end, str)
// Move the pointer 32 bytes leftwards to make room for the length.
str := sub(str, 0x20)
// Store the length.
mstore(str, length)
}
}
/// @dev Returns the base 10 decimal representation of `value`.
function toString(int256 value) internal pure returns (string memory str) {
if (value >= 0) {
return toString(uint256(value));
}
unchecked {
str = toString(uint256(-value));
}
/// @solidity memory-safe-assembly
assembly {
// We still have some spare memory space on the left,
// as we have allocated 3 words (96 bytes) for up to 78 digits.
let length := mload(str) // Load the string length.
mstore(str, 0x2d) // Store the '-' character.
str := sub(str, 1) // Move back the string pointer by a byte.
mstore(str, add(length, 1)) // Update the string length.
}
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* HEXADECIMAL OPERATIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Returns the hexadecimal representation of `value`,
/// left-padded to an input length of `length` bytes.
/// The output is prefixed with "0x" encoded using 2 hexadecimal digits per byte,
/// giving a total length of `length * 2 + 2` bytes.
/// Reverts if `length` is too small for the output to contain all the digits.
function toHexString(uint256 value, uint256 length) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value, length);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hexadecimal representation of `value`,
/// left-padded to an input length of `length` bytes.
/// The output is prefixed with "0x" encoded using 2 hexadecimal digits per byte,
/// giving a total length of `length * 2` bytes.
/// Reverts if `length` is too small for the output to contain all the digits.
function toHexStringNoPrefix(uint256 value, uint256 length)
internal
pure
returns (string memory str)
{
/// @solidity memory-safe-assembly
assembly {
// We need 0x20 bytes for the trailing zeros padding, `length * 2` bytes
// for the digits, 0x02 bytes for the prefix, and 0x20 bytes for the length.
// We add 0x20 to the total and round down to a multiple of 0x20.
// (0x20 + 0x20 + 0x02 + 0x20) = 0x62.
str := add(mload(0x40), and(add(shl(1, length), 0x42), not(0x1f)))
// Allocate the memory.
mstore(0x40, add(str, 0x20))
// Zeroize the slot after the string.
mstore(str, 0)
// Cache the end to calculate the length later.
let end := str
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
let start := sub(str, add(length, length))
let w := not(1) // Tsk.
let temp := value
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for {} 1 {} {
str := add(str, w) // `sub(str, 2)`.
mstore8(add(str, 1), mload(and(temp, 15)))
mstore8(str, mload(and(shr(4, temp), 15)))
temp := shr(8, temp)
if iszero(xor(str, start)) { break }
}
if temp {
// Store the function selector of `HexLengthInsufficient()`.
mstore(0x00, 0x2194895a)
// Revert with (offset, size).
revert(0x1c, 0x04)
}
// Compute the string's length.
let strLength := sub(end, str)
// Move the pointer and write the length.
str := sub(str, 0x20)
mstore(str, strLength)
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte.
/// As address are 20 bytes long, the output will left-padded to have
/// a length of `20 * 2 + 2` bytes.
function toHexString(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x".
/// The output excludes leading "0" from the `toHexString` output.
/// `0x00: "0x0", 0x01: "0x1", 0x12: "0x12", 0x123: "0x123"`.
function toMinimalHexString(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let o := eq(byte(0, mload(add(str, 0x20))), 0x30) // Whether leading zero is present.
let strLength := add(mload(str), 2) // Compute the length.
mstore(add(str, o), 0x3078) // Write the "0x" prefix, accounting for leading zero.
str := sub(add(str, o), 2) // Move the pointer, accounting for leading zero.
mstore(str, sub(strLength, o)) // Write the length, accounting for leading zero.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output excludes leading "0" from the `toHexStringNoPrefix` output.
/// `0x00: "0", 0x01: "1", 0x12: "12", 0x123: "123"`.
function toMinimalHexStringNoPrefix(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let o := eq(byte(0, mload(add(str, 0x20))), 0x30) // Whether leading zero is present.
let strLength := mload(str) // Get the length.
str := add(str, o) // Move the pointer, accounting for leading zero.
mstore(str, sub(strLength, o)) // Write the length, accounting for leading zero.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is encoded using 2 hexadecimal digits per byte.
/// As address are 20 bytes long, the output will left-padded to have
/// a length of `20 * 2` bytes.
function toHexStringNoPrefix(uint256 value) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
// We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length,
// 0x02 bytes for the prefix, and 0x40 bytes for the digits.
// The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x40) is 0xa0.
str := add(mload(0x40), 0x80)
// Allocate the memory.
mstore(0x40, add(str, 0x20))
// Zeroize the slot after the string.
mstore(str, 0)
// Cache the end to calculate the length later.
let end := str
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
let w := not(1) // Tsk.
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for { let temp := value } 1 {} {
str := add(str, w) // `sub(str, 2)`.
mstore8(add(str, 1), mload(and(temp, 15)))
mstore8(str, mload(and(shr(4, temp), 15)))
temp := shr(8, temp)
if iszero(temp) { break }
}
// Compute the string's length.
let strLength := sub(end, str)
// Move the pointer and write the length.
str := sub(str, 0x20)
mstore(str, strLength)
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x", encoded using 2 hexadecimal digits per byte,
/// and the alphabets are capitalized conditionally according to
/// https://eips.ethereum.org/EIPS/eip-55
function toHexStringChecksummed(address value) internal pure returns (string memory str) {
str = toHexString(value);
/// @solidity memory-safe-assembly
assembly {
let mask := shl(6, div(not(0), 255)) // `0b010000000100000000 ...`
let o := add(str, 0x22)
let hashed := and(keccak256(o, 40), mul(34, mask)) // `0b10001000 ... `
let t := shl(240, 136) // `0b10001000 << 240`
for { let i := 0 } 1 {} {
mstore(add(i, i), mul(t, byte(i, hashed)))
i := add(i, 1)
if eq(i, 20) { break }
}
mstore(o, xor(mload(o), shr(1, and(mload(0x00), and(mload(o), mask)))))
o := add(o, 0x20)
mstore(o, xor(mload(o), shr(1, and(mload(0x20), and(mload(o), mask)))))
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is prefixed with "0x" and encoded using 2 hexadecimal digits per byte.
function toHexString(address value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hexadecimal representation of `value`.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexStringNoPrefix(address value) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
str := mload(0x40)
// Allocate the memory.
// We need 0x20 bytes for the trailing zeros padding, 0x20 bytes for the length,
// 0x02 bytes for the prefix, and 0x28 bytes for the digits.
// The next multiple of 0x20 above (0x20 + 0x20 + 0x02 + 0x28) is 0x80.
mstore(0x40, add(str, 0x80))
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
str := add(str, 2)
mstore(str, 40)
let o := add(str, 0x20)
mstore(add(o, 40), 0)
value := shl(96, value)
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
for { let i := 0 } 1 {} {
let p := add(o, add(i, i))
let temp := byte(i, value)
mstore8(add(p, 1), mload(and(temp, 15)))
mstore8(p, mload(shr(4, temp)))
i := add(i, 1)
if eq(i, 20) { break }
}
}
}
/// @dev Returns the hex encoded string from the raw bytes.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexString(bytes memory raw) internal pure returns (string memory str) {
str = toHexStringNoPrefix(raw);
/// @solidity memory-safe-assembly
assembly {
let strLength := add(mload(str), 2) // Compute the length.
mstore(str, 0x3078) // Write the "0x" prefix.
str := sub(str, 2) // Move the pointer.
mstore(str, strLength) // Write the length.
}
}
/// @dev Returns the hex encoded string from the raw bytes.
/// The output is encoded using 2 hexadecimal digits per byte.
function toHexStringNoPrefix(bytes memory raw) internal pure returns (string memory str) {
/// @solidity memory-safe-assembly
assembly {
let length := mload(raw)
str := add(mload(0x40), 2) // Skip 2 bytes for the optional prefix.
mstore(str, add(length, length)) // Store the length of the output.
// Store "0123456789abcdef" in scratch space.
mstore(0x0f, 0x30313233343536373839616263646566)
let o := add(str, 0x20)
let end := add(raw, length)
for {} iszero(eq(raw, end)) {} {
raw := add(raw, 1)
mstore8(add(o, 1), mload(and(mload(raw), 15)))
mstore8(o, mload(and(shr(4, mload(raw)), 15)))
o := add(o, 2)
}
mstore(o, 0) // Zeroize the slot after the string.
mstore(0x40, add(o, 0x20)) // Allocate the memory.
}
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* RUNE STRING OPERATIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Returns the number of UTF characters in the string.
function runeCount(string memory s) internal pure returns (uint256 result) {
/// @solidity memory-safe-assembly
assembly {
if mload(s) {
mstore(0x00, div(not(0), 255))
mstore(0x20, 0x0202020202020202020202020202020202020202020202020303030304040506)
let o := add(s, 0x20)
let end := add(o, mload(s))
for { result := 1 } 1 { result := add(result, 1) } {
o := add(o, byte(0, mload(shr(250, mload(o)))))
if iszero(lt(o, end)) { break }
}
}
}
}
/// @dev Returns if this string is a 7-bit ASCII string.
/// (i.e. all characters codes are in [0..127])
function is7BitASCII(string memory s) internal pure returns (bool result) {
/// @solidity memory-safe-assembly
assembly {
let mask := shl(7, div(not(0), 255))
result := 1
let n := mload(s)
if n {
let o := add(s, 0x20)
let end := add(o, n)
let last := mload(end)
mstore(end, 0)
for {} 1 {} {
if and(mask, mload(o)) {
result := 0
break
}
o := add(o, 0x20)
if iszero(lt(o, end)) { break }
}
mstore(end, last)
}
}
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* BYTE STRING OPERATIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
// For performance and bytecode compactness, all indices of the following operations
// are byte (ASCII) offsets, not UTF character offsets.
/// @dev Returns `subject` all occurrences of `search` replaced with `replacement`.
function replace(string memory subject, string memory search, string memory replacement)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let subjectLength := mload(subject)
let searchLength := mload(search)
let replacementLength := mload(replacement)
subject := add(subject, 0x20)
search := add(search, 0x20)
replacement := add(replacement, 0x20)
result := add(mload(0x40), 0x20)
let subjectEnd := add(subject, subjectLength)
if iszero(gt(searchLength, subjectLength)) {
let subjectSearchEnd := add(sub(subjectEnd, searchLength), 1)
let h := 0
if iszero(lt(searchLength, 0x20)) { h := keccak256(search, searchLength) }
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(search)
for {} 1 {} {
let t := mload(subject)
// Whether the first `searchLength % 32` bytes of
// `subject` and `search` matches.
if iszero(shr(m, xor(t, s))) {
if h {
if iszero(eq(keccak256(subject, searchLength), h)) {
mstore(result, t)
result := add(result, 1)
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
// Copy the `replacement` one word at a time.
for { let o := 0 } 1 {} {
mstore(add(result, o), mload(add(replacement, o)))
o := add(o, 0x20)
if iszero(lt(o, replacementLength)) { break }
}
result := add(result, replacementLength)
subject := add(subject, searchLength)
if searchLength {
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
mstore(result, t)
result := add(result, 1)
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
}
}
let resultRemainder := result
result := add(mload(0x40), 0x20)
let k := add(sub(resultRemainder, result), sub(subjectEnd, subject))
// Copy the rest of the string one word at a time.
for {} lt(subject, subjectEnd) {} {
mstore(resultRemainder, mload(subject))
resultRemainder := add(resultRemainder, 0x20)
subject := add(subject, 0x20)
}
result := sub(result, 0x20)
let last := add(add(result, 0x20), k) // Zeroize the slot after the string.
mstore(last, 0)
mstore(0x40, add(last, 0x20)) // Allocate the memory.
mstore(result, k) // Store the length.
}
}
/// @dev Returns the byte index of the first location of `search` in `subject`,
/// searching from left to right, starting from `from`.
/// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `search` is not found.
function indexOf(string memory subject, string memory search, uint256 from)
internal
pure
returns (uint256 result)
{
/// @solidity memory-safe-assembly
assembly {
for { let subjectLength := mload(subject) } 1 {} {
if iszero(mload(search)) {
if iszero(gt(from, subjectLength)) {
result := from
break
}
result := subjectLength
break
}
let searchLength := mload(search)
let subjectStart := add(subject, 0x20)
result := not(0) // Initialize to `NOT_FOUND`.
subject := add(subjectStart, from)
let end := add(sub(add(subjectStart, subjectLength), searchLength), 1)
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(add(search, 0x20))
if iszero(and(lt(subject, end), lt(from, subjectLength))) { break }
if iszero(lt(searchLength, 0x20)) {
for { let h := keccak256(add(search, 0x20), searchLength) } 1 {} {
if iszero(shr(m, xor(mload(subject), s))) {
if eq(keccak256(subject, searchLength), h) {
result := sub(subject, subjectStart)
break
}
}
subject := add(subject, 1)
if iszero(lt(subject, end)) { break }
}
break
}
for {} 1 {} {
if iszero(shr(m, xor(mload(subject), s))) {
result := sub(subject, subjectStart)
break
}
subject := add(subject, 1)
if iszero(lt(subject, end)) { break }
}
break
}
}
}
/// @dev Returns the byte index of the first location of `search` in `subject`,
/// searching from left to right.
/// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `search` is not found.
function indexOf(string memory subject, string memory search)
internal
pure
returns (uint256 result)
{
result = indexOf(subject, search, 0);
}
/// @dev Returns the byte index of the first location of `search` in `subject`,
/// searching from right to left, starting from `from`.
/// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `search` is not found.
function lastIndexOf(string memory subject, string memory search, uint256 from)
internal
pure
returns (uint256 result)
{
/// @solidity memory-safe-assembly
assembly {
for {} 1 {} {
result := not(0) // Initialize to `NOT_FOUND`.
let searchLength := mload(search)
if gt(searchLength, mload(subject)) { break }
let w := result
let fromMax := sub(mload(subject), searchLength)
if iszero(gt(fromMax, from)) { from := fromMax }
let end := add(add(subject, 0x20), w)
subject := add(add(subject, 0x20), from)
if iszero(gt(subject, end)) { break }
// As this function is not too often used,
// we shall simply use keccak256 for smaller bytecode size.
for { let h := keccak256(add(search, 0x20), searchLength) } 1 {} {
if eq(keccak256(subject, searchLength), h) {
result := sub(subject, add(end, 1))
break
}
subject := add(subject, w) // `sub(subject, 1)`.
if iszero(gt(subject, end)) { break }
}
break
}
}
}
/// @dev Returns the byte index of the first location of `search` in `subject`,
/// searching from right to left.
/// Returns `NOT_FOUND` (i.e. `type(uint256).max`) if the `search` is not found.
function lastIndexOf(string memory subject, string memory search)
internal
pure
returns (uint256 result)
{
result = lastIndexOf(subject, search, uint256(int256(-1)));
}
/// @dev Returns whether `subject` starts with `search`.
function startsWith(string memory subject, string memory search)
internal
pure
returns (bool result)
{
/// @solidity memory-safe-assembly
assembly {
let searchLength := mload(search)
// Just using keccak256 directly is actually cheaper.
// forgefmt: disable-next-item
result := and(
iszero(gt(searchLength, mload(subject))),
eq(
keccak256(add(subject, 0x20), searchLength),
keccak256(add(search, 0x20), searchLength)
)
)
}
}
/// @dev Returns whether `subject` ends with `search`.
function endsWith(string memory subject, string memory search)
internal
pure
returns (bool result)
{
/// @solidity memory-safe-assembly
assembly {
let searchLength := mload(search)
let subjectLength := mload(subject)
// Whether `search` is not longer than `subject`.
let withinRange := iszero(gt(searchLength, subjectLength))
// Just using keccak256 directly is actually cheaper.
// forgefmt: disable-next-item
result := and(
withinRange,
eq(
keccak256(
// `subject + 0x20 + max(subjectLength - searchLength, 0)`.
add(add(subject, 0x20), mul(withinRange, sub(subjectLength, searchLength))),
searchLength
),
keccak256(add(search, 0x20), searchLength)
)
)
}
}
/// @dev Returns `subject` repeated `times`.
function repeat(string memory subject, uint256 times)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let subjectLength := mload(subject)
if iszero(or(iszero(times), iszero(subjectLength))) {
subject := add(subject, 0x20)
result := mload(0x40)
let output := add(result, 0x20)
for {} 1 {} {
// Copy the `subject` one word at a time.
for { let o := 0 } 1 {} {
mstore(add(output, o), mload(add(subject, o)))
o := add(o, 0x20)
if iszero(lt(o, subjectLength)) { break }
}
output := add(output, subjectLength)
times := sub(times, 1)
if iszero(times) { break }
}
mstore(output, 0) // Zeroize the slot after the string.
let resultLength := sub(output, add(result, 0x20))
mstore(result, resultLength) // Store the length.
// Allocate the memory.
mstore(0x40, add(result, add(resultLength, 0x20)))
}
}
}
/// @dev Returns a copy of `subject` sliced from `start` to `end` (exclusive).
/// `start` and `end` are byte offsets.
function slice(string memory subject, uint256 start, uint256 end)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let subjectLength := mload(subject)
if iszero(gt(subjectLength, end)) { end := subjectLength }
if iszero(gt(subjectLength, start)) { start := subjectLength }
if lt(start, end) {
result := mload(0x40)
let resultLength := sub(end, start)
mstore(result, resultLength)
subject := add(subject, start)
let w := not(0x1f)
// Copy the `subject` one word at a time, backwards.
for { let o := and(add(resultLength, 0x1f), w) } 1 {} {
mstore(add(result, o), mload(add(subject, o)))
o := add(o, w) // `sub(o, 0x20)`.
if iszero(o) { break }
}
// Zeroize the slot after the string.
mstore(add(add(result, 0x20), resultLength), 0)
// Allocate memory for the length and the bytes,
// rounded up to a multiple of 32.
mstore(0x40, add(result, and(add(resultLength, 0x3f), w)))
}
}
}
/// @dev Returns a copy of `subject` sliced from `start` to the end of the string.
/// `start` is a byte offset.
function slice(string memory subject, uint256 start)
internal
pure
returns (string memory result)
{
result = slice(subject, start, uint256(int256(-1)));
}
/// @dev Returns all the indices of `search` in `subject`.
/// The indices are byte offsets.
function indicesOf(string memory subject, string memory search)
internal
pure
returns (uint256[] memory result)
{
/// @solidity memory-safe-assembly
assembly {
let subjectLength := mload(subject)
let searchLength := mload(search)
if iszero(gt(searchLength, subjectLength)) {
subject := add(subject, 0x20)
search := add(search, 0x20)
result := add(mload(0x40), 0x20)
let subjectStart := subject
let subjectSearchEnd := add(sub(add(subject, subjectLength), searchLength), 1)
let h := 0
if iszero(lt(searchLength, 0x20)) { h := keccak256(search, searchLength) }
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(search)
for {} 1 {} {
let t := mload(subject)
// Whether the first `searchLength % 32` bytes of
// `subject` and `search` matches.
if iszero(shr(m, xor(t, s))) {
if h {
if iszero(eq(keccak256(subject, searchLength), h)) {
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
// Append to `result`.
mstore(result, sub(subject, subjectStart))
result := add(result, 0x20)
// Advance `subject` by `searchLength`.
subject := add(subject, searchLength)
if searchLength {
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
}
let resultEnd := result
// Assign `result` to the free memory pointer.
result := mload(0x40)
// Store the length of `result`.
mstore(result, shr(5, sub(resultEnd, add(result, 0x20))))
// Allocate memory for result.
// We allocate one more word, so this array can be recycled for {split}.
mstore(0x40, add(resultEnd, 0x20))
}
}
}
/// @dev Returns a arrays of strings based on the `delimiter` inside of the `subject` string.
function split(string memory subject, string memory delimiter)
internal
pure
returns (string[] memory result)
{
uint256[] memory indices = indicesOf(subject, delimiter);
/// @solidity memory-safe-assembly
assembly {
let w := not(0x1f)
let indexPtr := add(indices, 0x20)
let indicesEnd := add(indexPtr, shl(5, add(mload(indices), 1)))
mstore(add(indicesEnd, w), mload(subject))
mstore(indices, add(mload(indices), 1))
let prevIndex := 0
for {} 1 {} {
let index := mload(indexPtr)
mstore(indexPtr, 0x60)
if iszero(eq(index, prevIndex)) {
let element := mload(0x40)
let elementLength := sub(index, prevIndex)
mstore(element, elementLength)
// Copy the `subject` one word at a time, backwards.
for { let o := and(add(elementLength, 0x1f), w) } 1 {} {
mstore(add(element, o), mload(add(add(subject, prevIndex), o)))
o := add(o, w) // `sub(o, 0x20)`.
if iszero(o) { break }
}
// Zeroize the slot after the string.
mstore(add(add(element, 0x20), elementLength), 0)
// Allocate memory for the length and the bytes,
// rounded up to a multiple of 32.
mstore(0x40, add(element, and(add(elementLength, 0x3f), w)))
// Store the `element` into the array.
mstore(indexPtr, element)
}
prevIndex := add(index, mload(delimiter))
indexPtr := add(indexPtr, 0x20)
if iszero(lt(indexPtr, indicesEnd)) { break }
}
result := indices
if iszero(mload(delimiter)) {
result := add(indices, 0x20)
mstore(result, sub(mload(indices), 2))
}
}
}
/// @dev Returns a concatenated string of `a` and `b`.
/// Cheaper than `string.concat()` and does not de-align the free memory pointer.
function concat(string memory a, string memory b)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let w := not(0x1f)
result := mload(0x40)
let aLength := mload(a)
// Copy `a` one word at a time, backwards.
for { let o := and(add(aLength, 0x20), w) } 1 {} {
mstore(add(result, o), mload(add(a, o)))
o := add(o, w) // `sub(o, 0x20)`.
if iszero(o) { break }
}
let bLength := mload(b)
let output := add(result, aLength)
// Copy `b` one word at a time, backwards.
for { let o := and(add(bLength, 0x20), w) } 1 {} {
mstore(add(output, o), mload(add(b, o)))
o := add(o, w) // `sub(o, 0x20)`.
if iszero(o) { break }
}
let totalLength := add(aLength, bLength)
let last := add(add(result, 0x20), totalLength)
// Zeroize the slot after the string.
mstore(last, 0)
// Stores the length.
mstore(result, totalLength)
// Allocate memory for the length and the bytes,
// rounded up to a multiple of 32.
mstore(0x40, and(add(last, 0x1f), w))
}
}
/// @dev Returns a copy of the string in either lowercase or UPPERCASE.
/// WARNING! This function is only compatible with 7-bit ASCII strings.
function toCase(string memory subject, bool toUpper)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let length := mload(subject)
if length {
result := add(mload(0x40), 0x20)
subject := add(subject, 1)
let flags := shl(add(70, shl(5, toUpper)), 0x3ffffff)
let w := not(0)
for { let o := length } 1 {} {
o := add(o, w)
let b := and(0xff, mload(add(subject, o)))
mstore8(add(result, o), xor(b, and(shr(b, flags), 0x20)))
if iszero(o) { break }
}
result := mload(0x40)
mstore(result, length) // Store the length.
let last := add(add(result, 0x20), length)
mstore(last, 0) // Zeroize the slot after the string.
mstore(0x40, add(last, 0x20)) // Allocate the memory.
}
}
}
/// @dev Returns a string from a small bytes32 string.
/// `smallString` must be null terminated, or behavior will be undefined.
function fromSmallString(bytes32 smallString) internal pure returns (string memory result) {
if (smallString == bytes32(0)) return result;
/// @solidity memory-safe-assembly
assembly {
result := mload(0x40)
let n := 0
for {} 1 {} {
n := add(n, 1)
if iszero(byte(n, smallString)) { break } // Scan for '\0'.
}
mstore(result, n)
let o := add(result, 0x20)
mstore(o, smallString)
mstore(add(o, n), 0)
mstore(0x40, add(result, 0x40))
}
}
/// @dev Returns a lowercased copy of the string.
/// WARNING! This function is only compatible with 7-bit ASCII strings.
function lower(string memory subject) internal pure returns (string memory result) {
result = toCase(subject, false);
}
/// @dev Returns an UPPERCASED copy of the string.
/// WARNING! This function is only compatible with 7-bit ASCII strings.
function upper(string memory subject) internal pure returns (string memory result) {
result = toCase(subject, true);
}
/// @dev Escapes the string to be used within HTML tags.
function escapeHTML(string memory s) internal pure returns (string memory result) {
/// @solidity memory-safe-assembly
assembly {
let end := add(s, mload(s))
result := add(mload(0x40), 0x20)
// Store the bytes of the packed offsets and strides into the scratch space.
// `packed = (stride << 5) | offset`. Max offset is 20. Max stride is 6.
mstore(0x1f, 0x900094)
mstore(0x08, 0xc0000000a6ab)
// Store ""&'<>" into the scratch space.
mstore(0x00, shl(64, 0x2671756f743b26616d703b262333393b266c743b2667743b))
for {} iszero(eq(s, end)) {} {
s := add(s, 1)
let c := and(mload(s), 0xff)
// Not in `["\"","'","&","<",">"]`.
if iszero(and(shl(c, 1), 0x500000c400000000)) {
mstore8(result, c)
result := add(result, 1)
continue
}
let t := shr(248, mload(c))
mstore(result, mload(and(t, 0x1f)))
result := add(result, shr(5, t))
}
let last := result
mstore(last, 0) // Zeroize the slot after the string.
result := mload(0x40)
mstore(result, sub(last, add(result, 0x20))) // Store the length.
mstore(0x40, add(last, 0x20)) // Allocate the memory.
}
}
/// @dev Escapes the string to be used within double-quotes in a JSON.
/// If `addDoubleQuotes` is true, the result will be enclosed in double-quotes.
function escapeJSON(string memory s, bool addDoubleQuotes)
internal
pure
returns (string memory result)
{
/// @solidity memory-safe-assembly
assembly {
let end := add(s, mload(s))
result := add(mload(0x40), 0x20)
if addDoubleQuotes {
mstore8(result, 34)
result := add(1, result)
}
// Store "\\u0000" in scratch space.
// Store "0123456789abcdef" in scratch space.
// Also, store `{0x08:"b", 0x09:"t", 0x0a:"n", 0x0c:"f", 0x0d:"r"}`.
// into the scratch space.
mstore(0x15, 0x5c75303030303031323334353637383961626364656662746e006672)
// Bitmask for detecting `["\"","\\"]`.
let e := or(shl(0x22, 1), shl(0x5c, 1))
for {} iszero(eq(s, end)) {} {
s := add(s, 1)
let c := and(mload(s), 0xff)
if iszero(lt(c, 0x20)) {
if iszero(and(shl(c, 1), e)) {
// Not in `["\"","\\"]`.
mstore8(result, c)
result := add(result, 1)
continue
}
mstore8(result, 0x5c) // "\\".
mstore8(add(result, 1), c)
result := add(result, 2)
continue
}
if iszero(and(shl(c, 1), 0x3700)) {
// Not in `["\b","\t","\n","\f","\d"]`.
mstore8(0x1d, mload(shr(4, c))) // Hex value.
mstore8(0x1e, mload(and(c, 15))) // Hex value.
mstore(result, mload(0x19)) // "\\u00XX".
result := add(result, 6)
continue
}
mstore8(result, 0x5c) // "\\".
mstore8(add(result, 1), mload(add(c, 8)))
result := add(result, 2)
}
if addDoubleQuotes {
mstore8(result, 34)
result := add(1, result)
}
let last := result
mstore(last, 0) // Zeroize the slot after the string.
result := mload(0x40)
mstore(result, sub(last, add(result, 0x20))) // Store the length.
mstore(0x40, add(last, 0x20)) // Allocate the memory.
}
}
/// @dev Escapes the string to be used within double-quotes in a JSON.
function escapeJSON(string memory s) internal pure returns (string memory result) {
result = escapeJSON(s, false);
}
/// @dev Returns whether `a` equals `b`.
function eq(string memory a, string memory b) internal pure returns (bool result) {
/// @solidity memory-safe-assembly
assembly {
result := eq(keccak256(add(a, 0x20), mload(a)), keccak256(add(b, 0x20), mload(b)))
}
}
/// @dev Returns whether `a` equals `b`. For small strings up to 32 bytes.
/// `b` must be null terminated, or behavior will be undefined.
function eqs(string memory a, bytes32 b) internal pure returns (bool result) {
/// @solidity memory-safe-assembly
assembly {
// These should be evaluated on compile time, as far as possible.
let x := and(b, add(not(b), 1))
let r := or(shl(8, iszero(b)), shl(7, iszero(iszero(shr(128, x)))))
r := or(r, shl(6, iszero(iszero(shr(64, shr(r, x))))))
r := or(r, shl(5, lt(0xffffffff, shr(r, x))))
r := or(r, shl(4, lt(0xffff, shr(r, x))))
r := or(r, shl(3, lt(0xff, shr(r, x))))
result := gt(eq(mload(a), sub(32, shr(3, r))), shr(r, xor(b, mload(add(a, 0x20)))))
}
}
/// @dev Packs a single string with its length into a single word.
/// Returns `bytes32(0)` if the length is zero or greater than 31.
function packOne(string memory a) internal pure returns (bytes32 result) {
/// @solidity memory-safe-assembly
assembly {
// We don't need to zero right pad the string,
// since this is our own custom non-standard packing scheme.
result :=
mul(
// Load the length and the bytes.
mload(add(a, 0x1f)),
// `length != 0 && length < 32`. Abuses underflow.
// Assumes that the length is valid and within the block gas limit.
lt(sub(mload(a), 1), 0x1f)
)
}
}
/// @dev Unpacks a string packed using {packOne}.
/// Returns the empty string if `packed` is `bytes32(0)`.
/// If `packed` is not an output of {packOne}, the output behavior is undefined.
function unpackOne(bytes32 packed) internal pure returns (string memory result) {
/// @solidity memory-safe-assembly
assembly {
// Grab the free memory pointer.
result := mload(0x40)
// Allocate 2 words (1 for the length, 1 for the bytes).
mstore(0x40, add(result, 0x40))
// Zeroize the length slot.
mstore(result, 0)
// Store the length and bytes.
mstore(add(result, 0x1f), packed)
// Right pad with zeroes.
mstore(add(add(result, 0x20), mload(result)), 0)
}
}
/// @dev Packs two strings with their lengths into a single word.
/// Returns `bytes32(0)` if combined length is zero or greater than 30.
function packTwo(string memory a, string memory b) internal pure returns (bytes32 result) {
/// @solidity memory-safe-assembly
assembly {
let aLength := mload(a)
// We don't need to zero right pad the strings,
// since this is our own custom non-standard packing scheme.
result :=
mul(
// Load the length and the bytes of `a` and `b`.
or(
shl(shl(3, sub(0x1f, aLength)), mload(add(a, aLength))),
mload(sub(add(b, 0x1e), aLength))
),
// `totalLength != 0 && totalLength < 31`. Abuses underflow.
// Assumes that the lengths are valid and within the block gas limit.
lt(sub(add(aLength, mload(b)), 1), 0x1e)
)
}
}
/// @dev Unpacks strings packed using {packTwo}.
/// Returns the empty strings if `packed` is `bytes32(0)`.
/// If `packed` is not an output of {packTwo}, the output behavior is undefined.
function unpackTwo(bytes32 packed)
internal
pure
returns (string memory resultA, string memory resultB)
{
/// @solidity memory-safe-assembly
assembly {
// Grab the free memory pointer.
resultA := mload(0x40)
resultB := add(resultA, 0x40)
// Allocate 2 words for each string (1 for the length, 1 for the byte). Total 4 words.
mstore(0x40, add(resultB, 0x40))
// Zeroize the length slots.
mstore(resultA, 0)
mstore(resultB, 0)
// Store the lengths and bytes.
mstore(add(resultA, 0x1f), packed)
mstore(add(resultB, 0x1f), mload(add(add(resultA, 0x20), mload(resultA))))
// Right pad with zeroes.
mstore(add(add(resultA, 0x20), mload(resultA)), 0)
mstore(add(add(resultB, 0x20), mload(resultB)), 0)
}
}
/// @dev Directly returns `a` without copying.
function directReturn(string memory a) internal pure {
assembly {
// Assumes that the string does not start from the scratch space.
let retStart := sub(a, 0x20)
let retSize := add(mload(a), 0x40)
// Right pad with zeroes. Just in case the string is produced
// by a method that doesn't zero right pad.
mstore(add(retStart, retSize), 0)
// Store the return offset.
mstore(retStart, 0x20)
// End the transaction, returning the string.
return(retStart, retSize)
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1, "Math: mulDiv overflow");
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// 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 256, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard signed math utilities missing in the Solidity language.
*/
library SignedMath {
/**
* @dev Returns the largest of two signed numbers.
*/
function max(int256 a, int256 b) internal pure returns (int256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two signed numbers.
*/
function min(int256 a, int256 b) internal pure returns (int256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two signed numbers without overflow.
* The result is rounded towards zero.
*/
function average(int256 a, int256 b) internal pure returns (int256) {
// Formula from the book "Hacker's Delight"
int256 x = (a & b) + ((a ^ b) >> 1);
return x + (int256(uint256(x) >> 255) & (a ^ b));
}
/**
* @dev Returns the absolute unsigned value of a signed value.
*/
function abs(int256 n) internal pure returns (uint256) {
unchecked {
// must be unchecked in order to support `n = type(int256).min`
return uint256(n >= 0 ? n : -n);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/ShortStrings.sol)
pragma solidity ^0.8.8;
import "./StorageSlot.sol";
// | string | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |
// | length | 0x BB |
type ShortString is bytes32;
/**
* @dev This library provides functions to convert short memory strings
* into a `ShortString` type that can be used as an immutable variable.
*
* Strings of arbitrary length can be optimized using this library if
* they are short enough (up to 31 bytes) by packing them with their
* length (1 byte) in a single EVM word (32 bytes). Additionally, a
* fallback mechanism can be used for every other case.
*
* Usage example:
*
* ```solidity
* contract Named {
* using ShortStrings for *;
*
* ShortString private immutable _name;
* string private _nameFallback;
*
* constructor(string memory contractName) {
* _name = contractName.toShortStringWithFallback(_nameFallback);
* }
*
* function name() external view returns (string memory) {
* return _name.toStringWithFallback(_nameFallback);
* }
* }
* ```
*/
library ShortStrings {
// Used as an identifier for strings longer than 31 bytes.
bytes32 private constant _FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF;
error StringTooLong(string str);
error InvalidShortString();
/**
* @dev Encode a string of at most 31 chars into a `ShortString`.
*
* This will trigger a `StringTooLong` error is the input string is too long.
*/
function toShortString(string memory str) internal pure returns (ShortString) {
bytes memory bstr = bytes(str);
if (bstr.length > 31) {
revert StringTooLong(str);
}
return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length));
}
/**
* @dev Decode a `ShortString` back to a "normal" string.
*/
function toString(ShortString sstr) internal pure returns (string memory) {
uint256 len = byteLength(sstr);
// using `new string(len)` would work locally but is not memory safe.
string memory str = new string(32);
/// @solidity memory-safe-assembly
assembly {
mstore(str, len)
mstore(add(str, 0x20), sstr)
}
return str;
}
/**
* @dev Return the length of a `ShortString`.
*/
function byteLength(ShortString sstr) internal pure returns (uint256) {
uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF;
if (result > 31) {
revert InvalidShortString();
}
return result;
}
/**
* @dev Encode a string into a `ShortString`, or write it to storage if it is too long.
*/
function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) {
if (bytes(value).length < 32) {
return toShortString(value);
} else {
StorageSlot.getStringSlot(store).value = value;
return ShortString.wrap(_FALLBACK_SENTINEL);
}
}
/**
* @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
*/
function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) {
if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {
return toString(value);
} else {
return store;
}
}
/**
* @dev Return the length of a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
*
* WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of
* actual characters as the UTF-8 encoding of a single character can span over multiple bytes.
*/
function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) {
if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {
return byteLength(value);
} else {
return bytes(store).length;
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC5267.sol)
pragma solidity ^0.8.0;
interface IERC5267 {
/**
* @dev MAY be emitted to signal that the domain could have changed.
*/
event EIP712DomainChanged();
/**
* @dev returns the fields and values that describe the domain separator used by this contract for EIP-712
* signature.
*/
function eip712Domain()
external
view
returns (
bytes1 fields,
string memory name,
string memory version,
uint256 chainId,
address verifyingContract,
bytes32 salt,
uint256[] memory extensions
);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.
pragma solidity ^0.8.0;
/**
* @dev Library for reading and writing primitive types to specific storage slots.
*
* Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
* This library helps with reading and writing to such slots without the need for inline assembly.
*
* The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
*
* Example usage to set ERC1967 implementation slot:
* ```solidity
* contract ERC1967 {
* bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
*
* function _getImplementation() internal view returns (address) {
* return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
* }
*
* function _setImplementation(address newImplementation) internal {
* require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*
* _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._
* _Available since v4.9 for `string`, `bytes`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
struct StringSlot {
string value;
}
struct BytesSlot {
bytes value;
}
/**
* @dev Returns an `AddressSlot` with member `value` located at `slot`.
*/
function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BooleanSlot` with member `value` located at `slot`.
*/
function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
*/
function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Uint256Slot` with member `value` located at `slot`.
*/
function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `StringSlot` with member `value` located at `slot`.
*/
function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `StringSlot` representation of the string storage pointer `store`.
*/
function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := store.slot
}
}
/**
* @dev Returns an `BytesSlot` with member `value` located at `slot`.
*/
function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
*/
function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := store.slot
}
}
}{
"remappings": [
"solmate/=lib/solmate/src/",
"ds-test/=lib/ds-test/src/",
"openzeppelin-contracts/=lib/openzeppelin-contracts/",
"multicall/=lib/multicall/src/",
"forge-std/=lib/forge-std/src/",
"solady/=lib/solady/src/",
"erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
"openzeppelin/=lib/openzeppelin-contracts/contracts/"
],
"optimizer": {
"enabled": true,
"runs": 200
},
"metadata": {
"useLiteralContent": false,
"bytecodeHash": "ipfs",
"appendCBOR": true
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "paris",
"libraries": {
"src/treasury/Rewards.sol": {
"Rewards": "0x77bcbbb7783ea8c43ae1893e35c76daf7ec153e3"
}
}
}Contract ABI
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Multichain Portfolio | 34 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.