ERC-721
Overview
Max Total Supply
495 SSGS#0
Holders
278
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
3 SSGS#0Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
GenesisRepot
Compiler Version
v0.8.4+commit.c7e474f2
Contract Source Code (Solidity Standard Json-Input format)
//SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Strings.sol'; import '../VarietyRepot.sol'; import '../../Randomize.sol'; /// @title Genesis /// @author Simon Fremaux (@dievardump) contract GenesisRepot is VarietyRepot { using Strings for uint256; using Strings for uint16; using Strings for uint8; using Randomize for Randomize.Random; enum ColorTypes { AUTO, BLACK_WHITE, FULL } struct Grid { uint8 cols; uint8 rows; uint16 cellSize; uint16 offset; uint16 shapes; uint16 minContentSize; uint16 maxContentSize; bool shadowed; bool degen; bool dark; bool full; ColorTypes colorType; uint256 tokenId; uint256 baseSeed; string[5] palette; } struct CellData { uint16 x; uint16 y; uint16 cx; uint16 cy; uint16 index; } /// @notice constructor /// @param name_ name of the contract (see ERC721) /// @param symbol_ symbol of the contract (see ERC721) /// @param contractURI_ The contract URI (containing its metadata) - can be empty "" /// @param openseaProxyRegistry_ OpenSea's proxy registry to allow gas-less listings - can be address(0) /// @param sower_ Sower contract /// @param oldContract_ the oldContract for migration constructor( string memory name_, string memory symbol_, string memory contractURI_, address openseaProxyRegistry_, address sower_, address oldContract_ ) VarietyRepot( name_, symbol_, contractURI_, openseaProxyRegistry_, sower_, oldContract_ ) {} /// @dev internal function to get the name. Should be overrode by actual Variety contract /// @param tokenId the token to get the name of /// @return seedlingName the token name function _getName(uint256 tokenId) internal view override returns (string memory seedlingName) { seedlingName = names[tokenId]; if (bytes(seedlingName).length == 0) { seedlingName = string( abi.encodePacked('Genesis.sol #', tokenId.toString()) ); } } /// @dev Rendering function; should be overrode by the actual seedling contract /// @param tokenId the tokenId /// @param seed the seed /// @return the json function _render(uint256 tokenId, bytes32 seed) internal view virtual override returns (string memory) { Randomize.Random memory random = Randomize.Random({ seed: uint256(seed), offsetBit: 0 }); uint256 result = random.next(0, 100); Grid memory grid = Grid({ cols: 8, rows: 8, cellSize: 140, offset: 40, shapes: 0, minContentSize: 0, maxContentSize: 0, colorType: result <= 80 // auto 80%, 10% B&W, 10% FULL Color ? ColorTypes.AUTO : (result <= 90 ? ColorTypes.BLACK_WHITE : ColorTypes.FULL), dark: random.next(0, 100) < 10, // 10% dark mode degen: random.next(0, 100) < 10, // 10% degen (grid offseted) shadowed: random.next(0, 100) < 3, // 3% with shadow full: random.next(0, 100) < 1, // 1% full genesis palette: _getPalette(random), tokenId: tokenId, baseSeed: uint256(seed) }); // shadowed + full black white is not pleasing to the eye with the wrong first color if (grid.shadowed && grid.colorType == ColorTypes.BLACK_WHITE) { grid.palette[0] = '#99B898'; } result = random.next(0, 16); if (result < 1) { grid.cols = 3; grid.rows = 3; grid.cellSize = 146; grid.offset = 381; } else if (result < 3) { grid.cols = 4; grid.rows = 4; grid.offset = 320; } else if (result < 7) { grid.cols = 6; grid.rows = 6; grid.offset = 180; } else if (result < 11) { grid.cols = 7; grid.rows = 7; grid.cellSize = 146; grid.offset = 89; } grid.minContentSize = (grid.cellSize * 2) / 10; grid.maxContentSize = (grid.cellSize * 6) / 10; bytes memory svg = abi.encodePacked( 'data:application/json;utf8,{"name":"', _getName(tokenId), '","image":"data:image/svg+xml;utf8,', "<svg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' viewBox='0 0 1200 1200' width='1200' height='1200'>", _renderGrid(grid, random), _renderCells(grid, random) ); svg = abi.encodePacked( svg, "<text style='font: bold 11px sans-serif;' text-anchor='end' x='", (1200 - grid.offset).toString(), "' y='", (1220 - grid.offset).toString(), "'", grid.dark ? " fill='#fff'" : '', '>#', tokenId.toString(), '</text>', '</svg>"' ); svg = abi.encodePacked( svg, ',"license":"Full ownership with unlimited commercial rights.","creator":"@dievardump"', ',"description":"Genesis: A seed, some love, that', "'s", 'all it takes.\\n\\nGenesis is the first of the [sol]Seedlings, an experiment of art and collectible NFTs 100% generated with Solidity.\\nby @dievardump\\n\\nLicense: Full ownership with unlimited commercial rights.\\n\\nMore info at https://solSeedlings.art"' ); return string( abi.encodePacked( svg, ',"properties":{"Colors":"', grid.colorType == ColorTypes.AUTO ? 'Auto' : ( grid.colorType == ColorTypes.BLACK_WHITE ? 'Black & White' : 'Full color' ), '","Grid":"', grid.degen ? 'Degen' : 'Normal', '","Mode":"', grid.dark ? 'Dark' : 'Light', '","Rendering":"', grid.shadowed ? 'Ghost' : 'Normal', '","Size":"', abi.encodePacked( grid.cols.toString(), '*', grid.rows.toString() ), '"', grid.shapes == grid.rows * grid.cols ? ',"Bonus":"Full Board"' : '', '}}' ) ); } function _renderGrid(Grid memory grid, Randomize.Random memory random) internal pure returns (bytes memory svg) { uint256 offsetMore = grid.degen ? grid.cellSize / 2 : 0; svg = abi.encodePacked( "<defs><pattern id='genesis-grid-", grid.baseSeed.toString(), "' x='", (grid.offset + offsetMore).toString(), "' y='", (grid.offset + offsetMore).toString(), "' width='", grid.cellSize.toString(), "' height='", grid.cellSize.toString(), "' patternUnits='userSpaceOnUse'>" ); svg = abi.encodePacked( svg, "<path d='M ", grid.cellSize.toString(), ' 0 L 0 0 0 ', grid.cellSize.toString(), "' fill='none' stroke='", grid.dark ? '#fff' : '#000', "' stroke-width='4'/></pattern>" ); if (!grid.dark) { svg = abi.encodePacked( svg, "<linearGradient id='genesis-gradient-", grid.baseSeed.toString(), "' gradientTransform='rotate(", random.next(0, 360).toString(), ")'><stop offset='0%' stop-color='", _randomHSLA(random.next(10, 45), random), "'/><stop offset='100%' stop-color='", _randomHSLA(random.next(10, 45), random), "' /></linearGradient>" ); } svg = abi.encodePacked( svg, "</defs><rect width='100%' height='100%' fill='#fff' />", grid.dark ? "<rect width='100%' height='100%' fill='#000' />" : string( abi.encodePacked( "<rect width='100%' height='100%' fill='url(#genesis-gradient-", grid.baseSeed.toString(), ")' />" ) ), "<rect x='", grid.offset.toString(), "' y='", grid.offset.toString(), "' width='", (1200 - grid.offset * 2).toString(), "' height='", (1200 - grid.offset * 2).toString(), "' fill='url(#genesis-grid-", grid.baseSeed.toString(), ")' stroke='", grid.dark ? '#fff' : '#000', "' stroke-width='4' />" ); } function _getCellData( uint16 x, uint16 y, Grid memory grid ) internal pure returns (CellData memory) { uint16 left = x * grid.cellSize; uint16 top = y * grid.cellSize; return CellData({ index: y * grid.cols + x, x: left, y: top, cx: left + grid.cellSize / 2, cy: top + grid.cellSize / 2 }); } function _renderCells(Grid memory grid, Randomize.Random memory random) internal pure returns (bytes memory) { uint256 result; CellData memory cellData; bytes memory cells = abi.encodePacked( '<g ', grid.shadowed ? string( abi.encodePacked( "style='filter: drop-shadow(16px 16px 20px ", grid.palette[0], ") invert(80%);'" ) ) : '', " stroke-width='4' stroke-linecap='round' transform='translate(", grid.offset.toString(), ',', grid.offset.toString(), ")'>" ); for (uint16 y; y < grid.rows; y++) { for (uint16 x; x < grid.cols; x++) { cellData = _getCellData(x, y, grid); result = random.next(0, grid.full ? 10 : 16); if (result <= 1) { // 0 & 1 cells = abi.encodePacked( cells, _getCircle( result != 0, random.next( grid.minContentSize / 2, grid.maxContentSize / 2 ), cellData, grid, random ) ); grid.shapes++; } else if (result <= 3) { // 2 & 3 uint256 size = random.next( grid.minContentSize, grid.maxContentSize ); cells = abi.encodePacked( cells, _getSquare(result != 5, size, cellData, grid, random) ); grid.shapes++; } else if (result == 4) { // 4 cells = abi.encodePacked( cells, _getSquare( true, grid.minContentSize, cellData, grid, random ), _getSquare( false, grid.maxContentSize, cellData, grid, random ) ); grid.shapes++; } else if (result == 5) { uint256 half = grid.maxContentSize / 2; bytes memory color = _getColor(false, random, grid); cells = abi.encodePacked( cells, _getLine( cellData.cx - half, cellData.cy - half, cellData.cx + half, cellData.cy + half, color, false ) ); grid.shapes++; } else if (result <= 8) { uint256 half = result >= 7 ? grid.minContentSize / 2 : grid.maxContentSize / 2; bool strong = result >= 7; bytes memory color = _getColor(false, random, grid); bytes memory square; if (result == 8) { square = _getSquare( false, grid.maxContentSize, cellData, grid, random ); } cells = abi.encodePacked( cells, square, _getLine( cellData.cx - half, cellData.cy - half, cellData.cx + half, cellData.cy + half, color, strong ), _getLine( cellData.cx + half, cellData.cy - half, cellData.cx - half, cellData.cy + half, color, strong ) ); grid.shapes++; } else if (result < 10) { cells = abi.encodePacked( cells, _getCircle( result == 8, grid.maxContentSize / 2, cellData, grid, random ), _getCircle( true, grid.minContentSize / 2, cellData, grid, random ) ); grid.shapes++; } } } return abi.encodePacked(cells, '</g>'); } function _getPalette(Randomize.Random memory random) internal pure returns (string[5] memory) { uint256 randPalette = random.next(0, 6); if (randPalette == 0) { return ['#F8B195', '#F67280', '#C06C84', '#6C5B7B', '#355C7D']; } else if (randPalette == 1) { return ['#173F5F', '#20639B', '#3CAEA3', '#F6D55C', '#ED553B']; } else if (randPalette == 2) { return ['#A7226E', '#EC2049', '#F26B38', '#F7DB4F', '#2F9599']; } else if (randPalette == 3) { return ['#99B898', '#FECEAB', '#FF847C', '#E84A5F', '#2A363B']; } else if (randPalette == 4) { return ['#FFADAD', '#FDFFB6', '#9BF6FF', '#BDB2FF', '#FFC6FF']; } else { return ['#EA698B', '#C05299', '#973AA8', '#6D23B6', '#571089']; } } function _getColor( bool fill, Randomize.Random memory random, Grid memory grid ) internal pure returns (bytes memory) { string memory color = grid.dark ? '#fff' : '#000'; if ( // if not full black & white ColorTypes.BLACK_WHITE != grid.colorType && // and if either full color OR 1 out of 5, colorize (ColorTypes.FULL == grid.colorType || random.next(0, 5) < 1) ) { color = grid.palette[random.next(0, grid.palette.length)]; } if (!fill) { return abi.encodePacked(" stroke='", color, "' fill='none' "); } return abi.encodePacked(" fill='", color, "' stroke='none' "); } function _randomHSLA(uint256 maxOpacity, Randomize.Random memory random) internal pure returns (bytes memory) { return abi.encodePacked( 'hsla(', random.next(0, 255).toString(), ',', random.next(0, 100).toString(), '%,', random.next(40, 100).toString(), '%,0.', maxOpacity < 10 ? '0' : '', maxOpacity.toString(), ')' ); } function _getCircle( bool fill, uint256 size, CellData memory cellData, Grid memory grid, Randomize.Random memory random ) internal pure returns (bytes memory) { return abi.encodePacked( "<circle cx='", cellData.cx.toString(), "' cy='", cellData.cy.toString(), "' r='", size.toString(), "'", _getColor(fill, random, grid), '/>' ); } function _getSquare( bool fill, uint256 size, CellData memory cellData, Grid memory grid, Randomize.Random memory random ) internal pure returns (bytes memory) { return abi.encodePacked( "<rect x='", (cellData.cx - size / 2).toString(), "' y='", (cellData.cy - size / 2).toString(), "' width='", size.toString(), "' height='", size.toString(), "'", _getColor(fill, random, grid), '/>' ); } function _getLine( uint256 x0, uint256 y0, uint256 x1, uint256 y1, bytes memory color, bool strong ) internal pure returns (bytes memory) { return abi.encodePacked( "<path d='M ", x0.toString(), ' ', y0.toString(), ' L ', x1.toString(), ' ', y1.toString(), "'", color, '', strong ? "stroke-width='8'" : '', '/>' ); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.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); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer 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); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "../../../utils/Context.sol"; /** * @title ERC721 Burnable Token * @dev ERC721 Token that can be irreversibly burned (destroyed). */ abstract contract ERC721Burnable is Context, ERC721 { /** * @dev Burns `tokenId`. See {ERC721-_burn}. * * Requirements: * * - The caller must own `tokenId` or be an approved operator. */ function burn(uint256 tokenId) public virtual { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved"); _burn(tokenId); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) private pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } }
//SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol'; import './ERC721Ownable.sol'; import './ERC721WithRoyalties.sol'; /// @title ERC721Full /// @dev This contains all the different overrides needed on /// ERC721 / Enumerable / URIStorage / Royalties /// @author Simon Fremaux (@dievardump) abstract contract ERC721Full is ERC721Ownable, ERC721Burnable, ERC721WithRoyalties { /// @inheritdoc ERC165 function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721Enumerable, ERC721, ERC721WithRoyalties) returns (bool) { return // either ERC721Enumerable ERC721Enumerable.supportsInterface(interfaceId) || // or Royalties ERC721WithRoyalties.supportsInterface(interfaceId); } /// @inheritdoc ERC721 function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal override(ERC721, ERC721Enumerable) { super._beforeTokenTransfer(from, to, tokenId); } /// @inheritdoc ERC721Ownable function isApprovedForAll(address owner_, address operator) public view override(ERC721, ERC721Ownable) returns (bool) { return ERC721Ownable.isApprovedForAll(owner_, operator); } }
//SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/access/Ownable.sol'; import '@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol'; import '../OpenSea/BaseOpenSea.sol'; /// @title ERC721Ownable /// @author Simon Fremaux (@dievardump) contract ERC721Ownable is Ownable, ERC721Enumerable, BaseOpenSea { /// @notice constructor /// @param name_ name of the contract (see ERC721) /// @param symbol_ symbol of the contract (see ERC721) /// @param contractURI_ The contract URI (containing its metadata) - can be empty "" /// @param openseaProxyRegistry_ OpenSea's proxy registry to allow gas-less listings - can be address(0) constructor( string memory name_, string memory symbol_, string memory contractURI_, address openseaProxyRegistry_ ) ERC721(name_, symbol_) { // set contract uri if present if (bytes(contractURI_).length > 0) { _setContractURI(contractURI_); } // set OpenSea proxyRegistry for gas-less trading if present if (address(0) != openseaProxyRegistry_) { _setOpenSeaRegistry(openseaProxyRegistry_); } } /// @notice Allows gas-less trading on OpenSea by safelisting the Proxy of the user /// @dev Override isApprovedForAll to check first if current operator is owner's OpenSea proxy /// @inheritdoc ERC721 function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { // allows gas less trading on OpenSea if (isOwnersOpenSeaProxy(owner, operator)) { return true; } return super.isApprovedForAll(owner, operator); } /// @notice Helper for the owner of the contract to set the new contract URI /// @dev needs to be owner /// @param contractURI_ new contract URI function setContractURI(string memory contractURI_) external onlyOwner { _setContractURI(contractURI_); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '../Royalties/ERC2981/IERC2981Royalties.sol'; import '../Royalties/RaribleSecondarySales/IRaribleSecondarySales.sol'; /// @dev This is a contract used for royalties on various platforms /// @author Simon Fremaux (@dievardump) contract ERC721WithRoyalties is IERC2981Royalties, IRaribleSecondarySales { function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == type(IERC2981Royalties).interfaceId || interfaceId == type(IRaribleSecondarySales).interfaceId; } /// @inheritdoc IERC2981Royalties function royaltyInfo(uint256, uint256) public view virtual override returns (address _receiver, uint256 _royaltyAmount) { _receiver = address(this); _royaltyAmount = 0; } /// @inheritdoc IRaribleSecondarySales function getFeeRecipients(uint256 tokenId) public view override returns (address payable[] memory recipients) { // using ERC2981 implementation to get the recipient & amount (address recipient, uint256 amount) = royaltyInfo(tokenId, 10000); if (amount != 0) { recipients = new address payable[](1); recipients[0] = payable(recipient); } } /// @inheritdoc IRaribleSecondarySales function getFeeBps(uint256 tokenId) public view override returns (uint256[] memory fees) { // using ERC2981 implementation to get the amount (, uint256 amount) = royaltyInfo(tokenId, 10000); if (amount != 0) { fees = new uint256[](1); fees[0] = amount; } } }
//SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title OpenSea contract helper that defines a few things /// @author Simon Fremaux (@dievardump) /// @dev This is a contract used to add OpenSea's support contract BaseOpenSea { string private _contractURI; ProxyRegistry private _proxyRegistry; /// @notice Returns the contract URI function. Used on OpenSea to get details // about a contract (owner, royalties etc...) function contractURI() public view returns (string memory) { return _contractURI; } /// @notice Helper for OpenSea gas-less trading /// @dev Allows to check if `operator` is owner's OpenSea proxy /// @param owner the owner we check for /// @param operator the operator (proxy) we check for function isOwnersOpenSeaProxy(address owner, address operator) public view returns (bool) { ProxyRegistry proxyRegistry = _proxyRegistry; return // we have a proxy registry address address(proxyRegistry) != address(0) && // current operator is owner's proxy address address(proxyRegistry.proxies(owner)) == operator; } /// @dev Internal function to set the _contractURI /// @param contractURI_ the new contract uri function _setContractURI(string memory contractURI_) internal { _contractURI = contractURI_; } /// @dev Internal function to set the _proxyRegistry /// @param proxyRegistryAddress the new proxy registry address function _setOpenSeaRegistry(address proxyRegistryAddress) internal { _proxyRegistry = ProxyRegistry(proxyRegistryAddress); } } contract OwnableDelegateProxy {} contract ProxyRegistry { mapping(address => OwnableDelegateProxy) public proxies; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title IERC2981Royalties /// @dev Interface for the ERC2981 - Token Royalty standard interface IERC2981Royalties { /// @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 _value - 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 value sale price function royaltyInfo(uint256 _tokenId, uint256 _value) external view returns (address _receiver, uint256 _royaltyAmount); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface IRaribleSecondarySales { /// @notice returns a list of royalties recipients /// @param tokenId the token Id to check for /// @return all the recipients for tokenId function getFeeRecipients(uint256 tokenId) external view returns (address payable[] memory); /// @notice returns a list of royalties amounts /// @param tokenId the token Id to check for /// @return all the amounts for tokenId function getFeeBps(uint256 tokenId) external view returns (uint256[] memory); }
//SPDX-License-Identifier: MIT pragma solidity ^0.8.0; // small library to randomize using (min, max, seed, offsetBit etc...) library Randomize { struct Random { uint256 seed; uint256 offsetBit; } /// @notice get an random number between (min and max) using seed and offseting bits /// this function assumes that max is never bigger than 0xffffff (hex color with opacity included) /// @dev this function is simply used to get random number using a seed. /// if does bitshifting operations to try to reuse the same seed as much as possible. /// should be enough for anyth /// @param random the randomizer /// @param min the minimum /// @param max the maximum /// @return result the resulting pseudo random number function next( Random memory random, uint256 min, uint256 max ) internal pure returns (uint256 result) { uint256 newSeed = random.seed; uint256 newOffset = random.offsetBit + 3; uint256 maxOffset = 4; uint256 mask = 0xf; if (max > 0xfffff) { mask = 0xffffff; maxOffset = 24; } else if (max > 0xffff) { mask = 0xfffff; maxOffset = 20; } else if (max > 0xfff) { mask = 0xffff; maxOffset = 16; } else if (max > 0xff) { mask = 0xfff; maxOffset = 12; } else if (max > 0xf) { mask = 0xff; maxOffset = 8; } // if offsetBit is too high to get the max number // just get new seed and restart offset to 0 if (newOffset > (256 - maxOffset)) { newOffset = 0; newSeed = uint256(keccak256(abi.encode(newSeed))); } uint256 offseted = (newSeed >> newOffset); uint256 part = offseted & mask; result = min + (part % (max - min)); random.seed = newSeed; random.offsetBit = newOffset; } function nextInt( Random memory random, uint256 min, uint256 max ) internal pure returns (int256 result) { result = int256(Randomize.next(random, min, max)); } }
//SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC721/IERC721.sol'; /// @title IVariety interface /// @author Simon Fremaux (@dievardump) interface IVariety is IERC721 { /// @notice mint `seeds.length` token(s) to `to` using `seeds` /// @param to token recipient /// @param seeds each token seed function plant(address to, bytes32[] memory seeds) external returns (uint256); /// @notice this function returns the seed associated to a tokenId /// @param tokenId to get the seed of function getTokenSeed(uint256 tokenId) external view returns (bytes32); /// @notice This function allows an owner to ask for a seed update /// this can be needed because although I test the contract as much as possible, /// it might be possible that one token does not render because the seed creates /// error or even "out of gas" computation. That's why this would allow an owner /// in such case, to request for a seed change that will then be triggered by Sower /// @param tokenId id to regenerate seed for function requestSeedChange(uint256 tokenId) external; /// @notice This function allows Sower to answer to a seed change request /// in the event where a seed would produce errors of rendering /// 1) this function can only be called by Sower if the token owner /// asked for a new seed /// 2) this function will only be called if there is a rendering error /// or, Vitalik Buterin forbid, a duplicate /// @param tokenId id to regenerate seed for function changeSeedAfterRequest(uint256 tokenId) external; }
//SPDX-License-Identifier: MIT pragma solidity ^0.8.0; // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@//////************@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@/////*******************@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@///***********************@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@///**************************@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@///**********/**************/*@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@///////****/****************//@@@@@ // @@@*********@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@(///////////*****************//@@@@@@ // @@@**************//////@@@@@@@@@@@@@@@@@@@((////////////***************//@@@@@@@ // @@@*********************////@@@@@@@@@@@@@((///////////////************//@@@@@@@@ // @@@@//**************//***//////@@@@@@@@@@(///////////////////*******//@@@@@@@@@@ // @@@@@/*****************////////((@@@@@@@((///((////////////////***//@@@@@@@@@@@@ // @@@@@@//*************////////////((@@@@@((//((////////////////////@@@@@@@@@@@@@@ // @@@@@@@//**********///////////////((@@@@((((//////////////////@@@@@@@@@@@@@@@@@@ // @@@@@@@@///******//////////////((//((@@@(((((((((((((((((@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@//*///////////////////(//((@(((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@////////////////////(((((((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@/((((/////////////((((/@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@((((((((@@@(((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@(((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@(((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&(((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&(((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&(((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@(((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@(((((((((((@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@(((((((((((((((((((((((((((@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@###(((((((((((((((((((((((((###@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@####################################@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@#############################################@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ import '@openzeppelin/contracts/utils/structs/EnumerableSet.sol'; import './IVariety.sol'; import '../NFT/ERC721Helpers/ERC721Full.sol'; /// @title Variety Contract /// @author Simon Fremaux (@dievardump) contract Variety is IVariety, ERC721Full { event SeedChangeRequest(uint256 indexed tokenId, address indexed operator); // seedlings Sower address public sower; // last tokenId uint256 public lastTokenId; // each token seed mapping(uint256 => bytes32) internal tokenSeed; // names mapping(uint256 => string) public names; // useNames mapping(bytes32 => bool) public usedNames; // tokenIds with a request for seeds change mapping(uint256 => bool) internal seedChangeRequests; modifier onlySower() { require(msg.sender == sower, 'Not Sower.'); _; } /// @notice constructor /// @param name_ name of the contract (see ERC721) /// @param symbol_ symbol of the contract (see ERC721) /// @param contractURI_ The contract URI (containing its metadata) - can be empty "" /// @param openseaProxyRegistry_ OpenSea's proxy registry to allow gas-less listings - can be address(0) /// @param sower_ Sower contract constructor( string memory name_, string memory symbol_, string memory contractURI_, address openseaProxyRegistry_, address sower_ ) ERC721Ownable(name_, symbol_, contractURI_, openseaProxyRegistry_) { sower = sower_; } /// @notice mint `seeds.length` token(s) to `to` using `seeds` /// @param to token recipient /// @param seeds each token seed function plant(address to, bytes32[] memory seeds) external virtual override onlySower returns (uint256) { uint256 tokenId = lastTokenId; for (uint256 i; i < seeds.length; i++) { tokenId++; _safeMint(to, tokenId); tokenSeed[tokenId] = seeds[i]; } lastTokenId = tokenId; return tokenId; } /// @inheritdoc ERC165 function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721Full, IERC165) returns (bool) { return super.supportsInterface(interfaceId); } /// @notice tokenURI override that returns a data:json application /// @inheritdoc ERC721 function tokenURI(uint256 tokenId) public view override returns (string memory) { require( _exists(tokenId), 'ERC721Metadata: URI query for nonexistent token' ); return _render(tokenId, tokenSeed[tokenId]); } /// @notice ERC2981 support - 4% royalties sent to Sower /// @inheritdoc IERC2981Royalties function royaltyInfo(uint256, uint256 value) public view override returns (address receiver, uint256 royaltyAmount) { receiver = sower; royaltyAmount = (value * 400) / 10000; } /// @inheritdoc IVariety function getTokenSeed(uint256 tokenId) external view override returns (bytes32) { require(_exists(tokenId), 'TokenSeed query for nonexistent token'); return tokenSeed[tokenId]; } /// @inheritdoc IVariety function requestSeedChange(uint256 tokenId) external override { require(ownerOf(tokenId) == msg.sender, 'Not token owner.'); seedChangeRequests[tokenId] = true; emit SeedChangeRequest(tokenId, msg.sender); } /// @inheritdoc IVariety function changeSeedAfterRequest(uint256 tokenId) external override onlySower { require(seedChangeRequests[tokenId] == true, 'No request for token.'); seedChangeRequests[tokenId] = false; tokenSeed[tokenId] = keccak256( abi.encode( tokenSeed[tokenId], block.timestamp, block.difficulty, blockhash(block.number - 1) ) ); } /// @notice Function allowing an owner to set the seedling name /// User needs to be extra careful. Some characters might completly break the token. /// Since the metadata are generated in the contract. /// if this ever happens, you can simply reset the name to nothing or for something else /// @dev sender must be tokenId owner /// @param tokenId the token to name /// @param seedlingName the name function setName(uint256 tokenId, string memory seedlingName) external virtual { require(ownerOf(tokenId) == msg.sender, 'Not token owner.'); bytes32 byteName = keccak256(abi.encodePacked(seedlingName)); // if the name is not empty, verify it is not used if (bytes(seedlingName).length > 0) { require(usedNames[byteName] == false, 'Name already used'); usedNames[byteName] = true; } // if it already has a name, mark all name as unused string memory oldName = names[tokenId]; if (bytes(oldName).length > 0) { byteName = keccak256(abi.encodePacked(oldName)); usedNames[byteName] = false; } names[tokenId] = seedlingName; } /// @notice function to get a token name /// @dev token must exist /// @param tokenId the token to get the name of /// @return the token name function getName(uint256 tokenId) external view returns (string memory) { require(_exists(tokenId), 'Unknown token'); return _getName(tokenId); } /// @dev internal function to get the name. Should be overrode by actual Variety contract /// @param tokenId the token to get the name of /// @return the token name function _getName(uint256 tokenId) internal view virtual returns (string memory) { return bytes(names[tokenId]).length > 0 ? names[tokenId] : 'Variety'; } /// @notice Function allowing to check the rendering for a given seed /// This allows to know what a seed would render without minting /// @param seed the seed to render /// @return the json function renderSeed(bytes32 seed) public view returns (string memory) { return _render(0, seed); } /// @dev Rendering function; should be overrode by the actual seedling contract /// @param tokenId the tokenId /// @param seed the seed /// @return the json function _render(uint256 tokenId, bytes32 seed) internal view virtual returns (string memory) { seed; return string( abi.encodePacked( 'data:application/json;utf8,{"name":"', _getName(tokenId), '"}' ) ); } }
//SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import './Variety.sol'; /// @title VarietyRepot Contract /// @author Simon Fremaux (@dievardump) contract VarietyRepot is Variety { event SeedlingsRepoted(address user, uint256[] ids); // this is the address we will repot tokens from address public oldVariety; // during the first 3 days after the start of migration // we do not allow people to name, so people with names // in the old contract have time to migrate with theirs uint256 public disabledNamingUntil; /// @notice constructor /// @param name_ name of the contract (see ERC721) /// @param symbol_ symbol of the contract (see ERC721) /// @param contractURI_ The contract URI (containing its metadata) - can be empty "" /// @param openseaProxyRegistry_ OpenSea's proxy registry to allow gas-less listings - can be address(0) /// @param sower_ Sower contract constructor( string memory name_, string memory symbol_, string memory contractURI_, address openseaProxyRegistry_, address sower_, address oldVariety_ ) Variety(name_, symbol_, contractURI_, openseaProxyRegistry_, sower_) { sower = sower_; if (address(0) != oldVariety_) { oldVariety = oldVariety_; } // during 3 days, naming will be disabled as to give time to people to migrate from the old contract // to the new and keep their name disabledNamingUntil = block.timestamp + 3 days; } /// @inheritdoc Variety function plant(address, bytes32[] memory) external view override onlySower returns (uint256) { // this ensure that noone, even Sower, can directly mint tokens on this contract // they can only be created through the repoting method revert('No direct planting, only repot.'); } /// @notice Function allowing an owner to set the seedling name /// User needs to be extra careful. Some characters might completly break the token. /// Since the metadata are generated in the contract. /// if this ever happens, you can simply reset the name to nothing or for something else /// @dev sender must be tokenId owner /// @param tokenId the token to name /// @param seedlingName the name function setName(uint256 tokenId, string memory seedlingName) external override { require( block.timestamp > disabledNamingUntil, 'Naming feature disabled.' ); require(ownerOf(tokenId) == msg.sender, 'Not token owner.'); _setName(tokenId, seedlingName); } /// @notice Checks if the string is valid (0-9a-zA-Z,- ) with no leading, trailing or consecutives spaces /// This function is a modified version of the one in the Hashmasks contract /// @dev Explain to a developer any extra details /// @param str the name to validate /// @return if the name is valid function isNameValid(string memory str) public pure returns (bool) { bytes memory strBytes = bytes(str); if (strBytes.length < 1) return false; if (strBytes.length > 32) return false; // Cannot be longer than 32 characters if (strBytes[0] == 0x20) return false; // Leading space if (strBytes[strBytes.length - 1] == 0x20) return false; // Trailing space bytes1 lastChar; bytes1 char; uint8 charCode; for (uint256 i; i < strBytes.length; i++) { char = strBytes[i]; if (char == 0x20 && lastChar == 0x20) return false; // Cannot contain continous spaces charCode = uint8(char); if ( !(charCode >= 97 && charCode <= 122) && // a - z !(charCode >= 65 && charCode <= 90) && // A - Z !(charCode >= 48 && charCode <= 57) && // 0 - 9 !(charCode == 32) && // space !(charCode == 44) && // , !(charCode == 45) // - ) { return false; } lastChar = char; } return true; } /// @notice Slugify a name (tolower and replace all non 0-9az by -) /// @param str the string to keyIfy /// @return the key function slugify(string memory str) public pure returns (string memory) { bytes memory strBytes = bytes(str); bytes memory lowerCase = new bytes(strBytes.length); uint8 charCode; bytes1 char; for (uint256 i; i < strBytes.length; i++) { char = strBytes[i]; charCode = uint8(char); // if 0-9, a-z use the character if ( (charCode >= 48 && charCode <= 57) || (charCode >= 97 && charCode <= 122) ) { lowerCase[i] = char; } else if (charCode >= 65 && charCode <= 90) { // if A-Z, use lowercase lowerCase[i] = bytes1(charCode + 32); } else { // for all others, return a - lowerCase[i] = 0x2D; } } return string(lowerCase); } /// @notice repot (migrate and burn) the seedlings of `users` from the old variety contract to the new one /// to give them the exact same token id, seed and custom name if valid, on this contract /// The old token is burned (deleted) forever from the old contract /// @dev we do not need to check that `user` we transferFrom is not the current contract, because _safeMint /// would fail if we tried to mint the same tokenId twice /// @param users an array of users /// @param maxTokensAtOnce a limit of token to migrate at once, since a few users have strong hands function repotUsersSeedlings( address[] memory users, uint256 maxTokensAtOnce ) external { require( // only the contract owner msg.sender == owner() || // or someone trying to migrate their own tokens can call this function (users.length == 1 && users[0] == msg.sender), 'Not allowed to migrate.' ); Variety oldVariety_ = Variety(oldVariety); address me = address(this); address user; uint256 migrated; for (uint256 j; j < users.length && (migrated < maxTokensAtOnce); j++) { user = users[j]; uint256 userBalance = oldVariety_.balanceOf(user); if (userBalance == 0) continue; uint256 end = userBalance; // some users might have too many tokens to do that in one transaction if (userBalance > (maxTokensAtOnce - migrated)) { end = (maxTokensAtOnce - migrated); } uint256[] memory ids = new uint256[](end); uint256 tokenId; bytes32 seed; bytes32 slugBytes; string memory seedlingName; for (uint256 i; i < end; i++) { // get the last token id owned by the user // this is a bit cheaper than always getting index 0 // because when removing last there is no "reorg" in the EnumerableSet tokenId = oldVariety_.tokenOfOwnerByIndex( user, userBalance - (i + 1) // this takes the last id in the user list ); // get the token seed seed = oldVariety_.getTokenSeed(tokenId); // get the token name seedlingName = oldVariety_.getName(tokenId); // burn the old token first oldVariety_.burn(tokenId); // create the same token id in this contract for this user _safeMint(user, tokenId, ''); // set exact same seed tokenSeed[tokenId] = seed; // if the seedling had a name and the name is valid if ( bytes(seedlingName).length > 0 && isNameValid(seedlingName) ) { slugBytes = keccak256(bytes(slugify(seedlingName))); // and is not already used if (!usedNames[slugBytes]) { // then use it usedNames[slugBytes] = true; names[tokenId] = seedlingName; } } ids[i] = tokenId; } migrated += end; emit SeedlingsRepoted(user, ids); } } /// @dev allows to set a name internally. /// checks that the name is valid and not used, else throws /// @param tokenId the token to name /// @param seedlingName the name function _setName(uint256 tokenId, string memory seedlingName) internal { bytes32 slugBytes; // if the name is not empty, require that it's valid and not used if (bytes(seedlingName).length > 0) { require(isNameValid(seedlingName) == true, 'Invalid name.'); // also requires the name is not already used slugBytes = keccak256(bytes(slugify(seedlingName))); require(usedNames[slugBytes] == false, 'Name already used.'); // set as used usedNames[slugBytes] = true; } // if it already has a name, mark the old name as unused string memory oldName = names[tokenId]; if (bytes(oldName).length > 0) { slugBytes = keccak256(bytes(slugify(oldName))); usedNames[slugBytes] = false; } names[tokenId] = seedlingName; } }
{ "evmVersion": "istanbul", "libraries": {}, "metadata": { "bytecodeHash": "ipfs", "useLiteralContent": true }, "optimizer": { "enabled": true, "runs": 200 }, "remappings": [], "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"},{"internalType":"string","name":"contractURI_","type":"string"},{"internalType":"address","name":"openseaProxyRegistry_","type":"address"},{"internalType":"address","name":"sower_","type":"address"},{"internalType":"address","name":"oldContract_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"operator","type":"address"}],"name":"SeedChangeRequest","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256[]","name":"ids","type":"uint256[]"}],"name":"SeedlingsRepoted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"changeSeedAfterRequest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"contractURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"disabledNamingUntil","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getFeeBps","outputs":[{"internalType":"uint256[]","name":"fees","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getFeeRecipients","outputs":[{"internalType":"address payable[]","name":"recipients","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getName","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getTokenSeed","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner_","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"str","type":"string"}],"name":"isNameValid","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isOwnersOpenSeaProxy","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastTokenId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"names","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"oldVariety","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"bytes32[]","name":"","type":"bytes32[]"}],"name":"plant","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"seed","type":"bytes32"}],"name":"renderSeed","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"users","type":"address[]"},{"internalType":"uint256","name":"maxTokensAtOnce","type":"uint256"}],"name":"repotUsersSeedlings","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"requestSeedChange","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"royaltyAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"contractURI_","type":"string"}],"name":"setContractURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"string","name":"seedlingName","type":"string"}],"name":"setName","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"str","type":"string"}],"name":"slugify","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"sower","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"usedNames","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : name_ (string): Genesis.sol - [sol]Seedlings
Arg [1] : symbol_ (string): SSGS#0
Arg [2] : contractURI_ (string): ipfs://ipfs/QmWQ2V2KiSjDQQJbK4htkARiwBcmtVsGayNBqzWYKCHkt1/Genesis.json
Arg [3] : openseaProxyRegistry_ (address): 0xa5409ec958C83C3f309868babACA7c86DCB077c1
Arg [4] : sower_ (address): 0x2B0F5A983316b4Fc980500b3e973D58765770BD2
Arg [5] : oldContract_ (address): 0xe006B4f0f19Ae4078DD02a1F8Df7D256362C053b
-----Encoded View---------------
14 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [3] : 000000000000000000000000a5409ec958c83c3f309868babaca7c86dcb077c1
Arg [4] : 0000000000000000000000002b0f5a983316b4fc980500b3e973d58765770bd2
Arg [5] : 000000000000000000000000e006b4f0f19ae4078dd02a1f8df7d256362c053b
Arg [6] : 000000000000000000000000000000000000000000000000000000000000001c
Arg [7] : 47656e657369732e736f6c202d205b736f6c5d536565646c696e677300000000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [9] : 5353475323300000000000000000000000000000000000000000000000000000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000047
Arg [11] : 697066733a2f2f697066732f516d57513256324b69536a4451514a624b346874
Arg [12] : 6b4152697742636d7456734761794e42717a57594b43486b74312f47656e6573
Arg [13] : 69732e6a736f6e00000000000000000000000000000000000000000000000000
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