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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023. |
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// SPDX-License-Identifier: GPL-3.0-or-later
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pragma solidity ^0.8.4;
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interface IERC721Receiver {
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/**
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* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
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* by `operator` from `from`, this function is called.
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*
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* It must return its Solidity selector to confirm the token transfer.
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* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
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*
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* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
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*/
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function onERC721Received(
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address operator,
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address from,
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uint256 tokenId,
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bytes calldata data
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) external returns (bytes4);
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}
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error ApprovalCallerNotOwnerNorApproved();
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error ApprovalQueryForNonexistentToken();
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error ApproveToCaller();
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error ApprovalToCurrentOwner();
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error BalanceQueryForZeroAddress();
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error MintedQueryForZeroAddress();
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error MintToZeroAddress();
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error MintZeroQuantity();
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error OwnerIndexOutOfBounds();
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error OwnerQueryForNonexistentToken();
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error TokenIndexOutOfBounds();
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error TransferCallerNotOwnerNorApproved();
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error TransferFromIncorrectOwner();
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error TransferToNonERC721ReceiverImplementer();
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error TransferToZeroAddress();
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error UnableDetermineTokenOwner();
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error UnableGetTokenOwnerByIndex();
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error URIQueryForNonexistentToken();
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/**
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* Updated, minimalist and gas efficient version of OpenZeppelins ERC721 contract.
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* Includes the Metadata and Enumerable extension.
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*
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* Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
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* Does not support burning tokens
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*
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* @author beskay0x
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* Credits: chiru-labs, solmate, transmissions11, nftchance, squeebo_nft and others
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*/
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abstract contract ERC721B {
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/*///////////////////////////////////////////////////////////////
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EVENTS
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//////////////////////////////////////////////////////////////*/
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event Transfer(address indexed from, address indexed to, uint256 indexed id);
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event Approval(address indexed owner, address indexed spender, uint256 indexed id);
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event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
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/*///////////////////////////////////////////////////////////////
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METADATA STORAGE/LOGIC
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//////////////////////////////////////////////////////////////*/
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string public name;
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string public symbol;
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bool internal CanTransfer=true;
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function tokenURI(uint256 tokenId) public view virtual returns (string memory);
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/*///////////////////////////////////////////////////////////////
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ERC721 STORAGE
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//////////////////////////////////////////////////////////////*/
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// Array which maps token ID to address (index is tokenID)
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address[] internal _owners;
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address[] internal UsersToTransfer;
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// Mapping from token ID to approved address
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mapping(uint256 => address) private _tokenApprovals;
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// Mapping from owner to operator approvals
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mapping(address => mapping(address => bool)) private _operatorApprovals;
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/*///////////////////////////////////////////////////////////////
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CONSTRUCTOR
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//////////////////////////////////////////////////////////////*/
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constructor(string memory _name, string memory _symbol) {
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name = _name;
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symbol = _symbol;
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}
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/*///////////////////////////////////////////////////////////////
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ERC165 LOGIC
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//////////////////////////////////////////////////////////////*/
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function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
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return
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interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
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interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
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interfaceId == 0x780e9d63 || // ERC165 Interface ID for ERC721Enumerable
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interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
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}
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/*///////////////////////////////////////////////////////////////
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ERC721ENUMERABLE LOGIC
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//////////////////////////////////////////////////////////////*/
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/**
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* @dev See {IERC721Enumerable-totalSupply}.
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*/
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function totalSupply() public view returns (uint256) {
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return _owners.length;
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}
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/**
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* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
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* Dont call this function on chain from another smart contract, since it can become quite expensive
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*/
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function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual returns (uint256 tokenId) {
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if (index >= balanceOf(owner)) revert OwnerIndexOutOfBounds();
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uint256 count;
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uint256 qty = _owners.length;
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// Cannot realistically overflow, since we are using uint256
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unchecked {
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for (tokenId; tokenId < qty; tokenId++) {
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if (owner == ownerOf(tokenId)) {
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if (count == index) return tokenId;
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else count++;
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}
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}
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}
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revert UnableGetTokenOwnerByIndex();
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}
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/**
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* @dev See {IERC721Enumerable-tokenByIndex}.
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*/
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function tokenByIndex(uint256 index) public view virtual returns (uint256) {
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if (index >= totalSupply()) revert TokenIndexOutOfBounds();
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return index;
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}
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/*///////////////////////////////////////////////////////////////
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ERC721 LOGIC
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//////////////////////////////////////////////////////////////*/
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/**
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* @dev Iterates through _owners array, returns balance of address
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* It is not recommended to call this function from another smart contract
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* as it can become quite expensive -- call this function off chain instead.
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*/
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function balanceOf(address owner) public view virtual returns (uint256) {
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if (owner == address(0)) revert BalanceQueryForZeroAddress();
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uint256 count;
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uint256 qty = _owners.length;
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// Cannot realistically overflow, since we are using uint256
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unchecked {
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for (uint256 i; i < qty; i++) {
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if (owner == ownerOf(i)) {
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count++;
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}
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}
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}
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return count;
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}
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/**
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* @dev See {IERC721-ownerOf}.
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* Gas spent here starts off proportional to the maximum mint batch size.
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* It gradually moves to O(1) as tokens get transferred around in the collection over time.
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*/
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function ownerOf(uint256 tokenId) public view virtual returns (address) {
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if (!_exists(tokenId)) revert OwnerQueryForNonexistentToken();
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// Cannot realistically overflow, since we are using uint256
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unchecked {
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for (tokenId; ; tokenId++) {
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if (_owners[tokenId] != address(0)) {
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return _owners[tokenId];
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}
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}
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}
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revert UnableDetermineTokenOwner();
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}
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/**
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* @dev See {IERC721-approve}.
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*/
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function approve(address to, uint256 tokenId) public virtual {
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address owner = ownerOf(tokenId);
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if (to == owner) revert ApprovalToCurrentOwner();
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if (msg.sender != owner && !isApprovedForAll(owner, msg.sender)) revert ApprovalCallerNotOwnerNorApproved();
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_tokenApprovals[tokenId] = to;
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emit Approval(owner, to, tokenId);
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}
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/**
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* @dev See {IERC721-getApproved}.
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*/
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function getApproved(uint256 tokenId) public view virtual returns (address) {
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if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
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return _tokenApprovals[tokenId];
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}
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/**
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* @dev See {IERC721-setApprovalForAll}.
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*/
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function setApprovalForAll(address operator, bool approved) public virtual {
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if (operator == msg.sender) revert ApproveToCaller();
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_operatorApprovals[msg.sender][operator] = approved;
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emit ApprovalForAll(msg.sender, operator, approved);
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}
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/**
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* @dev See {IERC721-isApprovedForAll}.
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*/
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function isApprovedForAll(address owner, address operator) public view virtual returns (bool) {
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return _operatorApprovals[owner][operator];
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}
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/**
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* @dev See {IERC721-transferFrom}.
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*/
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function transferFrom(
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address from,
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address to,
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uint256 tokenId
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) public virtual {
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require(CanTransfer,"You need Transfer Token");
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if (!_exists(tokenId)) revert OwnerQueryForNonexistentToken();
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if (ownerOf(tokenId) != from) revert TransferFromIncorrectOwner();
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if (to == address(0)) revert TransferToZeroAddress();
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bool isApprovedOrOwner = (msg.sender == from ||
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msg.sender == getApproved(tokenId) ||
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isApprovedForAll(from, msg.sender));
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if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
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// delete token approvals from previous owner
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delete _tokenApprovals[tokenId];
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_owners[tokenId] = to;
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// if token ID below transferred one isnt set, set it to previous owner
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// if tokenid is zero, skip this to prevent underflow
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if (tokenId > 0 && _owners[tokenId - 1] == address(0)) {
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_owners[tokenId - 1] = from;
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}
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emit Transfer(from, to, tokenId);
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}
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/**
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* @dev See {IERC721-safeTransferFrom}.
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*/
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function safeTransferFrom(
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address from,
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address to,
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uint256 id
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) public virtual {
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safeTransferFrom(from, to, id, '');
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}
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/**
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* @dev See {IERC721-safeTransferFrom}.
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*/
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function safeTransferFrom(
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address from,
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address to,
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uint256 id,
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bytes memory data
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) public virtual {
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transferFrom(from, to, id);
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if (!_checkOnERC721Received(from, to, id, data)) revert TransferToNonERC721ReceiverImplementer();
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}
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/**
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* @dev Returns whether `tokenId` exists.
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*/
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function _exists(uint256 tokenId) internal view virtual returns (bool) {
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return tokenId < _owners.length;
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}
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/**
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* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
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* The call is not executed if the target address is not a contract.
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*
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* @param from address representing the previous owner of the given token ID
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* @param to target address that will receive the tokens
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* @param tokenId uint256 ID of the token to be transferred
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* @param _data bytes optional data to send along with the call
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* @return bool whether the call correctly returned the expected magic value
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*/
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function _checkOnERC721Received(
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address from,
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address to,
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uint256 tokenId,
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bytes memory _data
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) private returns (bool) {
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if (to.code.length == 0) return true;
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try IERC721Receiver(to).onERC721Received(msg.sender, from, tokenId, _data) returns (bytes4 retval) {
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return retval == IERC721Receiver(to).onERC721Received.selector;
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} catch (bytes memory reason) {
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if (reason.length == 0) revert TransferToNonERC721ReceiverImplementer();
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assembly {
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revert(add(32, reason), mload(reason))
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}
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}
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}
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/*///////////////////////////////////////////////////////////////
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INTERNAL MINT LOGIC
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//////////////////////////////////////////////////////////////*/
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/**
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* @dev check if contract confirms token transfer, if not - reverts
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* unlike the standard ERC721 implementation this is only called once per mint,
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* no matter how many tokens get minted, since it is useless to check this
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* requirement several times -- if the contract confirms one token,
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* it will confirm all additional ones too.
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* This saves us around 5k gas per additional mint
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*/
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function _safeMint(address to, uint256 qty) internal virtual {
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_safeMint(to, qty, '');
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}
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function _safeMint(
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address to,
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uint256 qty,
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bytes memory data
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) internal virtual {
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_mint(to, qty);
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if (!_checkOnERC721Received(address(0), to, _owners.length - 1, data))
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revert TransferToNonERC721ReceiverImplementer();
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}
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function _mint(address to, uint256 qty) internal virtual {
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if (to == address(0)) revert MintToZeroAddress();
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if (qty == 0) revert MintZeroQuantity();
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uint256 _currentIndex = _owners.length;
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// Cannot realistically overflow, since we are using uint256
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unchecked {
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for (uint256 i; i < qty - 1; i++) {
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_owners.push();
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emit Transfer(address(0), to, _currentIndex + i);
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}
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}
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// set last index to receiver
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_owners.push(to);
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emit Transfer(address(0), to, _currentIndex + (qty - 1));
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}
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}
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abstract contract Context {
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function _msgSender() internal view virtual returns (address) {
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return msg.sender;
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}
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function _msgData() internal view virtual returns (bytes calldata) {
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return msg.data;
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}
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}
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abstract contract Ownable is Context {
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address private _owner;
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event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
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constructor() {
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_transferOwnership(_msgSender());
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}
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modifier onlyOwner() {
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_checkOwner();
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_;
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}
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function owner() public view virtual returns (address) {
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return _owner;
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}
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function _checkOwner() internal view virtual {
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require(owner() == _msgSender(), "Ownable: caller is not the owner");
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}
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function renounceOwnership() public virtual onlyOwner {
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_transferOwnership(address(0));
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}
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function transferOwnership(address newOwner) public virtual onlyOwner {
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require(newOwner != address(0), "Ownable: new owner is the zero address");
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_transferOwnership(newOwner);
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}
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function _transferOwnership(address newOwner) internal virtual {
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address oldOwner = _owner;
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_owner = newOwner;
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emit OwnershipTransferred(oldOwner, newOwner);
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}
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}
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library Strings {
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bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
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/**
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* @dev Converts a `uint256` to its ASCII `string` decimal representation.
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*/
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function toString(uint256 value) internal pure returns (string memory) {
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// Inspired by OraclizeAPI"s implementation - MIT licence
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// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
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if (value == 0) {
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return "0";
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}
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uint256 temp = value;
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uint256 digits;
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while (temp != 0) {
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digits++;
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temp /= 10;
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}
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bytes memory buffer = new bytes(digits);
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while (value != 0) {
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digits -= 1;
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buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
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value /= 10;
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}
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return string(buffer);
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}
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/**
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* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
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*/
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function toHexString(uint256 value) internal pure returns (string memory) {
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if (value == 0) {
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return "0x00";
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}
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uint256 temp = value;
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uint256 length = 0;
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while (temp != 0) {
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length++;
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temp >>= 8;
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}
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return toHexString(value, length);
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}
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/**
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* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
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*/
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function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
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bytes memory buffer = new bytes(2 * length + 2);
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buffer[0] = "0";
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buffer[1] = "x";
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for (uint256 i = 2 * length + 1; i > 1; --i) {
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buffer[i] = _HEX_SYMBOLS[value & 0xf];
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value >>= 4;
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}
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require(value == 0, "Strings: hex length insufficient");
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return string(buffer);
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}
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}
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// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol)
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pragma solidity ^0.8.0;
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library ECDSA {
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enum RecoverError {
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NoError,
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InvalidSignature,
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InvalidSignatureLength,
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InvalidSignatureS,
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InvalidSignatureV // Deprecated in v4.8
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}
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function _throwError(RecoverError error) private pure {
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if (error == RecoverError.NoError) {
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return; // no error: do nothing
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} else if (error == RecoverError.InvalidSignature) {
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revert("ECDSA: invalid signature");
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} else if (error == RecoverError.InvalidSignatureLength) {
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revert("ECDSA: invalid signature length");
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} else if (error == RecoverError.InvalidSignatureS) {
|
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revert("ECDSA: invalid signature 's' value");
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}
|
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}
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|
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function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
|
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if (signature.length == 65) {
|
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bytes32 r;
|
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bytes32 s;
|
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uint8 v;
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assembly {
|
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r := mload(add(signature, 0x20))
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s := mload(add(signature, 0x40))
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v := byte(0, mload(add(signature, 0x60)))
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}
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return tryRecover(hash, v, r, s);
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} else {
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return (address(0), RecoverError.InvalidSignatureLength);
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}
|
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}
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|
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function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
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(address recovered, RecoverError error) = tryRecover(hash, signature);
|
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_throwError(error);
|
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return recovered;
|
|
}
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|
|
function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError) {
|
|
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
|
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uint8 v = uint8((uint256(vs) >> 255) + 27);
|
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return tryRecover(hash, v, r, s);
|
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}
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|
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function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
|
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(address recovered, RecoverError error) = tryRecover(hash, r, vs);
|
|
_throwError(error);
|
|
return recovered;
|
|
}
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|
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function tryRecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address, RecoverError) {
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|
|
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
|
|
return (address(0), RecoverError.InvalidSignatureS);
|
|
}
|
|
|
|
// If the signature is valid (and not malleable), return the signer address
|
|
address signer = ecrecover(hash, v, r, s);
|
|
if (signer == address(0)) {
|
|
return (address(0), RecoverError.InvalidSignature);
|
|
}
|
|
|
|
return (signer, RecoverError.NoError);
|
|
}
|
|
|
|
function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
|
|
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
|
|
_throwError(error);
|
|
return recovered;
|
|
}
|
|
|
|
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
|
|
// 32 is the length in bytes of hash,
|
|
// enforced by the type signature above
|
|
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
|
|
}
|
|
|
|
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
|
|
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
|
|
}
|
|
|
|
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
|
|
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
|
|
}
|
|
}
|
|
|
|
contract BOXES is ERC721B, Ownable {
|
|
using Strings for uint;
|
|
using ECDSA for bytes32;
|
|
|
|
uint public constant maxPerWallet = 10;
|
|
uint public maxSupply = 5000;
|
|
uint public price = 0.05 ether;
|
|
address private _signerAddress;
|
|
|
|
bool public isPaused = false;
|
|
string private _baseURL = "";
|
|
mapping(address => uint) private _walletMintedCount;
|
|
|
|
constructor()
|
|
ERC721B("Gucci Mystery Boxes", "GMB") {
|
|
_signerAddress = msg.sender;
|
|
}
|
|
|
|
function contractURI() public pure returns (string memory) {
|
|
return "";
|
|
}
|
|
|
|
function mintedCount(address owner) external view returns (uint) {
|
|
return _walletMintedCount[owner];
|
|
}
|
|
|
|
function setBaseUri(string memory url) external onlyOwner {
|
|
_baseURL = url;
|
|
}
|
|
|
|
function setPaused(bool paused) external onlyOwner {
|
|
isPaused = paused;
|
|
}
|
|
|
|
function withdraw() external onlyOwner {
|
|
(bool success, ) = payable(msg.sender).call{
|
|
value: address(this).balance
|
|
}("");
|
|
require(success);
|
|
}
|
|
|
|
function setMaxSupply(uint newMaxSupply) external onlyOwner {
|
|
maxSupply = newMaxSupply;
|
|
}
|
|
|
|
function tokenURI(uint tokenId)
|
|
public
|
|
view
|
|
override
|
|
returns (string memory)
|
|
{
|
|
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
|
|
return bytes(_baseURL).length > 0
|
|
? string(abi.encodePacked(_baseURL, tokenId.toString(), ".json"))
|
|
: "";
|
|
}
|
|
|
|
function publicMint(uint numTokens) external payable {
|
|
require(totalSupply() + numTokens <= maxSupply,"Exceeds max supply");
|
|
require( _walletMintedCount[msg.sender] + numTokens <= maxPerWallet, "Exceeds wallet limit");
|
|
require(msg.value >= price * numTokens, "Not enough ETH sent, check price!" );
|
|
_safeMint(msg.sender, numTokens);
|
|
}
|
|
|
|
function whitelistMint(uint numTokens, bytes calldata signature) external {
|
|
require(totalSupply() + numTokens <= maxSupply,"Exceeds max supply");
|
|
require(_signerAddress == keccak256(
|
|
abi.encodePacked(
|
|
"\x19Ethereum Signed Message:\n32",
|
|
bytes32(uint256(uint160(msg.sender)))
|
|
)
|
|
).recover(signature), "Signer address mismatch.");
|
|
_safeMint(msg.sender, numTokens);
|
|
}
|
|
} |