{
  "language": "Solidity",
  "sources": {
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        _checkOwner();\n        _;\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if the sender is not the owner.\n     */\n    function _checkOwner() internal view virtual {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby disabling any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `to`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address to, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `from` to `to` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(address from, address to, uint256 amount) external returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC721/ERC721.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n    using Address for address;\n    using Strings for uint256;\n\n    // Token name\n    string private _name;\n\n    // Token symbol\n    string private _symbol;\n\n    // Mapping from token ID to owner address\n    mapping(uint256 => address) private _owners;\n\n    // Mapping owner address to token count\n    mapping(address => uint256) private _balances;\n\n    // Mapping from token ID to approved address\n    mapping(uint256 => address) private _tokenApprovals;\n\n    // Mapping from owner to operator approvals\n    mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n    /**\n     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n     */\n    constructor(string memory name_, string memory symbol_) {\n        _name = name_;\n        _symbol = symbol_;\n    }\n\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n        return\n            interfaceId == type(IERC721).interfaceId ||\n            interfaceId == type(IERC721Metadata).interfaceId ||\n            super.supportsInterface(interfaceId);\n    }\n\n    /**\n     * @dev See {IERC721-balanceOf}.\n     */\n    function balanceOf(address owner) public view virtual override returns (uint256) {\n        require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n        return _balances[owner];\n    }\n\n    /**\n     * @dev See {IERC721-ownerOf}.\n     */\n    function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n        address owner = _ownerOf(tokenId);\n        require(owner != address(0), \"ERC721: invalid token ID\");\n        return owner;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-name}.\n     */\n    function name() public view virtual override returns (string memory) {\n        return _name;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-symbol}.\n     */\n    function symbol() public view virtual override returns (string memory) {\n        return _symbol;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-tokenURI}.\n     */\n    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n        _requireMinted(tokenId);\n\n        string memory baseURI = _baseURI();\n        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n    }\n\n    /**\n     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n     * by default, can be overridden in child contracts.\n     */\n    function _baseURI() internal view virtual returns (string memory) {\n        return \"\";\n    }\n\n    /**\n     * @dev See {IERC721-approve}.\n     */\n    function approve(address to, uint256 tokenId) public virtual override {\n        address owner = ERC721.ownerOf(tokenId);\n        require(to != owner, \"ERC721: approval to current owner\");\n\n        require(\n            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n            \"ERC721: approve caller is not token owner or approved for all\"\n        );\n\n        _approve(to, tokenId);\n    }\n\n    /**\n     * @dev See {IERC721-getApproved}.\n     */\n    function getApproved(uint256 tokenId) public view virtual override returns (address) {\n        _requireMinted(tokenId);\n\n        return _tokenApprovals[tokenId];\n    }\n\n    /**\n     * @dev See {IERC721-setApprovalForAll}.\n     */\n    function setApprovalForAll(address operator, bool approved) public virtual override {\n        _setApprovalForAll(_msgSender(), operator, approved);\n    }\n\n    /**\n     * @dev See {IERC721-isApprovedForAll}.\n     */\n    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n        return _operatorApprovals[owner][operator];\n    }\n\n    /**\n     * @dev See {IERC721-transferFrom}.\n     */\n    function transferFrom(address from, address to, uint256 tokenId) public virtual override {\n        //solhint-disable-next-line max-line-length\n        require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner or approved\");\n\n        _transfer(from, to, tokenId);\n    }\n\n    /**\n     * @dev See {IERC721-safeTransferFrom}.\n     */\n    function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {\n        safeTransferFrom(from, to, tokenId, \"\");\n    }\n\n    /**\n     * @dev See {IERC721-safeTransferFrom}.\n     */\n    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual override {\n        require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner or approved\");\n        _safeTransfer(from, to, tokenId, data);\n    }\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n     * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n     *\n     * `data` is additional data, it has no specified format and it is sent in call to `to`.\n     *\n     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n     * implement alternative mechanisms to perform token transfer, such as signature-based.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {\n        _transfer(from, to, tokenId);\n        require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n    }\n\n    /**\n     * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist\n     */\n    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {\n        return _owners[tokenId];\n    }\n\n    /**\n     * @dev Returns whether `tokenId` exists.\n     *\n     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n     *\n     * Tokens start existing when they are minted (`_mint`),\n     * and stop existing when they are burned (`_burn`).\n     */\n    function _exists(uint256 tokenId) internal view virtual returns (bool) {\n        return _ownerOf(tokenId) != address(0);\n    }\n\n    /**\n     * @dev Returns whether `spender` is allowed to manage `tokenId`.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n        address owner = ERC721.ownerOf(tokenId);\n        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n    }\n\n    /**\n     * @dev Safely mints `tokenId` and transfers it to `to`.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must not exist.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _safeMint(address to, uint256 tokenId) internal virtual {\n        _safeMint(to, tokenId, \"\");\n    }\n\n    /**\n     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n     */\n    function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {\n        _mint(to, tokenId);\n        require(\n            _checkOnERC721Received(address(0), to, tokenId, data),\n            \"ERC721: transfer to non ERC721Receiver implementer\"\n        );\n    }\n\n    /**\n     * @dev Mints `tokenId` and transfers it to `to`.\n     *\n     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n     *\n     * Requirements:\n     *\n     * - `tokenId` must not exist.\n     * - `to` cannot be the zero address.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _mint(address to, uint256 tokenId) internal virtual {\n        require(to != address(0), \"ERC721: mint to the zero address\");\n        require(!_exists(tokenId), \"ERC721: token already minted\");\n\n        _beforeTokenTransfer(address(0), to, tokenId, 1);\n\n        // Check that tokenId was not minted by `_beforeTokenTransfer` hook\n        require(!_exists(tokenId), \"ERC721: token already minted\");\n\n        unchecked {\n            // Will not overflow unless all 2**256 token ids are minted to the same owner.\n            // Given that tokens are minted one by one, it is impossible in practice that\n            // this ever happens. Might change if we allow batch minting.\n            // The ERC fails to describe this case.\n            _balances[to] += 1;\n        }\n\n        _owners[tokenId] = to;\n\n        emit Transfer(address(0), to, tokenId);\n\n        _afterTokenTransfer(address(0), to, tokenId, 1);\n    }\n\n    /**\n     * @dev Destroys `tokenId`.\n     * The approval is cleared when the token is burned.\n     * This is an internal function that does not check if the sender is authorized to operate on the token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _burn(uint256 tokenId) internal virtual {\n        address owner = ERC721.ownerOf(tokenId);\n\n        _beforeTokenTransfer(owner, address(0), tokenId, 1);\n\n        // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook\n        owner = ERC721.ownerOf(tokenId);\n\n        // Clear approvals\n        delete _tokenApprovals[tokenId];\n\n        unchecked {\n            // Cannot overflow, as that would require more tokens to be burned/transferred\n            // out than the owner initially received through minting and transferring in.\n            _balances[owner] -= 1;\n        }\n        delete _owners[tokenId];\n\n        emit Transfer(owner, address(0), tokenId);\n\n        _afterTokenTransfer(owner, address(0), tokenId, 1);\n    }\n\n    /**\n     * @dev Transfers `tokenId` from `from` to `to`.\n     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n     *\n     * Requirements:\n     *\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _transfer(address from, address to, uint256 tokenId) internal virtual {\n        require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n        require(to != address(0), \"ERC721: transfer to the zero address\");\n\n        _beforeTokenTransfer(from, to, tokenId, 1);\n\n        // Check that tokenId was not transferred by `_beforeTokenTransfer` hook\n        require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n\n        // Clear approvals from the previous owner\n        delete _tokenApprovals[tokenId];\n\n        unchecked {\n            // `_balances[from]` cannot overflow for the same reason as described in `_burn`:\n            // `from`'s balance is the number of token held, which is at least one before the current\n            // transfer.\n            // `_balances[to]` could overflow in the conditions described in `_mint`. That would require\n            // all 2**256 token ids to be minted, which in practice is impossible.\n            _balances[from] -= 1;\n            _balances[to] += 1;\n        }\n        _owners[tokenId] = to;\n\n        emit Transfer(from, to, tokenId);\n\n        _afterTokenTransfer(from, to, tokenId, 1);\n    }\n\n    /**\n     * @dev Approve `to` to operate on `tokenId`\n     *\n     * Emits an {Approval} event.\n     */\n    function _approve(address to, uint256 tokenId) internal virtual {\n        _tokenApprovals[tokenId] = to;\n        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n    }\n\n    /**\n     * @dev Approve `operator` to operate on all of `owner` tokens\n     *\n     * Emits an {ApprovalForAll} event.\n     */\n    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {\n        require(owner != operator, \"ERC721: approve to caller\");\n        _operatorApprovals[owner][operator] = approved;\n        emit ApprovalForAll(owner, operator, approved);\n    }\n\n    /**\n     * @dev Reverts if the `tokenId` has not been minted yet.\n     */\n    function _requireMinted(uint256 tokenId) internal view virtual {\n        require(_exists(tokenId), \"ERC721: invalid token ID\");\n    }\n\n    /**\n     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n     * The call is not executed if the target address is not a contract.\n     *\n     * @param from address representing the previous owner of the given token ID\n     * @param to target address that will receive the tokens\n     * @param tokenId uint256 ID of the token to be transferred\n     * @param data bytes optional data to send along with the call\n     * @return bool whether the call correctly returned the expected magic value\n     */\n    function _checkOnERC721Received(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory data\n    ) private returns (bool) {\n        if (to.isContract()) {\n            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n                return retval == IERC721Receiver.onERC721Received.selector;\n            } catch (bytes memory reason) {\n                if (reason.length == 0) {\n                    revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n                } else {\n                    /// @solidity memory-safe-assembly\n                    assembly {\n                        revert(add(32, reason), mload(reason))\n                    }\n                }\n            }\n        } else {\n            return true;\n        }\n    }\n\n    /**\n     * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is\n     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.\n     *\n     * Calling conditions:\n     *\n     * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.\n     * - When `from` is zero, the tokens will be minted for `to`.\n     * - When `to` is zero, ``from``'s tokens will be burned.\n     * - `from` and `to` are never both zero.\n     * - `batchSize` is non-zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}\n\n    /**\n     * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is\n     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.\n     *\n     * Calling conditions:\n     *\n     * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.\n     * - When `from` is zero, the tokens were minted for `to`.\n     * - When `to` is zero, ``from``'s tokens were burned.\n     * - `from` and `to` are never both zero.\n     * - `batchSize` is non-zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}\n\n    /**\n     * @dev Unsafe write access to the balances, used by extensions that \"mint\" tokens using an {ownerOf} override.\n     *\n     * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant\n     * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such\n     * that `ownerOf(tokenId)` is `a`.\n     */\n    // solhint-disable-next-line func-name-mixedcase\n    function __unsafe_increaseBalance(address account, uint256 amount) internal {\n        _balances[account] += amount;\n    }\n}\n"
    },
    "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n    /**\n     * @dev Returns the token collection name.\n     */\n    function name() external view returns (string memory);\n\n    /**\n     * @dev Returns the token collection symbol.\n     */\n    function symbol() external view returns (string memory);\n\n    /**\n     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n     */\n    function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC721/IERC721.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n    /**\n     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n    /**\n     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n     */\n    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n    /**\n     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n     */\n    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n    /**\n     * @dev Returns the number of tokens in ``owner``'s account.\n     */\n    function balanceOf(address owner) external view returns (uint256 balance);\n\n    /**\n     * @dev Returns the owner of the `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function ownerOf(uint256 tokenId) external view returns (address owner);\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n     * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(address from, address to, uint256 tokenId) external;\n\n    /**\n     * @dev Transfers `tokenId` token from `from` to `to`.\n     *\n     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721\n     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must\n     * understand this adds an external call which potentially creates a reentrancy vulnerability.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(address from, address to, uint256 tokenId) external;\n\n    /**\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n     * The approval is cleared when the token is transferred.\n     *\n     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n     *\n     * Requirements:\n     *\n     * - The caller must own the token or be an approved operator.\n     * - `tokenId` must exist.\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address to, uint256 tokenId) external;\n\n    /**\n     * @dev Approve or remove `operator` as an operator for the caller.\n     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n     *\n     * Requirements:\n     *\n     * - The `operator` cannot be the caller.\n     *\n     * Emits an {ApprovalForAll} event.\n     */\n    function setApprovalForAll(address operator, bool approved) external;\n\n    /**\n     * @dev Returns the account approved for `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function getApproved(uint256 tokenId) external view returns (address operator);\n\n    /**\n     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n     *\n     * See {setApprovalForAll}\n     */\n    function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n    /**\n     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n     * by `operator` from `from`, this function is called.\n     *\n     * It must return its Solidity selector to confirm the token transfer.\n     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n     *\n     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n     */\n    function onERC721Received(\n        address operator,\n        address from,\n        uint256 tokenId,\n        bytes calldata data\n    ) external returns (bytes4);\n}\n"
    },
    "@openzeppelin/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     *\n     * Furthermore, `isContract` will also return true if the target contract within\n     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,\n     * which only has an effect at the end of a transaction.\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n     *\n     * _Available since v4.8._\n     */\n    function verifyCallResultFromTarget(\n        address target,\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        if (success) {\n            if (returndata.length == 0) {\n                // only check isContract if the call was successful and the return data is empty\n                // otherwise we already know that it was a contract\n                require(isContract(target), \"Address: call to non-contract\");\n            }\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    /**\n     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason or using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    function _revert(bytes memory returndata, string memory errorMessage) private pure {\n        // Look for revert reason and bubble it up if present\n        if (returndata.length > 0) {\n            // The easiest way to bubble the revert reason is using memory via assembly\n            /// @solidity memory-safe-assembly\n            assembly {\n                let returndata_size := mload(returndata)\n                revert(add(32, returndata), returndata_size)\n            }\n        } else {\n            revert(errorMessage);\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/introspection/ERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IERC165).interfaceId;\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/utils/math/Math.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary Math {\n    enum Rounding {\n        Down, // Toward negative infinity\n        Up, // Toward infinity\n        Zero // Toward zero\n    }\n\n    /**\n     * @dev Returns the largest of two numbers.\n     */\n    function max(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a > b ? a : b;\n    }\n\n    /**\n     * @dev Returns the smallest of two numbers.\n     */\n    function min(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a < b ? a : b;\n    }\n\n    /**\n     * @dev Returns the average of two numbers. The result is rounded towards\n     * zero.\n     */\n    function average(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b) / 2 can overflow.\n        return (a & b) + (a ^ b) / 2;\n    }\n\n    /**\n     * @dev Returns the ceiling of the division of two numbers.\n     *\n     * This differs from standard division with `/` in that it rounds up instead\n     * of rounding down.\n     */\n    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b - 1) / b can overflow on addition, so we distribute.\n        return a == 0 ? 0 : (a - 1) / b + 1;\n    }\n\n    /**\n     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0\n     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)\n     * with further edits by Uniswap Labs also under MIT license.\n     */\n    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {\n        unchecked {\n            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use\n            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256\n            // variables such that product = prod1 * 2^256 + prod0.\n            uint256 prod0; // Least significant 256 bits of the product\n            uint256 prod1; // Most significant 256 bits of the product\n            assembly {\n                let mm := mulmod(x, y, not(0))\n                prod0 := mul(x, y)\n                prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n            }\n\n            // Handle non-overflow cases, 256 by 256 division.\n            if (prod1 == 0) {\n                // Solidity will revert if denominator == 0, unlike the div opcode on its own.\n                // The surrounding unchecked block does not change this fact.\n                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.\n                return prod0 / denominator;\n            }\n\n            // Make sure the result is less than 2^256. Also prevents denominator == 0.\n            require(denominator > prod1, \"Math: mulDiv overflow\");\n\n            ///////////////////////////////////////////////\n            // 512 by 256 division.\n            ///////////////////////////////////////////////\n\n            // Make division exact by subtracting the remainder from [prod1 prod0].\n            uint256 remainder;\n            assembly {\n                // Compute remainder using mulmod.\n                remainder := mulmod(x, y, denominator)\n\n                // Subtract 256 bit number from 512 bit number.\n                prod1 := sub(prod1, gt(remainder, prod0))\n                prod0 := sub(prod0, remainder)\n            }\n\n            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.\n            // See https://cs.stackexchange.com/q/138556/92363.\n\n            // Does not overflow because the denominator cannot be zero at this stage in the function.\n            uint256 twos = denominator & (~denominator + 1);\n            assembly {\n                // Divide denominator by twos.\n                denominator := div(denominator, twos)\n\n                // Divide [prod1 prod0] by twos.\n                prod0 := div(prod0, twos)\n\n                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.\n                twos := add(div(sub(0, twos), twos), 1)\n            }\n\n            // Shift in bits from prod1 into prod0.\n            prod0 |= prod1 * twos;\n\n            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such\n            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for\n            // four bits. That is, denominator * inv = 1 mod 2^4.\n            uint256 inverse = (3 * denominator) ^ 2;\n\n            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works\n            // in modular arithmetic, doubling the correct bits in each step.\n            inverse *= 2 - denominator * inverse; // inverse mod 2^8\n            inverse *= 2 - denominator * inverse; // inverse mod 2^16\n            inverse *= 2 - denominator * inverse; // inverse mod 2^32\n            inverse *= 2 - denominator * inverse; // inverse mod 2^64\n            inverse *= 2 - denominator * inverse; // inverse mod 2^128\n            inverse *= 2 - denominator * inverse; // inverse mod 2^256\n\n            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.\n            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is\n            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1\n            // is no longer required.\n            result = prod0 * inverse;\n            return result;\n        }\n    }\n\n    /**\n     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.\n     */\n    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {\n        uint256 result = mulDiv(x, y, denominator);\n        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {\n            result += 1;\n        }\n        return result;\n    }\n\n    /**\n     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.\n     *\n     * Inspired by Henry S. Warren, Jr.'s \"Hacker's Delight\" (Chapter 11).\n     */\n    function sqrt(uint256 a) internal pure returns (uint256) {\n        if (a == 0) {\n            return 0;\n        }\n\n        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.\n        //\n        // We know that the \"msb\" (most significant bit) of our target number `a` is a power of 2 such that we have\n        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.\n        //\n        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`\n        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`\n        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`\n        //\n        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.\n        uint256 result = 1 << (log2(a) >> 1);\n\n        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,\n        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at\n        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision\n        // into the expected uint128 result.\n        unchecked {\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            return min(result, a / result);\n        }\n    }\n\n    /**\n     * @notice Calculates sqrt(a), following the selected rounding direction.\n     */\n    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = sqrt(a);\n            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 2, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log2(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >> 128 > 0) {\n                value >>= 128;\n                result += 128;\n            }\n            if (value >> 64 > 0) {\n                value >>= 64;\n                result += 64;\n            }\n            if (value >> 32 > 0) {\n                value >>= 32;\n                result += 32;\n            }\n            if (value >> 16 > 0) {\n                value >>= 16;\n                result += 16;\n            }\n            if (value >> 8 > 0) {\n                value >>= 8;\n                result += 8;\n            }\n            if (value >> 4 > 0) {\n                value >>= 4;\n                result += 4;\n            }\n            if (value >> 2 > 0) {\n                value >>= 2;\n                result += 2;\n            }\n            if (value >> 1 > 0) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log2(value);\n            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 10, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log10(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >= 10 ** 64) {\n                value /= 10 ** 64;\n                result += 64;\n            }\n            if (value >= 10 ** 32) {\n                value /= 10 ** 32;\n                result += 32;\n            }\n            if (value >= 10 ** 16) {\n                value /= 10 ** 16;\n                result += 16;\n            }\n            if (value >= 10 ** 8) {\n                value /= 10 ** 8;\n                result += 8;\n            }\n            if (value >= 10 ** 4) {\n                value /= 10 ** 4;\n                result += 4;\n            }\n            if (value >= 10 ** 2) {\n                value /= 10 ** 2;\n                result += 2;\n            }\n            if (value >= 10 ** 1) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log10(value);\n            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 256, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     *\n     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.\n     */\n    function log256(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >> 128 > 0) {\n                value >>= 128;\n                result += 16;\n            }\n            if (value >> 64 > 0) {\n                value >>= 64;\n                result += 8;\n            }\n            if (value >> 32 > 0) {\n                value >>= 32;\n                result += 4;\n            }\n            if (value >> 16 > 0) {\n                value >>= 16;\n                result += 2;\n            }\n            if (value >> 8 > 0) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log256(value);\n            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/math/SignedMath.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard signed math utilities missing in the Solidity language.\n */\nlibrary SignedMath {\n    /**\n     * @dev Returns the largest of two signed numbers.\n     */\n    function max(int256 a, int256 b) internal pure returns (int256) {\n        return a > b ? a : b;\n    }\n\n    /**\n     * @dev Returns the smallest of two signed numbers.\n     */\n    function min(int256 a, int256 b) internal pure returns (int256) {\n        return a < b ? a : b;\n    }\n\n    /**\n     * @dev Returns the average of two signed numbers without overflow.\n     * The result is rounded towards zero.\n     */\n    function average(int256 a, int256 b) internal pure returns (int256) {\n        // Formula from the book \"Hacker's Delight\"\n        int256 x = (a & b) + ((a ^ b) >> 1);\n        return x + (int256(uint256(x) >> 255) & (a ^ b));\n    }\n\n    /**\n     * @dev Returns the absolute unsigned value of a signed value.\n     */\n    function abs(int256 n) internal pure returns (uint256) {\n        unchecked {\n            // must be unchecked in order to support `n = type(int256).min`\n            return uint256(n >= 0 ? n : -n);\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/Strings.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./math/Math.sol\";\nimport \"./math/SignedMath.sol\";\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n    bytes16 private constant _SYMBOLS = \"0123456789abcdef\";\n    uint8 private constant _ADDRESS_LENGTH = 20;\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n     */\n    function toString(uint256 value) internal pure returns (string memory) {\n        unchecked {\n            uint256 length = Math.log10(value) + 1;\n            string memory buffer = new string(length);\n            uint256 ptr;\n            /// @solidity memory-safe-assembly\n            assembly {\n                ptr := add(buffer, add(32, length))\n            }\n            while (true) {\n                ptr--;\n                /// @solidity memory-safe-assembly\n                assembly {\n                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))\n                }\n                value /= 10;\n                if (value == 0) break;\n            }\n            return buffer;\n        }\n    }\n\n    /**\n     * @dev Converts a `int256` to its ASCII `string` decimal representation.\n     */\n    function toString(int256 value) internal pure returns (string memory) {\n        return string(abi.encodePacked(value < 0 ? \"-\" : \"\", toString(SignedMath.abs(value))));\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n     */\n    function toHexString(uint256 value) internal pure returns (string memory) {\n        unchecked {\n            return toHexString(value, Math.log256(value) + 1);\n        }\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n     */\n    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n        bytes memory buffer = new bytes(2 * length + 2);\n        buffer[0] = \"0\";\n        buffer[1] = \"x\";\n        for (uint256 i = 2 * length + 1; i > 1; --i) {\n            buffer[i] = _SYMBOLS[value & 0xf];\n            value >>= 4;\n        }\n        require(value == 0, \"Strings: hex length insufficient\");\n        return string(buffer);\n    }\n\n    /**\n     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n     */\n    function toHexString(address addr) internal pure returns (string memory) {\n        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n    }\n\n    /**\n     * @dev Returns true if the two strings are equal.\n     */\n    function equal(string memory a, string memory b) internal pure returns (bool) {\n        return keccak256(bytes(a)) == keccak256(bytes(b));\n    }\n}\n"
    },
    "contracts/ethregistrar/BaseRegistrarImplementation.sol": {
      "content": "pragma solidity >=0.8.4;\n\nimport \"../registry/ENS.sol\";\nimport \"./IBaseRegistrar.sol\";\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\n\ncontract BaseRegistrarImplementation is ERC721, IBaseRegistrar, Ownable {\n    // A map of expiry times\n    mapping(uint256 => uint256) expiries;\n    // The ENS registry\n    ENS public ens;\n    // The namehash of the TLD this registrar owns (eg, .eth)\n    bytes32 public baseNode;\n    // A map of addresses that are authorised to register and renew names.\n    mapping(address => bool) public controllers;\n    uint256 public constant GRACE_PERIOD = 90 days;\n    bytes4 private constant INTERFACE_META_ID =\n        bytes4(keccak256(\"supportsInterface(bytes4)\"));\n    bytes4 private constant ERC721_ID =\n        bytes4(\n            keccak256(\"balanceOf(address)\") ^\n                keccak256(\"ownerOf(uint256)\") ^\n                keccak256(\"approve(address,uint256)\") ^\n                keccak256(\"getApproved(uint256)\") ^\n                keccak256(\"setApprovalForAll(address,bool)\") ^\n                keccak256(\"isApprovedForAll(address,address)\") ^\n                keccak256(\"transferFrom(address,address,uint256)\") ^\n                keccak256(\"safeTransferFrom(address,address,uint256)\") ^\n                keccak256(\"safeTransferFrom(address,address,uint256,bytes)\")\n        );\n    bytes4 private constant RECLAIM_ID =\n        bytes4(keccak256(\"reclaim(uint256,address)\"));\n\n    /// v2.1.3 version of _isApprovedOrOwner which calls ownerOf(tokenId) and takes grace period into consideration instead of ERC721.ownerOf(tokenId);\n    /// https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.1.3/contracts/token/ERC721/ERC721.sol#L187\n    /// @dev Returns whether the given spender can transfer a given token ID\n    /// @param spender address of the spender to query\n    /// @param tokenId uint256 ID of the token to be transferred\n    /// @return bool whether the msg.sender is approved for the given token ID,\n    ///              is an operator of the owner, or is the owner of the token\n    function _isApprovedOrOwner(\n        address spender,\n        uint256 tokenId\n    ) internal view override returns (bool) {\n        address owner = ownerOf(tokenId);\n        return (spender == owner ||\n            getApproved(tokenId) == spender ||\n            isApprovedForAll(owner, spender));\n    }\n\n    constructor(ENS _ens, bytes32 _baseNode) ERC721(\"\", \"\") {\n        ens = _ens;\n        baseNode = _baseNode;\n    }\n\n    modifier live() {\n        require(ens.owner(baseNode) == address(this));\n        _;\n    }\n\n    modifier onlyController() {\n        require(controllers[msg.sender]);\n        _;\n    }\n\n    /// @dev Gets the owner of the specified token ID. Names become unowned\n    ///      when their registration expires.\n    /// @param tokenId uint256 ID of the token to query the owner of\n    /// @return address currently marked as the owner of the given token ID\n    function ownerOf(\n        uint256 tokenId\n    ) public view override(IERC721, ERC721) returns (address) {\n        require(expiries[tokenId] > block.timestamp);\n        return super.ownerOf(tokenId);\n    }\n\n    // Authorises a controller, who can register and renew domains.\n    function addController(address controller) external override onlyOwner {\n        controllers[controller] = true;\n        emit ControllerAdded(controller);\n    }\n\n    // Revoke controller permission for an address.\n    function removeController(address controller) external override onlyOwner {\n        controllers[controller] = false;\n        emit ControllerRemoved(controller);\n    }\n\n    // Set the resolver for the TLD this registrar manages.\n    function setResolver(address resolver) external override onlyOwner {\n        ens.setResolver(baseNode, resolver);\n    }\n\n    // Returns the expiration timestamp of the specified id.\n    function nameExpires(uint256 id) external view override returns (uint256) {\n        return expiries[id];\n    }\n\n    // Returns true iff the specified name is available for registration.\n    function available(uint256 id) public view override returns (bool) {\n        // Not available if it's registered here or in its grace period.\n        return expiries[id] + GRACE_PERIOD < block.timestamp;\n    }\n\n    /// @dev Register a name.\n    /// @param id The token ID (keccak256 of the label).\n    /// @param owner The address that should own the registration.\n    /// @param duration Duration in seconds for the registration.\n    function register(\n        uint256 id,\n        address owner,\n        uint256 duration\n    ) external override returns (uint256) {\n        return _register(id, owner, duration, true);\n    }\n\n    /// @dev Register a name, without modifying the registry.\n    /// @param id The token ID (keccak256 of the label).\n    /// @param owner The address that should own the registration.\n    /// @param duration Duration in seconds for the registration.\n    function registerOnly(\n        uint256 id,\n        address owner,\n        uint256 duration\n    ) external returns (uint256) {\n        return _register(id, owner, duration, false);\n    }\n\n    function _register(\n        uint256 id,\n        address owner,\n        uint256 duration,\n        bool updateRegistry\n    ) internal live onlyController returns (uint256) {\n        require(available(id));\n        require(\n            block.timestamp + duration + GRACE_PERIOD >\n                block.timestamp + GRACE_PERIOD\n        ); // Prevent future overflow\n\n        expiries[id] = block.timestamp + duration;\n        if (_exists(id)) {\n            // Name was previously owned, and expired\n            _burn(id);\n        }\n        _mint(owner, id);\n        if (updateRegistry) {\n            ens.setSubnodeOwner(baseNode, bytes32(id), owner);\n        }\n\n        emit NameRegistered(id, owner, block.timestamp + duration);\n\n        return block.timestamp + duration;\n    }\n\n    function renew(\n        uint256 id,\n        uint256 duration\n    ) external override live onlyController returns (uint256) {\n        require(expiries[id] + GRACE_PERIOD >= block.timestamp); // Name must be registered here or in grace period\n        require(\n            expiries[id] + duration + GRACE_PERIOD > duration + GRACE_PERIOD\n        ); // Prevent future overflow\n\n        expiries[id] += duration;\n        emit NameRenewed(id, expiries[id]);\n        return expiries[id];\n    }\n\n    /// @dev Reclaim ownership of a name in ENS, if you own it in the registrar.\n    function reclaim(uint256 id, address owner) external override live {\n        require(_isApprovedOrOwner(msg.sender, id));\n        ens.setSubnodeOwner(baseNode, bytes32(id), owner);\n    }\n\n    function supportsInterface(\n        bytes4 interfaceID\n    ) public view override(ERC721, IERC165) returns (bool) {\n        return\n            interfaceID == INTERFACE_META_ID ||\n            interfaceID == ERC721_ID ||\n            interfaceID == RECLAIM_ID;\n    }\n}\n"
    },
    "contracts/ethregistrar/BulkRenewal.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity ~0.8.17;\n\nimport \"../registry/ENS.sol\";\nimport \"./ETHRegistrarController.sol\";\nimport \"./IETHRegistrarController.sol\";\nimport \"../resolvers/Resolver.sol\";\nimport \"./IBulkRenewal.sol\";\nimport \"./IPriceOracle.sol\";\n\nimport \"@openzeppelin/contracts/utils/introspection/IERC165.sol\";\n\ncontract BulkRenewal is IBulkRenewal {\n    bytes32 private constant ETH_NAMEHASH =\n        0x93cdeb708b7545dc668eb9280176169d1c33cfd8ed6f04690a0bcc88a93fc4ae;\n\n    ENS public immutable ens;\n\n    constructor(ENS _ens) {\n        ens = _ens;\n    }\n\n    function getController() internal view returns (ETHRegistrarController) {\n        Resolver r = Resolver(ens.resolver(ETH_NAMEHASH));\n        return\n            ETHRegistrarController(\n                r.interfaceImplementer(\n                    ETH_NAMEHASH,\n                    type(IETHRegistrarController).interfaceId\n                )\n            );\n    }\n\n    function rentPrice(\n        string[] calldata names,\n        uint256 duration\n    ) external view override returns (uint256 total) {\n        ETHRegistrarController controller = getController();\n        uint256 length = names.length;\n        for (uint256 i = 0; i < length; ) {\n            IPriceOracle.Price memory price = controller.rentPrice(\n                names[i],\n                duration\n            );\n            unchecked {\n                ++i;\n                total += (price.base + price.premium);\n            }\n        }\n    }\n\n    function renewAll(\n        string[] calldata names,\n        uint256 duration,\n        bytes32 referrer\n    ) external payable override {\n        ETHRegistrarController controller = getController();\n        uint256 length = names.length;\n        uint256 total;\n        for (uint256 i = 0; i < length; ) {\n            IPriceOracle.Price memory price = controller.rentPrice(\n                names[i],\n                duration\n            );\n            uint256 totalPrice = price.base + price.premium;\n            controller.renew{value: totalPrice}(names[i], duration, referrer);\n            unchecked {\n                ++i;\n                total += totalPrice;\n            }\n        }\n        // Send any excess funds back\n        payable(msg.sender).transfer(address(this).balance);\n    }\n\n    function supportsInterface(\n        bytes4 interfaceID\n    ) external pure returns (bool) {\n        return\n            interfaceID == type(IERC165).interfaceId ||\n            interfaceID == type(IBulkRenewal).interfaceId;\n    }\n}\n"
    },
    "contracts/ethregistrar/ETHRegistrarController.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity ~0.8.17;\n\nimport {Ownable} from \"@openzeppelin/contracts/access/Ownable.sol\";\nimport {ERC165} from \"@openzeppelin/contracts/utils/introspection/ERC165.sol\";\nimport {IERC165} from \"@openzeppelin/contracts/utils/introspection/IERC165.sol\";\n\nimport {BaseRegistrarImplementation} from \"./BaseRegistrarImplementation.sol\";\nimport {StringUtils} from \"../utils/StringUtils.sol\";\nimport {Resolver} from \"../resolvers/Resolver.sol\";\nimport {ENS} from \"../registry/ENS.sol\";\nimport {IReverseRegistrar} from \"../reverseRegistrar/IReverseRegistrar.sol\";\nimport {IDefaultReverseRegistrar} from \"../reverseRegistrar/IDefaultReverseRegistrar.sol\";\nimport {IETHRegistrarController, IPriceOracle} from \"./IETHRegistrarController.sol\";\nimport {ERC20Recoverable} from \"../utils/ERC20Recoverable.sol\";\n\n/// @dev A registrar controller for registering and renewing names at fixed cost.\ncontract ETHRegistrarController is\n    Ownable,\n    IETHRegistrarController,\n    ERC165,\n    ERC20Recoverable\n{\n    using StringUtils for *;\n\n    /// @notice The bitmask for the Ethereum reverse record.\n    uint8 constant REVERSE_RECORD_ETHEREUM_BIT = 1;\n\n    /// @notice The bitmask for the default reverse record.\n    uint8 constant REVERSE_RECORD_DEFAULT_BIT = 2;\n\n    /// @notice The minimum duration for a registration.\n    uint256 public constant MIN_REGISTRATION_DURATION = 28 days;\n\n    // @notice The node (i.e. namehash) for the eth TLD.\n    bytes32 private constant ETH_NODE =\n        0x93cdeb708b7545dc668eb9280176169d1c33cfd8ed6f04690a0bcc88a93fc4ae;\n\n    /// @notice The maximum expiry time for a registration.\n    uint64 private constant MAX_EXPIRY = type(uint64).max;\n\n    /// @notice The ENS registry.\n    ENS public immutable ens;\n\n    // @notice The base registrar implementation for the eth TLD.\n    BaseRegistrarImplementation immutable base;\n\n    /// @notice The minimum time a commitment must exist to be valid.\n    uint256 public immutable minCommitmentAge;\n\n    /// @notice The maximum time a commitment can exist to be valid.\n    uint256 public immutable maxCommitmentAge;\n\n    /// @notice The registrar for addr.reverse. (i.e. reverse for coinType 60)\n    IReverseRegistrar public immutable reverseRegistrar;\n\n    /// @notice The registrar for default.reverse. (i.e. fallback reverse for all EVM chains)\n    IDefaultReverseRegistrar public immutable defaultReverseRegistrar;\n\n    /// @notice The price oracle for the eth TLD.\n    IPriceOracle public immutable prices;\n\n    /// @notice A mapping of commitments to their timestamp.\n    mapping(bytes32 => uint256) public commitments;\n\n    /// @notice Thrown when a commitment is not found.\n    error CommitmentNotFound(bytes32 commitment);\n\n    /// @notice Thrown when a commitment is too new.\n    error CommitmentTooNew(\n        bytes32 commitment,\n        uint256 minimumCommitmentTimestamp,\n        uint256 currentTimestamp\n    );\n\n    /// @notice Thrown when a commitment is too old.\n    error CommitmentTooOld(\n        bytes32 commitment,\n        uint256 maximumCommitmentTimestamp,\n        uint256 currentTimestamp\n    );\n\n    /// @notice Thrown when a name is not available to register.\n    error NameNotAvailable(string name);\n\n    /// @notice Thrown when the duration supplied for a registration is too short.\n    error DurationTooShort(uint256 duration);\n\n    /// @notice Thrown when data is supplied for a registration without a resolver.\n    error ResolverRequiredWhenDataSupplied();\n\n    /// @notice Thrown when a reverse record is requested without a resolver.\n    error ResolverRequiredForReverseRecord();\n\n    /// @notice Thrown when a matching unexpired commitment exists.\n    error UnexpiredCommitmentExists(bytes32 commitment);\n\n    /// @notice Thrown when the value sent for a registration is insufficient.\n    error InsufficientValue();\n\n    /// @notice Thrown when the maximum commitment age is too low.\n    error MaxCommitmentAgeTooLow();\n\n    /// @notice Thrown when the maximum commitment age is too high.\n    error MaxCommitmentAgeTooHigh();\n\n    /// @notice Emitted when a name is registered.\n    ///\n    /// @param label The label of the name.\n    /// @param labelhash The keccak256 hash of the label.\n    /// @param owner The owner of the name.\n    /// @param baseCost The base cost of the name.\n    /// @param premium The premium cost of the name.\n    /// @param expires The expiry time of the name.\n    /// @param referrer The referrer of the registration.\n    event NameRegistered(\n        string label,\n        bytes32 indexed labelhash,\n        address indexed owner,\n        uint256 baseCost,\n        uint256 premium,\n        uint256 expires,\n        bytes32 referrer\n    );\n\n    /// @notice Emitted when a name is renewed.\n    ///\n    /// @param label The label of the name.\n    /// @param labelhash The keccak256 hash of the label.\n    /// @param cost The cost of the name.\n    /// @param expires The expiry time of the name.\n    /// @param referrer The referrer of the registration.\n    event NameRenewed(\n        string label,\n        bytes32 indexed labelhash,\n        uint256 cost,\n        uint256 expires,\n        bytes32 referrer\n    );\n\n    /// @notice Constructor for the ETHRegistrarController.\n    ///\n    /// @param _base The base registrar implementation for the eth TLD.\n    /// @param _prices The price oracle for the eth TLD.\n    /// @param _minCommitmentAge The minimum time a commitment must exist to be valid.\n    /// @param _maxCommitmentAge The maximum time a commitment can exist to be valid.\n    /// @param _reverseRegistrar The registrar for addr.reverse.\n    /// @param _defaultReverseRegistrar The registrar for default.reverse.\n    /// @param _ens The ENS registry.\n    constructor(\n        BaseRegistrarImplementation _base,\n        IPriceOracle _prices,\n        uint256 _minCommitmentAge,\n        uint256 _maxCommitmentAge,\n        IReverseRegistrar _reverseRegistrar,\n        IDefaultReverseRegistrar _defaultReverseRegistrar,\n        ENS _ens\n    ) {\n        if (_maxCommitmentAge <= _minCommitmentAge)\n            revert MaxCommitmentAgeTooLow();\n\n        if (_maxCommitmentAge > block.timestamp)\n            revert MaxCommitmentAgeTooHigh();\n\n        ens = _ens;\n        base = _base;\n        prices = _prices;\n        minCommitmentAge = _minCommitmentAge;\n        maxCommitmentAge = _maxCommitmentAge;\n        reverseRegistrar = _reverseRegistrar;\n        defaultReverseRegistrar = _defaultReverseRegistrar;\n    }\n\n    /// @notice Returns the price of a registration for the given label and duration.\n    ///\n    /// @param label The label of the name.\n    /// @param duration The duration of the registration.\n    /// @return price The price of the registration.\n    function rentPrice(\n        string calldata label,\n        uint256 duration\n    ) public view override returns (IPriceOracle.Price memory price) {\n        bytes32 labelhash = keccak256(bytes(label));\n        price = _rentPrice(label, labelhash, duration);\n    }\n\n    /// @notice Returns true if the label is valid for registration.\n    ///\n    /// @param label The label to check.\n    /// @return True if the label is valid, false otherwise.\n    function valid(string calldata label) public pure returns (bool) {\n        return label.strlen() >= 3;\n    }\n\n    /// @notice Returns true if the label is valid and available for registration.\n    ///\n    /// @param label The label to check.\n    /// @return True if the label is valid and available, false otherwise.\n    function available(\n        string calldata label\n    ) public view override returns (bool) {\n        bytes32 labelhash = keccak256(bytes(label));\n        return _available(label, labelhash);\n    }\n\n    /// @notice Returns the commitment for a registration.\n    ///\n    /// @param registration The registration to make a commitment for.\n    /// @return commitment The commitment for the registration.\n    function makeCommitment(\n        Registration calldata registration\n    ) public pure override returns (bytes32 commitment) {\n        if (registration.data.length > 0 && registration.resolver == address(0))\n            revert ResolverRequiredWhenDataSupplied();\n\n        if (\n            registration.reverseRecord != 0 &&\n            registration.resolver == address(0)\n        ) revert ResolverRequiredForReverseRecord();\n\n        if (registration.duration < MIN_REGISTRATION_DURATION)\n            revert DurationTooShort(registration.duration);\n\n        return keccak256(abi.encode(registration));\n    }\n\n    /// @notice Commits a registration.\n    ///\n    /// @param commitment The commitment to commit.\n    function commit(bytes32 commitment) public override {\n        if (commitments[commitment] + maxCommitmentAge >= block.timestamp) {\n            revert UnexpiredCommitmentExists(commitment);\n        }\n        commitments[commitment] = block.timestamp;\n    }\n\n    /// @notice Registers a name.\n    ///\n    /// @param registration The registration to register.\n    /// @param registration.label The label of the name.\n    /// @param registration.owner The owner of the name.\n    /// @param registration.duration The duration of the registration.\n    /// @param registration.resolver The resolver for the name.\n    /// @param registration.data The data for the name.\n    /// @param registration.reverseRecord Which reverse record(s) to set.\n    /// @param registration.referrer The referrer of the registration.\n    function register(\n        Registration calldata registration\n    ) public payable override {\n        bytes32 labelhash = keccak256(bytes(registration.label));\n        IPriceOracle.Price memory price = _rentPrice(\n            registration.label,\n            labelhash,\n            registration.duration\n        );\n        uint256 totalPrice = price.base + price.premium;\n        if (msg.value < totalPrice) revert InsufficientValue();\n\n        if (!_available(registration.label, labelhash))\n            revert NameNotAvailable(registration.label);\n\n        bytes32 commitment = makeCommitment(registration);\n        uint256 commitmentTimestamp = commitments[commitment];\n\n        // Require an old enough commitment.\n        if (commitmentTimestamp + minCommitmentAge > block.timestamp)\n            revert CommitmentTooNew(\n                commitment,\n                commitmentTimestamp + minCommitmentAge,\n                block.timestamp\n            );\n\n        // If the commitment is too old, or the name is registered, stop\n        if (commitmentTimestamp + maxCommitmentAge <= block.timestamp) {\n            if (commitmentTimestamp == 0) revert CommitmentNotFound(commitment);\n            revert CommitmentTooOld(\n                commitment,\n                commitmentTimestamp + maxCommitmentAge,\n                block.timestamp\n            );\n        }\n\n        delete (commitments[commitment]);\n\n        uint256 expires;\n\n        if (registration.resolver == address(0)) {\n            expires = base.register(\n                uint256(labelhash),\n                registration.owner,\n                registration.duration\n            );\n        } else {\n            expires = base.register(\n                uint256(labelhash),\n                address(this),\n                registration.duration\n            );\n\n            bytes32 namehash = keccak256(abi.encodePacked(ETH_NODE, labelhash));\n            ens.setRecord(\n                namehash,\n                registration.owner,\n                registration.resolver,\n                0\n            );\n            if (registration.data.length > 0)\n                Resolver(registration.resolver).multicallWithNodeCheck(\n                    namehash,\n                    registration.data\n                );\n\n            base.transferFrom(\n                address(this),\n                registration.owner,\n                uint256(labelhash)\n            );\n\n            if (registration.reverseRecord & REVERSE_RECORD_ETHEREUM_BIT != 0)\n                reverseRegistrar.setNameForAddr(\n                    msg.sender,\n                    msg.sender,\n                    registration.resolver,\n                    string.concat(registration.label, \".eth\")\n                );\n            if (registration.reverseRecord & REVERSE_RECORD_DEFAULT_BIT != 0)\n                defaultReverseRegistrar.setNameForAddr(\n                    msg.sender,\n                    string.concat(registration.label, \".eth\")\n                );\n        }\n\n        emit NameRegistered(\n            registration.label,\n            labelhash,\n            registration.owner,\n            price.base,\n            price.premium,\n            expires,\n            registration.referrer\n        );\n\n        if (msg.value > totalPrice)\n            payable(msg.sender).transfer(msg.value - totalPrice);\n    }\n\n    /// @notice Renews a name.\n    ///\n    /// @param label The label of the name.\n    /// @param duration The duration of the registration.\n    /// @param referrer The referrer of the registration.\n    function renew(\n        string calldata label,\n        uint256 duration,\n        bytes32 referrer\n    ) external payable override {\n        bytes32 labelhash = keccak256(bytes(label));\n\n        IPriceOracle.Price memory price = _rentPrice(\n            label,\n            labelhash,\n            duration\n        );\n        if (msg.value < price.base) revert InsufficientValue();\n\n        uint256 expires = base.renew(uint256(labelhash), duration);\n\n        emit NameRenewed(label, labelhash, price.base, expires, referrer);\n\n        if (msg.value > price.base)\n            payable(msg.sender).transfer(msg.value - price.base);\n    }\n\n    /// @notice Withdraws the balance of the contract to the owner.\n    function withdraw() public {\n        payable(owner()).transfer(address(this).balance);\n    }\n\n    /// @inheritdoc IERC165\n    function supportsInterface(\n        bytes4 interfaceID\n    ) public view override returns (bool) {\n        return\n            interfaceID == type(IETHRegistrarController).interfaceId ||\n            super.supportsInterface(interfaceID);\n    }\n\n    /* Internal functions */\n\n    function _rentPrice(\n        string calldata label,\n        bytes32 labelhash,\n        uint256 duration\n    ) internal view returns (IPriceOracle.Price memory price) {\n        price = prices.price(\n            label,\n            base.nameExpires(uint256(labelhash)),\n            duration\n        );\n    }\n\n    function _available(\n        string calldata label,\n        bytes32 labelhash\n    ) internal view returns (bool) {\n        return valid(label) && base.available(uint256(labelhash));\n    }\n}\n"
    },
    "contracts/ethregistrar/IBaseRegistrar.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity ^0.8.4;\n\nimport \"../registry/ENS.sol\";\nimport \"@openzeppelin/contracts/token/ERC721/IERC721.sol\";\n\ninterface IBaseRegistrar is IERC721 {\n    event ControllerAdded(address indexed controller);\n    event ControllerRemoved(address indexed controller);\n    event NameMigrated(\n        uint256 indexed id,\n        address indexed owner,\n        uint256 expires\n    );\n    event NameRegistered(\n        uint256 indexed id,\n        address indexed owner,\n        uint256 expires\n    );\n    event NameRenewed(uint256 indexed id, uint256 expires);\n\n    // Authorises a controller, who can register and renew domains.\n    function addController(address controller) external;\n\n    // Revoke controller permission for an address.\n    function removeController(address controller) external;\n\n    // Set the resolver for the TLD this registrar manages.\n    function setResolver(address resolver) external;\n\n    // Returns the expiration timestamp of the specified label hash.\n    function nameExpires(uint256 id) external view returns (uint256);\n\n    // Returns true if the specified name is available for registration.\n    function available(uint256 id) external view returns (bool);\n\n    /// @dev Register a name.\n    function register(\n        uint256 id,\n        address owner,\n        uint256 duration\n    ) external returns (uint256);\n\n    function renew(uint256 id, uint256 duration) external returns (uint256);\n\n    /// @dev Reclaim ownership of a name in ENS, if you own it in the registrar.\n    function reclaim(uint256 id, address owner) external;\n}\n"
    },
    "contracts/ethregistrar/IBulkRenewal.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity ^0.8.4;\n\ninterface IBulkRenewal {\n    function rentPrice(\n        string[] calldata names,\n        uint256 duration\n    ) external view returns (uint256 total);\n\n    function renewAll(\n        string[] calldata names,\n        uint256 duration,\n        bytes32 referrer\n    ) external payable;\n}\n"
    },
    "contracts/ethregistrar/IETHRegistrarController.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity ~0.8.17;\n\nimport \"./IPriceOracle.sol\";\n\ninterface IETHRegistrarController {\n    struct Registration {\n        string label;\n        address owner;\n        uint256 duration;\n        bytes32 secret;\n        address resolver;\n        bytes[] data;\n        uint8 reverseRecord;\n        bytes32 referrer;\n    }\n\n    function rentPrice(\n        string memory label,\n        uint256 duration\n    ) external view returns (IPriceOracle.Price memory);\n\n    function available(string memory label) external returns (bool);\n\n    function makeCommitment(\n        Registration memory registration\n    ) external pure returns (bytes32 commitment);\n\n    function commit(bytes32 commitment) external;\n\n    function register(Registration memory registration) external payable;\n\n    function renew(\n        string calldata label,\n        uint256 duration,\n        bytes32 referrer\n    ) external payable;\n}\n"
    },
    "contracts/ethregistrar/IPriceOracle.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity >=0.8.17 <0.9.0;\n\ninterface IPriceOracle {\n    struct Price {\n        uint256 base;\n        uint256 premium;\n    }\n\n    /// @dev Returns the price to register or renew a name.\n    /// @param name The name being registered or renewed.\n    /// @param expires When the name presently expires (0 if this is a new registration).\n    /// @param duration How long the name is being registered or extended for, in seconds.\n    /// @return base premium tuple of base price + premium price\n    function price(\n        string calldata name,\n        uint256 expires,\n        uint256 duration\n    ) external view returns (Price calldata);\n}\n"
    },
    "contracts/ethregistrar/StaticBulkRenewal.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity ~0.8.17;\n\nimport \"./ETHRegistrarController.sol\";\nimport \"./IBulkRenewal.sol\";\nimport \"./IPriceOracle.sol\";\n\nimport \"@openzeppelin/contracts/utils/introspection/IERC165.sol\";\n\ncontract StaticBulkRenewal is IBulkRenewal {\n    ETHRegistrarController controller;\n\n    constructor(ETHRegistrarController _controller) {\n        controller = _controller;\n    }\n\n    function rentPrice(\n        string[] calldata names,\n        uint256 duration\n    ) external view override returns (uint256 total) {\n        uint256 length = names.length;\n        for (uint256 i = 0; i < length; ) {\n            IPriceOracle.Price memory price = controller.rentPrice(\n                names[i],\n                duration\n            );\n            unchecked {\n                ++i;\n                total += (price.base + price.premium);\n            }\n        }\n    }\n\n    function renewAll(\n        string[] calldata names,\n        uint256 duration,\n        bytes32 referrer\n    ) external payable override {\n        uint256 length = names.length;\n        uint256 total;\n        for (uint256 i = 0; i < length; ) {\n            IPriceOracle.Price memory price = controller.rentPrice(\n                names[i],\n                duration\n            );\n            uint256 totalPrice = price.base + price.premium;\n            controller.renew{value: totalPrice}(names[i], duration, referrer);\n            unchecked {\n                ++i;\n                total += totalPrice;\n            }\n        }\n        // Send any excess funds back\n        payable(msg.sender).transfer(address(this).balance);\n    }\n\n    function supportsInterface(\n        bytes4 interfaceID\n    ) external pure returns (bool) {\n        return\n            interfaceID == type(IERC165).interfaceId ||\n            interfaceID == type(IBulkRenewal).interfaceId;\n    }\n}\n"
    },
    "contracts/registry/ENS.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface ENS {\n    // Logged when the owner of a node assigns a new owner to a subnode.\n    event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);\n\n    // Logged when the owner of a node transfers ownership to a new account.\n    event Transfer(bytes32 indexed node, address owner);\n\n    // Logged when the resolver for a node changes.\n    event NewResolver(bytes32 indexed node, address resolver);\n\n    // Logged when the TTL of a node changes\n    event NewTTL(bytes32 indexed node, uint64 ttl);\n\n    // Logged when an operator is added or removed.\n    event ApprovalForAll(\n        address indexed owner,\n        address indexed operator,\n        bool approved\n    );\n\n    function setRecord(\n        bytes32 node,\n        address owner,\n        address resolver,\n        uint64 ttl\n    ) external;\n\n    function setSubnodeRecord(\n        bytes32 node,\n        bytes32 label,\n        address owner,\n        address resolver,\n        uint64 ttl\n    ) external;\n\n    function setSubnodeOwner(\n        bytes32 node,\n        bytes32 label,\n        address owner\n    ) external returns (bytes32);\n\n    function setResolver(bytes32 node, address resolver) external;\n\n    function setOwner(bytes32 node, address owner) external;\n\n    function setTTL(bytes32 node, uint64 ttl) external;\n\n    function setApprovalForAll(address operator, bool approved) external;\n\n    function owner(bytes32 node) external view returns (address);\n\n    function resolver(bytes32 node) external view returns (address);\n\n    function ttl(bytes32 node) external view returns (uint64);\n\n    function recordExists(bytes32 node) external view returns (bool);\n\n    function isApprovedForAll(\n        address owner,\n        address operator\n    ) external view returns (bool);\n}\n"
    },
    "contracts/resolvers/profiles/IABIResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface IABIResolver {\n    event ABIChanged(bytes32 indexed node, uint256 indexed contentType);\n\n    /// Returns the ABI associated with an ENS node.\n    /// Defined in EIP205.\n    /// @param node The ENS node to query\n    /// @param contentTypes A bitwise OR of the ABI formats accepted by the caller.\n    /// @return contentType The content type of the return value\n    /// @return data The ABI data\n    function ABI(\n        bytes32 node,\n        uint256 contentTypes\n    ) external view returns (uint256, bytes memory);\n}\n"
    },
    "contracts/resolvers/profiles/IAddressResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\n/// Interface for the new (multicoin) addr function.\ninterface IAddressResolver {\n    event AddressChanged(\n        bytes32 indexed node,\n        uint256 coinType,\n        bytes newAddress\n    );\n\n    function addr(\n        bytes32 node,\n        uint256 coinType\n    ) external view returns (bytes memory);\n}\n"
    },
    "contracts/resolvers/profiles/IAddrResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\n/// Interface for the legacy (ETH-only) addr function.\ninterface IAddrResolver {\n    event AddrChanged(bytes32 indexed node, address a);\n\n    /// Returns the address associated with an ENS node.\n    /// @param node The ENS node to query.\n    /// @return The associated address.\n    function addr(bytes32 node) external view returns (address payable);\n}\n"
    },
    "contracts/resolvers/profiles/IContentHashResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface IContentHashResolver {\n    event ContenthashChanged(bytes32 indexed node, bytes hash);\n\n    /// Returns the contenthash associated with an ENS node.\n    /// @param node The ENS node to query.\n    /// @return The associated contenthash.\n    function contenthash(bytes32 node) external view returns (bytes memory);\n}\n"
    },
    "contracts/resolvers/profiles/IDNSRecordResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface IDNSRecordResolver {\n    // DNSRecordChanged is emitted whenever a given node/name/resource's RRSET is updated.\n    event DNSRecordChanged(\n        bytes32 indexed node,\n        bytes name,\n        uint16 resource,\n        bytes record\n    );\n    // DNSRecordDeleted is emitted whenever a given node/name/resource's RRSET is deleted.\n    event DNSRecordDeleted(bytes32 indexed node, bytes name, uint16 resource);\n\n    /// Obtain a DNS record.\n    /// @param node the namehash of the node for which to fetch the record\n    /// @param name the keccak-256 hash of the fully-qualified name for which to fetch the record\n    /// @param resource the ID of the resource as per https://en.wikipedia.org/wiki/List_of_DNS_record_types\n    /// @return the DNS record in wire format if present, otherwise empty\n    function dnsRecord(\n        bytes32 node,\n        bytes32 name,\n        uint16 resource\n    ) external view returns (bytes memory);\n}\n"
    },
    "contracts/resolvers/profiles/IDNSZoneResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface IDNSZoneResolver {\n    // DNSZonehashChanged is emitted whenever a given node's zone hash is updated.\n    event DNSZonehashChanged(\n        bytes32 indexed node,\n        bytes lastzonehash,\n        bytes zonehash\n    );\n\n    /// zonehash obtains the hash for the zone.\n    /// @param node The ENS node to query.\n    /// @return The associated contenthash.\n    function zonehash(bytes32 node) external view returns (bytes memory);\n}\n"
    },
    "contracts/resolvers/profiles/IExtendedResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.4;\n\ninterface IExtendedResolver {\n    function resolve(\n        bytes memory name,\n        bytes memory data\n    ) external view returns (bytes memory);\n}\n"
    },
    "contracts/resolvers/profiles/IInterfaceResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface IInterfaceResolver {\n    event InterfaceChanged(\n        bytes32 indexed node,\n        bytes4 indexed interfaceID,\n        address implementer\n    );\n\n    /// Returns the address of a contract that implements the specified interface for this name.\n    /// If an implementer has not been set for this interfaceID and name, the resolver will query\n    /// the contract at `addr()`. If `addr()` is set, a contract exists at that address, and that\n    /// contract implements EIP165 and returns `true` for the specified interfaceID, its address\n    /// will be returned.\n    /// @param node The ENS node to query.\n    /// @param interfaceID The EIP 165 interface ID to check for.\n    /// @return The address that implements this interface, or 0 if the interface is unsupported.\n    function interfaceImplementer(\n        bytes32 node,\n        bytes4 interfaceID\n    ) external view returns (address);\n}\n"
    },
    "contracts/resolvers/profiles/INameResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface INameResolver {\n    event NameChanged(bytes32 indexed node, string name);\n\n    /// Returns the name associated with an ENS node, for reverse records.\n    /// Defined in EIP181.\n    /// @param node The ENS node to query.\n    /// @return The associated name.\n    function name(bytes32 node) external view returns (string memory);\n}\n"
    },
    "contracts/resolvers/profiles/IPubkeyResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface IPubkeyResolver {\n    event PubkeyChanged(bytes32 indexed node, bytes32 x, bytes32 y);\n\n    /// Returns the SECP256k1 public key associated with an ENS node.\n    /// Defined in EIP 619.\n    /// @param node The ENS node to query\n    /// @return x The X coordinate of the curve point for the public key.\n    /// @return y The Y coordinate of the curve point for the public key.\n    function pubkey(bytes32 node) external view returns (bytes32 x, bytes32 y);\n}\n"
    },
    "contracts/resolvers/profiles/ITextResolver.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\ninterface ITextResolver {\n    event TextChanged(\n        bytes32 indexed node,\n        string indexed indexedKey,\n        string key,\n        string value\n    );\n\n    /// Returns the text data associated with an ENS node and key.\n    /// @param node The ENS node to query.\n    /// @param key The text data key to query.\n    /// @return The associated text data.\n    function text(\n        bytes32 node,\n        string calldata key\n    ) external view returns (string memory);\n}\n"
    },
    "contracts/resolvers/Resolver.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\nimport \"@openzeppelin/contracts/utils/introspection/IERC165.sol\";\nimport \"./profiles/IABIResolver.sol\";\nimport \"./profiles/IAddressResolver.sol\";\nimport \"./profiles/IAddrResolver.sol\";\nimport \"./profiles/IContentHashResolver.sol\";\nimport \"./profiles/IDNSRecordResolver.sol\";\nimport \"./profiles/IDNSZoneResolver.sol\";\nimport \"./profiles/IInterfaceResolver.sol\";\nimport \"./profiles/INameResolver.sol\";\nimport \"./profiles/IPubkeyResolver.sol\";\nimport \"./profiles/ITextResolver.sol\";\nimport \"./profiles/IExtendedResolver.sol\";\n\n/// A generic resolver interface which includes all the functions including the ones deprecated\ninterface Resolver is\n    IERC165,\n    IABIResolver,\n    IAddressResolver,\n    IAddrResolver,\n    IContentHashResolver,\n    IDNSRecordResolver,\n    IDNSZoneResolver,\n    IInterfaceResolver,\n    INameResolver,\n    IPubkeyResolver,\n    ITextResolver,\n    IExtendedResolver\n{\n    /* Deprecated events */\n    event ContentChanged(bytes32 indexed node, bytes32 hash);\n\n    function setApprovalForAll(address, bool) external;\n\n    function approve(bytes32 node, address delegate, bool approved) external;\n\n    function isApprovedForAll(address account, address operator) external;\n\n    function isApprovedFor(\n        address owner,\n        bytes32 node,\n        address delegate\n    ) external;\n\n    function setABI(\n        bytes32 node,\n        uint256 contentType,\n        bytes calldata data\n    ) external;\n\n    function setAddr(bytes32 node, address addr) external;\n\n    function setAddr(bytes32 node, uint256 coinType, bytes calldata a) external;\n\n    function setContenthash(bytes32 node, bytes calldata hash) external;\n\n    function setDnsrr(bytes32 node, bytes calldata data) external;\n\n    function setName(bytes32 node, string calldata _name) external;\n\n    function setPubkey(bytes32 node, bytes32 x, bytes32 y) external;\n\n    function setText(\n        bytes32 node,\n        string calldata key,\n        string calldata value\n    ) external;\n\n    function setInterface(\n        bytes32 node,\n        bytes4 interfaceID,\n        address implementer\n    ) external;\n\n    function multicall(\n        bytes[] calldata data\n    ) external returns (bytes[] memory results);\n\n    function multicallWithNodeCheck(\n        bytes32 nodehash,\n        bytes[] calldata data\n    ) external returns (bytes[] memory results);\n\n    /* Deprecated functions */\n    function content(bytes32 node) external view returns (bytes32);\n\n    function multihash(bytes32 node) external view returns (bytes memory);\n\n    function setContent(bytes32 node, bytes32 hash) external;\n\n    function setMultihash(bytes32 node, bytes calldata hash) external;\n}\n"
    },
    "contracts/reverseRegistrar/IDefaultReverseRegistrar.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.4;\n\n/// @notice Interface for the Default Reverse Registrar.\ninterface IDefaultReverseRegistrar {\n    /// @notice Sets the `nameForAddr()` record for the calling account.\n    ///\n    /// @param name The name to set.\n    function setName(string memory name) external;\n\n    /// @notice Sets the `nameForAddr()` record for the addr provided account using a signature.\n    ///\n    /// @param addr The address to set the name for.\n    /// @param name The name to set.\n    /// @param signatureExpiry Date when the signature expires.\n    /// @param signature The signature from the addr.\n    function setNameForAddrWithSignature(\n        address addr,\n        uint256 signatureExpiry,\n        string memory name,\n        bytes memory signature\n    ) external;\n\n    function setNameForAddr(address addr, string memory name) external;\n}\n"
    },
    "contracts/reverseRegistrar/IReverseRegistrar.sol": {
      "content": "pragma solidity >=0.8.4;\n\ninterface IReverseRegistrar {\n    function setDefaultResolver(address resolver) external;\n\n    function claim(address owner) external returns (bytes32);\n\n    function claimForAddr(\n        address addr,\n        address owner,\n        address resolver\n    ) external returns (bytes32);\n\n    function claimWithResolver(\n        address owner,\n        address resolver\n    ) external returns (bytes32);\n\n    function setName(string memory name) external returns (bytes32);\n\n    function setNameForAddr(\n        address addr,\n        address owner,\n        address resolver,\n        string memory name\n    ) external returns (bytes32);\n\n    function node(address addr) external pure returns (bytes32);\n}\n"
    },
    "contracts/utils/ERC20Recoverable.sol": {
      "content": "//SPDX-License-Identifier: MIT\npragma solidity >=0.8.17 <0.9.0;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\n\n/// @notice Contract is used to recover ERC20 tokens sent to the contract by mistake.\n\ncontract ERC20Recoverable is Ownable {\n    /// @notice Recover ERC20 tokens sent to the contract by mistake.\n    /// @dev The contract is Ownable and only the owner can call the recover function.\n    /// @param _to The address to send the tokens to.\n    /// @param _token The address of the ERC20 token to recover\n    /// @param _amount The amount of tokens to recover.\n    function recoverFunds(\n        address _token,\n        address _to,\n        uint256 _amount\n    ) external onlyOwner {\n        IERC20(_token).transfer(_to, _amount);\n    }\n}\n"
    },
    "contracts/utils/StringUtils.sol": {
      "content": "pragma solidity >=0.8.4;\n\nlibrary StringUtils {\n    /// @dev Returns the length of a given string\n    /// @param s The string to measure the length of\n    /// @return The length of the input string\n    function strlen(string memory s) internal pure returns (uint256) {\n        uint256 len;\n        uint256 i = 0;\n        uint256 bytelength = bytes(s).length;\n        for (len = 0; i < bytelength; len++) {\n            bytes1 b = bytes(s)[i];\n            if (b < 0x80) {\n                i += 1;\n            } else if (b < 0xE0) {\n                i += 2;\n            } else if (b < 0xF0) {\n                i += 3;\n            } else if (b < 0xF8) {\n                i += 4;\n            } else if (b < 0xFC) {\n                i += 5;\n            } else {\n                i += 6;\n            }\n        }\n        return len;\n    }\n\n    /// @dev Escapes special characters in a given string\n    /// @param str The string to escape\n    /// @return The escaped string\n    function escape(string memory str) internal pure returns (string memory) {\n        bytes memory strBytes = bytes(str);\n        uint extraChars = 0;\n\n        // count extra space needed for escaping\n        for (uint i = 0; i < strBytes.length; i++) {\n            if (_needsEscaping(strBytes[i])) {\n                extraChars++;\n            }\n        }\n\n        // allocate buffer with the exact size needed\n        bytes memory buffer = new bytes(strBytes.length + extraChars);\n        uint index = 0;\n\n        // escape characters\n        for (uint i = 0; i < strBytes.length; i++) {\n            if (_needsEscaping(strBytes[i])) {\n                buffer[index++] = \"\\\\\";\n                buffer[index++] = _getEscapedChar(strBytes[i]);\n            } else {\n                buffer[index++] = strBytes[i];\n            }\n        }\n\n        return string(buffer);\n    }\n\n    // determine if a character needs escaping\n    function _needsEscaping(bytes1 char) private pure returns (bool) {\n        return\n            char == '\"' ||\n            char == \"/\" ||\n            char == \"\\\\\" ||\n            char == \"\\n\" ||\n            char == \"\\r\" ||\n            char == \"\\t\";\n    }\n\n    // get the escaped character\n    function _getEscapedChar(bytes1 char) private pure returns (bytes1) {\n        if (char == \"\\n\") return \"n\";\n        if (char == \"\\r\") return \"r\";\n        if (char == \"\\t\") return \"t\";\n        return char;\n    }\n}\n"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 1000000
    },
    "metadata": {
      "useLiteralContent": true
    },
    "evmVersion": "paris",
    "outputSelection": {
      "*": {
        "*": [
          "abi",
          "evm.bytecode",
          "evm.deployedBytecode",
          "evm.methodIdentifiers",
          "metadata",
          "devdoc",
          "userdoc",
          "storageLayout",
          "evm.gasEstimates"
        ],
        "": [
          "ast"
        ]
      }
    }
  }
}