{ "address": "0x175FB4B866070Ab10F20057050Eb84491ff7Fd0c", "abi": [ { "inputs": [ { "internalType": "string", "name": "_name", "type": "string" }, { "internalType": "string", "name": "_symbol", "type": "string" }, { "internalType": "string", "name": "_baseURI", "type": "string" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "approved", "type": "address" }, { "indexed": true, "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "operator", "type": "address" }, { "indexed": false, "internalType": "bool", "name": "approved", "type": "bool" } ], "name": "ApprovalForAll", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "from", "type": "address" }, { "indexed": true, "internalType": "address", "name": "to", "type": "address" }, { "indexed": true, "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "inputs": [ { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "approve", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "baseURI", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "getApproved", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "_perpetualMarket", "type": "address" } ], "name": "init", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" }, { "internalType": "address", "name": "operator", "type": "address" } ], "name": "isApprovedForAll", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "_recipient", "type": "address" } ], "name": "mintNFT", "outputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "name": "name", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "nextId", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "ownerOf", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "perpetualMarket", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "safeTransferFrom", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" }, { "internalType": "bytes", "name": "_data", "type": "bytes" } ], "name": "safeTransferFrom", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "operator", "type": "address" }, { "internalType": "bool", "name": "approved", "type": "bool" } ], "name": "setApprovalForAll", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "symbol", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "index", "type": "uint256" } ], "name": "tokenByIndex", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" }, { "internalType": "uint256", "name": "index", "type": "uint256" } ], "name": "tokenOfOwnerByIndex", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "tokenURI", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "totalSupply", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "transferFrom", "outputs": [], "stateMutability": "nonpayable", "type": "function" } ], "transactionHash": "0x84121492271cbc4136ab8c3958254da7699c62b8cfe6867c2aa8645323c3b014", "receipt": { "to": null, "from": "0x4f071924D66BBC71A5254217893CC7D49938B1c4", "contractAddress": "0x175FB4B866070Ab10F20057050Eb84491ff7Fd0c", "transactionIndex": 0, "gasUsed": "29046204", "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", "blockHash": "0xc2092cde5209a2bd16255aaeffe63761e8003dfcc9b74de1e5fc73297d12bbb4", "transactionHash": "0x84121492271cbc4136ab8c3958254da7699c62b8cfe6867c2aa8645323c3b014", "logs": [], "blockNumber": 14570792, "cumulativeGasUsed": "12737824", "status": 1, "byzantium": true }, "args": [ "pVault v202", "PVAULT", "https://metadata.predy.finance/arbitrum/" ], "solcInputHash": "4053827aa146c622da7f45f0acacb57f", "metadata": "{\"compiler\":{\"version\":\"0.7.6+commit.7338295f\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"_name\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"_symbol\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"_baseURI\",\"type\":\"string\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"baseURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_perpetualMarket\",\"type\":\"address\"}],\"name\":\"init\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_recipient\",\"type\":\"address\"}],\"name\":\"mintNFT\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"nextId\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"perpetualMarket\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"_data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"tokenByIndex\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"tokenOfOwnerByIndex\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"baseURI()\":{\"details\":\"Returns the base URI set via {_setBaseURI}. This will be automatically added as a prefix in {tokenURI} to each token's URI, or to the token ID if no specific URI is set for that token ID.\"},\"constructor\":{\"params\":{\"_baseURI\":\"base URI\",\"_name\":\"token name for ERC721\",\"_symbol\":\"token symbol for ERC721\"}},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"init(address)\":{\"params\":{\"_perpetualMarket\":\"Perpetual Market address\"}},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"mintNFT(address)\":{\"details\":\"auto increment tokenId starts from 1\",\"params\":{\"_recipient\":\"recipient address for NFT\"}},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}. Time complexity O(1), guaranteed to always use less than 30 000 gas.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenByIndex(uint256)\":{\"details\":\"See {IERC721Enumerable-tokenByIndex}.\"},\"tokenOfOwnerByIndex(address,uint256)\":{\"details\":\"See {IERC721Enumerable-tokenOfOwnerByIndex}.\"},\"tokenURI(uint256)\":{\"details\":\"See {IERC721Metadata-tokenURI}.\"},\"totalSupply()\":{\"details\":\"See {IERC721Enumerable-totalSupply}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-transferFrom}.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{\"constructor\":{\"notice\":\"Vault NFT constructor\"},\"init(address)\":{\"notice\":\"Initializes Vault NFT\"},\"mintNFT(address)\":{\"notice\":\"mint new NFT\"}},\"notice\":\"ERC721 representing ownership of a vault\",\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/VaultNFT.sol\":\"VaultNFT\"},\"evmVersion\":\"istanbul\",\"libraries\":{\":__CACHE_BREAKER__\":\"0x0000000000000031363535313831393733373438\"},\"metadata\":{\"bytecodeHash\":\"ipfs\",\"useLiteralContent\":true},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/introspection/ERC165.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\nimport \\\"./IERC165.sol\\\";\\n\\n/**\\n * @dev Implementation of the {IERC165} interface.\\n *\\n * Contracts may inherit from this and call {_registerInterface} to declare\\n * their support of an interface.\\n */\\nabstract contract ERC165 is IERC165 {\\n /*\\n * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7\\n */\\n bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;\\n\\n /**\\n * @dev Mapping of interface ids to whether or not it's supported.\\n */\\n mapping(bytes4 => bool) private _supportedInterfaces;\\n\\n constructor () {\\n // Derived contracts need only register support for their own interfaces,\\n // we register support for ERC165 itself here\\n _registerInterface(_INTERFACE_ID_ERC165);\\n }\\n\\n /**\\n * @dev See {IERC165-supportsInterface}.\\n *\\n * Time complexity O(1), guaranteed to always use less than 30 000 gas.\\n */\\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\\n return _supportedInterfaces[interfaceId];\\n }\\n\\n /**\\n * @dev Registers the contract as an implementer of the interface defined by\\n * `interfaceId`. Support of the actual ERC165 interface is automatic and\\n * registering its interface id is not required.\\n *\\n * See {IERC165-supportsInterface}.\\n *\\n * Requirements:\\n *\\n * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).\\n */\\n function _registerInterface(bytes4 interfaceId) internal virtual {\\n require(interfaceId != 0xffffffff, \\\"ERC165: invalid interface id\\\");\\n _supportedInterfaces[interfaceId] = true;\\n }\\n}\\n\",\"keccak256\":\"0x234cdf2c3efd5f0dc17d32fe65d33c21674ca17de1e945eb60ac1076d7152d96\",\"license\":\"MIT\"},\"@openzeppelin/contracts/introspection/IERC165.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\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\",\"keccak256\":\"0xd2f30fad5b24c4120f96dbac83aacdb7993ee610a9092bc23c44463da292bf8d\",\"license\":\"MIT\"},\"@openzeppelin/contracts/math/SafeMath.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\n/**\\n * @dev Wrappers over Solidity's arithmetic operations with added overflow\\n * checks.\\n *\\n * Arithmetic operations in Solidity wrap on overflow. This can easily result\\n * in bugs, because programmers usually assume that an overflow raises an\\n * error, which is the standard behavior in high level programming languages.\\n * `SafeMath` restores this intuition by reverting the transaction when an\\n * operation overflows.\\n *\\n * Using this library instead of the unchecked operations eliminates an entire\\n * class of bugs, so it's recommended to use it always.\\n */\\nlibrary SafeMath {\\n /**\\n * @dev Returns the addition of two unsigned integers, with an overflow flag.\\n *\\n * _Available since v3.4._\\n */\\n function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {\\n uint256 c = a + b;\\n if (c < a) return (false, 0);\\n return (true, c);\\n }\\n\\n /**\\n * @dev Returns the substraction of two unsigned integers, with an overflow flag.\\n *\\n * _Available since v3.4._\\n */\\n function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {\\n if (b > a) return (false, 0);\\n return (true, a - b);\\n }\\n\\n /**\\n * @dev Returns the multiplication of two unsigned integers, with an overflow flag.\\n *\\n * _Available since v3.4._\\n */\\n function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {\\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\\n // benefit is lost if 'b' is also tested.\\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\\n if (a == 0) return (true, 0);\\n uint256 c = a * b;\\n if (c / a != b) return (false, 0);\\n return (true, c);\\n }\\n\\n /**\\n * @dev Returns the division of two unsigned integers, with a division by zero flag.\\n *\\n * _Available since v3.4._\\n */\\n function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {\\n if (b == 0) return (false, 0);\\n return (true, a / b);\\n }\\n\\n /**\\n * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.\\n *\\n * _Available since v3.4._\\n */\\n function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {\\n if (b == 0) return (false, 0);\\n return (true, a % b);\\n }\\n\\n /**\\n * @dev Returns the addition of two unsigned integers, reverting on\\n * overflow.\\n *\\n * Counterpart to Solidity's `+` operator.\\n *\\n * Requirements:\\n *\\n * - Addition cannot overflow.\\n */\\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\\n uint256 c = a + b;\\n require(c >= a, \\\"SafeMath: addition overflow\\\");\\n return c;\\n }\\n\\n /**\\n * @dev Returns the subtraction of two unsigned integers, reverting on\\n * overflow (when the result is negative).\\n *\\n * Counterpart to Solidity's `-` operator.\\n *\\n * Requirements:\\n *\\n * - Subtraction cannot overflow.\\n */\\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\\n require(b <= a, \\\"SafeMath: subtraction overflow\\\");\\n return a - b;\\n }\\n\\n /**\\n * @dev Returns the multiplication of two unsigned integers, reverting on\\n * overflow.\\n *\\n * Counterpart to Solidity's `*` operator.\\n *\\n * Requirements:\\n *\\n * - Multiplication cannot overflow.\\n */\\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\\n if (a == 0) return 0;\\n uint256 c = a * b;\\n require(c / a == b, \\\"SafeMath: multiplication overflow\\\");\\n return c;\\n }\\n\\n /**\\n * @dev Returns the integer division of two unsigned integers, reverting on\\n * division by zero. The result is rounded towards zero.\\n *\\n * Counterpart to Solidity's `/` operator. Note: this function uses a\\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\\n * uses an invalid opcode to revert (consuming all remaining gas).\\n *\\n * Requirements:\\n *\\n * - The divisor cannot be zero.\\n */\\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\\n require(b > 0, \\\"SafeMath: division by zero\\\");\\n return a / b;\\n }\\n\\n /**\\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\\n * reverting when dividing by zero.\\n *\\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\\n * opcode (which leaves remaining gas untouched) while Solidity uses an\\n * invalid opcode to revert (consuming all remaining gas).\\n *\\n * Requirements:\\n *\\n * - The divisor cannot be zero.\\n */\\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\\n require(b > 0, \\\"SafeMath: modulo by zero\\\");\\n return a % b;\\n }\\n\\n /**\\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\\n * overflow (when the result is negative).\\n *\\n * CAUTION: This function is deprecated because it requires allocating memory for the error\\n * message unnecessarily. For custom revert reasons use {trySub}.\\n *\\n * Counterpart to Solidity's `-` operator.\\n *\\n * Requirements:\\n *\\n * - Subtraction cannot overflow.\\n */\\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\\n require(b <= a, errorMessage);\\n return a - b;\\n }\\n\\n /**\\n * @dev Returns the integer division of two unsigned integers, reverting with custom message on\\n * division by zero. The result is rounded towards zero.\\n *\\n * CAUTION: This function is deprecated because it requires allocating memory for the error\\n * message unnecessarily. For custom revert reasons use {tryDiv}.\\n *\\n * Counterpart to Solidity's `/` operator. Note: this function uses a\\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\\n * uses an invalid opcode to revert (consuming all remaining gas).\\n *\\n * Requirements:\\n *\\n * - The divisor cannot be zero.\\n */\\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\\n require(b > 0, errorMessage);\\n return a / b;\\n }\\n\\n /**\\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\\n * reverting with custom message when dividing by zero.\\n *\\n * CAUTION: This function is deprecated because it requires allocating memory for the error\\n * message unnecessarily. For custom revert reasons use {tryMod}.\\n *\\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\\n * opcode (which leaves remaining gas untouched) while Solidity uses an\\n * invalid opcode to revert (consuming all remaining gas).\\n *\\n * Requirements:\\n *\\n * - The divisor cannot be zero.\\n */\\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\\n require(b > 0, errorMessage);\\n return a % b;\\n }\\n}\\n\",\"keccak256\":\"0xe22a1fc7400ae196eba2ad1562d0386462b00a6363b742d55a2fd2021a58586f\",\"license\":\"MIT\"},\"@openzeppelin/contracts/proxy/Initializable.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\n// solhint-disable-next-line compiler-version\\npragma solidity >=0.4.24 <0.8.0;\\n\\nimport \\\"../utils/Address.sol\\\";\\n\\n/**\\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\\n * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an\\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\\n *\\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\\n * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.\\n *\\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\\n */\\nabstract contract Initializable {\\n\\n /**\\n * @dev Indicates that the contract has been initialized.\\n */\\n bool private _initialized;\\n\\n /**\\n * @dev Indicates that the contract is in the process of being initialized.\\n */\\n bool private _initializing;\\n\\n /**\\n * @dev Modifier to protect an initializer function from being invoked twice.\\n */\\n modifier initializer() {\\n require(_initializing || _isConstructor() || !_initialized, \\\"Initializable: contract is already initialized\\\");\\n\\n bool isTopLevelCall = !_initializing;\\n if (isTopLevelCall) {\\n _initializing = true;\\n _initialized = true;\\n }\\n\\n _;\\n\\n if (isTopLevelCall) {\\n _initializing = false;\\n }\\n }\\n\\n /// @dev Returns true if and only if the function is running in the constructor\\n function _isConstructor() private view returns (bool) {\\n return !Address.isContract(address(this));\\n }\\n}\\n\",\"keccak256\":\"0x9abeffe138f098b16557187383ba0f9e8503602fa95cd668132986ee115237ed\",\"license\":\"MIT\"},\"@openzeppelin/contracts/token/ERC721/ERC721.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\nimport \\\"../../utils/Context.sol\\\";\\nimport \\\"./IERC721.sol\\\";\\nimport \\\"./IERC721Metadata.sol\\\";\\nimport \\\"./IERC721Enumerable.sol\\\";\\nimport \\\"./IERC721Receiver.sol\\\";\\nimport \\\"../../introspection/ERC165.sol\\\";\\nimport \\\"../../math/SafeMath.sol\\\";\\nimport \\\"../../utils/Address.sol\\\";\\nimport \\\"../../utils/EnumerableSet.sol\\\";\\nimport \\\"../../utils/EnumerableMap.sol\\\";\\nimport \\\"../../utils/Strings.sol\\\";\\n\\n/**\\n * @title ERC721 Non-Fungible Token Standard basic implementation\\n * @dev see https://eips.ethereum.org/EIPS/eip-721\\n */\\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {\\n using SafeMath for uint256;\\n using Address for address;\\n using EnumerableSet for EnumerableSet.UintSet;\\n using EnumerableMap for EnumerableMap.UintToAddressMap;\\n using Strings for uint256;\\n\\n // Equals to `bytes4(keccak256(\\\"onERC721Received(address,address,uint256,bytes)\\\"))`\\n // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`\\n bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;\\n\\n // Mapping from holder address to their (enumerable) set of owned tokens\\n mapping (address => EnumerableSet.UintSet) private _holderTokens;\\n\\n // Enumerable mapping from token ids to their owners\\n EnumerableMap.UintToAddressMap private _tokenOwners;\\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 // Token name\\n string private _name;\\n\\n // Token symbol\\n string private _symbol;\\n\\n // Optional mapping for token URIs\\n mapping (uint256 => string) private _tokenURIs;\\n\\n // Base URI\\n string private _baseURI;\\n\\n /*\\n * bytes4(keccak256('balanceOf(address)')) == 0x70a08231\\n * bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e\\n * bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3\\n * bytes4(keccak256('getApproved(uint256)')) == 0x081812fc\\n * bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465\\n * bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5\\n * bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd\\n * bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e\\n * bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde\\n *\\n * => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^\\n * 0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd\\n */\\n bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;\\n\\n /*\\n * bytes4(keccak256('name()')) == 0x06fdde03\\n * bytes4(keccak256('symbol()')) == 0x95d89b41\\n * bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd\\n *\\n * => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f\\n */\\n bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;\\n\\n /*\\n * bytes4(keccak256('totalSupply()')) == 0x18160ddd\\n * bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59\\n * bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7\\n *\\n * => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63\\n */\\n bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;\\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 // register the supported interfaces to conform to ERC721 via ERC165\\n _registerInterface(_INTERFACE_ID_ERC721);\\n _registerInterface(_INTERFACE_ID_ERC721_METADATA);\\n _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);\\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: balance query for the zero address\\\");\\n return _holderTokens[owner].length();\\n }\\n\\n /**\\n * @dev See {IERC721-ownerOf}.\\n */\\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\\n return _tokenOwners.get(tokenId, \\\"ERC721: owner query for nonexistent token\\\");\\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 require(_exists(tokenId), \\\"ERC721Metadata: URI query for nonexistent token\\\");\\n\\n string memory _tokenURI = _tokenURIs[tokenId];\\n string memory base = baseURI();\\n\\n // If there is no base URI, return the token URI.\\n if (bytes(base).length == 0) {\\n return _tokenURI;\\n }\\n // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).\\n if (bytes(_tokenURI).length > 0) {\\n return string(abi.encodePacked(base, _tokenURI));\\n }\\n // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.\\n return string(abi.encodePacked(base, tokenId.toString()));\\n }\\n\\n /**\\n * @dev Returns the base URI set via {_setBaseURI}. This will be\\n * automatically added as a prefix in {tokenURI} to each token's URI, or\\n * to the token ID if no specific URI is set for that token ID.\\n */\\n function baseURI() public view virtual returns (string memory) {\\n return _baseURI;\\n }\\n\\n /**\\n * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.\\n */\\n function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {\\n return _holderTokens[owner].at(index);\\n }\\n\\n /**\\n * @dev See {IERC721Enumerable-totalSupply}.\\n */\\n function totalSupply() public view virtual override returns (uint256) {\\n // _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds\\n return _tokenOwners.length();\\n }\\n\\n /**\\n * @dev See {IERC721Enumerable-tokenByIndex}.\\n */\\n function tokenByIndex(uint256 index) public view virtual override returns (uint256) {\\n (uint256 tokenId, ) = _tokenOwners.at(index);\\n return tokenId;\\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(_msgSender() == owner || ERC721.isApprovedForAll(owner, _msgSender()),\\n \\\"ERC721: approve caller is not owner nor 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 require(_exists(tokenId), \\\"ERC721: approved query for nonexistent token\\\");\\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 require(operator != _msgSender(), \\\"ERC721: approve to caller\\\");\\n\\n _operatorApprovals[_msgSender()][operator] = approved;\\n emit ApprovalForAll(_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: transfer caller is not owner nor 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: transfer caller is not owner nor 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 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 _tokenOwners.contains(tokenId);\\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 require(_exists(tokenId), \\\"ERC721: operator query for nonexistent token\\\");\\n address owner = ERC721.ownerOf(tokenId);\\n return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));\\n }\\n\\n /**\\n * @dev Safely mints `tokenId` and transfers it to `to`.\\n *\\n * Requirements:\\n d*\\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(_checkOnERC721Received(address(0), to, tokenId, _data), \\\"ERC721: transfer to non ERC721Receiver implementer\\\");\\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);\\n\\n _holderTokens[to].add(tokenId);\\n\\n _tokenOwners.set(tokenId, to);\\n\\n emit Transfer(address(0), to, tokenId);\\n }\\n\\n /**\\n * @dev Destroys `tokenId`.\\n * The approval is cleared when the token is burned.\\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); // internal owner\\n\\n _beforeTokenTransfer(owner, address(0), tokenId);\\n\\n // Clear approvals\\n _approve(address(0), tokenId);\\n\\n // Clear metadata (if any)\\n if (bytes(_tokenURIs[tokenId]).length != 0) {\\n delete _tokenURIs[tokenId];\\n }\\n\\n _holderTokens[owner].remove(tokenId);\\n\\n _tokenOwners.remove(tokenId);\\n\\n emit Transfer(owner, address(0), tokenId);\\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 of token that is not own\\\"); // internal owner\\n require(to != address(0), \\\"ERC721: transfer to the zero address\\\");\\n\\n _beforeTokenTransfer(from, to, tokenId);\\n\\n // Clear approvals from the previous owner\\n _approve(address(0), tokenId);\\n\\n _holderTokens[from].remove(tokenId);\\n _holderTokens[to].add(tokenId);\\n\\n _tokenOwners.set(tokenId, to);\\n\\n emit Transfer(from, to, tokenId);\\n }\\n\\n /**\\n * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.\\n *\\n * Requirements:\\n *\\n * - `tokenId` must exist.\\n */\\n function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {\\n require(_exists(tokenId), \\\"ERC721Metadata: URI set of nonexistent token\\\");\\n _tokenURIs[tokenId] = _tokenURI;\\n }\\n\\n /**\\n * @dev Internal function to set the base URI for all token IDs. It is\\n * automatically added as a prefix to the value returned in {tokenURI},\\n * or to the token ID if {tokenURI} is empty.\\n */\\n function _setBaseURI(string memory baseURI_) internal virtual {\\n _baseURI = baseURI_;\\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(address from, address to, uint256 tokenId, bytes memory _data)\\n private returns (bool)\\n {\\n if (!to.isContract()) {\\n return true;\\n }\\n bytes memory returndata = to.functionCall(abi.encodeWithSelector(\\n IERC721Receiver(to).onERC721Received.selector,\\n _msgSender(),\\n from,\\n tokenId,\\n _data\\n ), \\\"ERC721: transfer to non ERC721Receiver implementer\\\");\\n bytes4 retval = abi.decode(returndata, (bytes4));\\n return (retval == _ERC721_RECEIVED);\\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); // internal owner\\n }\\n\\n /**\\n * @dev Hook that is called before any token transfer. This includes minting\\n * and burning.\\n *\\n * Calling conditions:\\n *\\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\\n * transferred to `to`.\\n * - When `from` is zero, `tokenId` will be minted for `to`.\\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\\n * - `from` cannot be the zero address.\\n * - `to` cannot be the zero address.\\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 tokenId) internal virtual { }\\n}\\n\",\"keccak256\":\"0x93e4f65a89c3c888afbaa3ee18c3fa4f51c422419bbcd9cca47676a0f8e507ea\",\"license\":\"MIT\"},\"@openzeppelin/contracts/token/ERC721/IERC721.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\nimport \\\"../../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`, 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 be 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: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\\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 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 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 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 /**\\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\",\"keccak256\":\"0xb11597841d47f7a773bca63ca323c76f804cb5d944788de0327db5526319dc82\",\"license\":\"MIT\"},\"@openzeppelin/contracts/token/ERC721/IERC721Enumerable.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\nimport \\\"./IERC721.sol\\\";\\n\\n/**\\n * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension\\n * @dev See https://eips.ethereum.org/EIPS/eip-721\\n */\\ninterface IERC721Enumerable is IERC721 {\\n\\n /**\\n * @dev Returns the total amount of tokens stored by the contract.\\n */\\n function totalSupply() external view returns (uint256);\\n\\n /**\\n * @dev Returns a token ID owned by `owner` at a given `index` of its token list.\\n * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.\\n */\\n function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);\\n\\n /**\\n * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.\\n * Use along with {totalSupply} to enumerate all tokens.\\n */\\n function tokenByIndex(uint256 index) external view returns (uint256);\\n}\\n\",\"keccak256\":\"0x2789dfea2d73182683d637db5729201f6730dae6113030a94c828f8688f38f2f\",\"license\":\"MIT\"},\"@openzeppelin/contracts/token/ERC721/IERC721Metadata.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\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 /**\\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\",\"keccak256\":\"0xc82c7d1d732081d9bd23f1555ebdf8f3bc1738bc42c2bfc4b9aa7564d9fa3573\",\"license\":\"MIT\"},\"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\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 `IERC721.onERC721Received.selector`.\\n */\\n function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);\\n}\\n\",\"keccak256\":\"0x05604ffcf69e416b8a42728bb0e4fd75170d8fac70bf1a284afeb4752a9bc52f\",\"license\":\"MIT\"},\"@openzeppelin/contracts/utils/Address.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\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 */\\n function isContract(address account) internal view returns (bool) {\\n // This method relies on extcodesize, which returns 0 for contracts in\\n // construction, since the code is only stored at the end of the\\n // constructor execution.\\n\\n uint256 size;\\n // solhint-disable-next-line no-inline-assembly\\n assembly { size := extcodesize(account) }\\n return size > 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://diligence.consensys.net/posts/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/v0.5.11/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 // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\\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 functionCall(target, data, \\\"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(address target, bytes memory data, string memory errorMessage) 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(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\\n require(address(this).balance >= value, \\\"Address: insufficient balance for call\\\");\\n require(isContract(target), \\\"Address: call to non-contract\\\");\\n\\n // solhint-disable-next-line avoid-low-level-calls\\n (bool success, bytes memory returndata) = target.call{ value: value }(data);\\n return _verifyCallResult(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(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {\\n require(isContract(target), \\\"Address: static call to non-contract\\\");\\n\\n // solhint-disable-next-line avoid-low-level-calls\\n (bool success, bytes memory returndata) = target.staticcall(data);\\n return _verifyCallResult(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(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\\n require(isContract(target), \\\"Address: delegate call to non-contract\\\");\\n\\n // solhint-disable-next-line avoid-low-level-calls\\n (bool success, bytes memory returndata) = target.delegatecall(data);\\n return _verifyCallResult(success, returndata, errorMessage);\\n }\\n\\n function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {\\n if (success) {\\n return returndata;\\n } else {\\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\\n // solhint-disable-next-line no-inline-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}\\n\",\"keccak256\":\"0xf89f005a3d98f7768cdee2583707db0ac725cf567d455751af32ee68132f3db3\",\"license\":\"MIT\"},\"@openzeppelin/contracts/utils/Context.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity >=0.6.0 <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 GSN 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 payable) {\\n return msg.sender;\\n }\\n\\n function _msgData() internal view virtual returns (bytes memory) {\\n this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\\n return msg.data;\\n }\\n}\\n\",\"keccak256\":\"0x8d3cb350f04ff49cfb10aef08d87f19dcbaecc8027b0bed12f3275cd12f38cf0\",\"license\":\"MIT\"},\"@openzeppelin/contracts/utils/EnumerableMap.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\n/**\\n * @dev Library for managing an enumerable variant of Solidity's\\n * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]\\n * type.\\n *\\n * Maps have the following properties:\\n *\\n * - Entries are added, removed, and checked for existence in constant time\\n * (O(1)).\\n * - Entries are enumerated in O(n). No guarantees are made on the ordering.\\n *\\n * ```\\n * contract Example {\\n * // Add the library methods\\n * using EnumerableMap for EnumerableMap.UintToAddressMap;\\n *\\n * // Declare a set state variable\\n * EnumerableMap.UintToAddressMap private myMap;\\n * }\\n * ```\\n *\\n * As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are\\n * supported.\\n */\\nlibrary EnumerableMap {\\n // To implement this library for multiple types with as little code\\n // repetition as possible, we write it in terms of a generic Map type with\\n // bytes32 keys and values.\\n // The Map implementation uses private functions, and user-facing\\n // implementations (such as Uint256ToAddressMap) are just wrappers around\\n // the underlying Map.\\n // This means that we can only create new EnumerableMaps for types that fit\\n // in bytes32.\\n\\n struct MapEntry {\\n bytes32 _key;\\n bytes32 _value;\\n }\\n\\n struct Map {\\n // Storage of map keys and values\\n MapEntry[] _entries;\\n\\n // Position of the entry defined by a key in the `entries` array, plus 1\\n // because index 0 means a key is not in the map.\\n mapping (bytes32 => uint256) _indexes;\\n }\\n\\n /**\\n * @dev Adds a key-value pair to a map, or updates the value for an existing\\n * key. O(1).\\n *\\n * Returns true if the key was added to the map, that is if it was not\\n * already present.\\n */\\n function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {\\n // We read and store the key's index to prevent multiple reads from the same storage slot\\n uint256 keyIndex = map._indexes[key];\\n\\n if (keyIndex == 0) { // Equivalent to !contains(map, key)\\n map._entries.push(MapEntry({ _key: key, _value: value }));\\n // The entry is stored at length-1, but we add 1 to all indexes\\n // and use 0 as a sentinel value\\n map._indexes[key] = map._entries.length;\\n return true;\\n } else {\\n map._entries[keyIndex - 1]._value = value;\\n return false;\\n }\\n }\\n\\n /**\\n * @dev Removes a key-value pair from a map. O(1).\\n *\\n * Returns true if the key was removed from the map, that is if it was present.\\n */\\n function _remove(Map storage map, bytes32 key) private returns (bool) {\\n // We read and store the key's index to prevent multiple reads from the same storage slot\\n uint256 keyIndex = map._indexes[key];\\n\\n if (keyIndex != 0) { // Equivalent to contains(map, key)\\n // To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one\\n // in the array, and then remove the last entry (sometimes called as 'swap and pop').\\n // This modifies the order of the array, as noted in {at}.\\n\\n uint256 toDeleteIndex = keyIndex - 1;\\n uint256 lastIndex = map._entries.length - 1;\\n\\n // When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs\\n // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.\\n\\n MapEntry storage lastEntry = map._entries[lastIndex];\\n\\n // Move the last entry to the index where the entry to delete is\\n map._entries[toDeleteIndex] = lastEntry;\\n // Update the index for the moved entry\\n map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based\\n\\n // Delete the slot where the moved entry was stored\\n map._entries.pop();\\n\\n // Delete the index for the deleted slot\\n delete map._indexes[key];\\n\\n return true;\\n } else {\\n return false;\\n }\\n }\\n\\n /**\\n * @dev Returns true if the key is in the map. O(1).\\n */\\n function _contains(Map storage map, bytes32 key) private view returns (bool) {\\n return map._indexes[key] != 0;\\n }\\n\\n /**\\n * @dev Returns the number of key-value pairs in the map. O(1).\\n */\\n function _length(Map storage map) private view returns (uint256) {\\n return map._entries.length;\\n }\\n\\n /**\\n * @dev Returns the key-value pair stored at position `index` in the map. O(1).\\n *\\n * Note that there are no guarantees on the ordering of entries inside the\\n * array, and it may change when more entries are added or removed.\\n *\\n * Requirements:\\n *\\n * - `index` must be strictly less than {length}.\\n */\\n function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {\\n require(map._entries.length > index, \\\"EnumerableMap: index out of bounds\\\");\\n\\n MapEntry storage entry = map._entries[index];\\n return (entry._key, entry._value);\\n }\\n\\n /**\\n * @dev Tries to returns the value associated with `key`. O(1).\\n * Does not revert if `key` is not in the map.\\n */\\n function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {\\n uint256 keyIndex = map._indexes[key];\\n if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)\\n return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based\\n }\\n\\n /**\\n * @dev Returns the value associated with `key`. O(1).\\n *\\n * Requirements:\\n *\\n * - `key` must be in the map.\\n */\\n function _get(Map storage map, bytes32 key) private view returns (bytes32) {\\n uint256 keyIndex = map._indexes[key];\\n require(keyIndex != 0, \\\"EnumerableMap: nonexistent key\\\"); // Equivalent to contains(map, key)\\n return map._entries[keyIndex - 1]._value; // All indexes are 1-based\\n }\\n\\n /**\\n * @dev Same as {_get}, with a custom error message when `key` is not in the map.\\n *\\n * CAUTION: This function is deprecated because it requires allocating memory for the error\\n * message unnecessarily. For custom revert reasons use {_tryGet}.\\n */\\n function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {\\n uint256 keyIndex = map._indexes[key];\\n require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)\\n return map._entries[keyIndex - 1]._value; // All indexes are 1-based\\n }\\n\\n // UintToAddressMap\\n\\n struct UintToAddressMap {\\n Map _inner;\\n }\\n\\n /**\\n * @dev Adds a key-value pair to a map, or updates the value for an existing\\n * key. O(1).\\n *\\n * Returns true if the key was added to the map, that is if it was not\\n * already present.\\n */\\n function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {\\n return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));\\n }\\n\\n /**\\n * @dev Removes a value from a set. O(1).\\n *\\n * Returns true if the key was removed from the map, that is if it was present.\\n */\\n function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {\\n return _remove(map._inner, bytes32(key));\\n }\\n\\n /**\\n * @dev Returns true if the key is in the map. O(1).\\n */\\n function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {\\n return _contains(map._inner, bytes32(key));\\n }\\n\\n /**\\n * @dev Returns the number of elements in the map. O(1).\\n */\\n function length(UintToAddressMap storage map) internal view returns (uint256) {\\n return _length(map._inner);\\n }\\n\\n /**\\n * @dev Returns the element stored at position `index` in the set. O(1).\\n * Note that there are no guarantees on the ordering of values inside the\\n * array, and it may change when more values are added or removed.\\n *\\n * Requirements:\\n *\\n * - `index` must be strictly less than {length}.\\n */\\n function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {\\n (bytes32 key, bytes32 value) = _at(map._inner, index);\\n return (uint256(key), address(uint160(uint256(value))));\\n }\\n\\n /**\\n * @dev Tries to returns the value associated with `key`. O(1).\\n * Does not revert if `key` is not in the map.\\n *\\n * _Available since v3.4._\\n */\\n function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {\\n (bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));\\n return (success, address(uint160(uint256(value))));\\n }\\n\\n /**\\n * @dev Returns the value associated with `key`. O(1).\\n *\\n * Requirements:\\n *\\n * - `key` must be in the map.\\n */\\n function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {\\n return address(uint160(uint256(_get(map._inner, bytes32(key)))));\\n }\\n\\n /**\\n * @dev Same as {get}, with a custom error message when `key` is not in the map.\\n *\\n * CAUTION: This function is deprecated because it requires allocating memory for the error\\n * message unnecessarily. For custom revert reasons use {tryGet}.\\n */\\n function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {\\n return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));\\n }\\n}\\n\",\"keccak256\":\"0x2114555153edb5f273008b3d34205f511db9af06b88f752e4c280dd612c4c549\",\"license\":\"MIT\"},\"@openzeppelin/contracts/utils/EnumerableSet.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\n/**\\n * @dev Library for managing\\n * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive\\n * types.\\n *\\n * Sets have the following properties:\\n *\\n * - Elements are added, removed, and checked for existence in constant time\\n * (O(1)).\\n * - Elements are enumerated in O(n). No guarantees are made on the ordering.\\n *\\n * ```\\n * contract Example {\\n * // Add the library methods\\n * using EnumerableSet for EnumerableSet.AddressSet;\\n *\\n * // Declare a set state variable\\n * EnumerableSet.AddressSet private mySet;\\n * }\\n * ```\\n *\\n * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)\\n * and `uint256` (`UintSet`) are supported.\\n */\\nlibrary EnumerableSet {\\n // To implement this library for multiple types with as little code\\n // repetition as possible, we write it in terms of a generic Set type with\\n // bytes32 values.\\n // The Set implementation uses private functions, and user-facing\\n // implementations (such as AddressSet) are just wrappers around the\\n // underlying Set.\\n // This means that we can only create new EnumerableSets for types that fit\\n // in bytes32.\\n\\n struct Set {\\n // Storage of set values\\n bytes32[] _values;\\n\\n // Position of the value in the `values` array, plus 1 because index 0\\n // means a value is not in the set.\\n mapping (bytes32 => uint256) _indexes;\\n }\\n\\n /**\\n * @dev Add a value to a set. O(1).\\n *\\n * Returns true if the value was added to the set, that is if it was not\\n * already present.\\n */\\n function _add(Set storage set, bytes32 value) private returns (bool) {\\n if (!_contains(set, value)) {\\n set._values.push(value);\\n // The value is stored at length-1, but we add 1 to all indexes\\n // and use 0 as a sentinel value\\n set._indexes[value] = set._values.length;\\n return true;\\n } else {\\n return false;\\n }\\n }\\n\\n /**\\n * @dev Removes a value from a set. O(1).\\n *\\n * Returns true if the value was removed from the set, that is if it was\\n * present.\\n */\\n function _remove(Set storage set, bytes32 value) private returns (bool) {\\n // We read and store the value's index to prevent multiple reads from the same storage slot\\n uint256 valueIndex = set._indexes[value];\\n\\n if (valueIndex != 0) { // Equivalent to contains(set, value)\\n // To delete an element from the _values array in O(1), we swap the element to delete with the last one in\\n // the array, and then remove the last element (sometimes called as 'swap and pop').\\n // This modifies the order of the array, as noted in {at}.\\n\\n uint256 toDeleteIndex = valueIndex - 1;\\n uint256 lastIndex = set._values.length - 1;\\n\\n // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs\\n // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.\\n\\n bytes32 lastvalue = set._values[lastIndex];\\n\\n // Move the last value to the index where the value to delete is\\n set._values[toDeleteIndex] = lastvalue;\\n // Update the index for the moved value\\n set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based\\n\\n // Delete the slot where the moved value was stored\\n set._values.pop();\\n\\n // Delete the index for the deleted slot\\n delete set._indexes[value];\\n\\n return true;\\n } else {\\n return false;\\n }\\n }\\n\\n /**\\n * @dev Returns true if the value is in the set. O(1).\\n */\\n function _contains(Set storage set, bytes32 value) private view returns (bool) {\\n return set._indexes[value] != 0;\\n }\\n\\n /**\\n * @dev Returns the number of values on the set. O(1).\\n */\\n function _length(Set storage set) private view returns (uint256) {\\n return set._values.length;\\n }\\n\\n /**\\n * @dev Returns the value stored at position `index` in the set. O(1).\\n *\\n * Note that there are no guarantees on the ordering of values inside the\\n * array, and it may change when more values are added or removed.\\n *\\n * Requirements:\\n *\\n * - `index` must be strictly less than {length}.\\n */\\n function _at(Set storage set, uint256 index) private view returns (bytes32) {\\n require(set._values.length > index, \\\"EnumerableSet: index out of bounds\\\");\\n return set._values[index];\\n }\\n\\n // Bytes32Set\\n\\n struct Bytes32Set {\\n Set _inner;\\n }\\n\\n /**\\n * @dev Add a value to a set. O(1).\\n *\\n * Returns true if the value was added to the set, that is if it was not\\n * already present.\\n */\\n function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {\\n return _add(set._inner, value);\\n }\\n\\n /**\\n * @dev Removes a value from a set. O(1).\\n *\\n * Returns true if the value was removed from the set, that is if it was\\n * present.\\n */\\n function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {\\n return _remove(set._inner, value);\\n }\\n\\n /**\\n * @dev Returns true if the value is in the set. O(1).\\n */\\n function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {\\n return _contains(set._inner, value);\\n }\\n\\n /**\\n * @dev Returns the number of values in the set. O(1).\\n */\\n function length(Bytes32Set storage set) internal view returns (uint256) {\\n return _length(set._inner);\\n }\\n\\n /**\\n * @dev Returns the value stored at position `index` in the set. O(1).\\n *\\n * Note that there are no guarantees on the ordering of values inside the\\n * array, and it may change when more values are added or removed.\\n *\\n * Requirements:\\n *\\n * - `index` must be strictly less than {length}.\\n */\\n function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {\\n return _at(set._inner, index);\\n }\\n\\n // AddressSet\\n\\n struct AddressSet {\\n Set _inner;\\n }\\n\\n /**\\n * @dev Add a value to a set. O(1).\\n *\\n * Returns true if the value was added to the set, that is if it was not\\n * already present.\\n */\\n function add(AddressSet storage set, address value) internal returns (bool) {\\n return _add(set._inner, bytes32(uint256(uint160(value))));\\n }\\n\\n /**\\n * @dev Removes a value from a set. O(1).\\n *\\n * Returns true if the value was removed from the set, that is if it was\\n * present.\\n */\\n function remove(AddressSet storage set, address value) internal returns (bool) {\\n return _remove(set._inner, bytes32(uint256(uint160(value))));\\n }\\n\\n /**\\n * @dev Returns true if the value is in the set. O(1).\\n */\\n function contains(AddressSet storage set, address value) internal view returns (bool) {\\n return _contains(set._inner, bytes32(uint256(uint160(value))));\\n }\\n\\n /**\\n * @dev Returns the number of values in the set. O(1).\\n */\\n function length(AddressSet storage set) internal view returns (uint256) {\\n return _length(set._inner);\\n }\\n\\n /**\\n * @dev Returns the value stored at position `index` in the set. O(1).\\n *\\n * Note that there are no guarantees on the ordering of values inside the\\n * array, and it may change when more values are added or removed.\\n *\\n * Requirements:\\n *\\n * - `index` must be strictly less than {length}.\\n */\\n function at(AddressSet storage set, uint256 index) internal view returns (address) {\\n return address(uint160(uint256(_at(set._inner, index))));\\n }\\n\\n\\n // UintSet\\n\\n struct UintSet {\\n Set _inner;\\n }\\n\\n /**\\n * @dev Add a value to a set. O(1).\\n *\\n * Returns true if the value was added to the set, that is if it was not\\n * already present.\\n */\\n function add(UintSet storage set, uint256 value) internal returns (bool) {\\n return _add(set._inner, bytes32(value));\\n }\\n\\n /**\\n * @dev Removes a value from a set. O(1).\\n *\\n * Returns true if the value was removed from the set, that is if it was\\n * present.\\n */\\n function remove(UintSet storage set, uint256 value) internal returns (bool) {\\n return _remove(set._inner, bytes32(value));\\n }\\n\\n /**\\n * @dev Returns true if the value is in the set. O(1).\\n */\\n function contains(UintSet storage set, uint256 value) internal view returns (bool) {\\n return _contains(set._inner, bytes32(value));\\n }\\n\\n /**\\n * @dev Returns the number of values on the set. O(1).\\n */\\n function length(UintSet storage set) internal view returns (uint256) {\\n return _length(set._inner);\\n }\\n\\n /**\\n * @dev Returns the value stored at position `index` in the set. O(1).\\n *\\n * Note that there are no guarantees on the ordering of values inside the\\n * array, and it may change when more values are added or removed.\\n *\\n * Requirements:\\n *\\n * - `index` must be strictly less than {length}.\\n */\\n function at(UintSet storage set, uint256 index) internal view returns (uint256) {\\n return uint256(_at(set._inner, index));\\n }\\n}\\n\",\"keccak256\":\"0x9a2c1eebb65250f0e11882237038600f22a62376f0547db4acc0dfe0a3d8d34f\",\"license\":\"MIT\"},\"@openzeppelin/contracts/utils/Strings.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\n\\npragma solidity ^0.7.0;\\n\\n/**\\n * @dev String operations.\\n */\\nlibrary Strings {\\n /**\\n * @dev Converts a `uint256` to its ASCII `string` representation.\\n */\\n function toString(uint256 value) internal pure returns (string memory) {\\n // Inspired by OraclizeAPI's implementation - MIT licence\\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\\n\\n if (value == 0) {\\n return \\\"0\\\";\\n }\\n uint256 temp = value;\\n uint256 digits;\\n while (temp != 0) {\\n digits++;\\n temp /= 10;\\n }\\n bytes memory buffer = new bytes(digits);\\n uint256 index = digits - 1;\\n temp = value;\\n while (temp != 0) {\\n buffer[index--] = bytes1(uint8(48 + temp % 10));\\n temp /= 10;\\n }\\n return string(buffer);\\n }\\n}\\n\",\"keccak256\":\"0x08e38e034333372aea8cb1b8846085b7fbab42c6b77a0af464d2c6827827c4f0\",\"license\":\"MIT\"},\"src/VaultNFT.sol\":{\"content\":\"//SPDX-License-Identifier: agpl-3.0\\npragma solidity =0.7.6;\\n\\nimport \\\"@openzeppelin/contracts/token/ERC721/ERC721.sol\\\";\\nimport {Initializable} from \\\"@openzeppelin/contracts/proxy/Initializable.sol\\\";\\nimport \\\"./interfaces/IVaultNFT.sol\\\";\\n\\n/**\\n * @notice ERC721 representing ownership of a vault\\n */\\ncontract VaultNFT is ERC721, IVaultNFT, Initializable {\\n uint256 public override nextId = 1;\\n\\n address public perpetualMarket;\\n address private immutable deployer;\\n\\n modifier onlyPerpetualMarket() {\\n require(msg.sender == perpetualMarket, \\\"Not Perpetual Market\\\");\\n _;\\n }\\n\\n /**\\n * @notice Vault NFT constructor\\n * @param _name token name for ERC721\\n * @param _symbol token symbol for ERC721\\n * @param _baseURI base URI\\n */\\n constructor(\\n string memory _name,\\n string memory _symbol,\\n string memory _baseURI\\n ) ERC721(_name, _symbol) {\\n deployer = msg.sender;\\n _setBaseURI(_baseURI);\\n }\\n\\n /**\\n * @notice Initializes Vault NFT\\n * @param _perpetualMarket Perpetual Market address\\n */\\n function init(address _perpetualMarket) public initializer {\\n require(msg.sender == deployer, \\\"Caller is not deployer\\\");\\n require(_perpetualMarket != address(0), \\\"Zero address\\\");\\n perpetualMarket = _perpetualMarket;\\n }\\n\\n /**\\n * @notice mint new NFT\\n * @dev auto increment tokenId starts from 1\\n * @param _recipient recipient address for NFT\\n */\\n function mintNFT(address _recipient) external override onlyPerpetualMarket returns (uint256 tokenId) {\\n _safeMint(_recipient, (tokenId = nextId++));\\n }\\n}\\n\",\"keccak256\":\"0x9db28d52580aa077b73ab8ee643274da7c74f1d82570f7dc48b754bf9b7315ee\",\"license\":\"agpl-3.0\"},\"src/interfaces/IVaultNFT.sol\":{\"content\":\"// SPDX-License-Identifier: agpl-3.0\\npragma solidity =0.7.6;\\n\\nimport \\\"@openzeppelin/contracts/token/ERC721/IERC721.sol\\\";\\n\\ninterface IVaultNFT is IERC721 {\\n function nextId() external returns (uint256);\\n\\n function mintNFT(address _recipient) external returns (uint256 tokenId);\\n}\\n\",\"keccak256\":\"0x24579c7330ce36c6115b8767566670ff7ae48f51b773ac3afc105478cd7070f1\",\"license\":\"agpl-3.0\"}},\"version\":1}", "bytecode": 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"devdoc": { "kind": "dev", "methods": { "approve(address,uint256)": { "details": "See {IERC721-approve}." }, "balanceOf(address)": { "details": "See {IERC721-balanceOf}." }, "baseURI()": { "details": "Returns the base URI set via {_setBaseURI}. This will be automatically added as a prefix in {tokenURI} to each token's URI, or to the token ID if no specific URI is set for that token ID." }, "constructor": { "params": { "_baseURI": "base URI", "_name": "token name for ERC721", "_symbol": "token symbol for ERC721" } }, "getApproved(uint256)": { "details": "See {IERC721-getApproved}." }, "init(address)": { "params": { "_perpetualMarket": "Perpetual Market address" } }, "isApprovedForAll(address,address)": { "details": "See {IERC721-isApprovedForAll}." }, "mintNFT(address)": { "details": "auto increment tokenId starts from 1", "params": { "_recipient": "recipient address for NFT" } }, "name()": { "details": "See {IERC721Metadata-name}." }, "ownerOf(uint256)": { "details": "See {IERC721-ownerOf}." }, "safeTransferFrom(address,address,uint256)": { "details": "See {IERC721-safeTransferFrom}." }, "safeTransferFrom(address,address,uint256,bytes)": { "details": "See {IERC721-safeTransferFrom}." }, "setApprovalForAll(address,bool)": { "details": "See {IERC721-setApprovalForAll}." }, "supportsInterface(bytes4)": { "details": "See {IERC165-supportsInterface}. Time complexity O(1), guaranteed to always use less than 30 000 gas." }, "symbol()": { "details": "See {IERC721Metadata-symbol}." }, "tokenByIndex(uint256)": { "details": "See {IERC721Enumerable-tokenByIndex}." }, "tokenOfOwnerByIndex(address,uint256)": { "details": "See {IERC721Enumerable-tokenOfOwnerByIndex}." }, "tokenURI(uint256)": { "details": "See {IERC721Metadata-tokenURI}." }, "totalSupply()": { "details": "See {IERC721Enumerable-totalSupply}." }, "transferFrom(address,address,uint256)": { "details": "See {IERC721-transferFrom}." } }, "version": 1 }, "userdoc": { "kind": "user", "methods": { "constructor": { "notice": "Vault NFT constructor" }, "init(address)": { "notice": "Initializes Vault NFT" }, "mintNFT(address)": { "notice": "mint new NFT" } }, "notice": "ERC721 representing ownership of a vault", "version": 1 }, "storageLayout": { "storage": [ { "astId": 169, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_supportedInterfaces", "offset": 0, "slot": "0", "type": "t_mapping(t_bytes4,t_bool)" }, { "astId": 1664, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_holderTokens", "offset": 0, "slot": "1", "type": "t_mapping(t_address,t_struct(UintSet)4030_storage)" }, { "astId": 1666, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_tokenOwners", "offset": 0, "slot": "2", "type": "t_struct(UintToAddressMap)3407_storage" }, { "astId": 1670, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_tokenApprovals", "offset": 0, "slot": "4", "type": "t_mapping(t_uint256,t_address)" }, { "astId": 1676, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_operatorApprovals", "offset": 0, "slot": "5", "type": "t_mapping(t_address,t_mapping(t_address,t_bool))" }, { "astId": 1678, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_name", "offset": 0, "slot": "6", "type": "t_string_storage" }, { "astId": 1680, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_symbol", "offset": 0, "slot": "7", "type": "t_string_storage" }, { "astId": 1684, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_tokenURIs", "offset": 0, "slot": "8", "type": "t_mapping(t_uint256,t_string_storage)" }, { "astId": 1686, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_baseURI", "offset": 0, "slot": "9", "type": "t_string_storage" }, { "astId": 765, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_initialized", "offset": 0, "slot": "10", "type": "t_bool" }, { "astId": 768, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_initializing", "offset": 1, "slot": "10", "type": "t_bool" }, { "astId": 12157, "contract": "src/VaultNFT.sol:VaultNFT", "label": "nextId", "offset": 0, "slot": "11", "type": "t_uint256" }, { "astId": 12159, "contract": "src/VaultNFT.sol:VaultNFT", "label": "perpetualMarket", "offset": 0, "slot": "12", "type": "t_address" } ], "types": { "t_address": { "encoding": "inplace", "label": "address", "numberOfBytes": "20" }, "t_array(t_bytes32)dyn_storage": { "base": "t_bytes32", "encoding": "dynamic_array", "label": "bytes32[]", "numberOfBytes": "32" }, "t_array(t_struct(MapEntry)3081_storage)dyn_storage": { "base": "t_struct(MapEntry)3081_storage", "encoding": "dynamic_array", "label": "struct EnumerableMap.MapEntry[]", "numberOfBytes": "32" }, "t_bool": { "encoding": "inplace", "label": "bool", "numberOfBytes": "1" }, "t_bytes32": { "encoding": "inplace", "label": "bytes32", "numberOfBytes": "32" }, "t_bytes4": { "encoding": "inplace", "label": "bytes4", "numberOfBytes": "4" }, "t_mapping(t_address,t_bool)": { "encoding": "mapping", "key": "t_address", "label": "mapping(address => bool)", "numberOfBytes": "32", "value": "t_bool" }, "t_mapping(t_address,t_mapping(t_address,t_bool))": { "encoding": "mapping", "key": "t_address", "label": "mapping(address => mapping(address => bool))", "numberOfBytes": "32", "value": "t_mapping(t_address,t_bool)" }, "t_mapping(t_address,t_struct(UintSet)4030_storage)": { "encoding": "mapping", "key": "t_address", "label": "mapping(address => struct EnumerableSet.UintSet)", "numberOfBytes": "32", "value": "t_struct(UintSet)4030_storage" }, "t_mapping(t_bytes32,t_uint256)": { "encoding": "mapping", "key": "t_bytes32", "label": "mapping(bytes32 => uint256)", "numberOfBytes": "32", "value": "t_uint256" }, "t_mapping(t_bytes4,t_bool)": { "encoding": "mapping", "key": "t_bytes4", "label": "mapping(bytes4 => bool)", "numberOfBytes": "32", "value": "t_bool" }, "t_mapping(t_uint256,t_address)": { "encoding": "mapping", "key": "t_uint256", "label": "mapping(uint256 => address)", "numberOfBytes": "32", "value": "t_address" }, "t_mapping(t_uint256,t_string_storage)": { "encoding": "mapping", "key": "t_uint256", "label": "mapping(uint256 => string)", "numberOfBytes": "32", "value": "t_string_storage" }, "t_string_storage": { "encoding": "bytes", "label": "string", "numberOfBytes": "32" }, "t_struct(Map)3089_storage": { "encoding": "inplace", "label": "struct EnumerableMap.Map", "members": [ { "astId": 3084, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_entries", "offset": 0, "slot": "0", "type": "t_array(t_struct(MapEntry)3081_storage)dyn_storage" }, { "astId": 3088, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_indexes", "offset": 0, "slot": "1", "type": "t_mapping(t_bytes32,t_uint256)" } ], "numberOfBytes": "64" }, "t_struct(MapEntry)3081_storage": { "encoding": "inplace", "label": "struct EnumerableMap.MapEntry", "members": [ { "astId": 3078, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_key", "offset": 0, "slot": "0", "type": "t_bytes32" }, { "astId": 3080, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_value", "offset": 0, "slot": "1", "type": "t_bytes32" } ], "numberOfBytes": "64" }, "t_struct(Set)3644_storage": { "encoding": "inplace", "label": "struct EnumerableSet.Set", "members": [ { "astId": 3639, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_values", "offset": 0, "slot": "0", "type": "t_array(t_bytes32)dyn_storage" }, { "astId": 3643, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_indexes", "offset": 0, "slot": "1", "type": "t_mapping(t_bytes32,t_uint256)" } ], "numberOfBytes": "64" }, "t_struct(UintSet)4030_storage": { "encoding": "inplace", "label": "struct EnumerableSet.UintSet", "members": [ { "astId": 4029, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_inner", "offset": 0, "slot": "0", "type": "t_struct(Set)3644_storage" } ], "numberOfBytes": "64" }, "t_struct(UintToAddressMap)3407_storage": { "encoding": "inplace", "label": "struct EnumerableMap.UintToAddressMap", "members": [ { "astId": 3406, "contract": "src/VaultNFT.sol:VaultNFT", "label": "_inner", "offset": 0, "slot": "0", "type": "t_struct(Map)3089_storage" } ], "numberOfBytes": "64" }, "t_uint256": { "encoding": "inplace", "label": "uint256", "numberOfBytes": "32" } } } }