{ "contractName": "ERC721", "abi": [ { "inputs": [ { "internalType": "string", "name": "name", "type": "string" }, { "internalType": "string", "name": "symbol", "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": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "ownerOf", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "name", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "symbol", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "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": "baseURI", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "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": [], "name": "totalSupply", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "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": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "approve", "outputs": [], "stateMutability": "nonpayable", "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": "operator", "type": "address" }, { "internalType": "bool", "name": "approved", "type": "bool" } ], "name": "setApprovalForAll", "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": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "transferFrom", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "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" } ], "metadata": "{\"compiler\":{\"version\":\"0.6.6+commit.6c089d02\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"name\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"symbol\",\"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\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"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\":{\"details\":\"see https://eips.ethereum.org/EIPS/eip-721\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"Approves another address to transfer the given token ID The zero address indicates there is no approved address. There can only be one approved address per token at a given time. Can only be called by the token owner or an approved operator.\",\"params\":{\"to\":\"address to be approved for the given token ID\",\"tokenId\":\"uint256 ID of the token to be approved\"}},\"balanceOf(address)\":{\"details\":\"Gets the balance of the specified address.\",\"params\":{\"owner\":\"address to query the balance of\"},\"returns\":{\"_0\":\"uint256 representing the amount owned by the passed address\"}},\"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.\"},\"getApproved(uint256)\":{\"details\":\"Gets the approved address for a token ID, or zero if no address set Reverts if the token ID does not exist.\",\"params\":{\"tokenId\":\"uint256 ID of the token to query the approval of\"},\"returns\":{\"_0\":\"address currently approved for the given token ID\"}},\"isApprovedForAll(address,address)\":{\"details\":\"Tells whether an operator is approved by a given owner.\",\"params\":{\"operator\":\"operator address which you want to query the approval of\",\"owner\":\"owner address which you want to query the approval of\"},\"returns\":{\"_0\":\"bool whether the given operator is approved by the given owner\"}},\"name()\":{\"details\":\"Gets the token name.\",\"returns\":{\"_0\":\"string representing the token name\"}},\"ownerOf(uint256)\":{\"details\":\"Gets the owner of the specified token ID.\",\"params\":{\"tokenId\":\"uint256 ID of the token to query the owner of\"},\"returns\":{\"_0\":\"address currently marked as the owner of the given token ID\"}},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"Safely transfers the ownership of a given token ID to another address If the target address is a contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer, and return the magic value `bytes4(keccak256(\\\"onERC721Received(address,address,uint256,bytes)\\\"))`; otherwise, the transfer is reverted. Requires the msg.sender to be the owner, approved, or operator\",\"params\":{\"from\":\"current owner of the token\",\"to\":\"address to receive the ownership of the given token ID\",\"tokenId\":\"uint256 ID of the token to be transferred\"}},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"Safely transfers the ownership of a given token ID to another address If the target address is a contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer, and return the magic value `bytes4(keccak256(\\\"onERC721Received(address,address,uint256,bytes)\\\"))`; otherwise, the transfer is reverted. Requires the _msgSender() to be the owner, approved, or operator\",\"params\":{\"_data\":\"bytes data to send along with a safe transfer check\",\"from\":\"current owner of the token\",\"to\":\"address to receive the ownership of the given token ID\",\"tokenId\":\"uint256 ID of the token to be transferred\"}},\"setApprovalForAll(address,bool)\":{\"details\":\"Sets or unsets the approval of a given operator An operator is allowed to transfer all tokens of the sender on their behalf.\",\"params\":{\"approved\":\"representing the status of the approval to be set\",\"operator\":\"operator address to set the approval\"}},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}. * Time complexity O(1), guaranteed to always use less than 30 000 gas.\"},\"symbol()\":{\"details\":\"Gets the token symbol.\",\"returns\":{\"_0\":\"string representing the token symbol\"}},\"tokenByIndex(uint256)\":{\"details\":\"Gets the token ID at a given index of all the tokens in this contract Reverts if the index is greater or equal to the total number of tokens.\",\"params\":{\"index\":\"uint256 representing the index to be accessed of the tokens list\"},\"returns\":{\"_0\":\"uint256 token ID at the given index of the tokens list\"}},\"tokenOfOwnerByIndex(address,uint256)\":{\"details\":\"Gets the token ID at a given index of the tokens list of the requested owner.\",\"params\":{\"index\":\"uint256 representing the index to be accessed of the requested tokens list\",\"owner\":\"address owning the tokens list to be accessed\"},\"returns\":{\"_0\":\"uint256 token ID at the given index of the tokens list owned by the requested address\"}},\"tokenURI(uint256)\":{\"details\":\"Returns the URI for a given token ID. May return an empty string. * If a base URI is set (via {_setBaseURI}), it is added as a prefix to the token's own URI (via {_setTokenURI}). * If there is a base URI but no token URI, the token's ID will be used as its URI when appending it to the base URI. This pattern for autogenerated token URIs can lead to large gas savings. * .Examples |=== |`_setBaseURI()` |`_setTokenURI()` |`tokenURI()` | \\\"\\\" | \\\"\\\" | \\\"\\\" | \\\"\\\" | \\\"token.uri/123\\\" | \\\"token.uri/123\\\" | \\\"token.uri/\\\" | \\\"123\\\" | \\\"token.uri/123\\\" | \\\"token.uri/\\\" | \\\"\\\" | \\\"token.uri/\\\" |=== * Requirements: * - `tokenId` must exist.\"},\"totalSupply()\":{\"details\":\"Gets the total amount of tokens stored by the contract.\",\"returns\":{\"_0\":\"uint256 representing the total amount of tokens\"}},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers the ownership of a given token ID to another address. Usage of this method is discouraged, use {safeTransferFrom} whenever possible. Requires the msg.sender to be the owner, approved, or operator.\",\"params\":{\"from\":\"current owner of the token\",\"to\":\"address to receive the ownership of the given token ID\",\"tokenId\":\"uint256 ID of the token to be transferred\"}}},\"title\":\"ERC721 Non-Fungible Token Standard basic 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"source": "pragma solidity ^0.6.0;\n\nimport \"../../GSN/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 ^ 0xe985e9c ^ 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 constructor (string memory name, string memory symbol) public {\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 Gets the balance of the specified address.\n * @param owner address to query the balance of\n * @return uint256 representing the amount owned by the passed address\n */\n function balanceOf(address owner) public view override returns (uint256) {\n require(owner != address(0), \"ERC721: balance query for the zero address\");\n\n return _holderTokens[owner].length();\n }\n\n /**\n * @dev Gets the owner of the specified token ID.\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 */\n function ownerOf(uint256 tokenId) public view override returns (address) {\n return _tokenOwners.get(tokenId, \"ERC721: owner query for nonexistent token\");\n }\n\n /**\n * @dev Gets the token name.\n * @return string representing the token name\n */\n function name() public view override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Gets the token symbol.\n * @return string representing the token symbol\n */\n function symbol() public view override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the URI for a given token ID. May return an empty string.\n *\n * If a base URI is set (via {_setBaseURI}), it is added as a prefix to the\n * token's own URI (via {_setTokenURI}).\n *\n * If there is a base URI but no token URI, the token's ID will be used as\n * its URI when appending it to the base URI. This pattern for autogenerated\n * token URIs can lead to large gas savings.\n *\n * .Examples\n * |===\n * |`_setBaseURI()` |`_setTokenURI()` |`tokenURI()`\n * | \"\"\n * | \"\"\n * | \"\"\n * | \"\"\n * | \"token.uri/123\"\n * | \"token.uri/123\"\n * | \"token.uri/\"\n * | \"123\"\n * | \"token.uri/123\"\n * | \"token.uri/\"\n * | \"\"\n * | \"token.uri/\"\n * |===\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n require(_exists(tokenId), \"ERC721Metadata: URI query for nonexistent token\");\n\n string memory _tokenURI = _tokenURIs[tokenId];\n\n // If there is no base URI, return the token URI.\n if (bytes(_baseURI).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(_baseURI, _tokenURI));\n }\n // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.\n return string(abi.encodePacked(_baseURI, 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 returns (string memory) {\n return _baseURI;\n }\n\n /**\n * @dev Gets the token ID at a given index of the tokens list of the requested owner.\n * @param owner address owning the tokens list to be accessed\n * @param index uint256 representing the index to be accessed of the requested tokens list\n * @return uint256 token ID at the given index of the tokens list owned by the requested address\n */\n function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {\n return _holderTokens[owner].at(index);\n }\n\n /**\n * @dev Gets the total amount of tokens stored by the contract.\n * @return uint256 representing the total amount of tokens\n */\n function totalSupply() public view 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 Gets the token ID at a given index of all the tokens in this contract\n * Reverts if the index is greater or equal to the total number of tokens.\n * @param index uint256 representing the index to be accessed of the tokens list\n * @return uint256 token ID at the given index of the tokens list\n */\n function tokenByIndex(uint256 index) public view override returns (uint256) {\n (uint256 tokenId, ) = _tokenOwners.at(index);\n return tokenId;\n }\n\n /**\n * @dev Approves another address to transfer the given token ID\n * The zero address indicates there is no approved address.\n * There can only be one approved address per token at a given time.\n * Can only be called by the token owner or an approved operator.\n * @param to address to be approved for the given token ID\n * @param tokenId uint256 ID of the token to be approved\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(_msgSender() == owner || 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 Gets the approved address for a token ID, or zero if no address set\n * Reverts if the token ID does not exist.\n * @param tokenId uint256 ID of the token to query the approval of\n * @return address currently approved for the given token ID\n */\n function getApproved(uint256 tokenId) public view override returns (address) {\n require(_exists(tokenId), \"ERC721: approved query for nonexistent token\");\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev Sets or unsets the approval of a given operator\n * An operator is allowed to transfer all tokens of the sender on their behalf.\n * @param operator operator address to set the approval\n * @param approved representing the status of the approval to be set\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 Tells whether an operator is approved by a given owner.\n * @param owner owner address which you want to query the approval of\n * @param operator operator address which you want to query the approval of\n * @return bool whether the given operator is approved by the given owner\n */\n function isApprovedForAll(address owner, address operator) public view override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev Transfers the ownership of a given token ID to another address.\n * Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n * Requires the msg.sender to be the owner, approved, or operator.\n * @param from current owner of the token\n * @param to address to receive the ownership of the given token ID\n * @param tokenId uint256 ID of the token to be transferred\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 Safely transfers the ownership of a given token ID to another address\n * If the target address is a contract, it must implement {IERC721Receiver-onERC721Received},\n * which is called upon a safe transfer, and return the magic value\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n * the transfer is reverted.\n * Requires the msg.sender to be the owner, approved, or operator\n * @param from current owner of the token\n * @param to address to receive the ownership of the given token ID\n * @param tokenId uint256 ID of the token to be transferred\n */\n function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev Safely transfers the ownership of a given token ID to another address\n * If the target address is a contract, it must implement {IERC721Receiver-onERC721Received},\n * which is called upon a safe transfer, and return the magic value\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n * the transfer is reverted.\n * Requires the _msgSender() to be the owner, approved, or operator\n * @param from current owner of the token\n * @param to address to receive the ownership of the given token ID\n * @param tokenId uint256 ID of the token to be transferred\n * @param _data bytes data to send along with a safe transfer check\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 the ownership of a given token ID to another address\n * If the target address is a contract, it must implement `onERC721Received`,\n * which is called upon a safe transfer, and return the magic value\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n * the transfer is reverted.\n * Requires the msg.sender to be the owner, approved, or operator\n * @param from current owner of the token\n * @param to address to receive the ownership of the given token ID\n * @param tokenId uint256 ID of the token to be transferred\n * @param _data bytes data to send along with a safe transfer check\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 the specified token exists.\n * @param tokenId uint256 ID of the token to query the existence of\n * @return bool whether the token exists\n */\n function _exists(uint256 tokenId) internal view returns (bool) {\n return _tokenOwners.contains(tokenId);\n }\n\n /**\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 */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) {\n require(_exists(tokenId), \"ERC721: operator query for nonexistent token\");\n address owner = ownerOf(tokenId);\n return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));\n }\n\n /**\n * @dev Internal function to safely mint a new token.\n * Reverts if the given token ID already exists.\n * If the target address is a contract, it must implement `onERC721Received`,\n * which is called upon a safe transfer, and return the magic value\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n * the transfer is reverted.\n * @param to The address that will own the minted token\n * @param tokenId uint256 ID of the token to be minted\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Internal function to safely mint a new token.\n * Reverts if the given token ID already exists.\n * If the target address is a contract, it must implement `onERC721Received`,\n * which is called upon a safe transfer, and return the magic value\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n * the transfer is reverted.\n * @param to The address that will own the minted token\n * @param tokenId uint256 ID of the token to be minted\n * @param _data bytes data to send along with a safe transfer check\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 Internal function to mint a new token.\n * Reverts if the given token ID already exists.\n * @param to The address that will own the minted token\n * @param tokenId uint256 ID of the token to be minted\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 Internal function to burn a specific token.\n * Reverts if the token does not exist.\n * @param tokenId uint256 ID of the token being burned\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ownerOf(tokenId);\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 Internal function to transfer ownership of a given token ID to another address.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n * @param from current owner of the token\n * @param to address to receive the ownership of the given token ID\n * @param tokenId uint256 ID of the token to be transferred\n */\n function _transfer(address from, address to, uint256 tokenId) internal virtual {\n require(ownerOf(tokenId) == from, \"ERC721: transfer of token that is not own\");\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 Internal function to set the token URI for a given token.\n *\n * Reverts if the token ID does not exist.\n *\n * TIP: If all token IDs share a prefix (for example, if your URIs look like\n * `https://api.myproject.com/token/`), use {_setBaseURI} to store\n * it and save gas.\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 // solhint-disable-next-line avoid-low-level-calls\n (bool success, bytes memory returndata) = to.call(abi.encodeWithSelector(\n IERC721Receiver(to).onERC721Received.selector,\n _msgSender(),\n from,\n tokenId,\n _data\n ));\n if (!success) {\n if (returndata.length > 0) {\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(\"ERC721: transfer to non ERC721Receiver implementer\");\n }\n } else {\n bytes4 retval = abi.decode(returndata, (bytes4));\n return (retval == _ERC721_RECEIVED);\n }\n }\n\n function _approve(address to, uint256 tokenId) private {\n _tokenApprovals[tokenId] = to;\n emit Approval(ownerOf(tokenId), to, tokenId);\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` and `to` are never both 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 tokenId) internal virtual { }\n}\n", "sourcePath": "@openzeppelin/contracts/token/ERC721/ERC721.sol", "ast": { "absolutePath": "@openzeppelin/contracts/token/ERC721/ERC721.sol", "exportedSymbols": { "ERC721": [ 12151 ] }, "id": 12152, "nodeType": "SourceUnit", "nodes": [ { "id": 11205, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:71" }, { "absolutePath": "@openzeppelin/contracts/GSN/Context.sol", "file": "../../GSN/Context.sol", "id": 11206, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 10753, "src": "25:31:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721.sol", "file": "./IERC721.sol", "id": 11207, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12260, "src": "57:23:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721Metadata.sol", "file": "./IERC721Metadata.sol", "id": 11208, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12312, "src": "81:31:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721Enumerable.sol", "file": "./IERC721Enumerable.sol", "id": 11209, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12288, "src": "113:33:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol", "file": "./IERC721Receiver.sol", "id": 11210, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12330, "src": "147:31:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/introspection/ERC165.sol", "file": "../../introspection/ERC165.sol", "id": 11211, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 10918, "src": "179:40:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 11212, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 11126, "src": "220:33:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Address.sol", "file": "../../utils/Address.sol", "id": 11213, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12394, "src": "254:33:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/EnumerableSet.sol", "file": "../../utils/EnumerableSet.sol", "id": 11214, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 13354, "src": "288:39:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/EnumerableMap.sol", "file": "../../utils/EnumerableMap.sol", "id": 11215, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12959, "src": "328:39:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Strings.sol", "file": "../../utils/Strings.sol", "id": 11216, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 13441, "src": "368:33:71", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 11218, "name": "Context", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10752, "src": "547:7:71", "typeDescriptions": { "typeIdentifier": "t_contract$_Context_$10752", "typeString": "contract Context" } }, "id": 11219, "nodeType": "InheritanceSpecifier", "src": "547:7:71" }, 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"lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6293:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 11407, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "6293:23:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 11408, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6319:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "6293:27:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 11420, "nodeType": "IfStatement", "src": "6289:110:71", "trueBody": { "id": 11419, "nodeType": "Block", "src": "6322:77:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11414, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "6367:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, { "argumentTypes": null, "id": 11415, "name": "_tokenURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11387, "src": "6377:9:71", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } ], "expression": { "argumentTypes": null, "id": 11412, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "6350:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 11413, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "6350:16:71", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 11416, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6350:37:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 11411, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6343:6:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 11410, "name": "string", "nodeType": "ElementaryTypeName", "src": "6343:6:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11417, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6343:45:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 11378, "id": 11418, "nodeType": "Return", "src": "6336:52:71" } ] } }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11425, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "6529:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 11426, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11373, "src": "6539:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11427, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "toString", "nodeType": "MemberAccess", "referencedDeclaration": 13439, "src": "6539:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$returns$_t_string_memory_ptr_$bound_to$_t_uint256_$", "typeString": "function (uint256) pure returns (string memory)" } }, "id": 11428, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6539:18:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } ], "expression": { "argumentTypes": null, "id": 11423, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "6512:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 11424, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "6512:16:71", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 11429, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6512:46:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 11422, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6505:6:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 11421, "name": "string", "nodeType": "ElementaryTypeName", "src": "6505:6:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11430, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6505:54:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 11378, "id": 11431, "nodeType": "Return", "src": "6498:61:71" } ] }, "documentation": { "id": 11371, "nodeType": "StructuredDocumentation", "src": "4989:832:71", "text": "@dev Returns the URI for a given token ID. May return an empty string.\n * If a base URI is set (via {_setBaseURI}), it is added as a prefix to the\ntoken's own URI (via {_setTokenURI}).\n * If there is a base URI but no token URI, the token's ID will be used as\nits URI when appending it to the base URI. This pattern for autogenerated\ntoken URIs can lead to large gas savings.\n * .Examples\n|===\n|`_setBaseURI()` |`_setTokenURI()` |`tokenURI()`\n| \"\"\n| \"\"\n| \"\"\n| \"\"\n| \"token.uri/123\"\n| \"token.uri/123\"\n| \"token.uri/\"\n| \"123\"\n| \"token.uri/123\"\n| \"token.uri/\"\n| \"\"\n| \"token.uri/\"\n|===\n * Requirements:\n * - `tokenId` must exist." }, "functionSelector": "c87b56dd", "id": 11433, "implemented": true, "kind": "function", "modifiers": [], "name": "tokenURI", "nodeType": "FunctionDefinition", "overrides": { "id": 11375, "nodeType": "OverrideSpecifier", "overrides": [], "src": "5873:8:71" }, "parameters": { "id": 11374, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11373, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11433, "src": "5844:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11372, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5844:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "5843:17:71" }, "returnParameters": { "id": 11378, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11377, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11433, "src": "5891:13:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 11376, "name": "string", "nodeType": "ElementaryTypeName", "src": "5891:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "5890:15:71" }, "scope": 12151, "src": "5826:740:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "body": { "id": 11441, "nodeType": "Block", "src": "6853:32:71", "statements": [ { "expression": { "argumentTypes": null, "id": 11439, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "6870:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "functionReturnParameters": 11438, "id": 11440, "nodeType": "Return", "src": "6863:15:71" } ] }, "documentation": { "id": 11434, "nodeType": "StructuredDocumentation", "src": "6572:221:71", "text": "@dev Returns the base URI set via {_setBaseURI}. This will be\nautomatically added as a prefix in {tokenURI} to each token's URI, or\nto the token ID if no specific URI is set for that token ID." }, "functionSelector": "6c0360eb", "id": 11442, "implemented": true, "kind": "function", "modifiers": [], "name": "baseURI", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11435, "nodeType": "ParameterList", "parameters": [], "src": "6814:2:71" }, "returnParameters": { "id": 11438, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11437, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11442, "src": "6838:13:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 11436, "name": "string", "nodeType": "ElementaryTypeName", "src": "6838:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "6837:15:71" }, "scope": 12151, "src": "6798:87:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12279 ], "body": { "id": 11460, "nodeType": "Block", "src": "7357:54:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11457, "name": "index", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11447, "src": "7398:5:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11453, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "7374:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11455, "indexExpression": { "argumentTypes": null, "id": 11454, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11445, "src": "7388:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7374:20:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11456, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "at", "nodeType": "MemberAccess", "referencedDeclaration": 13352, "src": "7374:23:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_uint256_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) view returns (uint256)" } }, "id": 11458, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7374:30:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 11452, "id": 11459, "nodeType": "Return", "src": "7367:37:71" } ] }, "documentation": { "id": 11443, "nodeType": "StructuredDocumentation", "src": "6891:363:71", "text": "@dev Gets the token ID at a given index of the tokens list of the requested owner.\n@param owner address owning the tokens list to be accessed\n@param index uint256 representing the index to be accessed of the requested tokens list\n@return uint256 token ID at the given index of the tokens list owned by the requested address" }, "functionSelector": "2f745c59", "id": 11461, "implemented": true, "kind": "function", "modifiers": [], "name": "tokenOfOwnerByIndex", "nodeType": "FunctionDefinition", "overrides": { "id": 11449, "nodeType": "OverrideSpecifier", "overrides": [], "src": "7330:8:71" }, "parameters": { "id": 11448, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11445, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11461, "src": "7288:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11444, "name": "address", "nodeType": "ElementaryTypeName", "src": "7288:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11447, "mutability": "mutable", "name": "index", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11461, "src": "7303:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11446, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7303:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7287:30:71" }, "returnParameters": { "id": 11452, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11451, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11461, "src": "7348:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11450, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7348:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7347:9:71" }, "scope": 12151, "src": "7259:152:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12270 ], "body": { "id": 11472, "nodeType": "Block", "src": "7626:138:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 11468, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "7736:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11469, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": 12866, "src": "7736:19:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_UintToAddressMap_$12783_storage_ptr_$returns$_t_uint256_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer) view returns (uint256)" } }, "id": 11470, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7736:21:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 11467, "id": 11471, "nodeType": "Return", "src": "7729:28:71" } ] }, "documentation": { "id": 11462, "nodeType": "StructuredDocumentation", "src": "7417:142:71", "text": "@dev Gets the total amount of tokens stored by the contract.\n@return uint256 representing the total amount of tokens" }, "functionSelector": "18160ddd", "id": 11473, "implemented": true, "kind": "function", "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "overrides": { "id": 11464, "nodeType": "OverrideSpecifier", "overrides": [], "src": "7599:8:71" }, "parameters": { "id": 11463, "nodeType": "ParameterList", "parameters": [], "src": "7584:2:71" }, "returnParameters": { "id": 11467, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11466, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11473, "src": "7617:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11465, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7617:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7616:9:71" }, "scope": 12151, "src": "7564:200:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12286 ], "body": { "id": 11491, "nodeType": "Block", "src": "8178:85:71", "statements": [ { "assignments": [ 11483, null ], "declarations": [ { "constant": false, "id": 11483, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11491, "src": "8189:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11482, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8189:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, null ], "id": 11488, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11486, "name": "index", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11476, "src": "8226:5:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 11484, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "8210:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11485, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "at", "nodeType": "MemberAccess", "referencedDeclaration": 12902, "src": "8210:15:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$returns$_t_uint256_$_t_address_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256) view returns (uint256,address)" } }, "id": 11487, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8210:22:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_uint256_$_t_address_$", "typeString": "tuple(uint256,address)" } }, "nodeType": "VariableDeclarationStatement", "src": "8188:44:71" }, { "expression": { "argumentTypes": null, "id": 11489, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11483, "src": "8249:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 11481, "id": 11490, "nodeType": "Return", "src": "8242:14:71" } ] }, "documentation": { "id": 11474, "nodeType": "StructuredDocumentation", "src": "7770:327:71", "text": "@dev Gets the token ID at a given index of all the tokens in this contract\nReverts if the index is greater or equal to the total number of tokens.\n@param index uint256 representing the index to be accessed of the tokens list\n@return uint256 token ID at the given index of the tokens list" }, "functionSelector": "4f6ccce7", "id": 11492, "implemented": true, "kind": "function", "modifiers": [], "name": "tokenByIndex", "nodeType": "FunctionDefinition", "overrides": { "id": 11478, "nodeType": "OverrideSpecifier", "overrides": [], "src": "8151:8:71" }, "parameters": { "id": 11477, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11476, "mutability": "mutable", "name": "index", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11492, "src": "8124:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11475, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8124:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8123:15:71" }, "returnParameters": { "id": 11481, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11480, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11492, "src": "8169:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11479, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8169:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8168:9:71" }, "scope": 12151, "src": "8102:161:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12224 ], "body": { "id": 11533, "nodeType": "Block", "src": "8754:311:71", "statements": [ { "assignments": [ 11502 ], "declarations": [ { "constant": false, "id": 11502, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11533, "src": "8764:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11501, "name": "address", "nodeType": "ElementaryTypeName", "src": "8764:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 11506, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11504, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11497, "src": "8788:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11503, "name": "ownerOf", "nodeType": "Identifier", 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}, "value": "ERC721: approval to current owner" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_b51b4875eede07862961e8f9365c6749f5fe55c6ee5d7a9e42b6912ad0b15942", "typeString": "literal_string \"ERC721: approval to current owner\"" } ], "id": 11507, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "8806:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11512, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8806:57:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11513, "nodeType": "ExpressionStatement", "src": "8806:57:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 11524, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11518, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11515, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10740, "src": "8882:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11516, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8882:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 11517, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11502, "src": "8898:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8882:21:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11520, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11502, "src": "8924:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [], "expression": { 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"t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 11523, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8907:37:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "8882:62:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a20617070726f76652063616c6c6572206973206e6f74206f776e6572206e6f7220617070726f76656420666f7220616c6c", "id": 11525, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8958:58:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_6d83cef3e0cb19b8320a9c5feb26b56bbb08f152a8e61b12eca3302d8d68b23d", "typeString": "literal_string \"ERC721: approve caller is not owner nor approved for all\"" }, "value": "ERC721: approve caller is not owner nor approved for all" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_6d83cef3e0cb19b8320a9c5feb26b56bbb08f152a8e61b12eca3302d8d68b23d", "typeString": "literal_string \"ERC721: approve caller is not owner nor approved for all\"" } ], "id": 11514, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "8874:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11526, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8874:152:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11527, "nodeType": "ExpressionStatement", "src": "8874:152:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11529, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11495, "src": "9046:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11530, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11497, "src": "9050:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11528, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12139, "src": "9037:8:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 11531, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9037:21:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11532, "nodeType": "ExpressionStatement", "src": "9037:21:71" } ] }, "documentation": { "id": 11493, "nodeType": "StructuredDocumentation", "src": "8269:410:71", "text": "@dev Approves another address to transfer the given token ID\nThe zero address indicates there is no approved address.\nThere can only be one approved address per token at a given time.\nCan only be called by the token owner or an approved operator.\n@param to address to be approved for the given token ID\n@param tokenId uint256 ID of the token to be approved" }, "functionSelector": "095ea7b3", "id": 11534, "implemented": true, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "overrides": { "id": 11499, "nodeType": "OverrideSpecifier", "overrides": [], "src": "8745:8:71" }, "parameters": { "id": 11498, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11495, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11534, "src": "8701:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11494, "name": "address", "nodeType": "ElementaryTypeName", "src": "8701:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11497, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11534, "src": 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"nodeType": "Literal", "src": "9463:46:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_9291e0f44949204f2e9b40e6be090924979d6047b2365868f4e9f027722eb89d", "typeString": "literal_string \"ERC721: approved query for nonexistent token\"" }, "value": "ERC721: approved query for nonexistent token" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_9291e0f44949204f2e9b40e6be090924979d6047b2365868f4e9f027722eb89d", "typeString": "literal_string \"ERC721: approved query for nonexistent token\"" } ], "id": 11543, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "9437:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11548, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9437:73:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11549, "nodeType": "ExpressionStatement", "src": "9437:73:71" }, { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11550, "name": "_tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11255, "src": "9528:15:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 11552, "indexExpression": { "argumentTypes": null, "id": 11551, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11537, "src": "9544:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "9528:24:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 11542, "id": 11553, "nodeType": "Return", "src": "9521:31:71" } ] }, "documentation": { "id": 11535, "nodeType": "StructuredDocumentation", "src": "9071:274:71", "text": "@dev Gets the approved address for a token ID, or zero if no address set\nReverts if the token ID does not exist.\n@param tokenId uint256 ID of the token to query the approval of\n@return address currently approved for the given token ID" }, "functionSelector": "081812fc", "id": 11555, "implemented": true, "kind": "function", "modifiers": [], "name": "getApproved", "nodeType": "FunctionDefinition", "overrides": { "id": 11539, "nodeType": "OverrideSpecifier", "overrides": [], "src": "9400:8:71" }, "parameters": { "id": 11538, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11537, "mutability": "mutable", "name": "tokenId", 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10740, "src": "10044:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11574, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10044:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10025:32:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" } }, "id": 11577, "indexExpression": { "argumentTypes": null, "id": 11575, "name": "operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11558, "src": "10058:8:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10025:42:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 11578, "name": "approved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11560, "src": "10070:8:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "10025:53:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11580, "nodeType": "ExpressionStatement", "src": "10025:53:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11582, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10740, "src": "10108:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11583, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10108:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11584, "name": "operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11558, "src": "10122:8:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11585, "name": "approved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11560, "src": "10132:8:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 11581, "name": "ApprovalForAll", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12181, "src": "10093:14:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_bool_$returns$__$", "typeString": "function (address,address,bool)" } }, "id": 11586, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10093:48:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11587, "nodeType": "EmitStatement", "src": "10088:53:71" } ] }, "documentation": { "id": 11556, "nodeType": "StructuredDocumentation", "src": "9565:288:71", "text": "@dev Sets or unsets the approval of a given operator\nAn operator is allowed to transfer all tokens of the sender on their behalf.\n@param operator operator address to set the approval\n@param approved representing the status of the approval to be set" }, "functionSelector": "a22cb465", "id": 11589, "implemented": true, "kind": "function", "modifiers": [], "name": "setApprovalForAll", "nodeType": "FunctionDefinition", "overrides": { "id": 11562, "nodeType": "OverrideSpecifier", "overrides": [], "src": "9933:8:71" }, "parameters": { "id": 11561, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11558, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11589, "src": "9885:16:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11557, "name": "address", "nodeType": "ElementaryTypeName", "src": "9885:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11560, "mutability": "mutable", "name": "approved", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11589, "src": "9903:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11559, "name": "bool", "nodeType": "ElementaryTypeName", "src": "9903:4:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "9884:33:71" }, "returnParameters": { "id": 11563, "nodeType": "ParameterList", "parameters": [], "src": "9942:0:71" }, "scope": 12151, "src": "9858:290:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" }, { "baseFunctions": [ 12247 ], "body": { "id": 11606, "nodeType": "Block", "src": "10565:59:71", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11600, "name": "_operatorApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "10582:18:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" } }, "id": 11602, "indexExpression": { "argumentTypes": null, "id": 11601, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11592, "src": "10601:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10582:25:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" } }, "id": 11604, "indexExpression": { "argumentTypes": null, "id": 11603, "name": "operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11594, "src": "10608:8:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10582:35:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 11599, "id": 11605, "nodeType": "Return", "src": "10575:42:71" } ] }, "documentation": { "id": 11590, "nodeType": "StructuredDocumentation", "src": "10154:311:71", "text": "@dev Tells whether an operator is approved by a given owner.\n@param owner owner address which you want to query the approval of\n@param operator operator address which you want to query the approval of\n@return bool whether the given operator is approved by the given owner" }, "functionSelector": "e985e9c5", "id": 11607, "implemented": true, "kind": "function", "modifiers": [], "name": "isApprovedForAll", "nodeType": "FunctionDefinition", "overrides": { "id": 11596, "nodeType": "OverrideSpecifier", "overrides": [], "src": "10541:8:71" }, "parameters": { "id": 11595, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11592, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11607, "src": "10496:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11591, "name": "address", "nodeType": "ElementaryTypeName", "src": "10496:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11594, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11607, "src": "10511:16:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11593, "name": "address", "nodeType": "ElementaryTypeName", "src": "10511:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "10495:33:71" }, "returnParameters": { "id": 11599, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11598, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11607, "src": "10559:4:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11597, "name": "bool", "nodeType": "ElementaryTypeName", "src": "10559:4:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "10558:6:71" }, "scope": 12151, "src": "10470:154:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12217 ], "body": { "id": 11633, "nodeType": "Block", "src": "11150:211:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11620, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10740, "src": "11239:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11621, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11239:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11622, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11614, "src": "11253:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11619, "name": "_isApprovedOrOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11766, "src": "11220:18:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) view returns (bool)" } }, "id": 11623, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": 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11618, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "11212:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11625, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11212:103:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11626, "nodeType": "ExpressionStatement", "src": "11212:103:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11628, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11610, "src": "11336:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11629, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11612, "src": "11342:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11630, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11614, "src": "11346:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11627, "name": "_transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12008, "src": "11326:9:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11631, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11326:28:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11632, "nodeType": "ExpressionStatement", "src": "11326:28:71" } ] }, "documentation": { "id": 11608, "nodeType": "StructuredDocumentation", "src": "10630:426:71", "text": "@dev Transfers the ownership of a given token ID to another address.\nUsage of this method is discouraged, use {safeTransferFrom} whenever possible.\nRequires the msg.sender to be the owner, approved, or operator.\n@param from current owner of the token\n@param to address to receive the ownership of the given token ID\n@param tokenId uint256 ID of the token to be transferred" }, "functionSelector": "23b872dd", "id": 11634, "implemented": true, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": 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"typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11611, "name": "address", "nodeType": "ElementaryTypeName", "src": "11097:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11614, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11634, "src": "11109:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11613, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11109:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "11082:43:71" }, "returnParameters": { "id": 11617, "nodeType": "ParameterList", "parameters": [], "src": "11150:0:71" }, "scope": 12151, "src": "11061:300:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" }, { "baseFunctions": [ 12207 ], "body": { "id": 11652, "nodeType": "Block", "src": "12103:56:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11646, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11637, "src": "12130:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11647, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11639, "src": "12136:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11648, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11641, "src": "12140:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { 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"t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (address,address,uint256,bytes memory)" } }, "id": 11650, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12113:39:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11651, "nodeType": "ExpressionStatement", "src": "12113:39:71" } ] }, "documentation": { "id": 11635, "nodeType": "StructuredDocumentation", "src": "11367:638:71", "text": "@dev Safely transfers the ownership of a given token ID to another address\nIf the target address is a contract, it must implement {IERC721Receiver-onERC721Received},\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\nRequires the 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"name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11731, "src": "15077:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11752, "name": "getApproved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11555, "src": "15065:11:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 11754, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15065:20:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 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"address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 11758, "name": "isApprovedForAll", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11607, "src": "15100:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 11761, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15100:32:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "15045:87:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 11763, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "15044:89:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 11735, "id": 11764, "nodeType": "Return", "src": "15037:96:71" } ] }, "documentation": { "id": 11727, "nodeType": "StructuredDocumentation", "src": "14456:350:71", "text": "@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,\nis an operator of the owner, or is the owner of the token" }, "id": 11766, "implemented": true, "kind": "function", "modifiers": [], "name": "_isApprovedOrOwner", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11732, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11729, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11766, "src": "14839:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11728, "name": "address", "nodeType": "ElementaryTypeName", "src": "14839:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11731, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11766, "src": "14856:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11730, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "14856:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "14838:34:71" }, 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the given token ID already exists.\nIf the target address is a contract, it must implement `onERC721Received`,\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\n@param to The address that will own the minted token\n@param tokenId uint256 ID of the token to be minted" }, "id": 11781, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeMint", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11772, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11769, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11781, "src": "15688:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11768, "name": "address", "nodeType": "ElementaryTypeName", 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"16509:22:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (address,address,uint256,bytes memory) returns (bool)" } }, "id": 11805, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16509:54:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 11806, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "16565:52:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 11796, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "16501:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11807, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16501:117:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11808, "nodeType": "ExpressionStatement", "src": "16501:117:71" } ] }, "documentation": { "id": 11782, "nodeType": "StructuredDocumentation", "src": "15783:590:71", "text": "@dev Internal function to safely mint a new token.\nReverts if the given token ID already exists.\nIf the target address is a contract, it must implement `onERC721Received`,\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\n@param to The address that will own the minted token\n@param tokenId uint256 ID of the token to be minted\n@param _data bytes data to send along with a safe transfer check" }, "id": 11810, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeMint", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11789, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11784, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11810, "src": "16397:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11783, "name": "address", "nodeType": "ElementaryTypeName", "src": "16397:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11786, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11810, "src": "16409:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11785, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16409:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11788, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11810, "src": "16426:18:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 11787, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "16426:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "16396:49:71" }, "returnParameters": { "id": 11790, "nodeType": "ParameterList", "parameters": [], "src": "16463:0:71" }, "scope": 12151, "src": "16378:247:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 11868, "nodeType": "Block", "src": "16931:332:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11824, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11819, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "16949:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11822, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "16963:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11821, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "16955:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11820, "name": "address", "nodeType": "ElementaryTypeName", "src": "16955:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11823, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16955:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "16949:16:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a206d696e7420746f20746865207a65726f2061646472657373", "id": 11825, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "16967:34:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_8a66f4bb6512ffbfcc3db9b42318eb65f26ac15163eaa9a1e5cfa7bee9d1c7c6", "typeString": "literal_string \"ERC721: mint to the zero address\"" }, "value": "ERC721: mint to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_8a66f4bb6512ffbfcc3db9b42318eb65f26ac15163eaa9a1e5cfa7bee9d1c7c6", "typeString": "literal_string \"ERC721: mint to the zero address\"" } ], "id": 11818, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "16941:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11826, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16941:61:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11827, "nodeType": "ExpressionStatement", "src": "16941:61:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11832, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "17020:17:71", "subExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11830, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17029:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11829, "name": "_exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11726, "src": "17021:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_bool_$", "typeString": "function (uint256) view returns (bool)" } }, "id": 11831, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17021:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a20746f6b656e20616c7265616479206d696e746564", "id": 11833, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "17039:30:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_2a63ce106ef95058ed21fd07c42a10f11dc5c32ac13a4e847923f7759f635d57", "typeString": "literal_string \"ERC721: token already minted\"" }, "value": "ERC721: token already minted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_2a63ce106ef95058ed21fd07c42a10f11dc5c32ac13a4e847923f7759f635d57", "typeString": "literal_string \"ERC721: token already minted\"" } ], "id": 11828, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "17012:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11834, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17012:58:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11835, "nodeType": "ExpressionStatement", "src": "17012:58:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11839, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17110:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11838, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17102:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11837, "name": "address", "nodeType": "ElementaryTypeName", "src": "17102:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11840, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17102:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11841, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "17114:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11842, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17118:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11836, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12150, "src": "17081:20:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11843, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17081:45:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11844, "nodeType": "ExpressionStatement", "src": "17081:45:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11849, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17159:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11845, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "17137:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11847, "indexExpression": { "argumentTypes": null, "id": 11846, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "17151:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17137:17:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11848, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 13278, "src": "17137:21:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) returns (bool)" } }, "id": 11850, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17137:30:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11851, "nodeType": "ExpressionStatement", "src": "17137:30:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11855, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17195:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 11856, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "17204:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "id": 11852, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "17178:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11854, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "set", "nodeType": "MemberAccess", "referencedDeclaration": 12812, "src": "17178:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$_t_address_$returns$_t_bool_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256,address) returns (bool)" } }, "id": 11857, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17178:29:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11858, "nodeType": "ExpressionStatement", "src": "17178:29:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11862, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17240:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11861, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17232:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11860, "name": "address", "nodeType": "ElementaryTypeName", "src": "17232:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11863, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17232:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11864, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "17244:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11865, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17248:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11859, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12165, "src": "17223:8:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11866, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17223:33:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11867, "nodeType": "EmitStatement", "src": "17218:38:71" } ] }, "documentation": { "id": 11811, "nodeType": "StructuredDocumentation", "src": "16631:234:71", "text": "@dev Internal function to mint a new token.\nReverts if the given token ID already exists.\n@param to The address that will own the minted token\n@param tokenId uint256 ID of the token to be minted" }, "id": 11869, "implemented": true, "kind": "function", "modifiers": [], "name": "_mint", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11816, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11813, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11869, "src": "16885:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11812, "name": "address", "nodeType": "ElementaryTypeName", "src": "16885:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11815, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11869, "src": "16897:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11814, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16897:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "16884:29:71" }, "returnParameters": { "id": 11817, "nodeType": "ParameterList", "parameters": [], "src": "16931:0:71" }, "scope": 12151, "src": "16870:393:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 11936, "nodeType": "Block", "src": "17493:453:71", "statements": [ { "assignments": [ 11876 ], "declarations": [ { "constant": false, "id": 11876, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11936, "src": "17503:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11875, "name": "address", "nodeType": "ElementaryTypeName", "src": "17503:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 11880, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11878, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17527:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11877, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11350, "src": "17519:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 11879, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17519:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "17503:32:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11882, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11876, "src": "17567:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11885, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17582:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11884, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17574:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11883, "name": "address", "nodeType": "ElementaryTypeName", "src": "17574:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11886, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17574:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11887, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17586:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11881, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12150, "src": "17546:20:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11888, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17546:48:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11889, "nodeType": "ExpressionStatement", "src": "17546:48:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11893, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17649:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11892, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17641:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11891, "name": "address", "nodeType": "ElementaryTypeName", "src": "17641:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11894, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17641:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11895, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17653:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11890, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12139, "src": "17632:8:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 11896, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17632:29:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11897, "nodeType": "ExpressionStatement", "src": "17632:29:71" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11906, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11900, "name": "_tokenURIs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11269, "src": "17717:10:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_string_storage_$", "typeString": "mapping(uint256 => string storage ref)" } }, "id": 11902, "indexExpression": { "argumentTypes": null, "id": 11901, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17728:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17717:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } ], "id": 11899, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17711:5:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes_storage_ptr_$", "typeString": "type(bytes storage pointer)" }, "typeName": { "id": 11898, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "17711:5:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11903, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17711:26:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes storage pointer" } }, "id": 11904, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "17711:33:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 11905, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17748:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "17711:38:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 11913, "nodeType": "IfStatement", "src": "17707:95:71", "trueBody": { "id": 11912, "nodeType": "Block", "src": "17751:51:71", "statements": [ { "expression": { "argumentTypes": null, "id": 11910, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "delete", "prefix": true, "src": "17765:26:71", "subExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11907, "name": "_tokenURIs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11269, "src": "17772:10:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_string_storage_$", "typeString": "mapping(uint256 => string storage ref)" } }, "id": 11909, "indexExpression": { "argumentTypes": null, "id": 11908, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17783:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "17772:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11911, "nodeType": "ExpressionStatement", "src": "17765:26:71" } ] } }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11918, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17840:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11914, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "17812:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11916, "indexExpression": { "argumentTypes": null, "id": 11915, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11876, "src": "17826:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17812:20:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11917, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "remove", "nodeType": "MemberAccess", "referencedDeclaration": 13298, "src": "17812:27:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) returns (bool)" } }, "id": 11919, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17812:36:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11920, "nodeType": "ExpressionStatement", "src": "17812:36:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11924, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17879:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 11921, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "17859:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11923, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "remove", "nodeType": "MemberAccess", "referencedDeclaration": 12832, "src": "17859:19:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256) returns (bool)" } }, "id": 11925, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17859:28:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11926, "nodeType": "ExpressionStatement", "src": "17859:28:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11928, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11876, "src": "17912:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11931, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17927:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11930, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17919:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11929, "name": "address", "nodeType": "ElementaryTypeName", "src": "17919:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11932, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17919:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11933, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17931:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11927, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12165, "src": "17903:8:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11934, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17903:36:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11935, "nodeType": "EmitStatement", "src": "17898:41:71" } ] }, "documentation": { "id": 11870, "nodeType": "StructuredDocumentation", "src": "17269:170:71", "text": "@dev Internal function to burn a specific token.\nReverts if the token does not exist.\n@param tokenId uint256 ID of the token being burned" }, "id": 11937, "implemented": true, "kind": "function", "modifiers": [], "name": "_burn", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11873, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11872, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11937, "src": "17459:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11871, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "17459:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "17458:17:71" }, "returnParameters": { "id": 11874, "nodeType": "ParameterList", "parameters": [], "src": "17493:0:71" }, "scope": 12151, "src": "17444:502:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 12007, "nodeType": "Block", "src": "18402:480:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11952, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11949, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18428:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11948, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11350, "src": "18420:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 11950, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18420:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 11951, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11940, "src": "18440:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "18420:24:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a207472616e73666572206f6620746f6b656e2074686174206973206e6f74206f776e", "id": 11953, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "18446:43:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950", "typeString": "literal_string \"ERC721: transfer of token that is not own\"" }, "value": "ERC721: transfer of token that is not own" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950", "typeString": "literal_string \"ERC721: transfer of token that is not own\"" } ], "id": 11947, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "18412:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11954, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18412:78:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11955, "nodeType": "ExpressionStatement", "src": "18412:78:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11962, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11957, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18508:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11960, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "18522:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11959, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "18514:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11958, "name": "address", "nodeType": "ElementaryTypeName", "src": "18514:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11961, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18514:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "18508:16:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a207472616e7366657220746f20746865207a65726f2061646472657373", "id": 11963, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "18526:38:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4", "typeString": "literal_string \"ERC721: transfer to the zero address\"" }, "value": "ERC721: transfer to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4", "typeString": "literal_string \"ERC721: transfer to the zero address\"" } ], "id": 11956, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "18500:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11964, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18500:65:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11965, "nodeType": "ExpressionStatement", "src": "18500:65:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11967, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11940, "src": "18597:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11968, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18603:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11969, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18607:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11966, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12150, "src": "18576:20:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11970, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18576:39:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11971, "nodeType": "ExpressionStatement", "src": "18576:39:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11975, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "18694:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11974, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "18686:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11973, "name": "address", "nodeType": "ElementaryTypeName", "src": "18686:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11976, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18686:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11977, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18698:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11972, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12139, "src": "18677:8:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 11978, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18677:29:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11979, "nodeType": "ExpressionStatement", "src": "18677:29:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11984, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18744:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11980, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "18717:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11982, "indexExpression": { "argumentTypes": null, "id": 11981, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11940, "src": "18731:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "18717:19:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11983, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "remove", "nodeType": "MemberAccess", "referencedDeclaration": 13298, "src": "18717:26:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) returns (bool)" } }, "id": 11985, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18717:35:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11986, "nodeType": "ExpressionStatement", "src": "18717:35:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11991, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18784:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11987, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "18762:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11989, "indexExpression": { "argumentTypes": null, "id": 11988, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18776:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "18762:17:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11990, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 13278, "src": "18762:21:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) returns (bool)" } }, "id": 11992, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18762:30:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11993, "nodeType": "ExpressionStatement", "src": "18762:30:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11997, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18820:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 11998, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18829:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "id": 11994, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "18803:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11996, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "set", "nodeType": "MemberAccess", "referencedDeclaration": 12812, "src": "18803:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$_t_address_$returns$_t_bool_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256,address) returns (bool)" } }, "id": 11999, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18803:29:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 12000, "nodeType": "ExpressionStatement", "src": "18803:29:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12002, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11940, "src": "18857:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12003, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18863:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12004, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18867:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 12001, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12165, "src": "18848:8:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 12005, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18848:27:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12006, "nodeType": "EmitStatement", "src": "18843:32:71" } ] }, "documentation": { "id": 11938, "nodeType": "StructuredDocumentation", "src": "17952:366:71", "text": "@dev Internal function to transfer ownership of a given token ID to another address.\nAs opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n@param from current owner of the token\n@param to address to receive the ownership of the given token ID\n@param tokenId uint256 ID of the token to be transferred" }, "id": 12008, "implemented": true, "kind": "function", "modifiers": [], "name": "_transfer", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11945, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11940, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12008, "src": "18342:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11939, "name": "address", "nodeType": "ElementaryTypeName", "src": "18342:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11942, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12008, "src": "18356:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11941, "name": "address", "nodeType": "ElementaryTypeName", "src": "18356:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11944, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12008, "src": "18368:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11943, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "18368:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "18341:43:71" }, "returnParameters": { "id": 11946, "nodeType": "ParameterList", "parameters": [], "src": "18402:0:71" }, "scope": 12151, "src": "18323:559:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 12029, "nodeType": "Block", "src": "19296:131:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12018, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12011, "src": "19322:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 12017, "name": "_exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11726, "src": "19314:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_bool_$", "typeString": "function (uint256) view returns (bool)" } }, "id": 12019, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19314:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732314d657461646174613a2055524920736574206f66206e6f6e6578697374656e7420746f6b656e", "id": 12020, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "19332:46:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_94be4a260caaeac1b145f03ffa2e70bc612b64982d04f24073aaf3a5f9009978", "typeString": "literal_string \"ERC721Metadata: URI set of nonexistent token\"" }, "value": "ERC721Metadata: URI set of nonexistent token" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_94be4a260caaeac1b145f03ffa2e70bc612b64982d04f24073aaf3a5f9009978", "typeString": "literal_string \"ERC721Metadata: URI set of nonexistent token\"" } ], "id": 12016, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "19306:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 12021, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19306:73:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12022, "nodeType": "ExpressionStatement", "src": "19306:73:71" }, { "expression": { "argumentTypes": null, "id": 12027, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 12023, "name": "_tokenURIs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11269, "src": "19389:10:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_string_storage_$", "typeString": "mapping(uint256 => string storage ref)" } }, "id": 12025, "indexExpression": { "argumentTypes": null, "id": 12024, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12011, "src": "19400:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "19389:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 12026, "name": "_tokenURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12013, "src": "19411:9:71", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "19389:31:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "id": 12028, "nodeType": "ExpressionStatement", "src": "19389:31:71" } ] }, "documentation": { "id": 12009, "nodeType": "StructuredDocumentation", "src": "18888:322:71", "text": "@dev Internal function to set the token URI for a given token.\n * Reverts if the token ID does not exist.\n * TIP: If all token IDs share a prefix (for example, if your URIs look like\n`https://api.myproject.com/token/`), use {_setBaseURI} to store\nit and save gas." }, "id": 12030, "implemented": true, "kind": "function", "modifiers": [], "name": "_setTokenURI", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12014, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12011, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12030, "src": "19237:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12010, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19237:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12013, "mutability": "mutable", "name": "_tokenURI", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12030, "src": "19254:23:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 12012, "name": "string", "nodeType": "ElementaryTypeName", "src": "19254:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "19236:42:71" }, "returnParameters": { "id": 12015, "nodeType": "ParameterList", "parameters": [], "src": "19296:0:71" }, "scope": 12151, "src": "19215:212:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 12040, "nodeType": "Block", "src": "19712:36:71", "statements": [ { "expression": { "argumentTypes": null, "id": 12038, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 12036, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "19722:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 12037, "name": "baseURI_", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12033, "src": "19733:8:71", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "19722:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "id": 12039, "nodeType": "ExpressionStatement", "src": "19722:19:71" } ] }, "documentation": { "id": 12031, "nodeType": "StructuredDocumentation", "src": "19433:212:71", "text": "@dev Internal function to set the base URI for all token IDs. It is\nautomatically added as a prefix to the value returned in {tokenURI},\nor to the token ID if {tokenURI} is empty." }, "id": 12041, "implemented": true, "kind": "function", "modifiers": [], "name": "_setBaseURI", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12034, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12033, "mutability": "mutable", "name": "baseURI_", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12041, "src": "19671:22:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 12032, "name": "string", "nodeType": "ElementaryTypeName", "src": "19671:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "19670:24:71" }, "returnParameters": { "id": 12035, "nodeType": "ParameterList", "parameters": [], "src": "19712:0:71" }, "scope": 12151, "src": "19650:98:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 12116, "nodeType": "Block", "src": "20431:920:71", "statements": [ { "condition": { "argumentTypes": null, "id": 12058, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "20445:16:71", "subExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 12055, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12046, "src": "20446:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 12056, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isContract", "nodeType": "MemberAccess", "referencedDeclaration": 12358, "src": "20446:13:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$bound_to$_t_address_$", "typeString": "function (address) view returns (bool)" } }, "id": 12057, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20446:15:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 12062, "nodeType": "IfStatement", "src": "20441:58:71", "trueBody": { "id": 12061, "nodeType": "Block", "src": "20463:36:71", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 12059, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "20484:4:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 12054, "id": 12060, "nodeType": "Return", "src": "20477:11:71" } ] } }, { "assignments": [ 12064, 12066 ], "declarations": [ { "constant": false, "id": 12064, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12116, "src": "20568:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12063, "name": "bool", "nodeType": "ElementaryTypeName", "src": "20568:4:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12066, "mutability": "mutable", "name": "returndata", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12116, "src": "20582:23:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 12065, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "20582:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 12083, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12072, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12046, "src": "20669:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 12071, "name": "IERC721Receiver", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12329, "src": "20653:15:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC721Receiver_$12329_$", "typeString": "type(contract IERC721Receiver)" } }, "id": 12073, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20653:19:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721Receiver_$12329", "typeString": "contract IERC721Receiver" } }, "id": 12074, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "onERC721Received", "nodeType": "MemberAccess", "referencedDeclaration": 12328, "src": "20653:36:71", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bytes4_$", "typeString": "function (address,address,uint256,bytes memory) external returns (bytes4)" } }, "id": 12075, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "20653:45:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 12076, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10740, "src": "20712:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 12077, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20712:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 12078, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12044, "src": "20738:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12079, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12048, "src": "20756:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 12080, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12050, "src": "20777:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "id": 12069, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "20617:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12070, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "20617:22:71", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 12081, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20617:175:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "id": 12067, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12046, "src": "20609:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 12068, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "20609:7:71", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 12082, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20609:184:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "20567:226:71" }, { "condition": { "argumentTypes": null, "id": 12085, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "20807:8:71", "subExpression": { "argumentTypes": null, "id": 12084, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12064, "src": "20808:7:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 12114, "nodeType": "Block", "src": "21223:122:71", "statements": [ { "assignments": [ 12100 ], "declarations": [ { "constant": false, "id": 12100, "mutability": "mutable", "name": "retval", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12114, "src": "21237:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 12099, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "21237:6:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": null, "visibility": "internal" } ], "id": 12108, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12103, "name": "returndata", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12066, "src": "21264:10:71", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "components": [ { "argumentTypes": null, "id": 12105, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "21277:6:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes4_$", "typeString": "type(bytes4)" }, "typeName": { "id": 12104, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "21277:6:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } } ], "id": 12106, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "21276:8:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes4_$", "typeString": "type(bytes4)" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_type$_t_bytes4_$", "typeString": "type(bytes4)" } ], "expression": { "argumentTypes": null, "id": 12101, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "21253:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12102, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "decode", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "21253:10:71", "typeDescriptions": { "typeIdentifier": "t_function_abidecode_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 12107, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21253:32:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "VariableDeclarationStatement", "src": "21237:48:71" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "id": 12111, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 12109, "name": "retval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12100, "src": "21307:6:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 12110, "name": "_ERC721_RECEIVED", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11245, "src": "21317:16:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "src": "21307:26:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 12112, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "21306:28:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 12054, "id": 12113, "nodeType": "Return", "src": "21299:35:71" } ] }, "id": 12115, "nodeType": "IfStatement", "src": "20803:542:71", "trueBody": { "id": 12098, "nodeType": "Block", "src": "20817:400:71", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 12089, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 12086, "name": "returndata", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12066, "src": "20835:10:71", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 12087, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "20835:17:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 12088, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20855:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "20835:21:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 12096, "nodeType": "Block", "src": "21114:93:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 12093, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "21139:52:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 12092, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ -19, -19 ], "referencedDeclaration": -19, "src": "21132:6:71", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 12094, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21132:60:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12095, "nodeType": "ExpressionStatement", "src": "21132:60:71" } ] }, "id": 12097, "nodeType": "IfStatement", "src": "20831:376:71", "trueBody": { "id": 12091, "nodeType": "Block", "src": "20858:250:71", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "20949:145:71", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "20971:40:71", "value": { "arguments": [ { "name": "returndata", "nodeType": "YulIdentifier", "src": "21000:10:71" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "20994:5:71" }, "nodeType": "YulFunctionCall", "src": "20994:17:71" }, "variables": [ { "name": "returndata_size", "nodeType": "YulTypedName", "src": "20975:15:71", "type": "" } ] }, { "expression": { "arguments": [ { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "21043:2:71", "type": "", "value": "32" }, { "name": "returndata", "nodeType": "YulIdentifier", "src": "21047:10:71" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "21039:3:71" }, "nodeType": "YulFunctionCall", "src": "21039:19:71" }, { "name": "returndata_size", "nodeType": "YulIdentifier", "src": "21060:15:71" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "21032:6:71" }, "nodeType": "YulFunctionCall", "src": "21032:44:71" }, "nodeType": "YulExpressionStatement", "src": "21032:44:71" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 12066, "isOffset": false, "isSlot": false, "src": "21000:10:71", "valueSize": 1 }, { "declaration": 12066, "isOffset": false, "isSlot": false, "src": "21047:10:71", "valueSize": 1 } ], "id": 12090, "nodeType": "InlineAssembly", "src": "20940:154:71" } ] } } ] } } ] }, "documentation": { "id": 12042, "nodeType": "StructuredDocumentation", "src": "19754:542:71", "text": "@dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\nThe call is not executed if the target address is not a contract.\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" }, "id": 12117, "implemented": true, "kind": "function", "modifiers": [], "name": "_checkOnERC721Received", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12051, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12044, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20333:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12043, "name": "address", "nodeType": "ElementaryTypeName", "src": "20333:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12046, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20347:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12045, "name": "address", "nodeType": "ElementaryTypeName", "src": "20347:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12048, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20359:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12047, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "20359:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12050, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20376:18:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 12049, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "20376:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "20332:63:71" }, "returnParameters": { "id": 12054, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12053, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20421:4:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12052, "name": "bool", "nodeType": "ElementaryTypeName", "src": "20421:4:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "20420:6:71" }, "scope": 12151, "src": "20301:1050:71", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 12138, "nodeType": "Block", "src": "21412:100:71", "statements": [ { "expression": { "argumentTypes": null, "id": 12128, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 12124, "name": "_tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11255, "src": "21422:15:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 12126, "indexExpression": { "argumentTypes": null, "id": 12125, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12121, "src": "21438:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "21422:24:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 12127, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12119, "src": "21449:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "21422:29:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 12129, "nodeType": "ExpressionStatement", "src": "21422:29:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12132, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12121, "src": "21483:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 12131, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11350, "src": "21475:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 12133, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21475:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12134, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12119, "src": "21493:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12135, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12121, "src": "21497:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 12130, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12173, "src": "21466:8:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 12136, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21466:39:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12137, "nodeType": "EmitStatement", "src": "21461:44:71" } ] }, "documentation": null, "id": 12139, "implemented": true, "kind": "function", "modifiers": [], "name": "_approve", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12122, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12119, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12139, "src": "21375:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12118, "name": "address", "nodeType": "ElementaryTypeName", "src": "21375:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12121, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12139, "src": "21387:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12120, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "21387:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "21374:29:71" }, "returnParameters": { "id": 12123, "nodeType": "ParameterList", "parameters": [], "src": "21412:0:71" }, "scope": 12151, "src": "21357:155:71", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 12149, "nodeType": "Block", "src": "22158:3:71", "statements": [] }, "documentation": { "id": 12140, "nodeType": "StructuredDocumentation", "src": "21518:545:71", "text": "@dev Hook that is called before any token transfer. This includes minting\nand burning.\n * Calling conditions:\n * - when `from` and `to` are both non-zero, ``from``'s `tokenId` will be\ntransferred 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` and `to` are never both zero.\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]." }, "id": 12150, "implemented": true, "kind": "function", "modifiers": [], "name": "_beforeTokenTransfer", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12147, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12142, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12150, "src": "22098:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12141, "name": "address", "nodeType": "ElementaryTypeName", "src": "22098:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12144, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12150, "src": "22112:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12143, "name": "address", "nodeType": "ElementaryTypeName", "src": "22112:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12146, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12150, "src": "22124:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12145, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "22124:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "22097:43:71" }, "returnParameters": { "id": 12148, "nodeType": "ParameterList", "parameters": [], "src": "22158:0:71" }, "scope": 12151, "src": "22068:93:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" } ], "scope": 12152, "src": "528:21635:71" } ], "src": "0:22164:71" }, "legacyAST": { "absolutePath": "@openzeppelin/contracts/token/ERC721/ERC721.sol", "exportedSymbols": { "ERC721": [ 12151 ] }, "id": 12152, "nodeType": "SourceUnit", "nodes": [ { "id": 11205, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:71" }, { "absolutePath": "@openzeppelin/contracts/GSN/Context.sol", "file": "../../GSN/Context.sol", "id": 11206, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 10753, "src": "25:31:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721.sol", "file": "./IERC721.sol", "id": 11207, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12260, "src": "57:23:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721Metadata.sol", "file": "./IERC721Metadata.sol", "id": 11208, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12312, "src": "81:31:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721Enumerable.sol", "file": "./IERC721Enumerable.sol", "id": 11209, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12288, "src": "113:33:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol", "file": "./IERC721Receiver.sol", "id": 11210, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12330, "src": "147:31:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/introspection/ERC165.sol", "file": "../../introspection/ERC165.sol", "id": 11211, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 10918, "src": "179:40:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 11212, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 11126, "src": "220:33:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Address.sol", "file": "../../utils/Address.sol", "id": 11213, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12394, "src": "254:33:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/EnumerableSet.sol", "file": "../../utils/EnumerableSet.sol", "id": 11214, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 13354, "src": "288:39:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/EnumerableMap.sol", "file": "../../utils/EnumerableMap.sol", "id": 11215, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 12959, "src": "328:39:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Strings.sol", "file": "../../utils/Strings.sol", "id": 11216, "nodeType": "ImportDirective", "scope": 12152, "sourceUnit": 13441, "src": "368:33:71", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 11218, "name": "Context", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10752, "src": "547:7:71", "typeDescriptions": { "typeIdentifier": "t_contract$_Context_$10752", "typeString": "contract Context" } }, "id": 11219, "nodeType": "InheritanceSpecifier", "src": "547:7:71" }, { "arguments": null, "baseName": { "contractScope": null, "id": 11220, "name": "ERC165", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 10917, "src": "556:6:71", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC165_$10917", "typeString": "contract ERC165" } }, "id": 11221, "nodeType": "InheritanceSpecifier", "src": "556:6:71" }, { "arguments": null, "baseName": { "contractScope": null, "id": 11222, "name": "IERC721", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12259, "src": "564:7:71", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721_$12259", "typeString": "contract IERC721" } }, "id": 11223, "nodeType": "InheritanceSpecifier", "src": "564:7:71" }, { "arguments": null, "baseName": { "contractScope": null, "id": 11224, "name": "IERC721Metadata", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12311, "src": "573:15:71", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721Metadata_$12311", "typeString": "contract IERC721Metadata" } }, "id": 11225, "nodeType": "InheritanceSpecifier", "src": "573:15:71" }, { "arguments": null, "baseName": { "contractScope": null, "id": 11226, "name": "IERC721Enumerable", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12287, "src": "590:17:71", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721Enumerable_$12287", "typeString": "contract IERC721Enumerable" } }, "id": 11227, "nodeType": "InheritanceSpecifier", "src": "590:17:71" } ], "contractDependencies": [ 10752, 10917, 10929, 12259, 12287, 12311 ], "contractKind": "contract", "documentation": { "id": 11217, "nodeType": "StructuredDocumentation", "src": "403:124:71", "text": "@title ERC721 Non-Fungible Token Standard basic implementation\n@dev see https://eips.ethereum.org/EIPS/eip-721" }, "fullyImplemented": true, "id": 12151, "linearizedBaseContracts": [ 12151, 12287, 12311, 12259, 10917, 10929, 10752 ], "name": "ERC721", "nodeType": "ContractDefinition", "nodes": [ { "id": 11230, "libraryName": { "contractScope": null, "id": 11228, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 11125, "src": "620:8:71", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$11125", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "614:27:71", "typeName": { "id": 11229, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "633:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 11233, "libraryName": { "contractScope": null, "id": 11231, "name": "Address", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12393, "src": "652:7:71", "typeDescriptions": { "typeIdentifier": "t_contract$_Address_$12393", "typeString": "library Address" } }, "nodeType": "UsingForDirective", "src": "646:26:71", "typeName": { "id": 11232, "name": "address", "nodeType": "ElementaryTypeName", "src": "664:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "id": 11236, "libraryName": { "contractScope": null, "id": 11234, "name": "EnumerableSet", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 13353, "src": "683:13:71", "typeDescriptions": { "typeIdentifier": "t_contract$_EnumerableSet_$13353", "typeString": "library EnumerableSet" } }, "nodeType": "UsingForDirective", "src": "677:46:71", "typeName": { "contractScope": null, "id": 11235, "name": "EnumerableSet.UintSet", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 13258, "src": "701:21:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage_ptr", "typeString": "struct EnumerableSet.UintSet" } } }, { "id": 11239, "libraryName": { "contractScope": null, "id": 11237, "name": "EnumerableMap", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12958, "src": "734:13:71", "typeDescriptions": { "typeIdentifier": "t_contract$_EnumerableMap_$12958", "typeString": "library EnumerableMap" } }, "nodeType": "UsingForDirective", "src": "728:55:71", "typeName": { "contractScope": null, "id": 11238, "name": "EnumerableMap.UintToAddressMap", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12783, "src": "752:30:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage_ptr", "typeString": "struct EnumerableMap.UintToAddressMap" } } }, { "id": 11242, "libraryName": { "contractScope": null, "id": 11240, "name": "Strings", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 13440, "src": "794:7:71", "typeDescriptions": { "typeIdentifier": "t_contract$_Strings_$13440", "typeString": "library Strings" } }, "nodeType": "UsingForDirective", "src": "788:26:71", "typeName": { "id": 11241, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "806:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": true, "id": 11245, "mutability": "constant", "name": "_ERC721_RECEIVED", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12151, "src": "992:53:71", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 11243, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "992:6:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": { "argumentTypes": null, "hexValue": "30783135306237613032", "id": 11244, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1035:10:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_353073666_by_1", "typeString": "int_const 353073666" }, "value": "0x150b7a02" }, "visibility": "private" }, { "constant": false, "id": 11249, "mutability": "mutable", "name": "_holderTokens", "nodeType": "VariableDeclaration", 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}, "value": null, "visibility": "private" }, { "constant": false, "id": 11251, "mutability": "mutable", "name": "_tokenOwners", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12151, "src": "1257:51:71", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap" }, "typeName": { "contractScope": null, "id": 11250, "name": "EnumerableMap.UintToAddressMap", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12783, "src": "1257:30:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage_ptr", "typeString": "struct EnumerableMap.UintToAddressMap" } }, "value": null, "visibility": "private" }, { "constant": false, "id": 11255, "mutability": "mutable", "name": "_tokenApprovals", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12151, "src": "1364:52:71", "stateVariable": true, 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"overloadedDeclarations": [], "referencedDeclaration": 11337, "src": "4525:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "4552433732313a206f776e657220717565727920666f72206e6f6e6578697374656e7420746f6b656e", "id": 11346, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4534:43:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_7481f3df2a424c0755a1ad2356614e9a5a358d461ea2eae1f89cb21cbad00397", "typeString": "literal_string \"ERC721: owner query for nonexistent token\"" }, "value": "ERC721: owner query for nonexistent token" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_7481f3df2a424c0755a1ad2356614e9a5a358d461ea2eae1f89cb21cbad00397", "typeString": "literal_string \"ERC721: owner query for nonexistent token\"" } ], "expression": { "argumentTypes": null, "id": 11343, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "4508:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11344, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "get", "nodeType": "MemberAccess", "referencedDeclaration": 12957, "src": "4508:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$_t_string_memory_ptr_$returns$_t_address_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256,string memory) view returns (address)" } }, "id": 11347, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4508:70:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 11342, "id": 11348, "nodeType": "Return", "src": "4501:77:71" } ] }, "documentation": { "id": 11335, "nodeType": "StructuredDocumentation", "src": "4205:208:71", "text": "@dev Gets the owner of the specified token ID.\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" }, "functionSelector": "6352211e", "id": 11350, "implemented": true, "kind": "function", "modifiers": [], "name": "ownerOf", "nodeType": "FunctionDefinition", "overrides": { "id": 11339, "nodeType": "OverrideSpecifier", "overrides": [], "src": "4464:8:71" }, "parameters": { "id": 11338, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11337, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11350, "src": "4435:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11336, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4435:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "4434:17:71" }, "returnParameters": { "id": 11342, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11341, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11350, "src": "4482:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11340, "name": "address", "nodeType": "ElementaryTypeName", "src": "4482:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "4481:9:71" }, "scope": 12151, "src": "4418:167:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12298 ], "body": { "id": 11359, "nodeType": "Block", "src": "4751:29:71", "statements": [ { "expression": { "argumentTypes": null, "id": 11357, "name": "_name", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11263, "src": "4768:5:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "functionReturnParameters": 11356, "id": 11358, "nodeType": "Return", "src": "4761:12:71" } ] }, "documentation": { "id": 11351, "nodeType": "StructuredDocumentation", "src": "4591:94:71", "text": "@dev Gets the token name.\n@return string representing the token name" }, "functionSelector": "06fdde03", "id": 11360, "implemented": true, "kind": "function", "modifiers": [], "name": "name", "nodeType": "FunctionDefinition", "overrides": { "id": 11353, "nodeType": "OverrideSpecifier", "overrides": [], "src": "4718:8:71" }, "parameters": { "id": 11352, "nodeType": "ParameterList", "parameters": [], "src": "4703:2:71" }, "returnParameters": { "id": 11356, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11355, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11360, "src": "4736:13:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 11354, "name": "string", "nodeType": "ElementaryTypeName", "src": "4736:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "4735:15:71" }, "scope": 12151, "src": "4690:90:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12303 ], "body": { "id": 11369, "nodeType": "Block", "src": "4952:31:71", "statements": [ { "expression": { "argumentTypes": null, "id": 11367, "name": "_symbol", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11265, "src": "4969:7:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "functionReturnParameters": 11366, "id": 11368, "nodeType": "Return", "src": "4962:14:71" } ] }, "documentation": { "id": 11361, "nodeType": "StructuredDocumentation", "src": "4786:98:71", "text": "@dev Gets the token symbol.\n@return string representing the token symbol" }, "functionSelector": "95d89b41", "id": 11370, "implemented": true, "kind": "function", "modifiers": [], "name": "symbol", "nodeType": "FunctionDefinition", "overrides": { "id": 11363, "nodeType": "OverrideSpecifier", "overrides": [], "src": "4919:8:71" }, "parameters": { "id": 11362, "nodeType": 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"4552433732314d657461646174613a2055524920717565727920666f72206e6f6e6578697374656e7420746f6b656e", "id": 11383, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5942:49:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_a2d45c0fba603d40d82d590051761ca952d1ab9d78cca6d0d464d7b6e961a9cb", "typeString": "literal_string \"ERC721Metadata: URI query for nonexistent token\"" }, "value": "ERC721Metadata: URI query for nonexistent token" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_a2d45c0fba603d40d82d590051761ca952d1ab9d78cca6d0d464d7b6e961a9cb", "typeString": "literal_string \"ERC721Metadata: URI query for nonexistent token\"" } ], "id": 11379, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "5916:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11384, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5916:76:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11385, "nodeType": "ExpressionStatement", "src": "5916:76:71" }, { "assignments": [ 11387 ], "declarations": [ { "constant": false, "id": 11387, "mutability": "mutable", "name": "_tokenURI", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11432, "src": "6003:23:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 11386, "name": "string", "nodeType": "ElementaryTypeName", "src": "6003:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "id": 11391, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11388, "name": "_tokenURIs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11269, "src": "6029:10:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_string_storage_$", "typeString": "mapping(uint256 => string storage ref)" } }, "id": 11390, "indexExpression": { "argumentTypes": null, "id": 11389, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11373, "src": "6040:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "6029:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "VariableDeclarationStatement", "src": "6003:45:71" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11398, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11394, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "6127:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } ], "id": 11393, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6121:5:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes_storage_ptr_$", "typeString": "type(bytes storage pointer)" }, "typeName": { "id": 11392, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6121:5:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11395, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6121:15:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes storage pointer" } }, "id": 11396, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "6121:22:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 11397, "isConstant": false, "isLValue": false, "isPure": true, "kind": 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false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11405, "name": "_tokenURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11387, "src": "6299:9:71", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } ], "id": 11404, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6293:5:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes_storage_ptr_$", "typeString": "type(bytes storage pointer)" }, "typeName": { "id": 11403, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6293:5:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11406, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6293:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 11407, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "6293:23:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 11408, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6319:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "6293:27:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 11420, "nodeType": "IfStatement", "src": "6289:110:71", "trueBody": { "id": 11419, "nodeType": "Block", "src": "6322:77:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11414, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "6367:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, { "argumentTypes": null, "id": 11415, "name": "_tokenURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11387, "src": "6377:9:71", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } ], "expression": { "argumentTypes": null, "id": 11412, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "6350:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 11413, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "6350:16:71", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 11416, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6350:37:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 11411, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6343:6:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 11410, "name": "string", "nodeType": "ElementaryTypeName", "src": "6343:6:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11417, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6343:45:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 11378, "id": 11418, "nodeType": "Return", "src": "6336:52:71" } ] } }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11425, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "6529:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 11426, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11373, "src": "6539:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 11427, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "toString", "nodeType": "MemberAccess", "referencedDeclaration": 13439, "src": "6539:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$returns$_t_string_memory_ptr_$bound_to$_t_uint256_$", "typeString": "function (uint256) pure returns (string memory)" } }, "id": 11428, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6539:18:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } ], "expression": { "argumentTypes": null, "id": 11423, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "6512:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 11424, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "6512:16:71", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 11429, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6512:46:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 11422, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6505:6:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 11421, "name": "string", "nodeType": "ElementaryTypeName", "src": "6505:6:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11430, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6505:54:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 11378, "id": 11431, "nodeType": "Return", "src": "6498:61:71" } ] }, "documentation": { "id": 11371, "nodeType": "StructuredDocumentation", "src": "4989:832:71", "text": "@dev Returns the URI for a given token ID. May return an empty string.\n * If a base URI is set (via {_setBaseURI}), it is added as a prefix to the\ntoken's own URI (via {_setTokenURI}).\n * If there is a base URI but no token URI, the token's ID will be used as\nits URI when appending it to the base URI. This pattern for autogenerated\ntoken URIs can lead to large gas savings.\n * .Examples\n|===\n|`_setBaseURI()` |`_setTokenURI()` |`tokenURI()`\n| \"\"\n| \"\"\n| \"\"\n| \"\"\n| \"token.uri/123\"\n| \"token.uri/123\"\n| \"token.uri/\"\n| \"123\"\n| \"token.uri/123\"\n| \"token.uri/\"\n| \"\"\n| \"token.uri/\"\n|===\n * Requirements:\n * - `tokenId` must exist." }, "functionSelector": "c87b56dd", "id": 11433, "implemented": true, "kind": "function", "modifiers": [], "name": "tokenURI", "nodeType": "FunctionDefinition", "overrides": { "id": 11375, "nodeType": "OverrideSpecifier", "overrides": [], "src": "5873:8:71" }, "parameters": { "id": 11374, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11373, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11433, "src": "5844:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11372, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5844:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "5843:17:71" }, "returnParameters": { "id": 11378, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11377, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11433, "src": "5891:13:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 11376, "name": "string", "nodeType": "ElementaryTypeName", "src": "5891:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "5890:15:71" }, "scope": 12151, "src": "5826:740:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "body": { "id": 11441, "nodeType": "Block", "src": "6853:32:71", "statements": [ { "expression": { "argumentTypes": null, "id": 11439, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "6870:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "functionReturnParameters": 11438, "id": 11440, "nodeType": "Return", "src": "6863:15:71" } ] }, "documentation": { "id": 11434, "nodeType": "StructuredDocumentation", "src": "6572:221:71", "text": "@dev Returns the base URI set via {_setBaseURI}. This will be\nautomatically added as a prefix in {tokenURI} to each token's URI, or\nto the token ID if no specific URI is set for that token ID." }, "functionSelector": "6c0360eb", "id": 11442, "implemented": true, "kind": "function", "modifiers": [], "name": "baseURI", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11435, "nodeType": "ParameterList", "parameters": [], "src": "6814:2:71" }, "returnParameters": { "id": 11438, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11437, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11442, "src": "6838:13:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 11436, "name": "string", "nodeType": "ElementaryTypeName", "src": "6838:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "6837:15:71" }, "scope": 12151, "src": "6798:87:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12279 ], "body": { "id": 11460, "nodeType": "Block", "src": "7357:54:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11457, "name": "index", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11447, "src": "7398:5:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11453, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "7374:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11455, "indexExpression": { "argumentTypes": null, "id": 11454, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11445, "src": "7388:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7374:20:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11456, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "at", "nodeType": "MemberAccess", "referencedDeclaration": 13352, "src": "7374:23:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_uint256_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) view returns (uint256)" } }, "id": 11458, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7374:30:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 11452, "id": 11459, "nodeType": "Return", "src": "7367:37:71" } ] }, "documentation": { "id": 11443, "nodeType": "StructuredDocumentation", "src": "6891:363:71", "text": "@dev Gets the token ID at a given index of the tokens list of the requested owner.\n@param owner address owning the tokens list to be accessed\n@param index uint256 representing the index to be accessed of the requested tokens list\n@return uint256 token ID at the given index of the tokens list owned by the requested address" }, "functionSelector": "2f745c59", "id": 11461, "implemented": true, "kind": "function", "modifiers": [], "name": "tokenOfOwnerByIndex", "nodeType": "FunctionDefinition", "overrides": { "id": 11449, "nodeType": "OverrideSpecifier", "overrides": [], "src": "7330:8:71" }, "parameters": { "id": 11448, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11445, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11461, "src": "7288:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11444, "name": "address", "nodeType": "ElementaryTypeName", "src": "7288:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11447, "mutability": "mutable", "name": "index", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11461, "src": "7303:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11446, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7303:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7287:30:71" }, "returnParameters": { "id": 11452, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11451, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11461, "src": "7348:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11450, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7348:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7347:9:71" }, "scope": 12151, "src": "7259:152:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12270 ], "body": { "id": 11472, "nodeType": "Block", "src": "7626:138:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 11468, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "7736:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11469, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": 12866, "src": "7736:19:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_UintToAddressMap_$12783_storage_ptr_$returns$_t_uint256_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer) view returns (uint256)" } }, "id": 11470, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7736:21:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 11467, "id": 11471, "nodeType": "Return", "src": "7729:28:71" } ] }, "documentation": { "id": 11462, "nodeType": "StructuredDocumentation", "src": "7417:142:71", "text": "@dev Gets the total amount of tokens stored by the contract.\n@return uint256 representing the total amount of tokens" }, "functionSelector": "18160ddd", "id": 11473, "implemented": true, "kind": "function", "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "overrides": { "id": 11464, "nodeType": "OverrideSpecifier", "overrides": [], "src": "7599:8:71" }, "parameters": { "id": 11463, "nodeType": "ParameterList", "parameters": [], "src": "7584:2:71" }, "returnParameters": { "id": 11467, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11466, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11473, "src": "7617:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11465, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7617:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7616:9:71" }, "scope": 12151, "src": "7564:200:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12286 ], "body": { "id": 11491, "nodeType": "Block", "src": "8178:85:71", "statements": [ { "assignments": [ 11483, null ], "declarations": [ { "constant": false, "id": 11483, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11491, "src": "8189:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11482, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8189:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, null ], "id": 11488, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11486, "name": "index", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11476, "src": "8226:5:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 11484, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "8210:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11485, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "at", "nodeType": "MemberAccess", "referencedDeclaration": 12902, "src": "8210:15:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$returns$_t_uint256_$_t_address_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256) view returns (uint256,address)" } }, "id": 11487, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8210:22:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_uint256_$_t_address_$", "typeString": "tuple(uint256,address)" } }, "nodeType": "VariableDeclarationStatement", "src": "8188:44:71" }, { "expression": { "argumentTypes": null, "id": 11489, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11483, "src": "8249:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 11481, "id": 11490, "nodeType": "Return", "src": "8242:14:71" } ] }, "documentation": { "id": 11474, "nodeType": "StructuredDocumentation", "src": "7770:327:71", "text": "@dev Gets the token ID at a given index of all the tokens in this contract\nReverts if the index is greater or equal to the total number of tokens.\n@param index uint256 representing the index to be accessed of the tokens list\n@return uint256 token ID at the given index of the tokens list" }, "functionSelector": "4f6ccce7", "id": 11492, "implemented": true, "kind": "function", "modifiers": [], "name": "tokenByIndex", "nodeType": "FunctionDefinition", "overrides": { "id": 11478, "nodeType": "OverrideSpecifier", "overrides": [], "src": "8151:8:71" }, "parameters": { "id": 11477, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11476, "mutability": "mutable", "name": "index", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11492, "src": "8124:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11475, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8124:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8123:15:71" }, "returnParameters": { "id": 11481, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11480, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11492, "src": "8169:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11479, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8169:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8168:9:71" }, "scope": 12151, "src": "8102:161:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12224 ], "body": { "id": 11533, "nodeType": "Block", "src": "8754:311:71", "statements": [ { "assignments": [ 11502 ], "declarations": [ { "constant": false, "id": 11502, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11533, "src": "8764:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11501, "name": "address", "nodeType": "ElementaryTypeName", "src": "8764:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 11506, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11504, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11497, "src": "8788:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11503, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11350, "src": "8780:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 11505, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8780:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "8764:32:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11510, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11508, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11495, "src": "8814:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 11509, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11502, "src": "8820:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8814:11:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a20617070726f76616c20746f2063757272656e74206f776e6572", "id": 11511, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8827:35:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_b51b4875eede07862961e8f9365c6749f5fe55c6ee5d7a9e42b6912ad0b15942", "typeString": "literal_string \"ERC721: approval to current owner\"" }, "value": "ERC721: approval to current owner" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_b51b4875eede07862961e8f9365c6749f5fe55c6ee5d7a9e42b6912ad0b15942", "typeString": "literal_string \"ERC721: approval to current owner\"" } ], "id": 11507, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "8806:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11512, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8806:57:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11513, "nodeType": "ExpressionStatement", "src": "8806:57:71" }, { 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\"ERC721: approve caller is not owner nor approved for all\"" }, "value": "ERC721: approve caller is not owner nor approved for all" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_6d83cef3e0cb19b8320a9c5feb26b56bbb08f152a8e61b12eca3302d8d68b23d", "typeString": "literal_string \"ERC721: approve caller is not owner nor approved for all\"" } ], "id": 11514, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "8874:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11526, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8874:152:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", 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"implemented": true, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "overrides": { "id": 11499, "nodeType": "OverrideSpecifier", "overrides": [], "src": "8745:8:71" }, "parameters": { "id": 11498, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11495, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11534, "src": "8701:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11494, "name": "address", "nodeType": "ElementaryTypeName", "src": "8701:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11497, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11534, "src": 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false, "nodeType": "IndexAccess", "src": "9528:24:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 11542, "id": 11553, "nodeType": "Return", "src": "9521:31:71" } ] }, "documentation": { "id": 11535, "nodeType": "StructuredDocumentation", "src": "9071:274:71", "text": "@dev Gets the approved address for a token ID, or zero if no address set\nReverts if the token ID does not exist.\n@param tokenId uint256 ID of the token to query the approval of\n@return address currently approved for the given token ID" }, "functionSelector": "081812fc", "id": 11555, "implemented": true, "kind": "function", "modifiers": [], "name": "getApproved", "nodeType": "FunctionDefinition", "overrides": { "id": 11539, "nodeType": "OverrideSpecifier", "overrides": [], "src": "9400:8:71" }, "parameters": { "id": 11538, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11537, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11555, "src": "9371:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11536, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9371:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "9370:17:71" }, "returnParameters": { "id": 11542, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11541, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11555, "src": "9418:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11540, "name": "address", "nodeType": "ElementaryTypeName", "src": "9418:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "9417:9:71" }, "scope": 12151, "src": "9350:209:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 12238 ], "body": { "id": 11588, "nodeType": "Block", "src": "9942:206:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11568, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11565, "name": "operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11558, "src": "9960:8:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11566, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10740, "src": "9972:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11567, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9972:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "9960:24:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a20617070726f766520746f2063616c6c6572", "id": 11569, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9986:27:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_45fe4329685be5ecd250fd0e6a25aea0ea4d0e30fb6a73c118b95749e6d70d05", "typeString": "literal_string \"ERC721: approve to caller\"" }, "value": "ERC721: approve to caller" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_45fe4329685be5ecd250fd0e6a25aea0ea4d0e30fb6a73c118b95749e6d70d05", "typeString": "literal_string \"ERC721: approve to caller\"" } ], "id": 11564, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "9952:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11570, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9952:62:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11571, "nodeType": "ExpressionStatement", "src": "9952:62:71" }, { "expression": { "argumentTypes": null, "id": 11579, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11572, "name": "_operatorApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "10025:18:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" } }, "id": 11576, "indexExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11573, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10740, "src": "10044:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11574, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10044:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10025:32:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" } }, "id": 11577, "indexExpression": { "argumentTypes": null, "id": 11575, "name": "operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11558, "src": "10058:8:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10025:42:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 11578, "name": "approved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11560, "src": "10070:8:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "10025:53:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11580, "nodeType": "ExpressionStatement", "src": "10025:53:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11582, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10740, "src": "10108:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11583, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10108:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11584, "name": "operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11558, "src": "10122:8:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11585, "name": "approved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11560, "src": "10132:8:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 11581, "name": "ApprovalForAll", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12181, "src": "10093:14:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_bool_$returns$__$", "typeString": "function (address,address,bool)" } }, "id": 11586, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10093:48:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11587, "nodeType": "EmitStatement", "src": "10088:53:71" } ] }, "documentation": { "id": 11556, "nodeType": "StructuredDocumentation", "src": "9565:288:71", "text": "@dev Sets or unsets the approval of a given operator\nAn operator is allowed to transfer all tokens of the sender on their behalf.\n@param operator operator address to set the approval\n@param approved representing the status of the approval to be set" }, "functionSelector": "a22cb465", "id": 11589, "implemented": true, "kind": "function", "modifiers": [], "name": "setApprovalForAll", "nodeType": "FunctionDefinition", "overrides": { "id": 11562, "nodeType": "OverrideSpecifier", "overrides": [], "src": "9933:8:71" }, "parameters": { "id": 11561, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11558, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11589, "src": "9885:16:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11557, "name": "address", "nodeType": "ElementaryTypeName", "src": "9885:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11560, "mutability": "mutable", "name": "approved", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11589, "src": "9903:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11559, "name": "bool", "nodeType": "ElementaryTypeName", "src": "9903:4:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "9884:33:71" }, "returnParameters": { "id": 11563, "nodeType": "ParameterList", "parameters": [], "src": "9942:0:71" }, "scope": 12151, "src": "9858:290:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" }, { "baseFunctions": [ 12247 ], "body": { "id": 11606, "nodeType": "Block", "src": "10565:59:71", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11600, "name": "_operatorApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11261, "src": "10582:18:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" } }, "id": 11602, "indexExpression": { "argumentTypes": null, "id": 11601, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11592, "src": "10601:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10582:25:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" } }, "id": 11604, "indexExpression": { "argumentTypes": null, "id": 11603, "name": "operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11594, "src": "10608:8:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "10582:35:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 11599, "id": 11605, "nodeType": "Return", "src": "10575:42:71" } ] }, "documentation": { "id": 11590, "nodeType": "StructuredDocumentation", "src": "10154:311:71", "text": "@dev Tells whether an operator is approved by a given owner.\n@param owner owner address which you want to query the approval of\n@param operator operator address which you want to query the approval of\n@return bool whether the given operator is approved by the given owner" }, "functionSelector": "e985e9c5", "id": 11607, "implemented": true, "kind": "function", "modifiers": [], "name": "isApprovedForAll", "nodeType": "FunctionDefinition", "overrides": { "id": 11596, "nodeType": "OverrideSpecifier", "overrides": [], "src": "10541:8:71" }, "parameters": { "id": 11595, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11592, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11607, "src": "10496:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11591, "name": "address", "nodeType": "ElementaryTypeName", "src": "10496:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11594, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 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11618, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "11212:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11625, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11212:103:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11626, "nodeType": "ExpressionStatement", "src": "11212:103:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11628, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11610, "src": "11336:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11629, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11612, "src": "11342:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11630, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11614, "src": "11346:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11627, "name": "_transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12008, "src": "11326:9:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11631, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11326:28:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11632, "nodeType": "ExpressionStatement", "src": "11326:28:71" } ] }, "documentation": { "id": 11608, "nodeType": "StructuredDocumentation", "src": "10630:426:71", "text": "@dev Transfers the ownership of a given token ID to another address.\nUsage of this method is discouraged, use {safeTransferFrom} whenever possible.\nRequires the msg.sender to be the owner, approved, or operator.\n@param from current owner of the token\n@param to address to receive the ownership of the given token ID\n@param tokenId uint256 ID of the token to be transferred" }, "functionSelector": "23b872dd", "id": 11634, "implemented": true, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": 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"typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11611, "name": "address", "nodeType": "ElementaryTypeName", "src": "11097:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11614, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11634, "src": "11109:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11613, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11109:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "11082:43:71" }, "returnParameters": { "id": 11617, "nodeType": "ParameterList", "parameters": [], "src": "11150:0:71" }, "scope": 12151, "src": 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"t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (address,address,uint256,bytes memory)" } }, "id": 11650, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12113:39:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11651, "nodeType": "ExpressionStatement", "src": "12113:39:71" } ] }, "documentation": { "id": 11635, "nodeType": "StructuredDocumentation", "src": "11367:638:71", "text": "@dev Safely transfers the ownership of a given token ID to another address\nIf the target address is a contract, it must implement {IERC721Receiver-onERC721Received},\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\nRequires the msg.sender to be the owner, approved, or operator\n@param from current owner of the token\n@param to address to receive the ownership of the given token ID\n@param tokenId uint256 ID of the token to be transferred" }, "functionSelector": "42842e0e", "id": 11653, "implemented": true, "kind": "function", "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "overrides": { "id": 11643, "nodeType": "OverrideSpecifier", "overrides": [], "src": "12094:8:71" }, "parameters": { "id": 11642, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11637, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11653, "src": "12036:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11636, "name": "address", "nodeType": "ElementaryTypeName", "src": "12036:7:71", "stateMutability": "nonpayable", 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"isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15011:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "14995:32:71" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 11762, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 11757, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11751, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11749, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11729, "src": "15045:7:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 11750, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "15056:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "15045:16:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11756, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11753, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11731, "src": "15077:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11752, "name": "getApproved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11555, "src": "15065:11:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 11754, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15065:20:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 11755, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11729, "src": "15089:7:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "15065:31:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "15045:51:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11759, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11744, "src": "15117:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11760, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11729, "src": "15124:7:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 11758, "name": "isApprovedForAll", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11607, "src": "15100:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 11761, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15100:32:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "15045:87:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 11763, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "15044:89:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 11735, "id": 11764, "nodeType": "Return", "src": "15037:96:71" } ] }, "documentation": { "id": 11727, "nodeType": "StructuredDocumentation", "src": "14456:350:71", "text": "@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,\nis an operator of the owner, or is the owner of the token" }, "id": 11766, "implemented": true, "kind": "function", "modifiers": [], "name": "_isApprovedOrOwner", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11732, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11729, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11766, "src": "14839:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11728, "name": "address", "nodeType": "ElementaryTypeName", "src": "14839:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11731, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11766, "src": "14856:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11730, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "14856:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "14838:34:71" }, "returnParameters": { "id": 11735, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11734, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11766, "src": "14896:4:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 11733, "name": "bool", "nodeType": "ElementaryTypeName", "src": "14896:4:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "14895:6:71" }, "scope": 12151, "src": "14811:329:71", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 11780, "nodeType": "Block", "src": "15734:43:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11775, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11769, "src": "15754:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11776, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11771, "src": "15758:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "", "id": 11777, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "15767:2:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "id": 11774, "name": "_safeMint", "nodeType": "Identifier", "overloadedDeclarations": [ 11781, 11810 ], "referencedDeclaration": 11810, "src": "15744:9:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (address,uint256,bytes memory)" } }, "id": 11778, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "15744:26:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11779, "nodeType": "ExpressionStatement", "src": "15744:26:71" } ] }, "documentation": { "id": 11767, "nodeType": "StructuredDocumentation", "src": "15146:518:71", "text": "@dev Internal function to safely mint a new token.\nReverts if the given token ID already exists.\nIf the target address is a contract, it must implement `onERC721Received`,\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\n@param to The address that will own the minted token\n@param tokenId uint256 ID of the token to be minted" }, "id": 11781, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeMint", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11772, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11769, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11781, "src": "15688:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11768, "name": "address", "nodeType": "ElementaryTypeName", "src": "15688:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11771, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11781, "src": "15700:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11770, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15700:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "15687:29:71" }, "returnParameters": { "id": 11773, "nodeType": "ParameterList", "parameters": [], "src": "15734:0:71" }, "scope": 12151, "src": "15669:108:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 11809, "nodeType": "Block", "src": "16463:162:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11792, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11784, "src": "16479:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11793, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11786, "src": "16483:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11791, "name": "_mint", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11869, "src": "16473:5:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 11794, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16473:18:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11795, "nodeType": "ExpressionStatement", "src": "16473:18:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11800, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "16540:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11799, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "16532:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11798, "name": "address", "nodeType": "ElementaryTypeName", "src": "16532:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11801, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16532:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11802, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11784, "src": "16544:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11803, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11786, "src": "16548:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 11804, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11788, "src": "16557:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 11797, "name": "_checkOnERC721Received", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12117, "src": "16509:22:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (address,address,uint256,bytes memory) returns (bool)" } }, "id": 11805, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16509:54:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 11806, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "16565:52:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 11796, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "16501:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11807, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16501:117:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11808, "nodeType": "ExpressionStatement", "src": "16501:117:71" } ] }, "documentation": { "id": 11782, "nodeType": "StructuredDocumentation", "src": "15783:590:71", "text": "@dev Internal function to safely mint a new token.\nReverts if the given token ID already exists.\nIf the target address is a contract, it must implement `onERC721Received`,\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\n@param to The address that will own the minted token\n@param tokenId uint256 ID of the token to be minted\n@param _data bytes data to send along with a safe transfer check" }, "id": 11810, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeMint", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11789, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11784, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11810, "src": "16397:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11783, "name": "address", "nodeType": "ElementaryTypeName", "src": "16397:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11786, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11810, "src": "16409:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11785, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16409:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11788, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11810, "src": "16426:18:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 11787, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "16426:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "16396:49:71" }, "returnParameters": { "id": 11790, "nodeType": "ParameterList", "parameters": [], "src": "16463:0:71" }, "scope": 12151, "src": "16378:247:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 11868, "nodeType": "Block", "src": "16931:332:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11824, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11819, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "16949:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11822, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "16963:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11821, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "16955:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11820, "name": "address", "nodeType": "ElementaryTypeName", "src": "16955:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11823, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16955:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "16949:16:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a206d696e7420746f20746865207a65726f2061646472657373", "id": 11825, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "16967:34:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_8a66f4bb6512ffbfcc3db9b42318eb65f26ac15163eaa9a1e5cfa7bee9d1c7c6", "typeString": "literal_string \"ERC721: mint to the zero address\"" }, "value": "ERC721: mint to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_8a66f4bb6512ffbfcc3db9b42318eb65f26ac15163eaa9a1e5cfa7bee9d1c7c6", "typeString": "literal_string \"ERC721: mint to the zero address\"" } ], "id": 11818, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "16941:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11826, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "16941:61:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11827, "nodeType": "ExpressionStatement", "src": "16941:61:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11832, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "17020:17:71", "subExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11830, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17029:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11829, "name": "_exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11726, "src": "17021:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_bool_$", "typeString": "function (uint256) view returns (bool)" } }, "id": 11831, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17021:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a20746f6b656e20616c7265616479206d696e746564", "id": 11833, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "17039:30:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_2a63ce106ef95058ed21fd07c42a10f11dc5c32ac13a4e847923f7759f635d57", "typeString": "literal_string \"ERC721: token already minted\"" }, "value": "ERC721: token already minted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_2a63ce106ef95058ed21fd07c42a10f11dc5c32ac13a4e847923f7759f635d57", "typeString": "literal_string \"ERC721: token already minted\"" } ], "id": 11828, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "17012:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11834, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17012:58:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11835, "nodeType": "ExpressionStatement", "src": "17012:58:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11839, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17110:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11838, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17102:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11837, "name": "address", "nodeType": "ElementaryTypeName", "src": "17102:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11840, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17102:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11841, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "17114:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11842, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17118:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11836, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12150, "src": "17081:20:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11843, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17081:45:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11844, "nodeType": "ExpressionStatement", "src": "17081:45:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11849, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17159:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11845, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "17137:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11847, "indexExpression": { "argumentTypes": null, "id": 11846, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "17151:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17137:17:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11848, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 13278, "src": "17137:21:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) returns (bool)" } }, "id": 11850, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17137:30:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11851, "nodeType": "ExpressionStatement", "src": "17137:30:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11855, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17195:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 11856, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "17204:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "id": 11852, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "17178:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11854, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "set", "nodeType": "MemberAccess", "referencedDeclaration": 12812, "src": "17178:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$_t_address_$returns$_t_bool_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256,address) returns (bool)" } }, "id": 11857, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17178:29:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11858, "nodeType": "ExpressionStatement", "src": "17178:29:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11862, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17240:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11861, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17232:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11860, "name": "address", "nodeType": "ElementaryTypeName", "src": "17232:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11863, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17232:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11864, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11813, "src": "17244:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11865, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11815, "src": "17248:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11859, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12165, "src": "17223:8:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11866, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17223:33:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11867, "nodeType": "EmitStatement", "src": "17218:38:71" } ] }, "documentation": { "id": 11811, "nodeType": "StructuredDocumentation", "src": "16631:234:71", "text": "@dev Internal function to mint a new token.\nReverts if the given token ID already exists.\n@param to The address that will own the minted token\n@param tokenId uint256 ID of the token to be minted" }, "id": 11869, "implemented": true, "kind": "function", "modifiers": [], "name": "_mint", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11816, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11813, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11869, "src": "16885:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11812, "name": "address", "nodeType": "ElementaryTypeName", "src": "16885:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11815, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11869, "src": "16897:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11814, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16897:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "16884:29:71" }, "returnParameters": { "id": 11817, "nodeType": "ParameterList", "parameters": [], "src": "16931:0:71" }, "scope": 12151, "src": "16870:393:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 11936, "nodeType": "Block", "src": "17493:453:71", "statements": [ { "assignments": [ 11876 ], "declarations": [ { "constant": false, "id": 11876, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11936, "src": "17503:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11875, "name": "address", "nodeType": "ElementaryTypeName", "src": "17503:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 11880, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11878, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17527:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11877, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11350, "src": "17519:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 11879, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17519:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "17503:32:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11882, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11876, "src": "17567:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11885, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17582:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11884, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17574:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11883, "name": "address", "nodeType": "ElementaryTypeName", "src": "17574:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11886, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17574:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11887, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17586:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11881, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12150, "src": "17546:20:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11888, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17546:48:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11889, "nodeType": "ExpressionStatement", "src": "17546:48:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11893, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17649:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11892, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17641:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11891, "name": "address", "nodeType": "ElementaryTypeName", "src": "17641:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11894, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17641:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11895, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17653:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11890, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12139, "src": "17632:8:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 11896, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17632:29:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11897, "nodeType": "ExpressionStatement", "src": "17632:29:71" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 11906, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11900, "name": "_tokenURIs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11269, "src": "17717:10:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_string_storage_$", "typeString": "mapping(uint256 => string storage ref)" } }, "id": 11902, "indexExpression": { "argumentTypes": null, "id": 11901, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17728:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17717:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } ], "id": 11899, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17711:5:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes_storage_ptr_$", "typeString": "type(bytes storage pointer)" }, "typeName": { "id": 11898, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "17711:5:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11903, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17711:26:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes storage pointer" } }, "id": 11904, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "17711:33:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 11905, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17748:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "17711:38:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 11913, "nodeType": "IfStatement", "src": "17707:95:71", "trueBody": { "id": 11912, "nodeType": "Block", "src": "17751:51:71", "statements": [ { "expression": { "argumentTypes": null, "id": 11910, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "delete", "prefix": true, "src": "17765:26:71", "subExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11907, "name": "_tokenURIs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11269, "src": "17772:10:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_string_storage_$", "typeString": "mapping(uint256 => string storage ref)" } }, "id": 11909, "indexExpression": { "argumentTypes": null, "id": 11908, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17783:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "17772:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11911, "nodeType": "ExpressionStatement", "src": "17765:26:71" } ] } }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11918, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17840:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11914, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "17812:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11916, "indexExpression": { "argumentTypes": null, "id": 11915, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11876, "src": "17826:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "17812:20:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11917, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "remove", "nodeType": "MemberAccess", "referencedDeclaration": 13298, "src": "17812:27:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) returns (bool)" } }, "id": 11919, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17812:36:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11920, "nodeType": "ExpressionStatement", "src": "17812:36:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11924, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17879:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 11921, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "17859:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11923, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "remove", "nodeType": "MemberAccess", "referencedDeclaration": 12832, "src": "17859:19:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256) returns (bool)" } }, "id": 11925, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17859:28:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11926, "nodeType": "ExpressionStatement", "src": "17859:28:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11928, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11876, "src": "17912:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11931, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "17927:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11930, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "17919:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11929, "name": "address", "nodeType": "ElementaryTypeName", "src": "17919:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11932, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17919:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11933, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11872, "src": "17931:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11927, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12165, "src": "17903:8:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11934, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "17903:36:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11935, "nodeType": "EmitStatement", "src": "17898:41:71" } ] }, "documentation": { "id": 11870, "nodeType": "StructuredDocumentation", "src": "17269:170:71", "text": "@dev Internal function to burn a specific token.\nReverts if the token does not exist.\n@param tokenId uint256 ID of the token being burned" }, "id": 11937, "implemented": true, "kind": "function", "modifiers": [], "name": "_burn", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11873, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11872, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11937, "src": "17459:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11871, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "17459:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "17458:17:71" }, "returnParameters": { "id": 11874, "nodeType": "ParameterList", "parameters": [], "src": "17493:0:71" }, "scope": 12151, "src": "17444:502:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 12007, "nodeType": "Block", "src": "18402:480:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11952, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11949, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18428:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11948, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11350, "src": "18420:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 11950, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18420:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 11951, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11940, "src": "18440:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "18420:24:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a207472616e73666572206f6620746f6b656e2074686174206973206e6f74206f776e", "id": 11953, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "18446:43:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950", "typeString": "literal_string \"ERC721: transfer of token that is not own\"" }, "value": "ERC721: transfer of token that is not own" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950", "typeString": "literal_string \"ERC721: transfer of token that is not own\"" } ], "id": 11947, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "18412:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11954, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18412:78:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11955, "nodeType": "ExpressionStatement", "src": "18412:78:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 11962, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 11957, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18508:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11960, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "18522:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11959, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "18514:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11958, "name": "address", "nodeType": "ElementaryTypeName", "src": "18514:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11961, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18514:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "18508:16:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732313a207472616e7366657220746f20746865207a65726f2061646472657373", "id": 11963, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "18526:38:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4", "typeString": "literal_string \"ERC721: transfer to the zero address\"" }, "value": "ERC721: transfer to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4", "typeString": "literal_string \"ERC721: transfer to the zero address\"" } ], "id": 11956, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "18500:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11964, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18500:65:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11965, "nodeType": "ExpressionStatement", "src": "18500:65:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11967, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11940, "src": "18597:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11968, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18603:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 11969, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18607:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11966, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12150, "src": "18576:20:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 11970, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18576:39:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11971, "nodeType": "ExpressionStatement", "src": "18576:39:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 11975, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "18694:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 11974, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "18686:7:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 11973, "name": "address", "nodeType": "ElementaryTypeName", "src": "18686:7:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } }, "id": 11976, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18686:10:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11977, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18698:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11972, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12139, "src": "18677:8:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 11978, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18677:29:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11979, "nodeType": "ExpressionStatement", "src": "18677:29:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11984, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18744:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11980, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "18717:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11982, "indexExpression": { "argumentTypes": null, "id": 11981, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11940, "src": "18731:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "18717:19:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11983, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "remove", "nodeType": "MemberAccess", "referencedDeclaration": 13298, "src": "18717:26:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) returns (bool)" } }, "id": 11985, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18717:35:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11986, "nodeType": "ExpressionStatement", "src": "18717:35:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11991, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18784:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 11987, "name": "_holderTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11249, "src": "18762:13:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_struct$_UintSet_$13258_storage_$", "typeString": "mapping(address => struct EnumerableSet.UintSet storage ref)" } }, "id": 11989, "indexExpression": { "argumentTypes": null, "id": 11988, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18776:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "18762:17:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintSet_$13258_storage", "typeString": "struct EnumerableSet.UintSet storage ref" } }, "id": 11990, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 13278, "src": "18762:21:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintSet_$13258_storage_ptr_$_t_uint256_$returns$_t_bool_$bound_to$_t_struct$_UintSet_$13258_storage_ptr_$", "typeString": "function (struct EnumerableSet.UintSet storage pointer,uint256) returns (bool)" } }, "id": 11992, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18762:30:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 11993, "nodeType": "ExpressionStatement", "src": "18762:30:71" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11997, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18820:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 11998, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18829:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "id": 11994, "name": "_tokenOwners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11251, "src": "18803:12:71", "typeDescriptions": { "typeIdentifier": "t_struct$_UintToAddressMap_$12783_storage", "typeString": "struct EnumerableMap.UintToAddressMap storage ref" } }, "id": 11996, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "set", "nodeType": "MemberAccess", "referencedDeclaration": 12812, "src": "18803:16:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_UintToAddressMap_$12783_storage_ptr_$_t_uint256_$_t_address_$returns$_t_bool_$bound_to$_t_struct$_UintToAddressMap_$12783_storage_ptr_$", "typeString": "function (struct EnumerableMap.UintToAddressMap storage pointer,uint256,address) returns (bool)" } }, "id": 11999, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18803:29:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 12000, "nodeType": "ExpressionStatement", "src": "18803:29:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12002, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11940, "src": "18857:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12003, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11942, "src": "18863:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12004, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11944, "src": "18867:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 12001, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12165, "src": "18848:8:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 12005, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "18848:27:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12006, "nodeType": "EmitStatement", "src": "18843:32:71" } ] }, "documentation": { "id": 11938, "nodeType": "StructuredDocumentation", "src": "17952:366:71", "text": "@dev Internal function to transfer ownership of a given token ID to another address.\nAs opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n@param from current owner of the token\n@param to address to receive the ownership of the given token ID\n@param tokenId uint256 ID of the token to be transferred" }, "id": 12008, "implemented": true, "kind": "function", "modifiers": [], "name": "_transfer", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11945, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11940, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12008, "src": "18342:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11939, "name": "address", "nodeType": "ElementaryTypeName", "src": "18342:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11942, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12008, "src": "18356:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 11941, "name": "address", "nodeType": "ElementaryTypeName", "src": "18356:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 11944, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12008, "src": "18368:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11943, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "18368:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "18341:43:71" }, "returnParameters": { "id": 11946, "nodeType": "ParameterList", "parameters": [], "src": "18402:0:71" }, "scope": 12151, "src": "18323:559:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 12029, "nodeType": "Block", "src": "19296:131:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12018, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12011, "src": "19322:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 12017, "name": "_exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11726, "src": "19314:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_bool_$", "typeString": "function (uint256) view returns (bool)" } }, "id": 12019, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19314:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732314d657461646174613a2055524920736574206f66206e6f6e6578697374656e7420746f6b656e", "id": 12020, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "19332:46:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_94be4a260caaeac1b145f03ffa2e70bc612b64982d04f24073aaf3a5f9009978", "typeString": "literal_string \"ERC721Metadata: URI set of nonexistent token\"" }, "value": "ERC721Metadata: URI set of nonexistent token" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_94be4a260caaeac1b145f03ffa2e70bc612b64982d04f24073aaf3a5f9009978", "typeString": "literal_string \"ERC721Metadata: URI set of nonexistent token\"" } ], "id": 12016, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "19306:7:71", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 12021, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "19306:73:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12022, "nodeType": "ExpressionStatement", "src": "19306:73:71" }, { "expression": { "argumentTypes": null, "id": 12027, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 12023, "name": "_tokenURIs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11269, "src": "19389:10:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_string_storage_$", "typeString": "mapping(uint256 => string storage ref)" } }, "id": 12025, "indexExpression": { "argumentTypes": null, "id": 12024, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12011, "src": "19400:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "19389:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 12026, "name": "_tokenURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12013, "src": "19411:9:71", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "19389:31:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "id": 12028, "nodeType": "ExpressionStatement", "src": "19389:31:71" } ] }, "documentation": { "id": 12009, "nodeType": "StructuredDocumentation", "src": "18888:322:71", "text": "@dev Internal function to set the token URI for a given token.\n * Reverts if the token ID does not exist.\n * TIP: If all token IDs share a prefix (for example, if your URIs look like\n`https://api.myproject.com/token/`), use {_setBaseURI} to store\nit and save gas." }, "id": 12030, "implemented": true, "kind": "function", "modifiers": [], "name": "_setTokenURI", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12014, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12011, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12030, "src": "19237:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12010, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "19237:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12013, "mutability": "mutable", "name": "_tokenURI", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12030, "src": "19254:23:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 12012, "name": "string", "nodeType": "ElementaryTypeName", "src": "19254:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "19236:42:71" }, "returnParameters": { "id": 12015, "nodeType": "ParameterList", "parameters": [], "src": "19296:0:71" }, "scope": 12151, "src": "19215:212:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 12040, "nodeType": "Block", "src": "19712:36:71", "statements": [ { "expression": { "argumentTypes": null, "id": 12038, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 12036, "name": "_baseURI", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11271, "src": "19722:8:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 12037, "name": "baseURI_", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12033, "src": "19733:8:71", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "19722:19:71", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "id": 12039, "nodeType": "ExpressionStatement", "src": "19722:19:71" } ] }, "documentation": { "id": 12031, "nodeType": "StructuredDocumentation", "src": "19433:212:71", "text": "@dev Internal function to set the base URI for all token IDs. It is\nautomatically added as a prefix to the value returned in {tokenURI},\nor to the token ID if {tokenURI} is empty." }, "id": 12041, "implemented": true, "kind": "function", "modifiers": [], "name": "_setBaseURI", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12034, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12033, "mutability": "mutable", "name": "baseURI_", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12041, "src": "19671:22:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 12032, "name": "string", "nodeType": "ElementaryTypeName", "src": "19671:6:71", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "19670:24:71" }, "returnParameters": { "id": 12035, "nodeType": "ParameterList", "parameters": [], "src": "19712:0:71" }, "scope": 12151, "src": "19650:98:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 12116, "nodeType": "Block", "src": "20431:920:71", "statements": [ { "condition": { "argumentTypes": null, "id": 12058, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "20445:16:71", "subExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 12055, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12046, "src": "20446:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 12056, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isContract", "nodeType": "MemberAccess", "referencedDeclaration": 12358, "src": "20446:13:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$bound_to$_t_address_$", "typeString": "function (address) view returns (bool)" } }, "id": 12057, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20446:15:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 12062, "nodeType": "IfStatement", "src": "20441:58:71", "trueBody": { "id": 12061, "nodeType": "Block", "src": "20463:36:71", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 12059, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "20484:4:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 12054, "id": 12060, "nodeType": "Return", "src": "20477:11:71" } ] } }, { "assignments": [ 12064, 12066 ], "declarations": [ { "constant": false, "id": 12064, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12116, "src": "20568:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12063, "name": "bool", "nodeType": "ElementaryTypeName", "src": "20568:4:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12066, "mutability": "mutable", "name": "returndata", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12116, "src": "20582:23:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 12065, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "20582:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 12083, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12072, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12046, "src": "20669:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 12071, "name": "IERC721Receiver", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12329, "src": "20653:15:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC721Receiver_$12329_$", "typeString": "type(contract IERC721Receiver)" } }, "id": 12073, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20653:19:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721Receiver_$12329", "typeString": "contract IERC721Receiver" } }, "id": 12074, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "onERC721Received", "nodeType": "MemberAccess", "referencedDeclaration": 12328, "src": "20653:36:71", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bytes4_$", "typeString": "function (address,address,uint256,bytes memory) external returns (bytes4)" } }, "id": 12075, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "20653:45:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 12076, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10740, "src": "20712:10:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 12077, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20712:12:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 12078, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12044, "src": "20738:4:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12079, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12048, "src": "20756:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 12080, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12050, "src": "20777:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "id": 12069, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "20617:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12070, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "20617:22:71", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 12081, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20617:175:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "id": 12067, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12046, "src": "20609:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 12068, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "20609:7:71", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 12082, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "20609:184:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "20567:226:71" }, { "condition": { "argumentTypes": null, "id": 12085, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "20807:8:71", "subExpression": { "argumentTypes": null, "id": 12084, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12064, "src": "20808:7:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 12114, "nodeType": "Block", "src": "21223:122:71", "statements": [ { "assignments": [ 12100 ], "declarations": [ { "constant": false, "id": 12100, "mutability": "mutable", "name": "retval", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12114, "src": "21237:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 12099, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "21237:6:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": null, "visibility": "internal" } ], "id": 12108, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12103, "name": "returndata", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12066, "src": "21264:10:71", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "components": [ { "argumentTypes": null, "id": 12105, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "21277:6:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes4_$", "typeString": "type(bytes4)" }, "typeName": { "id": 12104, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "21277:6:71", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } } ], "id": 12106, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "21276:8:71", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes4_$", "typeString": "type(bytes4)" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_type$_t_bytes4_$", "typeString": "type(bytes4)" } ], "expression": { "argumentTypes": null, "id": 12101, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "21253:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 12102, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "decode", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "21253:10:71", "typeDescriptions": { "typeIdentifier": "t_function_abidecode_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 12107, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21253:32:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "VariableDeclarationStatement", "src": "21237:48:71" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "id": 12111, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 12109, "name": "retval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12100, "src": "21307:6:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 12110, "name": "_ERC721_RECEIVED", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11245, "src": "21317:16:71", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "src": "21307:26:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 12112, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "21306:28:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 12054, "id": 12113, "nodeType": "Return", "src": "21299:35:71" } ] }, "id": 12115, "nodeType": "IfStatement", "src": "20803:542:71", "trueBody": { "id": 12098, "nodeType": "Block", "src": "20817:400:71", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 12089, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 12086, "name": "returndata", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12066, "src": "20835:10:71", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 12087, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "20835:17:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 12088, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "20855:1:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "20835:21:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 12096, "nodeType": "Block", "src": "21114:93:71", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 12093, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "21139:52:71", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 12092, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ -19, -19 ], "referencedDeclaration": -19, "src": "21132:6:71", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 12094, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21132:60:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12095, "nodeType": "ExpressionStatement", "src": "21132:60:71" } ] }, "id": 12097, "nodeType": "IfStatement", "src": "20831:376:71", "trueBody": { "id": 12091, "nodeType": "Block", "src": "20858:250:71", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "20949:145:71", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "20971:40:71", "value": { "arguments": [ { "name": "returndata", "nodeType": "YulIdentifier", "src": "21000:10:71" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "20994:5:71" }, "nodeType": "YulFunctionCall", "src": "20994:17:71" }, "variables": [ { "name": "returndata_size", "nodeType": "YulTypedName", "src": "20975:15:71", "type": "" } ] }, { "expression": { "arguments": [ { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "21043:2:71", "type": "", "value": "32" }, { "name": "returndata", "nodeType": "YulIdentifier", "src": "21047:10:71" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "21039:3:71" }, "nodeType": "YulFunctionCall", "src": "21039:19:71" }, { "name": "returndata_size", "nodeType": "YulIdentifier", "src": "21060:15:71" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "21032:6:71" }, "nodeType": "YulFunctionCall", "src": "21032:44:71" }, "nodeType": "YulExpressionStatement", "src": "21032:44:71" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 12066, "isOffset": false, "isSlot": false, "src": "21000:10:71", "valueSize": 1 }, { "declaration": 12066, "isOffset": false, "isSlot": false, "src": "21047:10:71", "valueSize": 1 } ], "id": 12090, "nodeType": "InlineAssembly", "src": "20940:154:71" } ] } } ] } } ] }, "documentation": { "id": 12042, "nodeType": "StructuredDocumentation", "src": "19754:542:71", "text": "@dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\nThe call is not executed if the target address is not a contract.\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" }, "id": 12117, "implemented": true, "kind": "function", "modifiers": [], "name": "_checkOnERC721Received", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12051, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12044, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20333:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12043, "name": "address", "nodeType": "ElementaryTypeName", "src": "20333:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12046, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20347:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12045, "name": "address", "nodeType": "ElementaryTypeName", "src": "20347:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12048, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20359:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12047, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "20359:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12050, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20376:18:71", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 12049, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "20376:5:71", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "20332:63:71" }, "returnParameters": { "id": 12054, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12053, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12117, "src": "20421:4:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12052, "name": "bool", "nodeType": "ElementaryTypeName", "src": "20421:4:71", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "20420:6:71" }, "scope": 12151, "src": "20301:1050:71", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 12138, "nodeType": "Block", "src": "21412:100:71", "statements": [ { "expression": { "argumentTypes": null, "id": 12128, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 12124, "name": "_tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11255, "src": "21422:15:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 12126, "indexExpression": { "argumentTypes": null, "id": 12125, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12121, "src": "21438:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "21422:24:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 12127, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12119, "src": "21449:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "21422:29:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 12129, "nodeType": "ExpressionStatement", "src": "21422:29:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 12132, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12121, "src": "21483:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 12131, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11350, "src": "21475:7:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 12133, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21475:16:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12134, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12119, "src": "21493:2:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 12135, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12121, "src": "21497:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 12130, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12173, "src": "21466:8:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 12136, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "21466:39:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 12137, "nodeType": "EmitStatement", "src": "21461:44:71" } ] }, "documentation": null, "id": 12139, "implemented": true, "kind": "function", "modifiers": [], "name": "_approve", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12122, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12119, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12139, "src": "21375:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12118, "name": "address", "nodeType": "ElementaryTypeName", "src": "21375:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12121, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12139, "src": "21387:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12120, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "21387:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "21374:29:71" }, "returnParameters": { "id": 12123, "nodeType": "ParameterList", "parameters": [], "src": "21412:0:71" }, "scope": 12151, "src": "21357:155:71", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 12149, "nodeType": "Block", "src": "22158:3:71", "statements": [] }, "documentation": { "id": 12140, "nodeType": "StructuredDocumentation", "src": "21518:545:71", "text": "@dev Hook that is called before any token transfer. This includes minting\nand burning.\n * Calling conditions:\n * - when `from` and `to` are both non-zero, ``from``'s `tokenId` will be\ntransferred 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` and `to` are never both zero.\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]." }, "id": 12150, "implemented": true, "kind": "function", "modifiers": [], "name": "_beforeTokenTransfer", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12147, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12142, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12150, "src": "22098:12:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12141, "name": "address", "nodeType": "ElementaryTypeName", "src": "22098:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12144, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12150, "src": "22112:10:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12143, "name": "address", "nodeType": "ElementaryTypeName", "src": "22112:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12146, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12150, "src": "22124:15:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12145, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "22124:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "22097:43:71" }, "returnParameters": { "id": 12148, "nodeType": "ParameterList", "parameters": [], "src": "22158:0:71" }, "scope": 12151, "src": "22068:93:71", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" } ], "scope": 12152, "src": "528:21635:71" } ], "src": "0:22164:71" }, "compiler": { "name": "solc", "version": "0.6.6+commit.6c089d02.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.1.0", "updatedAt": "2020-04-21T18:10:34.965Z", "devdoc": { "details": "see https://eips.ethereum.org/EIPS/eip-721", "methods": { "approve(address,uint256)": { "details": "Approves another address to transfer the given token ID The zero address indicates there is no approved address. There can only be one approved address per token at a given time. Can only be called by the token owner or an approved operator.", "params": { "to": "address to be approved for the given token ID", "tokenId": "uint256 ID of the token to be approved" } }, "balanceOf(address)": { "details": "Gets the balance of the specified address.", "params": { "owner": "address to query the balance of" }, "returns": { "_0": "uint256 representing the amount owned by the passed address" } }, "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." }, "getApproved(uint256)": { "details": "Gets the approved address for a token ID, or zero if no address set Reverts if the token ID does not exist.", "params": { "tokenId": "uint256 ID of the token to query the approval of" }, "returns": { "_0": "address currently approved for the given token ID" } }, "isApprovedForAll(address,address)": { "details": "Tells whether an operator is approved by a given owner.", "params": { "operator": "operator address which you want to query the approval of", "owner": "owner address which you want to query the approval of" }, "returns": { "_0": "bool whether the given operator is approved by the given owner" } }, "name()": { "details": "Gets the token name.", "returns": { "_0": "string representing the token name" } }, "ownerOf(uint256)": { "details": "Gets the owner of the specified token ID.", "params": { "tokenId": "uint256 ID of the token to query the owner of" }, "returns": { "_0": "address currently marked as the owner of the given token ID" } }, "safeTransferFrom(address,address,uint256)": { "details": "Safely transfers the ownership of a given token ID to another address If the target address is a contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer, and return the magic value `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise, the transfer is reverted. Requires the msg.sender to be the owner, approved, or operator", "params": { "from": "current owner of the token", "to": "address to receive the ownership of the given token ID", "tokenId": "uint256 ID of the token to be transferred" } }, "safeTransferFrom(address,address,uint256,bytes)": { "details": "Safely transfers the ownership of a given token ID to another address If the target address is a contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer, and return the magic value `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise, the transfer is reverted. Requires the _msgSender() to be the owner, approved, or operator", "params": { "_data": "bytes data to send along with a safe transfer check", "from": "current owner of the token", "to": "address to receive the ownership of the given token ID", "tokenId": "uint256 ID of the token to be transferred" } }, "setApprovalForAll(address,bool)": { "details": "Sets or unsets the approval of a given operator An operator is allowed to transfer all tokens of the sender on their behalf.", "params": { "approved": "representing the status of the approval to be set", "operator": "operator address to set the approval" } }, "supportsInterface(bytes4)": { "details": "See {IERC165-supportsInterface}. * Time complexity O(1), guaranteed to always use less than 30 000 gas." }, "symbol()": { "details": "Gets the token symbol.", "returns": { "_0": "string representing the token symbol" } }, "tokenByIndex(uint256)": { "details": "Gets the token ID at a given index of all the tokens in this contract Reverts if the index is greater or equal to the total number of tokens.", "params": { "index": "uint256 representing the index to be accessed of the tokens list" }, "returns": { "_0": "uint256 token ID at the given index of the tokens list" } }, "tokenOfOwnerByIndex(address,uint256)": { "details": "Gets the token ID at a given index of the tokens list of the requested owner.", "params": { "index": "uint256 representing the index to be accessed of the requested tokens list", "owner": "address owning the tokens list to be accessed" }, "returns": { "_0": "uint256 token ID at the given index of the tokens list owned by the requested address" } }, "tokenURI(uint256)": { "details": "Returns the URI for a given token ID. May return an empty string. * If a base URI is set (via {_setBaseURI}), it is added as a prefix to the token's own URI (via {_setTokenURI}). * If there is a base URI but no token URI, the token's ID will be used as its URI when appending it to the base URI. This pattern for autogenerated token URIs can lead to large gas savings. * .Examples |=== |`_setBaseURI()` |`_setTokenURI()` |`tokenURI()` | \"\" | \"\" | \"\" | \"\" | \"token.uri/123\" | \"token.uri/123\" | \"token.uri/\" | \"123\" | \"token.uri/123\" | \"token.uri/\" | \"\" | \"token.uri/\" |=== * Requirements: * - `tokenId` must exist." }, "totalSupply()": { "details": "Gets the total amount of tokens stored by the contract.", "returns": { "_0": "uint256 representing the total amount of tokens" } }, "transferFrom(address,address,uint256)": { "details": "Transfers the ownership of a given token ID to another address. Usage of this method is discouraged, use {safeTransferFrom} whenever possible. Requires the msg.sender to be the owner, approved, or operator.", "params": { "from": "current owner of the token", "to": "address to receive the ownership of the given token ID", "tokenId": "uint256 ID of the token to be transferred" } } }, "title": "ERC721 Non-Fungible Token Standard basic implementation" }, "userdoc": { "methods": {} } }