{ "contractName": "ERC721Enumerable", "abi": [ { "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": [ { "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": [], "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": [ { "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": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "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" } ], "metadata": "{\"compiler\":{\"version\":\"0.8.19+commit.7dd6d404\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"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\":[{\"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\":\"This implements an optional extension of {ERC721} defined in the EIP that adds enumerability of all the token ids in the contract as well as all token ids owned by each account.\",\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"See {IERC721-setApprovalForAll}.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"},\"symbol()\":{\"details\":\"See {IERC721Metadata-symbol}.\"},\"tokenByIndex(uint256)\":{\"details\":\"See {IERC721Enumerable-tokenByIndex}.\"},\"tokenOfOwnerByIndex(address,uint256)\":{\"details\":\"See {IERC721Enumerable-tokenOfOwnerByIndex}.\"},\"tokenURI(uint256)\":{\"details\":\"Returns the Uniform Resource Identifier (URI) for `tokenId` token.\"},\"totalSupply()\":{\"details\":\"See {IERC721Enumerable-totalSupply}.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-transferFrom}.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"project:/contracts/token/ERC721/ERC721Enumerable.sol\":\"ERC721Enumerable\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":25},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/token/ERC721/IERC721.sol\":{\"keccak256\":\"0xab28a56179c1db258c9bf5235b382698cb650debecb51b23d12be9e241374b68\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://daae589a9d6fa7e55f99f86c0a16796ca490f243fb3693632c3711c0646c1d56\",\"dweb:/ipfs/QmR3zpd7wNw3rcUdekwiv6FYHJqksuTCXLVioTxu6Fbxk3\"]},\"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol\":{\"keccak256\":\"0xa82b58eca1ee256be466e536706850163d2ec7821945abd6b4778cfb3bee37da\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6e75cf83beb757b8855791088546b8337e9d4684e169400c20d44a515353b708\",\"dweb:/ipfs/QmYvPafLfoquiDMEj7CKHtvbgHu7TJNPSVPSCjrtjV8HjV\"]},\"@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol\":{\"keccak256\":\"0xd1556954440b31c97a142c6ba07d5cade45f96fafd52091d33a14ebe365aecbf\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://26fef835622b46a5ba08b3ef6b46a22e94b5f285d0f0fb66b703bd30217d2c34\",\"dweb:/ipfs/QmZ548qdwfL1qF7aXz3xh1GCdTiST81kGGuKRqVUfYmPZR\"]},\"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol\":{\"keccak256\":\"0x75b829ff2f26c14355d1cba20e16fe7b29ca58eb5fef665ede48bc0f9c6c74b9\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://a0a107160525724f9e1bbbab031defc2f298296dd9e331f16a6f7130cec32146\",\"dweb:/ipfs/QmemujxSd7gX8A9M8UwmNbz4Ms3U9FG9QfudUgxwvTmPWf\"]},\"@openzeppelin/contracts/utils/Address.sol\":{\"keccak256\":\"0xf96f969e24029d43d0df89e59d365f277021dac62b48e1c1e3ebe0acdd7f1ca1\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ec772b45a624be516f1c81970caa8a2e144301e9d0921cbc1a2789fef39a1269\",\"dweb:/ipfs/QmNyjwxCrGhQMyzLD93oUobJXVe9ceJvRvfXwbEtuxPiEj\"]},\"@openzeppelin/contracts/utils/Strings.sol\":{\"keccak256\":\"0xa4d1d62251f8574deb032a35fc948386a9b4de74b812d4f545a1ac120486b48a\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://8c969013129ba9e651a20735ef659fef6d8a1139ea3607bd4b26ddea2d645634\",\"dweb:/ipfs/QmVhVa6LGuzAcB8qgDtVHRkucn4ihj5UZr8xBLcJkP6ucb\"]},\"@openzeppelin/contracts/utils/introspection/ERC165.sol\":{\"keccak256\":\"0xd10975de010d89fd1c78dc5e8a9a7e7f496198085c151648f20cba166b32582b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://fb0048dee081f6fffa5f74afc3fb328483c2a30504e94a0ddd2a5114d731ec4d\",\"dweb:/ipfs/QmZptt1nmYoA5SgjwnSgWqgUSDgm4q52Yos3xhnMv3MV43\"]},\"@openzeppelin/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x447a5f3ddc18419d41ff92b3773fb86471b1db25773e07f877f548918a185bf1\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://be161e54f24e5c6fae81a12db1a8ae87bc5ae1b0ddc805d82a1440a68455088f\",\"dweb:/ipfs/QmP7C3CHdY9urF4dEMb9wmsp1wMxHF6nhA2yQE5SKiPAdy\"]},\"@openzeppelin/contracts/utils/math/Math.sol\":{\"keccak256\":\"0xa1e8e83cd0087785df04ac79fb395d9f3684caeaf973d9e2c71caef723a3a5d6\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://33bbf48cc069be677705037ba7520c22b1b622c23b33e1a71495f2d36549d40b\",\"dweb:/ipfs/Qmct36zWXv3j7LZB83uwbg7TXwnZSN1fqHNDZ93GG98bGz\"]},\"project:/contracts/token/ERC721/ERC721Base.sol\":{\"keccak256\":\"0x2eec4eca886f3a95a19012153379288b5ffd20f88841a4a2c7f622ce22e140b3\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://1f94296195017aec1029c0f0262388563f6d73659304ecec5cf92b52bdfefa25\",\"dweb:/ipfs/Qme7pZMyPKYQW6v3gjyEeo9YH24LBnLxb7Y2bfHzM9R5vj\"]},\"project:/contracts/token/ERC721/ERC721Core.sol\":{\"keccak256\":\"0x9e8b158cc5525ad454a540fd6a933a2a1f4d831581a69640f57434b99070e523\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://b808dc37f808fc11531401948c84de89172b7a21cf853484e707c81f514b95d0\",\"dweb:/ipfs/QmfVLezwsANYfiTeEgDV1yyvjiJWz7T3AeHUow5hhFP9iV\"]},\"project:/contracts/token/ERC721/ERC721Enumerable.sol\":{\"keccak256\":\"0x65f2e1a1f5b83533f155a9759a2c86be7fb10e5023ec382018383a3a1ae7cf16\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://f8482e2649d16d9dc5bf0e92c5bc9477b1f0830042d244898e6b95e04600b8fd\",\"dweb:/ipfs/QmZtVyodFjAKTYRzkETxEhMbTa2n7XKdQtYtMKSMdpdF9u\"]}},\"version\":1}", "bytecode": "0x", "deployedBytecode": "0x", "immutableReferences": {}, "generatedSources": [], "deployedGeneratedSources": [], "sourceMap": "", "deployedSourceMap": "", "source": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nimport \"./ERC721Base.sol\";\nimport \"@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol\";\n\n/**\n * @dev This implements an optional extension of {ERC721} defined in the EIP that adds\n * enumerability of all the token ids in the contract as well as all token ids owned by each\n * account.\n */\nabstract contract ERC721Enumerable is ERC721Base, IERC721Enumerable {\n // Mapping from owner to list of owned token IDs\n mapping(address => mapping(uint256 => uint256)) private _ownedTokens;\n\n // Mapping from token ID to index of the owner tokens list\n mapping(uint256 => uint256) private _ownedTokensIndex;\n\n // Array with all token ids, used for enumeration\n uint256[] private _allTokens;\n\n // Mapping from token id to position in the allTokens array\n mapping(uint256 => uint256) private _allTokensIndex;\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721Core) returns (bool) {\n return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.\n */\n function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {\n require(index < ERC721Core.balanceOf(owner), \"ERC721Enumerable: owner index out of bounds\");\n return _ownedTokens[owner][index];\n }\n\n /**\n * @dev See {IERC721Enumerable-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _allTokens.length;\n }\n\n /**\n * @dev See {IERC721Enumerable-tokenByIndex}.\n */\n function tokenByIndex(uint256 index) public view virtual override returns (uint256) {\n require(index < ERC721Enumerable.totalSupply(), \"ERC721Enumerable: global index out of bounds\");\n return _allTokens[index];\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId,\n uint96 tokenData\n ) internal virtual override {\n super._beforeTokenTransfer(from, to, tokenId, tokenData);\n\n if (from == address(0)) {\n _addTokenToAllTokensEnumeration(tokenId);\n } else if (from != to) {\n _removeTokenFromOwnerEnumeration(from, tokenId);\n }\n if (to == address(0)) {\n _removeTokenFromAllTokensEnumeration(tokenId);\n } else if (to != from) {\n _addTokenToOwnerEnumeration(to, tokenId);\n }\n }\n\n /**\n * @dev Private function to add a token to this extension's ownership-tracking data structures.\n * @param to address representing the new owner of the given token ID\n * @param tokenId uint256 ID of the token to be added to the tokens list of the given address\n */\n function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {\n uint256 length = ERC721Core.balanceOf(to);\n _ownedTokens[to][length] = tokenId;\n _ownedTokensIndex[tokenId] = length;\n }\n\n /**\n * @dev Private function to add a token to this extension's token tracking data structures.\n * @param tokenId uint256 ID of the token to be added to the tokens list\n */\n function _addTokenToAllTokensEnumeration(uint256 tokenId) private {\n _allTokensIndex[tokenId] = _allTokens.length;\n _allTokens.push(tokenId);\n }\n\n /**\n * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that\n * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for\n * gas optimizations e.g. when performing a transfer operation (avoiding double writes).\n * This has O(1) time complexity, but alters the order of the _ownedTokens array.\n * @param from address representing the previous owner of the given token ID\n * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address\n */\n function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {\n // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and\n // then delete the last slot (swap and pop).\n\n uint256 lastTokenIndex = ERC721Core.balanceOf(from) - 1;\n uint256 tokenIndex = _ownedTokensIndex[tokenId];\n\n // When the token to delete is the last token, the swap operation is unnecessary\n if (tokenIndex != lastTokenIndex) {\n uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];\n\n _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token\n _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index\n }\n\n // This also deletes the contents at the last position of the array\n delete _ownedTokensIndex[tokenId];\n delete _ownedTokens[from][lastTokenIndex];\n }\n\n /**\n * @dev Private function to remove a token from this extension's token tracking data structures.\n * This has O(1) time complexity, but alters the order of the _allTokens array.\n * @param tokenId uint256 ID of the token to be removed from the tokens list\n */\n function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {\n // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and\n // then delete the last slot (swap and pop).\n\n uint256 lastTokenIndex = _allTokens.length - 1;\n uint256 tokenIndex = _allTokensIndex[tokenId];\n\n // When the token to delete is the last token, the swap operation is unnecessary. 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"overloadedDeclarations": [], "referencedDeclaration": 20850, "src": "3156:27:79", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 20814, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "3156:40:79", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20815, "nodeType": "ExpressionStatement", "src": "3156:40:79" } ] } }, "id": 20818, "nodeType": "IfStatement", "src": "3028:179:79", "trueBody": { "id": 20807, "nodeType": "Block", "src": "3050:70:79", "statements": [ { "expression": { "arguments": [ { "id": 20804, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20760, "src": "3101:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 20803, "name": "_removeTokenFromAllTokensEnumeration", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20981, "src": "3064:36:79", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_uint256_$returns$__$", "typeString": "function (uint256)" } }, "id": 20805, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "3064:45:79", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20806, "nodeType": "ExpressionStatement", "src": "3064:45:79" } ] } } ] }, "documentation": { "id": 20754, "nodeType": "StructuredDocumentation", "src": "2014:585:79", "text": " @dev Hook that is called before any token transfer. This includes minting\n and burning.\n Calling conditions:\n - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n transferred to `to`.\n - When `from` is zero, `tokenId` will be minted for `to`.\n - When `to` is zero, ``from``'s `tokenId` will be burned.\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]." }, "id": 20820, "implemented": true, "kind": "function", "modifiers": [], "name": "_beforeTokenTransfer", "nameLocation": "2613:20:79", "nodeType": "FunctionDefinition", "overrides": { "id": 20764, "nodeType": "OverrideSpecifier", "overrides": [], "src": "2750:8:79" }, "parameters": { "id": 20763, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20756, "mutability": "mutable", "name": "from", "nameLocation": "2651:4:79", "nodeType": "VariableDeclaration", "scope": 20820, "src": "2643:12:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 20755, "name": "address", "nodeType": "ElementaryTypeName", "src": "2643:7:79", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 20758, "mutability": "mutable", "name": "to", "nameLocation": "2673:2:79", "nodeType": "VariableDeclaration", "scope": 20820, "src": "2665:10:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 20757, "name": "address", "nodeType": "ElementaryTypeName", "src": "2665:7:79", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 20760, "mutability": "mutable", "name": "tokenId", "nameLocation": "2693:7:79", "nodeType": "VariableDeclaration", "scope": 20820, "src": "2685:15:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20759, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2685:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 20762, "mutability": "mutable", "name": "tokenData", "nameLocation": "2717:9:79", "nodeType": "VariableDeclaration", "scope": 20820, "src": "2710:16:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint96", "typeString": "uint96" }, "typeName": { "id": 20761, "name": "uint96", "nodeType": "ElementaryTypeName", "src": "2710:6:79", "typeDescriptions": { "typeIdentifier": "t_uint96", "typeString": "uint96" } }, "visibility": "internal" } ], "src": "2633:99:79" }, "returnParameters": { "id": 20765, "nodeType": "ParameterList", "parameters": [], "src": "2759:0:79" }, "scope": 20982, "src": "2604:609:79", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 20849, "nodeType": "Block", "src": "3581:147:79", "statements": [ { "assignments": [ 20829 ], "declarations": [ { "constant": false, "id": 20829, "mutability": "mutable", "name": "length", "nameLocation": "3599:6:79", "nodeType": "VariableDeclaration", "scope": 20849, "src": "3591:14:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20828, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3591:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 20834, "initialValue": { "arguments": [ { "id": 20832, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20823, "src": "3629:2:79", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 20830, "name": "ERC721Core", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20641, "src": "3608:10:79", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721Core_$20641_$", "typeString": "type(contract ERC721Core)" } }, "id": 20831, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberLocation": "3619:9:79", "memberName": "balanceOf", "nodeType": "MemberAccess", "referencedDeclaration": 19906, "src": "3608:20:79", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_uint256_$", "typeString": "function (address) view returns (uint256)" } }, "id": 20833, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "3608:24:79", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3591:41:79" }, { "expression": { "id": 20841, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "baseExpression": { "id": 20835, "name": "_ownedTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20656, "src": "3642:12:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_uint256_$_t_uint256_$_$", "typeString": "mapping(address => mapping(uint256 => uint256))" } }, "id": 20838, "indexExpression": { "id": 20836, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20823, "src": "3655:2:79", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3642:16:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20839, "indexExpression": { "id": 20837, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20829, "src": "3659:6:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3642:24:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 20840, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20825, "src": "3669:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3642:34:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 20842, "nodeType": "ExpressionStatement", "src": "3642:34:79" }, { "expression": { "id": 20847, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 20843, "name": "_ownedTokensIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20660, "src": "3686:17:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20845, "indexExpression": { "id": 20844, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20825, "src": "3704:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3686:26:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 20846, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20829, "src": "3715:6:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3686:35:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 20848, "nodeType": "ExpressionStatement", "src": "3686:35:79" } ] }, "documentation": { "id": 20821, "nodeType": "StructuredDocumentation", "src": "3219:283:79", "text": " @dev Private function to add a token to this extension's ownership-tracking data structures.\n @param to address representing the new owner of the given token ID\n @param tokenId uint256 ID of the token to be added to the tokens list of the given address" }, "id": 20850, "implemented": true, "kind": "function", "modifiers": [], "name": "_addTokenToOwnerEnumeration", "nameLocation": "3516:27:79", "nodeType": "FunctionDefinition", "parameters": { "id": 20826, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20823, "mutability": "mutable", "name": "to", "nameLocation": "3552:2:79", "nodeType": "VariableDeclaration", "scope": 20850, "src": "3544:10:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 20822, "name": "address", "nodeType": "ElementaryTypeName", "src": "3544:7:79", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 20825, "mutability": "mutable", "name": "tokenId", "nameLocation": "3564:7:79", "nodeType": "VariableDeclaration", "scope": 20850, "src": "3556:15:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20824, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3556:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "3543:29:79" }, "returnParameters": { "id": 20827, "nodeType": "ParameterList", "parameters": [], "src": "3581:0:79" }, "scope": 20982, "src": "3507:221:79", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 20869, "nodeType": "Block", "src": "3989:95:79", "statements": [ { "expression": { "id": 20861, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 20856, "name": "_allTokensIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20667, "src": "3999:15:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20858, "indexExpression": { "id": 20857, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20853, "src": "4015:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3999:24:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "expression": { "id": 20859, "name": "_allTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20663, "src": "4026:10:79", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$dyn_storage", "typeString": "uint256[] storage ref" } }, "id": 20860, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberLocation": "4037:6:79", "memberName": "length", "nodeType": "MemberAccess", "src": "4026:17:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3999:44:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 20862, "nodeType": "ExpressionStatement", "src": "3999:44:79" }, { "expression": { "arguments": [ { "id": 20866, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20853, "src": "4069:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 20863, "name": "_allTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20663, "src": "4053:10:79", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$dyn_storage", "typeString": "uint256[] storage ref" } }, "id": 20865, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberLocation": "4064:4:79", "memberName": "push", "nodeType": "MemberAccess", "src": "4053:15:79", "typeDescriptions": { "typeIdentifier": "t_function_arraypush_nonpayable$_t_array$_t_uint256_$dyn_storage_ptr_$_t_uint256_$returns$__$attached_to$_t_array$_t_uint256_$dyn_storage_ptr_$", "typeString": "function (uint256[] storage pointer,uint256)" } }, "id": 20867, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "4053:24:79", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20868, "nodeType": "ExpressionStatement", "src": "4053:24:79" } ] }, "documentation": { "id": 20851, "nodeType": "StructuredDocumentation", "src": "3734:184:79", "text": " @dev Private function to add a token to this extension's token tracking data structures.\n @param tokenId uint256 ID of the token to be added to the tokens list" }, "id": 20870, "implemented": true, "kind": "function", "modifiers": [], "name": "_addTokenToAllTokensEnumeration", "nameLocation": "3932:31:79", "nodeType": "FunctionDefinition", "parameters": { "id": 20854, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20853, "mutability": "mutable", "name": "tokenId", "nameLocation": "3972:7:79", "nodeType": "VariableDeclaration", "scope": 20870, "src": "3964:15:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20852, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3964:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "3963:17:79" }, "returnParameters": { "id": 20855, "nodeType": "ParameterList", "parameters": [], "src": "3989:0:79" }, "scope": 20982, "src": "3923:161:79", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 20932, "nodeType": "Block", "src": "4782:893:79", "statements": [ { "assignments": [ 20879 ], "declarations": [ { "constant": false, "id": 20879, "mutability": "mutable", "name": "lastTokenIndex", "nameLocation": "4971:14:79", "nodeType": "VariableDeclaration", "scope": 20932, "src": "4963:22:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20878, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4963:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 20886, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 20885, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 20882, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20873, "src": "5009:4:79", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 20880, "name": "ERC721Core", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20641, "src": "4988:10:79", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721Core_$20641_$", "typeString": "type(contract ERC721Core)" } }, "id": 20881, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberLocation": "4999:9:79", "memberName": "balanceOf", "nodeType": "MemberAccess", "referencedDeclaration": 19906, "src": "4988:20:79", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_uint256_$", "typeString": "function (address) view returns (uint256)" } }, "id": 20883, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "4988:26:79", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 20884, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5017:1:79", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "4988:30:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "4963:55:79" }, { "assignments": [ 20888 ], "declarations": [ { "constant": false, "id": 20888, "mutability": "mutable", "name": "tokenIndex", "nameLocation": "5036:10:79", "nodeType": "VariableDeclaration", "scope": 20932, "src": "5028:18:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20887, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5028:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 20892, "initialValue": { "baseExpression": { "id": 20889, "name": "_ownedTokensIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20660, "src": "5049:17:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20891, "indexExpression": { "id": 20890, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20875, "src": "5067:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5049:26:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "5028:47:79" }, { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 20895, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 20893, "name": "tokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20888, "src": "5179:10:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "id": 20894, "name": "lastTokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20879, "src": "5193:14:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5179:28:79", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 20919, "nodeType": "IfStatement", "src": "5175:323:79", "trueBody": { "id": 20918, "nodeType": "Block", "src": "5209:289:79", "statements": [ { "assignments": [ 20897 ], "declarations": [ { "constant": false, "id": 20897, "mutability": "mutable", "name": "lastTokenId", "nameLocation": "5231:11:79", "nodeType": "VariableDeclaration", "scope": 20918, "src": "5223:19:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20896, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5223:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 20903, "initialValue": { "baseExpression": { "baseExpression": { "id": 20898, "name": "_ownedTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20656, "src": "5245:12:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_uint256_$_t_uint256_$_$", "typeString": "mapping(address => mapping(uint256 => uint256))" } }, "id": 20900, "indexExpression": { "id": 20899, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20873, "src": "5258:4:79", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5245:18:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20902, "indexExpression": { "id": 20901, "name": "lastTokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20879, "src": "5264:14:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5245:34:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "5223:56:79" }, { "expression": { "id": 20910, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "baseExpression": { "id": 20904, "name": "_ownedTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20656, "src": "5294:12:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_uint256_$_t_uint256_$_$", "typeString": "mapping(address => mapping(uint256 => uint256))" } }, "id": 20907, "indexExpression": { "id": 20905, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20873, "src": "5307:4:79", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5294:18:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20908, "indexExpression": { "id": 20906, "name": "tokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20888, "src": "5313:10:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5294:30:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 20909, "name": "lastTokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20897, "src": "5327:11:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5294:44:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 20911, "nodeType": "ExpressionStatement", "src": "5294:44:79" }, { "expression": { "id": 20916, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 20912, "name": "_ownedTokensIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20660, "src": "5410:17:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20914, "indexExpression": { "id": 20913, "name": "lastTokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20897, "src": "5428:11:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5410:30:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 20915, "name": "tokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20888, "src": "5443:10:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5410:43:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 20917, "nodeType": "ExpressionStatement", "src": "5410:43:79" } ] } }, { "expression": { "id": 20923, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "delete", "prefix": true, "src": "5584:33:79", "subExpression": { "baseExpression": { "id": 20920, "name": "_ownedTokensIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20660, "src": "5591:17:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20922, "indexExpression": { "id": 20921, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20875, "src": "5609:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5591:26:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20924, "nodeType": "ExpressionStatement", "src": "5584:33:79" }, { "expression": { "id": 20930, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "delete", "prefix": true, "src": "5627:41:79", "subExpression": { "baseExpression": { "baseExpression": { "id": 20925, "name": "_ownedTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20656, "src": "5634:12:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_uint256_$_t_uint256_$_$", "typeString": "mapping(address => mapping(uint256 => uint256))" } }, "id": 20927, "indexExpression": { "id": 20926, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20873, "src": "5647:4:79", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "5634:18:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20929, "indexExpression": { "id": 20928, "name": "lastTokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20879, "src": "5653:14:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "5634:34:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20931, "nodeType": "ExpressionStatement", "src": "5627:41:79" } ] }, "documentation": { "id": 20871, "nodeType": "StructuredDocumentation", "src": "4090:606:79", "text": " @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that\n while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for\n gas optimizations e.g. when performing a transfer operation (avoiding double writes).\n This has O(1) time complexity, but alters the order of the _ownedTokens array.\n @param from address representing the previous owner of the given token ID\n @param tokenId uint256 ID of the token to be removed from the tokens list of the given address" }, "id": 20933, "implemented": true, "kind": "function", "modifiers": [], "name": "_removeTokenFromOwnerEnumeration", "nameLocation": "4710:32:79", "nodeType": "FunctionDefinition", "parameters": { "id": 20876, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20873, "mutability": "mutable", "name": "from", "nameLocation": "4751:4:79", "nodeType": "VariableDeclaration", "scope": 20933, "src": "4743:12:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 20872, "name": "address", "nodeType": "ElementaryTypeName", "src": "4743:7:79", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 20875, "mutability": "mutable", "name": "tokenId", "nameLocation": "4765:7:79", "nodeType": "VariableDeclaration", "scope": 20933, "src": "4757:15:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20874, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4757:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "4742:31:79" }, "returnParameters": { "id": 20877, "nodeType": "ParameterList", "parameters": [], "src": "4782:0:79" }, "scope": 20982, "src": "4701:974:79", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 20980, "nodeType": "Block", "src": "6034:990:79", "statements": [ { "assignments": [ 20940 ], "declarations": [ { "constant": false, "id": 20940, "mutability": "mutable", "name": "lastTokenIndex", "nameLocation": "6220:14:79", "nodeType": "VariableDeclaration", "scope": 20980, "src": "6212:22:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20939, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6212:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 20945, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 20944, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 20941, "name": "_allTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20663, "src": "6237:10:79", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$dyn_storage", "typeString": "uint256[] storage ref" } }, "id": 20942, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberLocation": "6248:6:79", "memberName": "length", "nodeType": "MemberAccess", "src": "6237:17:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 20943, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6257:1:79", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "6237:21:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "6212:46:79" }, { "assignments": [ 20947 ], "declarations": [ { "constant": false, "id": 20947, "mutability": "mutable", "name": "tokenIndex", "nameLocation": "6276:10:79", "nodeType": "VariableDeclaration", "scope": 20980, "src": "6268:18:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20946, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6268:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 20951, "initialValue": { "baseExpression": { "id": 20948, "name": "_allTokensIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20667, "src": "6289:15:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20950, "indexExpression": { "id": 20949, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20936, "src": "6305:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "6289:24:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "6268:45:79" }, { "assignments": [ 20953 ], "declarations": [ { "constant": false, "id": 20953, "mutability": "mutable", "name": "lastTokenId", "nameLocation": "6643:11:79", "nodeType": "VariableDeclaration", "scope": 20980, "src": "6635:19:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20952, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6635:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 20957, "initialValue": { "baseExpression": { "id": 20954, "name": "_allTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20663, "src": "6657:10:79", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$dyn_storage", "typeString": "uint256[] storage ref" } }, "id": 20956, "indexExpression": { "id": 20955, "name": "lastTokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20940, "src": "6668:14:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "6657:26:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "6635:48:79" }, { "expression": { "id": 20962, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 20958, "name": "_allTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20663, "src": "6694:10:79", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$dyn_storage", "typeString": "uint256[] storage ref" } }, "id": 20960, "indexExpression": { "id": 20959, "name": "tokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20947, "src": "6705:10:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6694:22:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 20961, "name": "lastTokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20953, "src": "6719:11:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6694:36:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 20963, "nodeType": "ExpressionStatement", "src": "6694:36:79" }, { "expression": { "id": 20968, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 20964, "name": "_allTokensIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20667, "src": "6798:15:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20966, "indexExpression": { "id": 20965, "name": "lastTokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20953, "src": "6814:11:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6798:28:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 20967, "name": "tokenIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20947, "src": "6829:10:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "6798:41:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 20969, "nodeType": "ExpressionStatement", "src": "6798:41:79" }, { "expression": { "id": 20973, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "delete", "prefix": true, "src": "6960:31:79", "subExpression": { "baseExpression": { "id": 20970, "name": "_allTokensIndex", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20667, "src": "6967:15:79", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_uint256_$", "typeString": "mapping(uint256 => uint256)" } }, "id": 20972, "indexExpression": { "id": 20971, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20936, "src": "6983:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "6967:24:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20974, "nodeType": "ExpressionStatement", "src": "6960:31:79" }, { "expression": { "arguments": [], "expression": { "argumentTypes": [], "expression": { "id": 20975, "name": "_allTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20663, "src": "7001:10:79", "typeDescriptions": { "typeIdentifier": "t_array$_t_uint256_$dyn_storage", "typeString": "uint256[] storage ref" } }, "id": 20977, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberLocation": "7012:3:79", "memberName": "pop", "nodeType": "MemberAccess", "src": "7001:14:79", "typeDescriptions": { "typeIdentifier": "t_function_arraypop_nonpayable$_t_array$_t_uint256_$dyn_storage_ptr_$returns$__$attached_to$_t_array$_t_uint256_$dyn_storage_ptr_$", "typeString": "function (uint256[] storage pointer)" } }, "id": 20978, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "7001:16:79", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20979, "nodeType": "ExpressionStatement", "src": "7001:16:79" } ] }, "documentation": { "id": 20934, "nodeType": "StructuredDocumentation", "src": "5681:277:79", "text": " @dev Private function to remove a token from this extension's token tracking data structures.\n This has O(1) time complexity, but alters the order of the _allTokens array.\n @param tokenId uint256 ID of the token to be removed from the tokens list" }, "id": 20981, "implemented": true, "kind": "function", "modifiers": [], "name": "_removeTokenFromAllTokensEnumeration", "nameLocation": "5972:36:79", "nodeType": "FunctionDefinition", "parameters": { "id": 20937, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20936, "mutability": "mutable", "name": "tokenId", "nameLocation": "6017:7:79", "nodeType": "VariableDeclaration", "scope": 20981, "src": "6009:15:79", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20935, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6009:7:79", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "6008:17:79" }, "returnParameters": { "id": 20938, "nodeType": "ParameterList", "parameters": [], "src": "6034:0:79" }, "scope": 20982, "src": "5963:1061:79", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" } ], "scope": 20983, "src": "365:6661:79", "usedErrors": [] } ], "src": "32:6995:79" }, "compiler": { "name": "solc", "version": "0.8.19+commit.7dd6d404.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.4.12", "updatedAt": "2023-03-22T17:07:39.854Z", "devdoc": { "details": "This implements an optional extension of {ERC721} defined in the EIP that adds enumerability of all the token ids in the contract as well as all token ids owned by each account.", "events": { "Approval(address,address,uint256)": { "details": "Emitted when `owner` enables `approved` to manage the `tokenId` token." }, "ApprovalForAll(address,address,bool)": { "details": "Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets." }, "Transfer(address,address,uint256)": { "details": "Emitted when `tokenId` token is transferred from `from` to `to`." } }, "kind": "dev", "methods": { "approve(address,uint256)": { "details": "See {IERC721-approve}." }, "balanceOf(address)": { "details": "See {IERC721-balanceOf}." }, "getApproved(uint256)": { "details": "See {IERC721-getApproved}." }, "isApprovedForAll(address,address)": { "details": "See {IERC721-isApprovedForAll}." }, "name()": { "details": "See {IERC721Metadata-name}." }, "ownerOf(uint256)": { "details": "See {IERC721-ownerOf}." }, "safeTransferFrom(address,address,uint256)": { "details": "See {IERC721-safeTransferFrom}." }, "safeTransferFrom(address,address,uint256,bytes)": { "details": "See {IERC721-safeTransferFrom}." }, "setApprovalForAll(address,bool)": { "details": "See {IERC721-setApprovalForAll}." }, "supportsInterface(bytes4)": { "details": "See {IERC165-supportsInterface}." }, "symbol()": { "details": "See {IERC721Metadata-symbol}." }, "tokenByIndex(uint256)": { "details": "See {IERC721Enumerable-tokenByIndex}." }, "tokenOfOwnerByIndex(address,uint256)": { "details": "See {IERC721Enumerable-tokenOfOwnerByIndex}." }, "tokenURI(uint256)": { "details": "Returns the Uniform Resource Identifier (URI) for `tokenId` token." }, "totalSupply()": { "details": "See {IERC721Enumerable-totalSupply}." }, "transferFrom(address,address,uint256)": { "details": "See {IERC721-transferFrom}." } }, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }