{ "fileName": "IERC721.sol", "contractName": "IERC721", "source": "pragma solidity ^0.6.2;\n\nimport \"../../introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of NFTs in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the NFT specified by `tokenId`.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to\n * another (`to`).\n *\n *\n *\n * Requirements:\n * - `from`, `to` cannot be zero.\n * - `tokenId` must be owned by `from`.\n * - If the caller is not `from`, it must be have been allowed to move this\n * NFT by either {approve} or {setApprovalForAll}.\n */\n function safeTransferFrom(address from, address to, uint256 tokenId) external;\n /**\n * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to\n * another (`to`).\n *\n * Requirements:\n * - If the caller is not `from`, it must be approved to move this NFT by\n * either {approve} or {setApprovalForAll}.\n */\n function transferFrom(address from, address to, uint256 tokenId) external;\n function approve(address to, uint256 tokenId) external;\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n function setApprovalForAll(address operator, bool _approved) external;\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n\n\n function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;\n}\n", "sourcePath": "contracts/token/ERC721/IERC721.sol", "sourceMap": "", "deployedSourceMap": "", "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": "balance", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "getApproved", "outputs": [ { "internalType": "address", "name": "operator", "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": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "ownerOf", "outputs": [ { "internalType": "address", "name": "owner", "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": [ { "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" } ], "ast": { "absolutePath": "contracts/token/ERC721/IERC721.sol", "exportedSymbols": { "IERC721": [ 12484 ] }, "id": 12485, "nodeType": "SourceUnit", "nodes": [ { "id": 12378, "literals": [ "solidity", "^", "0.6", ".2" ], "nodeType": "PragmaDirective", "src": "0:23:90" }, { "absolutePath": "contracts/introspection/IERC165.sol", "file": "../../introspection/IERC165.sol", "id": 12379, "nodeType": "ImportDirective", "scope": 12485, "sourceUnit": 2780, "src": "25:41:90", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 12381, "name": "IERC165", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 2779, "src": "157:7:90", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC165_$2779", "typeString": "contract IERC165" } }, "id": 12382, "nodeType": "InheritanceSpecifier", "src": "157:7:90" } ], "contractDependencies": [ 2779 ], "contractKind": "interface", "documentation": { "id": 12380, "nodeType": "StructuredDocumentation", "src": "68:67:90", "text": "@dev Required interface of an ERC721 compliant contract." }, "fullyImplemented": false, "id": 12484, "linearizedBaseContracts": [ 12484, 2779 ], "name": "IERC721", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": null, "id": 12390, "name": "Transfer", "nodeType": "EventDefinition", "parameters": { "id": 12389, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12384, "indexed": true, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12390, "src": "186:20:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12383, "name": "address", "nodeType": "ElementaryTypeName", "src": "186:7:90", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12386, "indexed": true, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", 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"185:67:90" }, "src": "171:82:90" }, { "anonymous": false, "documentation": null, "id": 12398, "name": "Approval", "nodeType": "EventDefinition", "parameters": { "id": 12397, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12392, "indexed": true, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12398, "src": "273:21:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12391, "name": "address", "nodeType": "ElementaryTypeName", "src": "273:7:90", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12394, "indexed": true, "mutability": "mutable", "name": "approved", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12398, "src": "296:24:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12393, "name": "address", "nodeType": "ElementaryTypeName", "src": "296:7:90", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12396, "indexed": true, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12398, "src": "322:23:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 12395, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "322:7:90", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "272:74:90" }, "src": "258:89:90" }, { "anonymous": false, "documentation": null, "id": 12406, "name": "ApprovalForAll", "nodeType": "EventDefinition", "parameters": { "id": 12405, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12400, "indexed": true, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12406, "src": "373:21:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12399, "name": "address", "nodeType": "ElementaryTypeName", "src": "373:7:90", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12402, "indexed": true, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12406, "src": "396:24:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12401, "name": "address", "nodeType": "ElementaryTypeName", "src": "396:7:90", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12404, "indexed": false, "mutability": "mutable", "name": "approved", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12406, "src": "422:13:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 12403, "name": "bool", "nodeType": "ElementaryTypeName", "src": "422:4:90", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "372:64:90" }, "src": "352:85:90" }, { "body": null, "documentation": { "id": 12407, "nodeType": "StructuredDocumentation", "src": "443:74:90", "text": "@dev Returns the number of NFTs in ``owner``'s account." }, "functionSelector": "70a08231", "id": 12414, "implemented": false, "kind": "function", "modifiers": [], "name": "balanceOf", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12410, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12409, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12414, "src": "541:13:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12408, "name": "address", "nodeType": "ElementaryTypeName", "src": "541:7:90", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "540:15:90" }, "returnParameters": { "id": 12413, "nodeType": "ParameterList", "parameters": [ { "constant": 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"documentation": { "id": 12433, "nodeType": "StructuredDocumentation", "src": "1220:266:90", "text": "@dev Transfers a specific NFT (`tokenId`) from one account (`from`) to\nanother (`to`).\n * Requirements:\n- If the caller is not `from`, it must be approved to move this NFT by\neither {approve} or {setApprovalForAll}." }, "functionSelector": "23b872dd", "id": 12442, "implemented": false, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12440, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12435, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12442, "src": "1513:12:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12434, "name": "address", "nodeType": "ElementaryTypeName", "src": "1513:7:90", "stateMutability": 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"typeName": { "id": 12438, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1539:7:90", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1512:43:90" }, "returnParameters": { "id": 12441, "nodeType": "ParameterList", "parameters": [], "src": "1564:0:90" }, "scope": 12484, "src": "1491:74:90", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "body": null, "documentation": null, "functionSelector": "095ea7b3", "id": 12449, "implemented": false, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 12447, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12444, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 12449, "src": "1587:10:90", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { 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