{ "fileName": "ERC721Burnable.sol", "contractName": "ERC721Burnable", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.7.0;\n\nimport \"../../GSN/Context.sol\";\nimport \"./ERC721.sol\";\n\n/**\n * @title ERC721 Burnable Token\n * @dev ERC721 Token that can be irreversibly burned (destroyed).\n */\nabstract contract ERC721Burnable is Context, ERC721 {\n /**\n * @dev Burns `tokenId`. See {ERC721-_burn}.\n *\n * Requirements:\n *\n * - The caller must own `tokenId` or be an approved operator.\n */\n function burn(uint256 tokenId) public virtual {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721Burnable: caller is not owner nor approved\");\n _burn(tokenId);\n }\n}\n", "sourcePath": "contracts/token/ERC721/ERC721Burnable.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": "", "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": "burn", "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": "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" } ], "ast": { "absolutePath": "contracts/token/ERC721/ERC721Burnable.sol", "exportedSymbols": { "ERC721Burnable": [ 11061 ] }, "id": 11062, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 11033, "literals": [ "solidity", "^", "0.7", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:93" }, { "absolutePath": "contracts/GSN/Context.sol", "file": "../../GSN/Context.sol", "id": 11034, "nodeType": "ImportDirective", "scope": 11062, "sourceUnit": 23, "src": "58:31:93", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/token/ERC721/ERC721.sol", "file": "./ERC721.sol", "id": 11035, "nodeType": "ImportDirective", "scope": 11062, "sourceUnit": 11032, "src": "90:22:93", "symbolAliases": [], "unitAlias": "" }, { "abstract": true, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 11037, "name": "Context", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 22, "src": "256:7:93", "typeDescriptions": { "typeIdentifier": "t_contract$_Context_$22", "typeString": "contract Context" } }, "id": 11038, "nodeType": "InheritanceSpecifier", "src": "256:7:93" }, { "arguments": null, "baseName": { "contractScope": null, "id": 11039, "name": "ERC721", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 11031, "src": "265:6:93", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC721_$11031", "typeString": "contract ERC721" } }, "id": 11040, "nodeType": "InheritanceSpecifier", "src": "265:6:93" } ], "contractDependencies": [ 22, 1802, 2048, 11031, 11241, 11272, 11299 ], "contractKind": "contract", "documentation": { "id": 11036, "nodeType": "StructuredDocumentation", "src": "114:105:93", "text": " @title ERC721 Burnable Token\n @dev ERC721 Token that can be irreversibly burned (destroyed)." }, "fullyImplemented": false, "id": 11061, "linearizedBaseContracts": [ 11061, 11031, 11272, 11299, 11241, 1802, 2048, 22 ], "name": "ERC721Burnable", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 11059, "nodeType": "Block", "src": "491:195:93", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 11048, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10, "src": "580:10:93", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_payable_$", "typeString": "function () view returns (address payable)" } }, "id": 11049, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "580:12:93", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, { "argumentTypes": null, "id": 11050, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11043, "src": "594:7:93", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11047, "name": "_isApprovedOrOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10664, "src": "561:18:93", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) view returns (bool)" } }, "id": 11051, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "561:41:93", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4552433732314275726e61626c653a2063616c6c6572206973206e6f74206f776e6572206e6f7220617070726f766564", "id": 11052, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "604:50:93", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_ee6b7e810d7b317242d4688e6943ff4dd7897bb01d903b1a666812481b12a4f1", "typeString": "literal_string \"ERC721Burnable: caller is not owner nor approved\"" }, "value": "ERC721Burnable: caller is not owner nor approved" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_ee6b7e810d7b317242d4688e6943ff4dd7897bb01d903b1a666812481b12a4f1", "typeString": "literal_string \"ERC721Burnable: caller is not owner nor approved\"" } ], "id": 11046, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "553:7:93", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 11053, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "553:102:93", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11054, "nodeType": "ExpressionStatement", "src": "553:102:93" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 11056, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 11043, "src": "671:7:93", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 11055, "name": "_burn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 10835, "src": "665:5:93", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_uint256_$returns$__$", "typeString": "function (uint256)" } }, "id": 11057, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "665:14:93", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 11058, "nodeType": "ExpressionStatement", "src": "665:14:93" } ] }, "documentation": { "id": 11041, "nodeType": "StructuredDocumentation", "src": "278:162:93", "text": " @dev Burns `tokenId`. See {ERC721-_burn}.\n Requirements:\n - The caller must own `tokenId` or be an approved operator." }, "functionSelector": "42966c68", "id": 11060, "implemented": true, "kind": "function", "modifiers": [], "name": "burn", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 11044, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11043, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 11060, "src": "459:15:93", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 11042, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "459:7:93", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "458:17:93" }, "returnParameters": { "id": 11045, "nodeType": "ParameterList", "parameters": [], "src": "491:0:93" }, "scope": 11061, "src": "445:241:93", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" } ], "scope": 11062, "src": "220:468:93" } ], "src": "33:656:93" }, "bytecode": "0x", "deployedBytecode": "0x", "compiler": { "name": "solc", "version": "0.7.0+commit.9e61f92b.Emscripten.clang", "optimizer": { "enabled": false, "runs": 200 }, "evmVersion": "petersburg" } }