{ "fileName": "ERC165.sol", "contractName": "ERC165UpgradeSafe", "source": "pragma solidity ^0.6.0;\n\nimport \"./IERC165.sol\";\nimport \"../Initializable.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts may inherit from this and call {_registerInterface} to declare\n * their support of an interface.\n */\ncontract ERC165UpgradeSafe is Initializable, IERC165 {\n /*\n * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7\n */\n bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;\n\n /**\n * @dev Mapping of interface ids to whether or not it's supported.\n */\n mapping(bytes4 => bool) private _supportedInterfaces;\n\n\n function __ERC165_init() internal initializer {\n __ERC165_init_unchained();\n }\n\n function __ERC165_init_unchained() internal initializer {\n\n\n // Derived contracts need only register support for their own interfaces,\n // we register support for ERC165 itself here\n _registerInterface(_INTERFACE_ID_ERC165);\n\n }\n\n\n /**\n * @dev See {IERC165-supportsInterface}.\n *\n * Time complexity O(1), guaranteed to always use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) public view override returns (bool) {\n return _supportedInterfaces[interfaceId];\n }\n\n /**\n * @dev Registers the contract as an implementer of the interface defined by\n * `interfaceId`. Support of the actual ERC165 interface is automatic and\n * registering its interface id is not required.\n *\n * See {IERC165-supportsInterface}.\n *\n * Requirements:\n *\n * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).\n */\n function _registerInterface(bytes4 interfaceId) internal virtual {\n require(interfaceId != 0xffffffff, \"ERC165: invalid interface id\");\n _supportedInterfaces[interfaceId] = true;\n }\n\n uint256[49] private __gap;\n}\n", "sourcePath": "contracts/introspection/ERC165.sol", "sourceMap": "253:1616:12:-:0;;;;5:9:-1;2:2;;;27:1;24;17:12;2:2;253:1616:12;;;;;;;", "deployedSourceMap": "253:1616:12:-:0;;;;5:9:-1;2:2;;;27:1;24;17:12;2:2;253:1616:12;;;;;;;;;;;;;;;;12:1:-1;9;2:12;1103:140:12;;;;;;15:2:-1;10:3;7:11;4:2;;;31:1;28;21:12;4:2;-1:-1;1103:140:12;-1:-1:-1;;;;;;1103:140:12;;:::i;:::-;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;;1203:33:12;1180:4;1203:33;;;:20;:33;;;;;;;;;1103:140::o", "abi": [ { "inputs": [ { "internalType": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" } ], "ast": { "absolutePath": "contracts/introspection/ERC165.sol", "exportedSymbols": { "ERC165UpgradeSafe": [ 2511 ] }, "id": 2512, "nodeType": "SourceUnit", "nodes": [ { "id": 2439, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:12" }, { "absolutePath": "contracts/introspection/IERC165.sol", "file": "./IERC165.sol", "id": 2440, "nodeType": "ImportDirective", "scope": 2512, "sourceUnit": 2780, "src": "25:23:12", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/Initializable.sol", "file": "../Initializable.sol", "id": 2441, "nodeType": "ImportDirective", "scope": 2512, "sourceUnit": 1408, "src": "49:30:12", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, 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