{ "contractName": "ERC165", "abi": [ { "inputs": [], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "constant": true, "inputs": [ { "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "bytecode": "0x", "deployedBytecode": "0x", "sourceMap": "", "deployedSourceMap": "", "source": "pragma solidity ^0.4.24;\n\nimport \"./IERC165.sol\";\n\n/**\n * @title ERC165\n * @author Matt Condon (@shrugs)\n * @dev Implements ERC165 using a lookup table.\n */\ncontract ERC165 is IERC165 {\n\n bytes4 private constant _InterfaceId_ERC165 = 0x01ffc9a7;\n /**\n * 0x01ffc9a7 ===\n * bytes4(keccak256('supportsInterface(bytes4)'))\n */\n\n /**\n * @dev a mapping of interface id to whether or not it's supported\n */\n mapping(bytes4 => bool) private _supportedInterfaces;\n\n /**\n * @dev A contract implementing SupportsInterfaceWithLookup\n * implement ERC165 itself\n */\n constructor()\n internal\n {\n _registerInterface(_InterfaceId_ERC165);\n }\n\n /**\n * @dev implement supportsInterface(bytes4) using a lookup table\n */\n function supportsInterface(bytes4 interfaceId)\n external\n view\n returns (bool)\n {\n return _supportedInterfaces[interfaceId];\n }\n\n /**\n * @dev internal method for registering an interface\n */\n function _registerInterface(bytes4 interfaceId)\n internal\n {\n require(interfaceId != 0xffffffff);\n _supportedInterfaces[interfaceId] = true;\n }\n}\n", "sourcePath": "openzeppelin-solidity/contracts/introspection/ERC165.sol", "ast": { "absolutePath": "openzeppelin-solidity/contracts/introspection/ERC165.sol", "exportedSymbols": { "ERC165": [ 4704 ] }, "id": 4705, "nodeType": "SourceUnit", "nodes": [ { "id": 4655, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:10" }, { "absolutePath": "openzeppelin-solidity/contracts/introspection/IERC165.sol", "file": 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