{ "contractName": "ERC165", "abi": [ { "inputs": [], "stateMutability": "nonpayable", "type": "constructor" }, { "inputs": [ { "internalType": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.6.6+commit.6c089d02\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Implementation of the {IERC165} interface. * Contracts may inherit from this and call {_registerInterface} to declare their support of an interface.\",\"methods\":{\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}. * Time complexity O(1), guaranteed to always use less than 30 000 gas.\"}}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/introspection/ERC165.sol\":\"ERC165\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/introspection/ERC165.sol\":{\"keccak256\":\"0x98aa1380fd49a255d6cbea58558ea76bff35c59b218671fde8842907b44e7390\",\"urls\":[\"bzz-raw://613eaff66d4c270ddd87448c06267b6e043ef8c8223cb39d8767bc9daa9cb1ec\",\"dweb:/ipfs/Qmcg56orudv25ghmnZCxN37HwNKCXmTTDxj5cyoYYnvHTg\"]},\"@openzeppelin/contracts/introspection/IERC165.sol\":{\"keccak256\":\"0x9175561c374ec1fc33045e5dfdde2057e63e00debf432875f9e1e3395d99c149\",\"urls\":[\"bzz-raw://b0167043c1938b56904deaa481a73041aa4a9e054c60db0b0dfbebfe7869c06a\",\"dweb:/ipfs/QmUoYjhymBr6WUpExKgRvKxXD5fcdpQEe1o9ResKZu6CC5\"]}},\"version\":1}", "bytecode": "0x", "deployedBytecode": "0x", "immutableReferences": {}, "sourceMap": "", "deployedSourceMap": "", "source": "pragma solidity ^0.6.0;\n\nimport \"./IERC165.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 ERC165 is 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 constructor () internal {\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 * @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", "sourcePath": "@openzeppelin/contracts/introspection/ERC165.sol", "ast": { "absolutePath": "@openzeppelin/contracts/introspection/ERC165.sol", "exportedSymbols": { "ERC165": [ 10917 ] }, "id": 10918, "nodeType": "SourceUnit", "nodes": [ { "id": 10863, "literals": [ "solidity", "^", "0.6", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:67" }, { "absolutePath": "@openzeppelin/contracts/introspection/IERC165.sol", "file": "./IERC165.sol", "id": 10864, "nodeType": "ImportDirective", "scope": 10918, "sourceUnit": 10930, "src": "25:23:67", 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Support of the actual ERC165 interface is automatic and\nregistering its interface id is not required.\n * See {IERC165-supportsInterface}.\n * Requirements:\n * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`)." }, "id": 10916, "implemented": true, "kind": "function", "modifiers": [], "name": "_registerInterface", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 10900, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 10899, "mutability": "mutable", "name": "interfaceId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10916, "src": "1477:18:67", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 10898, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "1477:6:67", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": null, "visibility": "internal" } ], "src": 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Support of the actual ERC165 interface is automatic and\nregistering its interface id is not required.\n * See {IERC165-supportsInterface}.\n * Requirements:\n * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`)." }, "id": 10916, "implemented": true, "kind": "function", "modifiers": [], "name": "_registerInterface", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 10900, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 10899, "mutability": "mutable", "name": "interfaceId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 10916, "src": "1477:18:67", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 10898, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "1477:6:67", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": null, "visibility": "internal" } ], "src": "1476:20:67" }, "returnParameters": { "id": 10901, "nodeType": "ParameterList", "parameters": [], "src": "1514:0:67" }, "scope": 10917, "src": "1449:198:67", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" } ], "scope": 10918, "src": "222:1427:67" } ], "src": "0:1650:67" }, "compiler": { "name": "solc", "version": "0.6.6+commit.6c089d02.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.1.0", "updatedAt": "2020-04-21T18:10:34.964Z", "devdoc": { "details": "Implementation of the {IERC165} interface. * Contracts may inherit from this and call {_registerInterface} to declare their support of an interface.", "methods": { "supportsInterface(bytes4)": { "details": "See {IERC165-supportsInterface}. * Time complexity O(1), guaranteed to always use less than 30 000 gas." } } }, "userdoc": { "methods": {} } }