{ "fileName": "ERC165Checker.sol", "contractName": "ERC165Checker", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.7.0;\n\n/**\n * @dev Library used to query support of an interface declared via {IERC165}.\n *\n * Note that these functions return the actual result of the query: they do not\n * `revert` if an interface is not supported. It is up to the caller to decide\n * what to do in these cases.\n */\nlibrary ERC165Checker {\n // As per the EIP-165 spec, no interface should ever match 0xffffffff\n bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;\n\n /*\n * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7\n */\n bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;\n\n /**\n * @dev Returns true if `account` supports the {IERC165} interface,\n */\n function supportsERC165(address account) internal view returns (bool) {\n // Any contract that implements ERC165 must explicitly indicate support of\n // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid\n return _supportsERC165Interface(account, _INTERFACE_ID_ERC165) &&\n !_supportsERC165Interface(account, _INTERFACE_ID_INVALID);\n }\n\n /**\n * @dev Returns true if `account` supports the interface defined by\n * `interfaceId`. Support for {IERC165} itself is queried automatically.\n *\n * See {IERC165-supportsInterface}.\n */\n function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {\n // query support of both ERC165 as per the spec and support of _interfaceId\n return supportsERC165(account) &&\n _supportsERC165Interface(account, interfaceId);\n }\n\n /**\n * @dev Returns true if `account` supports all the interfaces defined in\n * `interfaceIds`. Support for {IERC165} itself is queried automatically.\n *\n * Batch-querying can lead to gas savings by skipping repeated checks for\n * {IERC165} support.\n *\n * See {IERC165-supportsInterface}.\n */\n function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {\n // query support of ERC165 itself\n if (!supportsERC165(account)) {\n return false;\n }\n\n // query support of each interface in _interfaceIds\n for (uint256 i = 0; i < interfaceIds.length; i++) {\n if (!_supportsERC165Interface(account, interfaceIds[i])) {\n return false;\n }\n }\n\n // all interfaces supported\n return true;\n }\n\n /**\n * @notice Query if a contract implements an interface, does not check ERC165 support\n * @param account The address of the contract to query for support of an interface\n * @param interfaceId The interface identifier, as specified in ERC-165\n * @return true if the contract at account indicates support of the interface with\n * identifier interfaceId, false otherwise\n * @dev Assumes that account contains a contract that supports ERC165, otherwise\n * the behavior of this method is undefined. This precondition can be checked\n * with {supportsERC165}.\n * Interface identification is specified in ERC-165.\n */\n function _supportsERC165Interface(address account, bytes4 interfaceId) private view returns (bool) {\n // success determines whether the staticcall succeeded and result determines\n // whether the contract at account indicates support of _interfaceId\n (bool success, bool result) = _callERC165SupportsInterface(account, interfaceId);\n\n return (success && result);\n }\n\n /**\n * @notice Calls the function with selector 0x01ffc9a7 (ERC165) and suppresses throw\n * @param account The address of the contract to query for support of an interface\n * @param interfaceId The interface identifier, as specified in ERC-165\n * @return success true if the STATICCALL succeeded, false otherwise\n * @return result true if the STATICCALL succeeded and the contract at account\n * indicates support of the interface with identifier interfaceId, false otherwise\n */\n function _callERC165SupportsInterface(address account, bytes4 interfaceId)\n private\n view\n returns (bool, bool)\n {\n bytes memory encodedParams = abi.encodeWithSelector(_INTERFACE_ID_ERC165, interfaceId);\n (bool success, bytes memory result) = account.staticcall{ gas: 30000 }(encodedParams);\n if (result.length < 32) return (false, false);\n return (success, abi.decode(result, (bool)));\n }\n}\n", "sourcePath": "contracts/introspection/ERC165Checker.sol", "sourceMap": "336:4192:11:-:0;;;;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "336:4192:11:-:0;;;;;;;;", "abi": [], "ast": { "absolutePath": "contracts/introspection/ERC165Checker.sol", "exportedSymbols": { "ERC165Checker": [ 1974 ] }, "id": 1975, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 1804, "literals": [ "solidity", "^", "0.7", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:11" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 1805, "nodeType": "StructuredDocumentation", "src": "58:277:11", "text": " @dev Library used to query support of an interface declared via {IERC165}.\n Note that these functions return the actual result of the query: they do not\n `revert` if an interface is not supported. It is up to the caller to decide\n what to do in these cases." }, "fullyImplemented": true, "id": 1974, "linearizedBaseContracts": [ 1974 ], "name": "ERC165Checker", "nodeType": "ContractDefinition", "nodes": [ { "constant": true, "id": 1808, "mutability": "constant", "name": "_INTERFACE_ID_INVALID", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1974, "src": "438:58:11", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 1806, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "438:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": { "argumentTypes": null, "hexValue": "30786666666666666666", "id": 1807, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "486:10:11", "subdenomination": null, "typeDescriptions": { "typeIdentifier": 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1894, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "2496:4:11", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 1861, "id": 1895, "nodeType": "Return", "src": "2489:11:11" } ] }, "documentation": { "id": 1852, "nodeType": "StructuredDocumentation", "src": "1642:324:11", "text": " @dev Returns true if `account` supports all the interfaces defined in\n `interfaceIds`. Support for {IERC165} itself is queried automatically.\n Batch-querying can lead to gas savings by skipping repeated checks for\n {IERC165} support.\n See {IERC165-supportsInterface}." }, "id": 1897, "implemented": true, "kind": "function", "modifiers": [], "name": "supportsAllInterfaces", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 1858, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1854, "mutability": "mutable", "name": "account", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1897, "src": "2002:15:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 1853, "name": "address", "nodeType": "ElementaryTypeName", "src": "2002:7:11", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1857, "mutability": "mutable", "name": "interfaceIds", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1897, "src": "2019:28:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_array$_t_bytes4_$dyn_memory_ptr", "typeString": "bytes4[]" }, "typeName": { "baseType": { "id": 1855, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "2019:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "id": 1856, "length": null, "nodeType": "ArrayTypeName", "src": "2019:8:11", "typeDescriptions": { "typeIdentifier": "t_array$_t_bytes4_$dyn_storage_ptr", "typeString": "bytes4[]" } }, "value": null, "visibility": "internal" } ], "src": "2001:47:11" }, "returnParameters": { "id": 1861, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1860, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1897, "src": "2072:4:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1859, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2072:4:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "2071:6:11" }, "scope": 1974, "src": "1971:536:11", "stateMutability": "view", "virtual": false, "visibility": "internal" }, { "body": { "id": 1921, "nodeType": "Block", "src": "3269:296:11", "statements": [ { "assignments": [ 1908, 1910 ], "declarations": [ { "constant": false, "id": 1908, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1921, "src": "3442:12:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1907, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3442:4:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1910, "mutability": "mutable", "name": "result", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1921, "src": "3456:11:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1909, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3456:4:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "id": 1915, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1912, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1900, "src": "3500:7:11", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 1913, "name": "interfaceId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1902, "src": "3509:11:11", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } ], "id": 1911, "name": "_callERC165SupportsInterface", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1973, "src": "3471:28:11", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_bytes4_$returns$_t_bool_$_t_bool_$", "typeString": "function (address,bytes4) view returns (bool,bool)" } }, "id": 1914, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3471:50:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bool_$", "typeString": "tuple(bool,bool)" } }, "nodeType": "VariableDeclarationStatement", "src": "3441:80:11" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 1918, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1916, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1908, "src": "3540:7:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "argumentTypes": null, "id": 1917, "name": "result", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1910, "src": "3551:6:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "3540:17:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 1919, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3539:19:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 1906, "id": 1920, "nodeType": "Return", "src": "3532:26:11" } ] }, "documentation": { "id": 1898, "nodeType": "StructuredDocumentation", "src": "2513:652:11", "text": " @notice Query if a contract implements an interface, does not check ERC165 support\n @param account The address of the contract to query for support of an interface\n @param interfaceId The interface identifier, as specified in ERC-165\n @return true if the contract at account indicates support of the interface with\n identifier interfaceId, false otherwise\n @dev Assumes that account contains a contract that supports ERC165, otherwise\n the behavior of this method is undefined. This precondition can be checked\n with {supportsERC165}.\n Interface identification is specified in ERC-165." }, "id": 1922, "implemented": true, "kind": "function", "modifiers": [], "name": "_supportsERC165Interface", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 1903, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1900, "mutability": "mutable", "name": "account", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1922, "src": "3204:15:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 1899, "name": "address", "nodeType": "ElementaryTypeName", "src": "3204:7:11", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1902, "mutability": "mutable", "name": "interfaceId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1922, "src": "3221:18:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 1901, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "3221:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": null, "visibility": "internal" } ], "src": "3203:37:11" }, "returnParameters": { "id": 1906, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1905, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1922, "src": "3263:4:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1904, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3263:4:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3262:6:11" }, "scope": 1974, "src": "3170:395:11", "stateMutability": "view", "virtual": false, "visibility": "private" }, { "body": { "id": 1972, "nodeType": "Block", "src": "4219:307:11", "statements": [ { "assignments": [ 1935 ], "declarations": [ { "constant": false, "id": 1935, "mutability": "mutable", "name": "encodedParams", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1972, "src": "4229:26:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1934, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4229:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 1941, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1938, "name": "_INTERFACE_ID_ERC165", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1811, "src": "4281:20:11", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "argumentTypes": null, "id": 1939, "name": "interfaceId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1927, "src": "4303:11:11", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } ], "expression": { "argumentTypes": null, "id": 1936, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "4258:3:11", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 1937, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4258:22:11", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 1940, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4258:57:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "4229:86:11" }, { "assignments": [ 1943, 1945 ], "declarations": [ { "constant": false, "id": 1943, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1972, "src": "4326:12:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 1942, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4326:4:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1945, "mutability": "mutable", "name": "result", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1972, "src": "4340:19:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1944, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4340:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 1952, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1950, "name": "encodedParams", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1935, "src": "4396:13:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "id": 1946, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1925, "src": "4363:7:11", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 1947, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "staticcall", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4363:18:11", "typeDescriptions": { "typeIdentifier": "t_function_barestaticcall_view$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) view returns (bool,bytes memory)" } }, "id": 1949, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "names": [ "gas" ], "nodeType": "FunctionCallOptions", "options": [ { "argumentTypes": null, "hexValue": "3330303030", "id": 1948, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4388:5:11", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_30000_by_1", "typeString": "int_const 30000" }, "value": "30000" } ], "src": "4363:32:11", "typeDescriptions": { "typeIdentifier": "t_function_barestaticcall_view$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$gas", "typeString": "function (bytes memory) view returns (bool,bytes memory)" } }, "id": 1951, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4363:47:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "4325:85:11" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1956, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1953, "name": "result", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1945, "src": "4424:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1954, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4424:13:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "hexValue": "3332", "id": 1955, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4440:2:11", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "4424:18:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 1961, "nodeType": "IfStatement", "src": "4420:45:11", "trueBody": { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "hexValue": "66616c7365", "id": 1957, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4452:5:11", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, { "argumentTypes": null, "hexValue": "66616c7365", "id": 1958, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "4459:5:11", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" } ], "id": 1959, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "4451:14:11", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bool_$", "typeString": "tuple(bool,bool)" } }, "functionReturnParameters": 1933, "id": 1960, "nodeType": "Return", "src": "4444:21:11" } }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "id": 1962, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1943, "src": "4483:7:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1965, "name": "result", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1945, "src": "4503:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "components": [ { "argumentTypes": null, "id": 1967, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4512:4:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_bool_$", "typeString": "type(bool)" }, "typeName": { "id": 1966, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4512:4:11", "typeDescriptions": { "typeIdentifier": null, "typeString": null } } } ], "id": 1968, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "4511:6:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_bool_$", "typeString": "type(bool)" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_type$_t_bool_$", "typeString": "type(bool)" } ], "expression": { "argumentTypes": null, "id": 1963, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "4492:3:11", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 1964, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "decode", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4492:10:11", "typeDescriptions": { "typeIdentifier": "t_function_abidecode_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 1969, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4492:26:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 1970, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "4482:37:11", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bool_$", "typeString": "tuple(bool,bool)" } }, "functionReturnParameters": 1933, "id": 1971, "nodeType": "Return", "src": "4475:44:11" } ] }, "documentation": { "id": 1923, "nodeType": "StructuredDocumentation", "src": "3571:506:11", "text": " @notice Calls the function with selector 0x01ffc9a7 (ERC165) and suppresses throw\n @param account The address of the contract to query for support of an interface\n @param interfaceId The interface identifier, as specified in ERC-165\n @return success true if the STATICCALL succeeded, false otherwise\n @return result true if the STATICCALL succeeded and the contract at account\n indicates support of the interface with identifier interfaceId, false otherwise" }, "id": 1973, "implemented": true, "kind": "function", "modifiers": [], "name": "_callERC165SupportsInterface", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 1928, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1925, "mutability": "mutable", "name": "account", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1973, "src": "4120:15:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 1924, "name": "address", "nodeType": "ElementaryTypeName", "src": "4120:7:11", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1927, "mutability": "mutable", "name": "interfaceId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 1973, "src": "4137:18:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { 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