@ethsub/sol

{ "contractName": "ERC165Checker", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.6.12+commit.27d51765\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"Library used to query support of an interface declared via {IERC165}. Note that these functions return the actual result of the query: they do not `revert` if an interface is not supported. It is up to the caller to decide what to do in these cases.\",\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/introspection/ERC165Checker.sol\":\"ERC165Checker\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/introspection/ERC165Checker.sol\":{\"keccak256\":\"0x1bdefceaba99e08a6c30400bc686e6380c1e914887bf5780db14f965c09aa9d3\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://fa31e8df5c7a5f3434977d3a881ee322c4e81f8486aec4bb859bebd20f23d805\",\"dweb:/ipfs/QmShFfnjPytP2ooLtDj7f2XULXgbsRj4xjrFc9qm9kRe79\"]}},\"version\":1}", "bytecode": "0x60566023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220881c298687e7ae98011f7a3c8464e2e5eec15841d56a2b874a6c1e1b210f926b64736f6c634300060c0033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220881c298687e7ae98011f7a3c8464e2e5eec15841d56a2b874a6c1e1b210f926b64736f6c634300060c0033", "immutableReferences": {}, "sourceMap": "344:5246:3:-:0;;;;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "344:5246:3:-:0;;;;;;;;", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.6.2 <0.8.0;\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 a boolean array where each value corresponds to the\n * interfaces passed in and whether they're supported or not. This allows\n * you to batch check interfaces for a contract where your expectation\n * is that some interfaces may not be supported.\n *\n * See {IERC165-supportsInterface}.\n *\n * _Available since v3.4._\n */\n function getSupportedInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool[] memory) {\n // an array of booleans corresponding to interfaceIds and whether they're supported or not\n bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);\n\n // query support of ERC165 itself\n if (supportsERC165(account)) {\n // query support of each interface in interfaceIds\n for (uint256 i = 0; i < interfaceIds.length; i++) {\n interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);\n }\n }\n\n return interfaceIdsSupported;\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": "@openzeppelin/contracts/introspection/ERC165Checker.sol", "ast": { "absolutePath": "@openzeppelin/contracts/introspection/ERC165Checker.sol", "exportedSymbols": { "ERC165Checker": [ 570 ] }, "id": 571, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 344, "literals": [ "solidity", ">=", "0.6", ".2", "<", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "33:31:3" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 345, "nodeType": "StructuredDocumentation", "src": "66:277:3", "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": 570, "linearizedBaseContracts": [ 570 ], "name": "ERC165Checker", "nodeType": "ContractDefinition", "nodes": [ { "constant": true, "id": 348, "mutability": "constant", "name": "_INTERFACE_ID_INVALID", "nodeType": "VariableDeclaration", "overrides": null, "scope": 570, "src": "446:58:3", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 346, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "446:6:3", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": { "argumentTypes": null, "hexValue": "30786666666666666666", "id": 347, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "494:10:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": 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