witnet-solidity-bridge

{ "contractName": "OVM_GasPriceOracle", "abi": [ { "inputs": [ { "internalType": "bytes", "name": "_data", "type": "bytes" } ], "name": "getL1Fee", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.8.30+commit.73712a01\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"bytes\",\"name\":\"_data\",\"type\":\"bytes\"}],\"name\":\"getL1Fee\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"project:/contracts/core/trustable/WitOracleTrustableOvm2.sol\":\"OVM_GasPriceOracle\"},\"evmVersion\":\"prague\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol\":{\"keccak256\":\"0xdb4d24ee2c087c391d587cd17adfe5b3f9d93b3110b1388c2ab6c7c0ad1dcd05\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ab7b6d5b9e2b88176312967fe0f0e78f3d9a1422fa5e4b64e2440c35869b5d08\",\"dweb:/ipfs/QmXKYWWyzcLg1B2k7Sb1qkEXgLCYfXecR9wYW5obRzWP1Q\"]},\"@openzeppelin/contracts/access/Ownable.sol\":{\"keccak256\":\"0xff6d0bb2e285473e5311d9d3caacb525ae3538a80758c10649a4d61029b017bb\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://8ed324d3920bb545059d66ab97d43e43ee85fd3bd52e03e401f020afb0b120f6\",\"dweb:/ipfs/QmfEckWLmZkDDcoWrkEvMWhms66xwTLff9DDhegYpvHo1a\"]},\"@openzeppelin/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0x74ed01eb66b923d0d0cfe3be84604ac04b76482a55f9dd655e1ef4d367f95bc2\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://5282825a626cfe924e504274b864a652b0023591fa66f06a067b25b51ba9b303\",\"dweb:/ipfs/QmeCfPykghhMc81VJTrHTC7sF6CRvaA1FXVq2pJhwYp1dV\"]},\"@openzeppelin/contracts/utils/Context.sol\":{\"keccak256\":\"0x493033a8d1b176a037b2cc6a04dad01a5c157722049bbecf632ca876224dd4b2\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6a708e8a5bdb1011c2c381c9a5cfd8a9a956d7d0a9dc1bd8bcdaf52f76ef2f12\",\"dweb:/ipfs/Qmax9WHBnVsZP46ZxEMNRQpLQnrdE4dK8LehML1Py8FowF\"]},\"@openzeppelin/contracts/utils/ReentrancyGuard.sol\":{\"keccak256\":\"0x11a5a79827df29e915a12740caf62fe21ebe27c08c9ae3e09abe9ee3ba3866d3\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://3cf0c69ab827e3251db9ee6a50647d62c90ba580a4d7bbff21f2bea39e7b2f4a\",\"dweb:/ipfs/QmZiKwtKU1SBX4RGfQtY7PZfiapbbu6SZ9vizGQD9UHjRA\"]},\"@openzeppelin/contracts/utils/introspection/ERC165.sol\":{\"keccak256\":\"0x2d9dc2fe26180f74c11c13663647d38e259e45f95eb88f57b61d2160b0109d3e\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://81233d1f98060113d9922180bb0f14f8335856fe9f339134b09335e9f678c377\",\"dweb:/ipfs/QmWh6R35SarhAn4z2wH8SU456jJSYL2FgucfTFgbHJJN4E\"]},\"@openzeppelin/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x8891738ffe910f0cf2da09566928589bf5d63f4524dd734fd9cedbac3274dd5c\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://971f954442df5c2ef5b5ebf1eb245d7105d9fbacc7386ee5c796df1d45b21617\",\"dweb:/ipfs/QmadRjHbkicwqwwh61raUEapaVEtaLMcYbQZWs9gUkgj3u\"]},\"project:/contracts/WitOracle.sol\":{\"keccak256\":\"0x7f20eab15140df459753dfa8e406b826918b56ebe2c46456f9d04345c02629d1\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://e0573ce3d48200c71d8235a1a8c055b706420b2037bd21336f3c61713c3b8349\",\"dweb:/ipfs/QmY7BnVaNXFtJs1BFdeaa7dQfvUVoZyfwtv9HuToCxUUHU\"]},\"project:/contracts/WitOraclePushOnly.sol\":{\"keccak256\":\"0x659b4746c5a773b554b7a94bea3f55a995a8f850d750108302a8face9d1c833c\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://291c6b4cd5c0f223ee63cc8cee2e228f47e1344a935eb89b6ef8f993eb5ce18e\",\"dweb:/ipfs/QmeKNLaVURv4N5jz5z67WQ4wyUUucqMaYLZQ2NnuuNyyPS\"]},\"project:/contracts/WitOracleRadonRegistry.sol\":{\"keccak256\":\"0xc9bd0ab02e13b36fe4072868ae978a230c5132a702d6594f11270ec5e7926e09\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://8321305b131abec96c492302163d95f8777106f74a0d42f5f50fdf60d2b3a381\",\"dweb:/ipfs/QmRx7FGWPkC41afPuJpBTDQ85wjH95Dbi3qAxVNfNZUsWe\"]},\"project:/contracts/core/WitnetProxy.sol\":{\"keccak256\":\"0x6f0ec2c544192c9439bde88f5ed4efec5bdef506cb0dcb739c29329a798033fe\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ca05338334632aab3aef3c17a4b8686251ec488da49b9fcd3712642e57e0ce2a\",\"dweb:/ipfs/QmZk1uDdytKFii4TXUnJkFBBB3CZVSPKKR85ugFjWUTufS\"]},\"project:/contracts/core/WitnetUpgradableBase.sol\":{\"keccak256\":\"0x4cea0415b77897e151454ce87c1e20b7dc9f232de72b54a6740c90e076f7e1b9\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://e0b803611c3a863ac5806b16e7d2a48b0e062fece262c750d121b5e9e17eb082\",\"dweb:/ipfs/QmVhFt1TkbkZ48jLsN5LgnpzpTdoMbfqGyMSJxjaEqisht\"]},\"project:/contracts/core/base/WitOracleBasePushOnly.sol\":{\"keccak256\":\"0xdf4be00f732674d6a1a83fbb5801571690623a17b7388613af3a3debadf9ce2d\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://d9b4b8a611ed9186249e30fcaeecc1d7bbda50338e794d5b65865f885f20ec6e\",\"dweb:/ipfs/Qme8xqsdQqdyDuy1DYijquG6LGJHqRzyruZ1MR6hPJCxmY\"]},\"project:/contracts/core/base/WitOracleBaseQueriable.sol\":{\"keccak256\":\"0xed332c1131be86c1b97223e0488488f7091fe84f21b88fd2724cb7c0d91397ae\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://c8c48b617f0696470db891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"bytecode": "0x", "deployedBytecode": "0x", "immutableReferences": {}, "generatedSources": [], "deployedGeneratedSources": [], "sourceMap": "", "deployedSourceMap": "", "source": "// SPDX-License-Identifier: MIT\r\n\r\npragma solidity >=0.8.0 <0.9.0;\r\n\r\nimport \"../base/WitOracleBaseQueriableTrustable.sol\";\r\n\r\n// solhint-disable-next-line\r\ninterface OVM_GasPriceOracle {\r\n function getL1Fee(bytes calldata _data) external view returns (uint256);\r\n}\r\n\r\n/// @title Queriable WitOracle \"trustable\" implementation contract for OVM2 chains. \r\n/// @author The Witnet Foundation\r\ncontract WitOracleTrustableOvm2\r\n is \r\n WitOracleBaseQueriableTrustable\r\n{\r\n function class() virtual override public view returns (string memory) {\r\n return type(WitOracleTrustableOvm2).name;\r\n }\r\n\r\n constructor(\r\n EvmImmutables memory _immutables,\r\n WitOracleRadonRegistry _registry,\r\n bytes32 _versionTag\r\n )\r\n WitOracleBaseQueriable(\r\n _immutables,\r\n _registry\r\n )\r\n WitOracleBaseQueriableTrustable(_versionTag)\r\n {\r\n __gasPriceOracleL1 = OVM_GasPriceOracle(0x420000000000000000000000000000000000000F);\r\n }\r\n\r\n OVM_GasPriceOracle immutable internal __gasPriceOracleL1;\r\n\r\n function _getCurrentL1Fee(uint16 _resultMaxSize) virtual internal view returns (uint256) {\r\n return __gasPriceOracleL1.getL1Fee(\r\n abi.encodePacked(\r\n hex\"06eb2c42000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000ffffffffff00000000000000000000000000000000000000000000000000000000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000ff\",\r\n _resultMaxBuffer(_resultMaxSize)\r\n )\r\n );\r\n }\r\n\r\n function _resultMaxBuffer(uint16 _resultMaxSize) private pure returns (bytes memory) {\r\n unchecked {\r\n uint256[] memory _buffer = new uint256[](_resultMaxSize / 32);\r\n for (uint _ix = 0; _ix < _buffer.length; _ix ++) {\r\n _buffer[_ix] = type(uint256).max;\r\n }\r\n return abi.encodePacked(\r\n _buffer,\r\n uint256((1 << (_resultMaxSize % 32)) - 1)\r\n );\r\n }\r\n }\r\n\r\n\r\n // ================================================================================================================\r\n // --- Overrides 'IWitOracle' -------------------------------------------------------------------------------------\r\n\r\n /// @notice Estimate the minimum reward required for posting a data request.\r\n /// @param _evmGasPrice Expected gas price to pay upon posting the data request.\r\n function estimateBaseFee(uint256 _evmGasPrice)\r\n public view\r\n virtual override\r\n returns (uint256)\r\n {\r\n return _getCurrentL1Fee(32) + WitOracleBaseQueriable.estimateBaseFee(_evmGasPrice);\r\n }\r\n\r\n /// @notice Estimate the minimum reward required for posting a data request with a callback.\r\n /// @param _gasPrice Expected gas price to pay upon posting the data request.\r\n /// @param _callbackGas Maximum gas to be spent when reporting the data request result.\r\n function estimateBaseFeeWithCallback(uint256 _gasPrice, uint24 _callbackGas)\r\n public view\r\n virtual override\r\n returns (uint256)\r\n {\r\n return _getCurrentL1Fee(32) + WitOracleBaseQueriable.estimateBaseFeeWithCallback(_gasPrice, _callbackGas);\r\n }\r\n\r\n /// @notice Estimate the extra reward (i.e. over the base fee) to be paid when posting a new\r\n /// @notice data query in order to avoid getting provable \"too low incentives\" results from\r\n /// @notice the Wit/Oracle blockchain. \r\n /// @dev The extra fee gets calculated in proportion to:\r\n /// @param _evmGasPrice Tentative EVM gas price at the moment the query result is ready.\r\n /// @param _evmWitPrice Tentative nanoWit price in Wei at the moment the query is solved on the Wit/Oracle blockchain.\r\n /// @param _querySLA The query SLA data security parameters as required for the Wit/Oracle blockchain. \r\n function estimateExtraFee(\r\n uint256 _evmGasPrice, \r\n uint256 _evmWitPrice, \r\n Witnet.QuerySLA memory _querySLA\r\n )\r\n public view\r\n virtual override\r\n returns (uint256)\r\n {\r\n return (\r\n _getCurrentL1Fee(_querySLA.witResultMaxSize)\r\n + WitOracleBaseQueriable.estimateExtraFee(\r\n _evmGasPrice,\r\n _evmWitPrice,\r\n _querySLA\r\n )\r\n );\r\n }\r\n\r\n\r\n // ================================================================================================================\r\n // --- Overrides 'IWitOracleLegacy' -------------------------------------------------------------------------------\r\n\r\n /// @notice Estimate the minimum reward required for posting a data request.\r\n /// @dev Underestimates if the size of returned data is greater than `_resultMaxSize`. \r\n /// @param _gasPrice Expected gas price to pay upon posting the data request.\r\n /// @param _resultMaxSize Maximum expected size of returned data (in bytes).\r\n function estimateBaseFee(uint256 _gasPrice, uint16 _resultMaxSize)\r\n public view \r\n virtual override\r\n returns (uint256)\r\n {\r\n return _getCurrentL1Fee(_resultMaxSize) + WitOracleBaseQueriableTrustable.estimateBaseFee(_gasPrice, _resultMaxSize);\r\n }\r\n\r\n\r\n // ================================================================================================================\r\n // --- Overrides 'IWitOracleQueriableTrustableReporter' --------------------------------------------------------------------------\r\n\r\n /// @notice Estimates the actual earnings (or loss), in WEI, that a reporter would get by reporting result to given query,\r\n /// @notice based on the gas price of the calling transaction. Data requesters should consider upgrading the reward on \r\n /// @notice queries providing no actual earnings.\r\n function estimateReportEarnings(\r\n uint256[] calldata _queryIds, \r\n bytes calldata _evmMsgData,\r\n uint256 _evmGasPrice, \r\n uint256 _evmWitPrice\r\n )\r\n external view\r\n virtual override\r\n returns (uint256 _revenues, uint256 _expenses)\r\n {\r\n for (uint _ix = 0; _ix < _queryIds.length; _ix ++) {\r\n uint256 _queryId = _queryIds[_ix];\r\n if (\r\n getQueryStatus(_queryId) == Witnet.QueryStatus.Posted\r\n ) {\r\n WitOracleDataLib.Query storage __query = WitOracleDataLib.seekQuery(_queryId);\r\n if (__query.request.callbackGas > 0) {\r\n _expenses += (\r\n WitOracleBaseQueriable.estimateBaseFeeWithCallback(_evmGasPrice, __query.request.callbackGas)\r\n + WitOracleBaseQueriable.estimateExtraFee(\r\n _evmGasPrice, _evmWitPrice,\r\n Witnet.QuerySLA({\r\n witResultMaxSize: uint16(0),\r\n witCommitteeSize: __query.slaParams.witCommitteeSize,\r\n witUnitaryReward: __query.slaParams.witUnitaryReward\r\n })\r\n )\r\n );\r\n } else {\r\n _expenses += (\r\n WitOracleBaseQueriable.estimateBaseFee(_evmGasPrice)\r\n + WitOracleBaseQueriable.estimateExtraFee(\r\n _evmGasPrice, _evmWitPrice,\r\n __query.slaParams\r\n )\r\n );\r\n }\r\n _expenses += __query.slaParams.witUnitaryReward * _evmWitPrice;\r\n _revenues += Witnet.QueryEvmReward.unwrap(__query.reward);\r\n }\r\n }\r\n _expenses += __gasPriceOracleL1.getL1Fee(_evmMsgData);\r\n }\r\n}\r\n", "sourcePath": "C:\\Users\\guill\\github\\guidiaz\\witnet-solidity-bridge\\contracts\\core\\trustable\\WitOracleTrustableOvm2.sol", "ast": { "absolutePath": "project:/contracts/core/trustable/WitOracleTrustableOvm2.sol", "exportedSymbols": { "Bech32": [ 31372 ], "Context": [ 523 ], "ERC165": [ 616 ], "IERC165": [ 628 ], "IERC20": [ 493 ], "IWitAppliance": [ 26514 ], "IWitOracle": [ 26581 ], "IWitOracleAppliance": [ 26593 ], "IWitOracleLegacy": [ 28786 ], "IWitOracleQueriable": [ 26795 ], "IWitOracleQueriableConsumer": [ 26815 ], "IWitOracleQueriableEvents": [ 26892 ], "IWitOracleQueriableExperimental": [ 26964 ], "IWitOracleQueriableTrustableReporter": [ 27056 ], "IWitOracleRadonRegistry": [ 27394 ], "IWitOracleRadonRegistryEvents": [ 27414 ], "IWitOracleRequest": [ 28922 ], "IWitOracleRequestTemplate": [ 29115 ], "IWitOracleTrustableAdmin": [ 27628 ], "Initializable": [ 267 ], "OVM_GasPriceOracle": [ 17036 ], "Ownable": [ 415 ], "Ownable2Step": [ 45709 ], "Payable": [ 45766 ], "Proxiable": [ 45810 ], "ReentrancyGuard": [ 592 ], "Secp256k1": [ 32535 ], "Upgradeable": [ 45930 ], "WitOracle": [ 678 ], "WitOracleBasePushOnly": [ 9455 ], "WitOracleBaseQueriable": [ 11059 ], "WitOracleBaseQueriableTrustable": [ 12527 ], "WitOracleDataLib": [ 20110 ], "WitOraclePushOnly": [ 701 ], "WitOracleRadonRegistry": [ 726 ], "WitOracleResultStatusLib": [ 37119 ], "WitOracleTrustableOvm2": [ 17387 ], "Witnet": [ 40741 ], "WitnetBuffer": [ 42631 ], "WitnetCBOR": [ 44174 ], "WitnetProxy": [ 8994 ], "WitnetUpgradableBase": [ 9373 ] }, "id": 17388, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 17027, "literals": [ "solidity", ">=", "0.8", ".0", "<", "0.9", ".0" ], "nodeType": "PragmaDirective", "src": "35:31:44" }, { "absolutePath": "project:/contracts/core/base/WitOracleBaseQueriableTrustable.sol", "file": "../base/WitOracleBaseQueriableTrustable.sol", "id": 17028, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 17388, "sourceUnit": 12528, "src": "70:53:44", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [], "canonicalName": "OVM_GasPriceOracle", "contractDependencies": [], "contractKind": "interface", "fullyImplemented": false, "id": 17036, "linearizedBaseContracts": [ 17036 ], "name": "OVM_GasPriceOracle", "nameLocation": "167:18:44", "nodeType": "ContractDefinition", "nodes": [ { "functionSelector": "49948e0e", "id": 17035, "implemented": false, "kind": "function", "modifiers": [], "name": "getL1Fee", "nameLocation": "202:8:44", "nodeType": "FunctionDefinition", "parameters": { "id": 17031, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 17030, "mutability": "mutable", "name": "_data", "nameLocation": "226:5:44", "nodeType": "VariableDeclaration", "scope": 17035, "src": "211:20:44", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 17029, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "211:5:44", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "210:22:44" }, "returnParameters": { "id": 17034, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 17033, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 17035, "src": "256:7:44", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 17032, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "256:7:44", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "255:9:44" }, "scope": 17036, "src": "193:72:44", "stateMutability": "view", "virtual": false, "visibility": "external" } ], "scope": 17388, "src": "157:111:44", "usedErrors": [], "usedEvents": [] }, { "abstract": false, "baseContracts": [ { "baseName": { "id": 17038, "name": "WitOracleBaseQueriableTrustable", "nameLocations": [ "443:31:44" ], "nodeType": "IdentifierPath", "referencedDeclaration": 12527, "src": "443:31:44" }, "id": 17039, "nodeType": "InheritanceSpecifier", "src": "443:31:44" } ], "canonicalName": "WitOracleTrustableOvm2", "contractDependencies": [], "contractKind": "contract", "documentation": { "id": 17037, "nodeType": "StructuredDocumentation", "src": "272:121:44", "text": "@title Queriable WitOracle \"trustable\" implementation contract for OVM2 chains. \n @author The Witnet Foundation" }, "fullyImplemented": true, "id": 17387, "linearizedBaseContracts": [ 17387, 12527, 27056, 28786, 27628, 11059, 678, 26892, 26795, 26581, 26514, 45766, 9373, 592, 45930, 45810, 267, 45709, 415, 523 ], "name": "WitOracleTrustableOvm2", "nameLocation": "402:22:44", "nodeType": "ContractDefinition", "nodes": [ { "baseFunctions": [ 26472 ], "body": { "id": 17050, "nodeType": "Block", "src": "553:59:44", "statements": [ { "expression": { "expression": { "arguments": [ { "id": 17046, "name": "WitOracleTrustableOvm2", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 17387, "src": "576:22:44", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_WitOracleTrustableOvm2_$17387_$", "typeString": "type(contract WitOracleTrustableOvm2)" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_type$_t_contract$_WitOracleTrustableOvm2_$17387_$", "typeString": "type(contract WitOracleTrustableOvm2)" } ], "id": 17045, "name": "type", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967269, "src": "571:4:44", "typeDescriptions": { "typeIdentifier": "t_function_metatype_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 17047, "isConstant": false, "isLValue": false, "isPure": true, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "571:28:44", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_magic_meta_type_t_contract$_WitOracleTrustableOvm2_$17387", "typeString": "type(contract WitOracleTrustableOvm2)" } }, "id": 17048, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberLocation": "600:4:44", "memberName": "name", "nodeType": "MemberAccess", "src": "571:33:44", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 17044, "id": 17049, "nodeType": "Return", "src": "564:40:44" } ] }, "functionSelector": "bff852fa", "id": 17051, "implemented": true, "kind": "function", "modifiers": [], "name": "class", "nameLocation": "492:5:44", "nodeType": "FunctionDefinition", "overrides": { "id": 17041, "nodeType": "OverrideSpecifier", "overrides": [], "src": "508:8:44" }, "parameters": { "id": 17040, "nodeType": "ParameterList", "parameters": [], "src": "497:2:44" }, "returnParameters": { "id": 17044, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 17043, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 17051, "src": "538:13:44", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 17042, "name": "string", "nodeType": 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