{ "contractName": "PaidOracle", "abi": [ { "constant": true, "inputs": [], "name": "dataSource", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "reward", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "bytes32" } ], "name": "isResultSet", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_result", "type": "bytes" } ], "name": "setResult", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "name": "id", "type": "bytes32" } ], "name": "resultFor", "outputs": [ { "name": "", "type": "bytes" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "_result", "type": "bytes" }, { "indexed": false, "name": "_sender", "type": "address" } ], "name": "ResultSet", "type": "event" }, { "constant": false, "inputs": [ { "name": "_dataSource", "type": "address" } ], "name": "initialize", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_dataSource", "type": "address" }, { "name": "_reward", "type": "uint256" } ], "name": "initialize", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "constant": true, "inputs": [], "name": "getReward", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "bytecode": 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"source": "pragma solidity ^0.4.24;\n\nimport \"./BasicOracle.sol\";\nimport \"openzeppelin-eth/contracts/math/Math.sol\";\nimport \"openzeppelin-eth/contracts/math/SafeMath.sol\";\n\n/**\n * @title PaidOracle\n * @dev BasicOracle with reward set in constructor. The reward is transfered to \n * dataSource when the result is successfully set.\n */\n\ncontract PaidOracle is BasicOracle {\n\n uint256 public reward;\n\n /**\n * @dev PaidOracle constructor\n * @param _dataSource The address that is able to set the result\n * @param _reward The reward for dataSource setting the result\n */\n function initialize(\n address _dataSource,\n uint256 _reward\n )\n public \n payable\n initializer\n {\n require(_dataSource != address(0), \"Require a non-null dataSource\");\n BasicOracle.initialize(_dataSource);\n reward = _reward;\n }\n\n /**\n * @dev Returns the oracle reward or the contract's balance if it's less than the reward\n */\n function getReward() \n public \n view\n returns \n (uint256)\n {\n return Math.min(reward, address(this).balance);\n }\n\n /*\n * Internal functions\n */\n function _resultWasSet(bytes /*_result*/)\n internal\n {\n require(resultIsSet, \"Result hasn't been set yet.\");\n require(dataSource != address(0));\n dataSource.transfer(getReward());\n }\n}\n", "sourcePath": "/Users/mfcalvanese/dev/eth/tidbit-eth/contracts/Oracles/PaidOracle.sol", "ast": { "absolutePath": "/Users/mfcalvanese/dev/eth/tidbit-eth/contracts/Oracles/PaidOracle.sol", "exportedSymbols": { "PaidOracle": [ 896 ] }, "id": 897, "nodeType": "SourceUnit", "nodes": [ { "id": 818, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:17" }, { "absolutePath": "/Users/mfcalvanese/dev/eth/tidbit-eth/contracts/Oracles/BasicOracle.sol", "file": "./BasicOracle.sol", "id": 819, "nodeType": "ImportDirective", "scope": 897, "sourceUnit": 257, "src": "26:27:17", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "openzeppelin-eth/contracts/math/Math.sol", "file": "openzeppelin-eth/contracts/math/Math.sol", "id": 820, "nodeType": "ImportDirective", "scope": 897, "sourceUnit": 2945, "src": "54:50:17", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "openzeppelin-eth/contracts/math/SafeMath.sol", "file": "openzeppelin-eth/contracts/math/SafeMath.sol", "id": 821, "nodeType": "ImportDirective", "scope": 897, "sourceUnit": 3073, "src": "105:54:17", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 822, "name": "BasicOracle", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 256, "src": "346:11:17", "typeDescriptions": { "typeIdentifier": "t_contract$_BasicOracle_$256", "typeString": "contract BasicOracle" } }, "id": 823, "nodeType": "InheritanceSpecifier", "src": "346:11:17" } ], "contractDependencies": [ 256, 273, 734, 3241 ], "contractKind": "contract", "documentation": "@title PaidOracle\n@dev BasicOracle with reward set in constructor. The reward is transfered to \ndataSource when the result is successfully set.", "fullyImplemented": true, "id": 896, "linearizedBaseContracts": [ 896, 256, 734, 273, 3241 ], "name": "PaidOracle", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 825, "name": "reward", "nodeType": "VariableDeclaration", "scope": 896, "src": "363:21:17", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 824, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "363:7:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "public" }, { "body": { "id": 853, "nodeType": "Block", "src": "678:141:17", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 839, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 835, "name": "_dataSource", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 827, "src": "692:11:17", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 837, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "715:1:17", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 836, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "707:7:17", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 838, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "707:10:17", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "692:25:17", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "526571756972652061206e6f6e2d6e756c6c2064617461536f75726365", "id": 840, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "719:31:17", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_2ca8759c2f094a78ecefd324a7cd9a91d7d1ed81aac5582ab7d6fcb7e4e3e953", "typeString": "literal_string \"Require a non-null dataSource\"" }, "value": "Require a non-null dataSource" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_2ca8759c2f094a78ecefd324a7cd9a91d7d1ed81aac5582ab7d6fcb7e4e3e953", "typeString": "literal_string \"Require a non-null dataSource\"" } ], "id": 834, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 3259, 3260 ], "referencedDeclaration": 3260, "src": "684:7:17", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 841, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "684:67:17", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 842, "nodeType": "ExpressionStatement", "src": "684:67:17" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 846, "name": "_dataSource", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 827, "src": "780:11:17", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "id": 843, "name": "BasicOracle", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 256, "src": "757:11:17", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_BasicOracle_$256_$", "typeString": "type(contract BasicOracle)" } }, "id": 845, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "initialize", "nodeType": "MemberAccess", "referencedDeclaration": 237, "src": "757:22:17", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 847, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "757:35:17", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 848, "nodeType": "ExpressionStatement", "src": "757:35:17" }, { "expression": { "argumentTypes": null, "id": 851, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 849, "name": "reward", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 825, "src": "798:6:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 850, "name": "_reward", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 829, "src": "807:7:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "798:16:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 852, "nodeType": "ExpressionStatement", "src": "798:16:17" } ] }, "documentation": "@dev PaidOracle constructor\n@param _dataSource The address that is able to set the result\n@param _reward The reward for dataSource setting the result", "id": 854, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [ { "arguments": null, "id": 832, "modifierName": { "argumentTypes": null, "id": 831, "name": "initializer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3222, "src": "664:11:17", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "664:11:17" } ], "name": "initialize", "nodeType": "FunctionDefinition", "parameters": { "id": 830, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 827, "name": "_dataSource", "nodeType": "VariableDeclaration", "scope": 854, "src": "591:19:17", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 826, "name": "address", "nodeType": "ElementaryTypeName", "src": "591:7:17", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 829, "name": "_reward", "nodeType": "VariableDeclaration", "scope": 854, "src": "616:15:17", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 828, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "616:7:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "585:50:17" }, "payable": true, "returnParameters": { "id": 833, "nodeType": "ParameterList", "parameters": [], "src": "678:0:17" }, "scope": 896, "src": "566:253:17", "stateMutability": "payable", "superFunction": null, "visibility": "public" }, { "body": { "id": 868, "nodeType": "Block", "src": "998:57:17", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 861, "name": "reward", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 825, "src": "1020:6:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 863, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3309, "src": "1036:4:17", "typeDescriptions": { "typeIdentifier": "t_contract$_PaidOracle_$896", "typeString": "contract PaidOracle" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_PaidOracle_$896", "typeString": "contract PaidOracle" } ], "id": 862, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1028:7:17", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 864, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1028:13:17", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 865, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "balance", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1028:21:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 859, "name": "Math", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2944, "src": "1011:4:17", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Math_$2944_$", "typeString": "type(library Math)" } }, "id": 860, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "min", "nodeType": "MemberAccess", "referencedDeclaration": 2911, "src": "1011:8:17", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 866, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1011:39:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 858, "id": 867, "nodeType": "Return", "src": "1004:46:17" } ] }, "documentation": "@dev Returns the oracle reward or the contract's balance if it's less than the reward", "id": 869, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "getReward", "nodeType": "FunctionDefinition", "parameters": { "id": 855, "nodeType": "ParameterList", "parameters": [], "src": "944:2:17" }, "payable": false, "returnParameters": { "id": 858, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 857, "name": "", "nodeType": "VariableDeclaration", "scope": 869, "src": "987:7:17", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 856, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "987:7:17", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "986:9:17" }, "scope": 896, "src": "926:129:17", "stateMutability": "view", "superFunction": null, "visibility": "public" }, { "body": { "id": 894, "nodeType": "Block", "src": "1152:139:17", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 875, "name": "resultIsSet", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 655, "src": "1166:11:17", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "526573756c74206861736e2774206265656e20736574207965742e", "id": 876, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1179:29:17", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_203297f9b4ae0e67928e9b81457b688b55499f61cd14517483332bf3d48c7481", "typeString": "literal_string \"Result hasn't been set yet.\"" }, "value": "Result hasn't been set yet." } ], "expression": { 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