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George - \ncontract DifficultyOracle is Oracle {\n\n /*\n * Events\n */\n event OutcomeAssignment(uint difficulty);\n\n /*\n * Storage\n */\n uint public blockNumber;\n uint public difficulty;\n\n /*\n * Public functions\n */\n /// @dev Contract constructor validates and sets target block number\n /// @param _blockNumber Target block number\n constructor(uint _blockNumber)\n public\n {\n // Block has to be in the future\n require(_blockNumber > block.number);\n blockNumber = _blockNumber;\n }\n\n /// @dev Sets difficulty as winning outcome for specified block\n function setOutcome()\n public\n {\n // Block number was reached and outcome was not set yet\n require(block.number >= blockNumber && difficulty == 0);\n difficulty = block.difficulty;\n emit OutcomeAssignment(difficulty);\n }\n\n /// @dev Returns if difficulty is set\n /// @return Is outcome set?\n function isOutcomeSet()\n public\n view\n returns (bool)\n {\n // Difficulty is always bigger than 0\n return difficulty > 0;\n }\n\n /// @dev Returns difficulty\n /// @return Outcome\n function getOutcome()\n public\n view\n returns (int)\n {\n return int(difficulty);\n }\n}\n", "sourcePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/DifficultyOracle.sol", "ast": { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/DifficultyOracle.sol", "exportedSymbols": { "DifficultyOracle": [ 3945 ] }, "id": 3946, "nodeType": "SourceUnit", "nodes": [ { "id": 3872, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:16" }, { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/Oracle.sol", "file": "../Oracles/Oracle.sol", "id": 3873, "nodeType": "ImportDirective", "scope": 3946, "sourceUnit": 4842, "src": "24:31:16", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 3874, "name": "Oracle", "nodeType": "UserDefinedTypeName", 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