{ "contractName": "FutarchyOracle", "abi": [ { "constant": true, "inputs": [], "name": "LONG", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "winningMarketIndex", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "masterCopy", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "uint256" } ], "name": "markets", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "categoricalEvent", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "isSet", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "tradingPeriod", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "funding", "type": "uint256" } ], "name": "FutarchyFunding", "type": "event" }, { "anonymous": false, "inputs": [], "name": "FutarchyClosing", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "winningMarketIndex", "type": "uint256" } ], "name": "OutcomeAssignment", "type": "event" }, { "constant": false, "inputs": [ { "name": "funding", "type": "uint256" } ], "name": "fund", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "close", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "setOutcome", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "isOutcomeSet", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getOutcome", "outputs": [ { "name": "", "type": "int256" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.6+commit.b259423e\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":false,\"inputs\":[],\"name\":\"setOutcome\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"close\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"LONG\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"winningMarketIndex\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getOutcome\",\"outputs\":[{\"name\":\"\",\"type\":\"int256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"masterCopy\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"markets\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"categoricalEvent\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"isSet\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"funding\",\"type\":\"uint256\"}],\"name\":\"fund\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"isOutcomeSet\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"tradingPeriod\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"name\":\"funding\",\"type\":\"uint256\"}],\"name\":\"FutarchyFunding\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[],\"name\":\"FutarchyClosing\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"name\":\"winningMarketIndex\",\"type\":\"uint256\"}],\"name\":\"OutcomeAssignment\",\"type\":\"event\"}],\"devdoc\":{\"author\":\"Stefan George - \",\"methods\":{\"close()\":{\"details\":\"Closes market for winning outcome and redeems winnings and sends all collateral tokens to creator\"},\"fund(uint256)\":{\"details\":\"Funds all markets with equal amount of funding\",\"params\":{\"funding\":\"Amount of funding\"}},\"getOutcome()\":{\"details\":\"Returns winning outcome\",\"return\":\"Outcome\"},\"isOutcomeSet()\":{\"details\":\"Returns if winning outcome is set\",\"return\":\"Is outcome set?\"},\"setOutcome()\":{\"details\":\"Allows to set the oracle outcome based on the market with largest long position\"}},\"title\":\"Futarchy oracle contract - Allows to create an oracle based on market 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"source": "pragma solidity ^0.5.0;\nimport \"../Oracles/Oracle.sol\";\nimport \"../Events/EventFactory.sol\";\nimport \"../Markets/StandardMarketWithPriceLoggerFactory.sol\";\nimport \"@gnosis.pm/util-contracts/contracts/Proxy.sol\";\n\n\ncontract FutarchyOracleData {\n\n /*\n * Events\n */\n event FutarchyFunding(uint funding);\n event FutarchyClosing();\n event OutcomeAssignment(uint winningMarketIndex);\n\n /*\n * Constants\n */\n uint8 public constant LONG = 1;\n\n /*\n * Storage\n */\n address creator;\n StandardMarketWithPriceLogger[] public markets;\n CategoricalEvent public categoricalEvent;\n uint public tradingPeriod;\n uint public winningMarketIndex;\n bool public isSet;\n\n /*\n * Modifiers\n */\n modifier isCreator() {\n // Only creator is allowed to proceed\n require(msg.sender == creator);\n _;\n }\n}\n\ncontract FutarchyOracleProxy is Proxy, FutarchyOracleData {\n\n /// @dev Constructor creates events and markets for futarchy oracle\n /// @param _creator Oracle creator\n /// @param eventFactory Event factory contract\n /// @param collateralToken Tokens used as collateral in exchange for outcome tokens\n /// @param oracle Oracle contract used to resolve the event\n /// @param outcomeCount Number of event outcomes\n /// @param lowerBound Lower bound for event outcome\n /// @param upperBound Lower bound for event outcome\n /// @param marketFactory Market factory contract\n /// @param marketMaker Market maker contract\n /// @param fee Market fee\n /// @param _tradingPeriod Trading period before decision can be determined\n /// @param startDate Start date for price logging\n constructor(\n address proxied,\n address _creator,\n EventFactory eventFactory,\n ERC20 collateralToken,\n Oracle oracle,\n uint8 outcomeCount,\n int lowerBound,\n int upperBound,\n StandardMarketWithPriceLoggerFactory marketFactory,\n MarketMaker marketMaker,\n uint24 fee,\n uint _tradingPeriod,\n uint startDate\n )\n Proxy(proxied)\n public\n {\n // trading period is at least a second\n require(_tradingPeriod > 0);\n // Create decision event\n categoricalEvent = eventFactory.createCategoricalEvent(collateralToken, Oracle(address(this)), outcomeCount);\n // Create outcome events\n for (uint8 i = 0; i < categoricalEvent.getOutcomeCount(); i++) {\n ScalarEvent scalarEvent = eventFactory.createScalarEvent(\n categoricalEvent.outcomeTokens(i),\n oracle,\n lowerBound,\n upperBound\n );\n markets.push(marketFactory.createMarket(scalarEvent, marketMaker, fee, startDate));\n }\n creator = _creator;\n tradingPeriod = _tradingPeriod;\n }\n}\n\n/// @title Futarchy oracle contract - Allows to create an oracle based on market behaviour\n/// @author Stefan George - \ncontract FutarchyOracle is Proxied, Oracle, FutarchyOracleData {\n using SafeMath for *;\n\n /*\n * Public functions\n */\n /// @dev Funds all markets with equal amount of funding\n /// @param funding Amount of funding\n function fund(uint funding)\n public\n isCreator\n {\n // Buy all outcomes\n require( categoricalEvent.collateralToken().transferFrom(creator, address(this), funding)\n && categoricalEvent.collateralToken().approve(address(categoricalEvent), funding));\n categoricalEvent.buyAllOutcomes(funding);\n // Fund each market with outcome tokens from categorical event\n for (uint8 i = 0; i < markets.length; i++) {\n Market market = markets[i];\n // Approve funding for market\n require(market.eventContract().collateralToken().approve(address(market), funding));\n market.fund(funding);\n }\n emit FutarchyFunding(funding);\n }\n\n /// @dev Closes market for winning outcome and redeems winnings and sends all collateral tokens to creator\n function close()\n public\n isCreator\n {\n // Winning outcome has to be set\n Market market = markets[uint(getOutcome())];\n require(categoricalEvent.isOutcomeSet() && market.eventContract().isOutcomeSet());\n // Close market and transfer all outcome tokens from winning outcome to this contract\n market.close();\n market.eventContract().redeemWinnings();\n market.withdrawFees();\n // Redeem collateral token for winning outcome tokens and transfer collateral tokens to creator\n categoricalEvent.redeemWinnings();\n require(categoricalEvent.collateralToken().transfer(creator, categoricalEvent.collateralToken().balanceOf(address(this))));\n emit FutarchyClosing();\n }\n\n /// @dev Allows to set the oracle outcome based on the market with largest long position\n function setOutcome()\n public\n {\n // Outcome is not set yet and trading period is over\n require(!isSet && markets[0].startDate() + tradingPeriod < now);\n // Find market with highest marginal price for long outcome tokens\n uint highestAvgPrice = markets[0].getAvgPrice();\n uint highestIndex = 0;\n for (uint8 i = 1; i < markets.length; i++) {\n uint avgPrice = markets[i].getAvgPrice();\n if (avgPrice > highestAvgPrice) {\n highestAvgPrice = avgPrice;\n highestIndex = i;\n }\n }\n winningMarketIndex = highestIndex;\n isSet = true;\n emit OutcomeAssignment(winningMarketIndex);\n }\n\n /// @dev Returns if winning outcome is set\n /// @return Is outcome set?\n function isOutcomeSet()\n public\n view\n returns (bool)\n {\n return isSet;\n }\n\n /// @dev Returns winning outcome\n /// @return Outcome\n function getOutcome()\n public\n view\n returns (int)\n {\n return int(winningMarketIndex);\n }\n}\n", "sourcePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/FutarchyOracle.sol", "ast": { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/FutarchyOracle.sol", "exportedSymbols": { "FutarchyOracle": [ 4380 ], "FutarchyOracleData": [ 4023 ], "FutarchyOracleProxy": [ 4127 ] }, "id": 4381, "nodeType": "SourceUnit", "nodes": [ { "id": 3981, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:18" }, { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/Oracle.sol", "file": "../Oracles/Oracle.sol", "id": 3982, "nodeType": "ImportDirective", "scope": 4381, "sourceUnit": 4842, "src": "24:31:18", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Events/EventFactory.sol", "file": "../Events/EventFactory.sol", "id": 3983, "nodeType": "ImportDirective", "scope": 4381, "sourceUnit": 603, "src": "56:36:18", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Markets/StandardMarketWithPriceLoggerFactory.sol", "file": "../Markets/StandardMarketWithPriceLoggerFactory.sol", "id": 3984, "nodeType": "ImportDirective", "scope": 4381, "sourceUnit": 3623, "src": "93:61:18", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@gnosis.pm/util-contracts/contracts/Proxy.sol", "file": "@gnosis.pm/util-contracts/contracts/Proxy.sol", "id": 3985, "nodeType": "ImportDirective", "scope": 4381, "sourceUnit": 6829, "src": "155:55:18", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": null, "fullyImplemented": true, "id": 4023, "linearizedBaseContracts": [ 4023 ], "name": "FutarchyOracleData", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": null, "id": 3989, "name": "FutarchyFunding", "nodeType": "EventDefinition", "parameters": { "id": 3988, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3987, "indexed": false, "name": "funding", "nodeType": "VariableDeclaration", "scope": 3989, "src": "300:12:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3986, "name": "uint", "nodeType": "ElementaryTypeName", "src": "300:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "299:14:18" }, "src": "278:36:18" }, { "anonymous": false, "documentation": null, "id": 3991, "name": "FutarchyClosing", "nodeType": "EventDefinition", "parameters": { "id": 3990, "nodeType": "ParameterList", "parameters": [], "src": "340:2:18" }, "src": "319:24:18" }, { "anonymous": false, "documentation": null, "id": 3995, "name": "OutcomeAssignment", "nodeType": "EventDefinition", "parameters": { "id": 3994, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3993, "indexed": false, "name": "winningMarketIndex", "nodeType": "VariableDeclaration", "scope": 3995, "src": "372:23:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3992, "name": "uint", "nodeType": "ElementaryTypeName", "src": "372:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "371:25:18" }, "src": "348:49:18" }, { "constant": true, "id": 3998, "name": "LONG", "nodeType": "VariableDeclaration", "scope": 4023, "src": "436:30:18", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 3996, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "436:5:18", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "argumentTypes": null, "hexValue": "31", "id": 3997, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "465:1:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "visibility": "public" }, { "constant": false, "id": 4000, "name": "creator", "nodeType": "VariableDeclaration", "scope": 4023, "src": "504:15:18", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, 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false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 4121, "name": "tradingPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4007, "src": "2827:13:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 4122, "name": "_tradingPeriod", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4051, "src": "2843:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "2827:30:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 4124, "nodeType": "ExpressionStatement", "src": "2827:30:18" } ] }, "documentation": "@dev Constructor creates events and markets for futarchy oracle\n @param _creator Oracle creator\n @param eventFactory Event factory contract\n @param collateralToken Tokens used as collateral in exchange for outcome tokens\n @param oracle Oracle contract used to resolve the event\n @param outcomeCount Number of event outcomes\n @param lowerBound Lower bound for event outcome\n @param upperBound Lower bound for event outcome\n @param marketFactory Market factory contract\n @param marketMaker Market maker contract\n @param fee Market fee\n @param _tradingPeriod Trading period before decision can be determined\n @param startDate Start date for price logging", "id": 4126, "implemented": true, "kind": "constructor", "modifiers": [ { "arguments": [ { "argumentTypes": null, "id": 4056, "name": "proxied", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4029, "src": "2099:7:18", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "id": 4057, "modifierName": { "argumentTypes": null, "id": 4055, "name": "Proxy", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6828, "src": "2093:5:18", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Proxy_$6828_$", "typeString": "type(contract Proxy)" } }, "nodeType": "ModifierInvocation", "src": "2093:14:18" } ], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 4054, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4029, "name": "proxied", "nodeType": "VariableDeclaration", "scope": 4126, "src": "1706:15:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4028, "name": "address", "nodeType": "ElementaryTypeName", "src": "1706:7:18", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4031, "name": "_creator", "nodeType": "VariableDeclaration", "scope": 4126, "src": "1731:16:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4030, "name": "address", "nodeType": "ElementaryTypeName", "src": "1731:7:18", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4033, "name": "eventFactory", "nodeType": "VariableDeclaration", "scope": 4126, "src": "1757:25:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_EventFactory_$602", "typeString": "contract EventFactory" }, "typeName": { "contractScope": null, "id": 4032, "name": "EventFactory", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 602, "src": "1757:12:18", "typeDescriptions": { "typeIdentifier": "t_contract$_EventFactory_$602", "typeString": "contract EventFactory" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4035, 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funding" } }, "getOutcome()": { "details": "Returns winning outcome", "return": "Outcome" }, "isOutcomeSet()": { "details": "Returns if winning outcome is set", "return": "Is outcome set?" }, "setOutcome()": { "details": "Allows to set the oracle outcome based on the market with largest long position" } }, "title": "Futarchy oracle contract - Allows to create an oracle based on market behaviour" }, "userdoc": { "methods": {} } }