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@gnosis.pm/pm-contracts

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Collection of smart contracts for the Gnosis prediction market platform

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{ "contractName": "StandardMarketWithPriceLoggerData", "abi": [ { "constant": true, "inputs": [], "name": "startDate", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "LONG", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "lastTradeDate", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "priceIntegral", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "endDate", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "lastTradePrice", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "metadata": 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"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", "sourceMap": "65:339:11:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;65:339:11;;;;;;;", "deployedSourceMap": "65:339:11:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;65:339:11;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;261:21;;;:::i;:::-;;;;;;;;;;;;;;;;;;;193:30;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;313:25;;;:::i;:::-;;;;;;;;;;;;;;;;;;;376;;;:::i;:::-;;;;;;;;;;;;;;;;;;;288:19;;;:::i;:::-;;;;;;;;;;;;;;;;;;;344:26;;;:::i;:::-;;;;;;;;;;;;;;;;;;;261:21;;;;:::o;193:30::-;222:1;193:30;:::o;313:25::-;;;;:::o;376:::-;;;;:::o;288:19::-;;;;:::o;344:26::-;;;;:::o", "source": "pragma solidity ^0.5.0;\nimport \"../Markets/StandardMarket.sol\";\n\ncontract StandardMarketWithPriceLoggerData {\n\n /*\n * Constants\n */\n uint constant ONE = 0x10000000000000000;\n uint8 public constant LONG = 1;\n\n /*\n * Storage\n */\n uint public startDate;\n uint public endDate;\n uint public lastTradeDate;\n uint public lastTradePrice;\n uint public priceIntegral;\n}\n\ncontract StandardMarketWithPriceLoggerProxy is StandardMarketProxy, StandardMarketWithPriceLoggerData {\n\n /// @dev Constructor validates and sets market properties\n /// @param _creator Market creator\n /// @param _eventContract Event contract\n /// @param _marketMaker Market maker contract\n /// @param _fee Market fee\n /// @param _startDate Start date for price logging\n constructor(address proxied, address _creator, Event _eventContract, MarketMaker _marketMaker, uint24 _fee, uint _startDate)\n public\n StandardMarketProxy(proxied, _creator, _eventContract, _marketMaker, _fee)\n {\n require(eventContract.getOutcomeCount() == 2);\n\n if (_startDate == 0)\n startDate = now;\n else {\n // The earliest start date is the market creation date\n require(_startDate >= now);\n startDate = _startDate;\n }\n\n lastTradeDate = startDate;\n // initialize lastTradePrice to assuming uniform probabilities of outcomes\n lastTradePrice = ONE / 2;\n }\n}\n\ncontract StandardMarketWithPriceLogger is StandardMarket, StandardMarketWithPriceLoggerData {\n /*\n * Public functions\n */\n /// @dev Allows to buy outcome tokens from market maker\n /// @param outcomeTokenIndex Index of the outcome token to buy\n /// @param outcomeTokenCount Amount of outcome tokens to buy\n /// @param maxCost The maximum cost in collateral tokens to pay for outcome tokens\n /// @return Cost in collateral tokens\n function buy(uint8 outcomeTokenIndex, uint outcomeTokenCount, uint maxCost)\n public\n returns (uint cost)\n {\n logPriceBefore();\n cost = super.buy(outcomeTokenIndex, outcomeTokenCount, maxCost);\n logPriceAfter();\n }\n\n /// @dev Allows to sell outcome tokens to market maker\n /// @param outcomeTokenIndex Index of the outcome token to sell\n /// @param outcomeTokenCount Amount of outcome tokens to sell\n /// @param minProfit The minimum profit in collateral tokens to earn for outcome tokens\n /// @return Profit in collateral tokens\n function sell(uint8 outcomeTokenIndex, uint outcomeTokenCount, uint minProfit)\n public\n returns (uint profit)\n {\n logPriceBefore();\n profit = super.sell(outcomeTokenIndex, outcomeTokenCount, minProfit);\n logPriceAfter();\n }\n\n /// @dev Buys all outcomes, then sells all shares of selected outcome which were bought, keeping\n /// shares of all other outcome tokens.\n /// @param outcomeTokenIndex Index of the outcome token to short sell\n /// @param outcomeTokenCount Amount of outcome tokens to short sell\n /// @param minProfit The minimum profit in collateral tokens to earn for short sold outcome tokens\n /// @return Cost to short sell outcome in collateral tokens\n function shortSell(uint8 outcomeTokenIndex, uint outcomeTokenCount, uint minProfit)\n public\n returns (uint cost)\n {\n logPriceBefore();\n cost = super.shortSell(outcomeTokenIndex, outcomeTokenCount, minProfit);\n logPriceAfter();\n }\n\n /// @dev Allows to trade outcome tokens with market maker\n /// @param outcomeTokenAmounts Amounts of outcome tokens to trade\n /// @param collateralLimit The maximum cost or minimum profit in collateral tokens\n /// @return Cost/profit in collateral tokens\n function trade(int[] memory outcomeTokenAmounts, int collateralLimit)\n public\n returns (int netCost)\n {\n logPriceBefore();\n netCost = super.trade(outcomeTokenAmounts, collateralLimit);\n logPriceAfter();\n }\n\n\n /// @dev Allows market creator to close the markets by transferring all remaining outcome tokens to the creator\n function close()\n public\n {\n endDate = now;\n super.close();\n }\n\n /// @dev Calculates average price for long tokens based on price integral\n /// @return Average price for long tokens over time\n function getAvgPrice()\n public\n view\n returns (uint)\n {\n if(endDate > 0)\n return (priceIntegral + lastTradePrice * (endDate - lastTradeDate)) / (endDate - startDate);\n return (priceIntegral + lastTradePrice * (now - lastTradeDate)) / (now - startDate);\n }\n\n /*\n * Private functions\n */\n /// @dev Adds price integral since the last trade to the total price integral\n function logPriceBefore()\n private\n {\n if (now >= startDate) {\n // Accumulate price integral only if logging 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"subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "1452:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1435:24:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3348, "nodeType": "ExpressionStatement", "src": "1435:24:11" } ] }, "documentation": "@dev Constructor validates and sets market properties\n @param _creator Market creator\n @param _eventContract Event contract\n @param _marketMaker Market maker contract\n @param _fee Market fee\n @param _startDate Start date for price logging", "id": 3350, "implemented": true, "kind": "constructor", "modifiers": [ { "arguments": [ { "argumentTypes": null, "id": 3305, "name": "proxied", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3292, "src": "965:7:11", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": 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"typeIdentifier": "t_uint24", "typeString": "uint24" } } ], "id": 3310, "modifierName": { "argumentTypes": null, "id": 3304, "name": "StandardMarketProxy", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2389, "src": "945:19:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_StandardMarketProxy_$2389_$", "typeString": "type(contract StandardMarketProxy)" } }, "nodeType": "ModifierInvocation", "src": "945:74:11" } ], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 3303, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3292, "name": "proxi