@gnosis.pm/pm-contracts

{ "contractName": "StandardMarketWithPriceLoggerProxy", "abi": [ { "constant": true, "inputs": [], "name": "creator", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "startDate", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "marketMaker", "outputs": [ { "name": "", "type": "address" } ], "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": "createdAtBlock", "outputs": [ { "name": "", "type": "uint256" } ], "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": "", "type": "uint256" } ], "name": "netOutcomeTokensSold", "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": "stage", "outputs": [ { "name": "", "type": "uint8" } ], "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": "funding", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "fee", "outputs": [ { "name": "", "type": "uint24" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "lastTradePrice", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "eventContract", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "FEE_RANGE", "outputs": [ { "name": "", "type": "uint24" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "inputs": [ { "name": "proxied", "type": "address" }, { "name": "_creator", "type": "address" }, { "name": "_eventContract", "type": "address" }, { "name": "_marketMaker", "type": "address" }, { "name": "_fee", "type": "uint24" }, { "name": "_startDate", "type": "uint256" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "payable": true, "stateMutability": "payable", "type": "fallback" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "funding", "type": "uint256" } ], "name": "MarketFunding", "type": "event" }, { "anonymous": false, "inputs": [], "name": "MarketClosing", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "fees", "type": "uint256" } ], "name": "FeeWithdrawal", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "buyer", "type": "address" }, { "indexed": false, "name": "outcomeTokenIndex", "type": "uint8" }, { "indexed": false, "name": "outcomeTokenCount", "type": "uint256" }, { "indexed": false, "name": "outcomeTokenCost", "type": "uint256" }, { "indexed": false, "name": "marketFees", "type": "uint256" } ], "name": "OutcomeTokenPurchase", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "seller", "type": "address" }, { "indexed": false, "name": "outcomeTokenIndex", "type": "uint8" }, { "indexed": false, "name": "outcomeTokenCount", "type": "uint256" }, { "indexed": false, "name": "outcomeTokenProfit", "type": "uint256" }, { "indexed": false, "name": "marketFees", "type": "uint256" } ], "name": "OutcomeTokenSale", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "buyer", "type": "address" }, { "indexed": false, "name": "outcomeTokenIndex", "type": "uint8" }, { "indexed": false, "name": "outcomeTokenCount", "type": "uint256" }, { "indexed": false, "name": "cost", "type": "uint256" } ], "name": "OutcomeTokenShortSale", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "transactor", "type": "address" }, { "indexed": false, "name": "outcomeTokenAmounts", "type": "int256[]" }, { "indexed": false, "name": "outcomeTokenNetCost", "type": "int256" }, { "indexed": false, "name": "marketFees", "type": "uint256" } ], "name": "OutcomeTokenTrade", "type": "event" } ], "metadata": 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validates and sets market properties\",\"params\":{\"_creator\":\"Market creator\",\"_eventContract\":\"Event contract\",\"_fee\":\"Market fee\",\"_marketMaker\":\"Market maker contract\",\"_startDate\":\"Start date for price 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"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 has begun\n priceIntegral += lastTradePrice * (now - lastTradeDate);\n }\n }\n\n /// @dev Updates last trade timestamp and price\n function logPriceAfter()\n private\n {\n // Refresh lastTradePrice after every transactions as we don't know if\n // this will be the last transaction before logging period starts\n lastTradePrice = marketMaker.calcMarginalPrice(this, LONG);\n lastTradeDate = now;\n }\n}\n", "sourcePath": 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