@gooddollar/goodcontracts

{ "contractName": "Reputation", "abi": [ { "constant": true, "inputs": [], "name": "decimals", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [], "name": "renounceOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "isOwner", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_to", "type": "address" }, { "indexed": false, "name": "_amount", "type": "uint256" } ], "name": "Mint", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_from", "type": "address" }, { "indexed": false, "name": "_amount", "type": "uint256" } ], "name": "Burn", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "previousOwner", "type": "address" }, { "indexed": true, "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "constant": true, "inputs": [], "name": "totalSupply", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "name": "balance", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" }, { "name": "_blockNumber", "type": "uint256" } ], "name": "balanceOfAt", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_blockNumber", "type": "uint256" } ], "name": "totalSupplyAt", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_user", "type": "address" }, { "name": "_amount", "type": "uint256" } ], "name": "mint", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_user", "type": "address" }, { "name": "_amount", "type": "uint256" } ], "name": "burn", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.4+commit.9549d8ff\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_user\",\"type\":\"address\"},{\"name\":\"_amount\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_owner\",\"type\":\"address\"},{\"name\":\"_blockNumber\",\"type\":\"uint256\"}],\"name\":\"balanceOfAt\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"balance\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"renounceOwnership\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"isOwner\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_blockNumber\",\"type\":\"uint256\"}],\"name\":\"totalSupplyAt\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_user\",\"type\":\"address\"},{\"name\":\"_amount\",\"type\":\"uint256\"}],\"name\":\"burn\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"_to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"_amount\",\"type\":\"uint256\"}],\"name\":\"Mint\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"_from\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"_amount\",\"type\":\"uint256\"}],\"name\":\"Burn\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"previousOwner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnershipTransferred\",\"type\":\"event\"}],\"devdoc\":{\"details\":\"A DAO has Reputation System which allows peers to rate other peers in order to build trust . A reputation is use to assign influence measure to a DAO'S peers. Reputation is similar to regular tokens but with one crucial difference: It is non-transferable. The Reputation contract maintain a map of address to reputation value. It provides an onlyOwner functions to mint and burn reputation _to (or _from) a specific address.\",\"methods\":{\"balanceOf(address)\":{\"details\":\"return the reputation amount of a given owner\",\"params\":{\"_owner\":\"an address of the owner which we want to get his reputation\"}},\"balanceOfAt(address,uint256)\":{\"details\":\"Queries the balance of `_owner` at a specific `_blockNumber`\",\"params\":{\"_blockNumber\":\"The block number when the balance is queried\",\"_owner\":\"The address from which the balance will be retrieved\"},\"return\":\"The balance at `_blockNumber`\"},\"burn(address,uint256)\":{\"params\":{\"_amount\":\"The quantity of reputation to burn\",\"_user\":\"The address that will lose the reputation\"},\"return\":\"True if the reputation are burned correctly\"},\"isOwner()\":{\"return\":\"true if `msg.sender` is the owner of the contract.\"},\"mint(address,uint256)\":{\"params\":{\"_amount\":\"The quantity of reputation generated\",\"_user\":\"The address that will be assigned the new reputation\"},\"return\":\"True if the reputation are generated correctly\"},\"owner()\":{\"return\":\"the address of the owner.\"},\"renounceOwnership()\":{\"details\":\"Allows the current owner to relinquish control of the contract.\"},\"totalSupply()\":{\"details\":\"This function makes it easy to get the total number of reputation\",\"return\":\"The total number of reputation\"},\"totalSupplyAt(uint256)\":{\"params\":{\"_blockNumber\":\"The block number when the totalSupply is queried\"},\"return\":\"The total amount of reputation at `_blockNumber`\"},\"transferOwnership(address)\":{\"details\":\"Allows the current owner to transfer control of the contract to a newOwner.\",\"params\":{\"newOwner\":\"The address to transfer ownership to.\"}}},\"title\":\"Reputation system\"},\"userdoc\":{\"methods\":{\"burn(address,uint256)\":{\"notice\":\"Burns `_amount` reputation from `_owner`\"},\"constructor\":\"Constructor to create a Reputation\",\"mint(address,uint256)\":{\"notice\":\"Generates `_amount` reputation that are assigned to `_owner`\"},\"renounceOwnership()\":{\"notice\":\"Renouncing to ownership will leave the contract without an owner. It will not be possible to call the functions with the `onlyOwner` modifier anymore.\"},\"totalSupplyAt(uint256)\":{\"notice\":\"Total amount of reputation at a specific `_blockNumber`.\"}}}},\"settings\":{\"compilationTarget\":{\"@daostack/infra/contracts/Reputation.sol\":\"Reputation\"},\"evmVersion\":\"byzantium\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@daostack/infra/contracts/Reputation.sol\":{\"keccak256\":\"0x3d226dac0fe7d758f0287fb28bc25fcec1f69d19888ae3a550fa49856d61c482\",\"urls\":[\"bzzr://7f219e1874d4f1aea860cc665b75015797f55f149e9bf490abab5d7ad2adfeb9\"]},\"openzeppelin-solidity/contracts/ownership/Ownable.sol\":{\"keccak256\":\"0x980de387a1a020a498f53d00f89fecebb12c949a17e8f160093c0303ede2b786\",\"urls\":[\"bzzr://08894efa2a557982070beda6a81a032407e70532d24bdafe80d39660c74904d9\"]}},\"version\":1}", "bytecode": 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"source": "pragma solidity ^0.5.4;\n\nimport \"openzeppelin-solidity/contracts/ownership/Ownable.sol\";\n\n\n/**\n * @title Reputation system\n * @dev A DAO has Reputation System which allows peers to rate other peers in order to build trust .\n * A reputation is use to assign influence measure to a DAO'S peers.\n * Reputation is similar to regular tokens but with one crucial difference: It is non-transferable.\n * The Reputation contract maintain a map of address to reputation value.\n * It provides an onlyOwner functions to mint and burn reputation _to (or _from) a specific address.\n */\n\ncontract Reputation is Ownable {\n\n uint8 public decimals = 18; //Number of decimals of the smallest unit\n // Event indicating minting of reputation to an address.\n event Mint(address indexed _to, uint256 _amount);\n // Event indicating burning of reputation for an address.\n event Burn(address indexed _from, uint256 _amount);\n\n /// @dev `Checkpoint` is the structure that attaches a block number to a\n /// given value, the block number attached is the one that last changed the\n /// value\n struct Checkpoint {\n\n // `fromBlock` is the block number that the value was generated from\n uint128 fromBlock;\n\n // `value` is the amount of reputation at a specific block number\n uint128 value;\n }\n\n // `balances` is the map that tracks the balance of each address, in this\n // contract when the balance changes the block number that the change\n // occurred is also included in the map\n mapping (address => Checkpoint[]) balances;\n\n // Tracks the history of the `totalSupply` of the reputation\n Checkpoint[] totalSupplyHistory;\n\n /// @notice Constructor to create a Reputation\n constructor(\n ) public\n {\n }\n\n /// @dev This function makes it easy to get the total number of reputation\n /// @return The total number of reputation\n function totalSupply() public view returns (uint256) {\n return totalSupplyAt(block.number);\n }\n\n ////////////////\n // Query balance and totalSupply in History\n ////////////////\n /**\n * @dev return the reputation amount of a given owner\n * @param _owner an address of the owner which we want to get his reputation\n */\n function balanceOf(address _owner) public view returns (uint256 balance) {\n return balanceOfAt(_owner, block.number);\n }\n\n /// @dev Queries the balance of `_owner` at a specific `_blockNumber`\n /// @param _owner The address from which the balance will be retrieved\n /// @param _blockNumber The block number when the balance is queried\n /// @return The balance at `_blockNumber`\n function balanceOfAt(address _owner, uint256 _blockNumber)\n public view returns (uint256)\n {\n if ((balances[_owner].length == 0) || (balances[_owner][0].fromBlock > _blockNumber)) {\n return 0;\n // This will return the expected balance during normal situations\n } else {\n return getValueAt(balances[_owner], _blockNumber);\n }\n }\n\n /// @notice Total amount of reputation at a specific `_blockNumber`.\n /// @param _blockNumber The block number when the totalSupply is queried\n /// @return The total amount of reputation at `_blockNumber`\n function totalSupplyAt(uint256 _blockNumber) public view returns(uint256) {\n if ((totalSupplyHistory.length == 0) || (totalSupplyHistory[0].fromBlock > _blockNumber)) {\n return 0;\n // This will return the expected totalSupply during normal situations\n } else {\n return getValueAt(totalSupplyHistory, _blockNumber);\n }\n }\n\n /// @notice Generates `_amount` reputation that are assigned to `_owner`\n /// @param _user The address that will be assigned the new reputation\n /// @param _amount The quantity of reputation generated\n /// @return True if the reputation are generated correctly\n function mint(address _user, uint256 _amount) public onlyOwner returns (bool) {\n uint256 curTotalSupply = totalSupply();\n require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow\n uint256 previousBalanceTo = balanceOf(_user);\n require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow\n updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);\n updateValueAtNow(balances[_user], previousBalanceTo + _amount);\n emit Mint(_user, _amount);\n return true;\n }\n\n /// @notice Burns `_amount` reputation from `_owner`\n /// @param _user The address that will lose the reputation\n /// @param _amount The quantity of reputation to burn\n /// @return True if the reputation are burned correctly\n function burn(address _user, uint256 _amount) public onlyOwner returns (bool) {\n uint256 curTotalSupply = totalSupply();\n uint256 amountBurned = _amount;\n uint256 previousBalanceFrom = balanceOf(_user);\n if (previousBalanceFrom < amountBurned) {\n amountBurned = previousBalanceFrom;\n }\n updateValueAtNow(totalSupplyHistory, curTotalSupply - amountBurned);\n updateValueAtNow(balances[_user], previousBalanceFrom - amountBurned);\n emit Burn(_user, amountBurned);\n return true;\n }\n\n ////////////////\n // Internal helper functions to query and set a value in a snapshot array\n ////////////////\n\n /// @dev `getValueAt` retrieves the number of reputation at a given block number\n /// @param checkpoints The history of values being queried\n /// @param _block The block number to retrieve the value at\n /// @return The number of reputation being queried\n function getValueAt(Checkpoint[] storage checkpoints, uint256 _block) internal view returns (uint256) {\n if (checkpoints.length == 0) {\n return 0;\n }\n\n // Shortcut for the actual value\n if (_block >= checkpoints[checkpoints.length-1].fromBlock) {\n return checkpoints[checkpoints.length-1].value;\n }\n if (_block < checkpoints[0].fromBlock) {\n return 0;\n }\n\n // Binary search of the value in the array\n uint256 min = 0;\n uint256 max = checkpoints.length-1;\n while (max > min) {\n uint256 mid = (max + min + 1) / 2;\n if (checkpoints[mid].fromBlock<=_block) {\n min = mid;\n } else {\n max = mid-1;\n }\n }\n return checkpoints[min].value;\n }\n\n /// @dev `updateValueAtNow` used to update the `balances` map and the\n /// `totalSupplyHistory`\n /// @param checkpoints The history of data being updated\n /// @param _value The new number of reputation\n function updateValueAtNow(Checkpoint[] storage checkpoints, uint256 _value) internal {\n require(uint128(_value) == _value); //check value is in the 128 bits bounderies\n if ((checkpoints.length == 0) || (checkpoints[checkpoints.length - 1].fromBlock < block.number)) {\n Checkpoint storage newCheckPoint = checkpoints[checkpoints.length++];\n newCheckPoint.fromBlock = uint128(block.number);\n newCheckPoint.value = uint128(_value);\n } else {\n Checkpoint storage oldCheckPoint = checkpoints[checkpoints.length-1];\n oldCheckPoint.value = uint128(_value);\n }\n }\n}\n", "sourcePath": "@daostack/infra/contracts/Reputation.sol", "ast": { "absolutePath": "@daostack/infra/contracts/Reputation.sol", "exportedSymbols": { "Reputation": [ 11034 ] }, "id": 11035, "nodeType": "SourceUnit", "nodes": [ { "id": 10604, "literals": [ "solidity", "^", "0.5", ".4" ], "nodeType": "PragmaDirective", "src": "0:23:53" }, { "absolutePath": "openzeppelin-solidity/contracts/ownership/Ownable.sol", "file": "openzeppelin-solidity/contracts/ownership/Ownable.sol", "id": 10605, "nodeType": "ImportDirective", "scope": 11035, "sourceUnit": 16029, "src": "25:63:53", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 10606, "name": "Ownable", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 16028, "src": "596:7:53", "typeDescriptions": { "typeIdentifier": "t_contract$_Ownable_$16028", "typeString": "contract Ownable" } }, "id": 10607, "nodeType": "InheritanceSpecifier", "src": "596:7:53" } ], "contractDependencies": [ 16028 ], "contractKind": "contract", "documentation": "@title Reputation system\n@dev A DAO has Reputation System which allows peers to rate other peers in order to build trust .\nA reputation is use to assign influence measure to a DAO'S peers.\nReputation is similar to regular tokens but with one crucial difference: It is non-transferable.\nThe Reputation contract maintain a map of address to reputation value.\nIt provides an onlyOwner functions to mint and burn reputation _to (or _from) a specific address.", "fullyImplemented": true, "id": 11034, "linearizedBaseContracts": [ 11034, 16028 ], "name": "Reputation", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 10610, "name": "decimals", "nodeType": "VariableDeclaration", "scope": 11034, "src": "611:26:53", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 10608, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "611:5:53", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "argumentTypes": null, "hexValue": "3138", "id": 10609, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "635:2:53", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_18_by_1", "typeString": "int_const 18" }, "value": "18" }, "visibility": "public" }, { "anonymous": false, "documentation": null, "id": 10616, "name": "Mint", "nodeType": "EventDefinition", "parameters": { "id": 10615, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 10612, "indexed": true, "name": "_to", "nodeType": "VariableDeclaration", "scope": 10616, "src": "769:19:53", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 10611, "name": "address", "nodeType": "ElementaryTypeName", "src": "769:7:53", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { 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