arc_dx

{ "contractName": "Reputation", "abi": [ { "constant": true, "inputs": [], "name": "creationBlock", "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": "renounceOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "name": "", "type": "address" } ], "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" } ], "name": "OwnershipRenounced", "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": "_owner", "type": "address" }, { "name": "_amount", "type": "uint256" } ], "name": "mint", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_owner", "type": "address" }, { "name": "_amount", "type": "uint256" } ], "name": "burn", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "bytecode": 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"source": "pragma solidity ^0.4.25;\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 // `creationBlock` is the block number that the Clone Token was created\n uint public creationBlock;\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 MiniMeToken\n constructor(\n ) public\n {\n creationBlock = block.number;\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 (uint) {\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, uint _blockNumber)\n public view returns (uint)\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(uint _blockNumber) public view returns(uint) {\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 _owner 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 _owner, uint _amount) public onlyOwner returns (bool) {\n uint curTotalSupply = totalSupply();\n require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow\n uint previousBalanceTo = balanceOf(_owner);\n require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow\n updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);\n updateValueAtNow(balances[_owner], previousBalanceTo + _amount);\n emit Mint(_owner, _amount);\n return true;\n }\n\n /// @notice Burns `_amount` reputation from `_owner`\n /// @param _owner 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 _owner, uint _amount) public onlyOwner returns (bool) {\n uint curTotalSupply = totalSupply();\n uint amountBurned = _amount;\n if (curTotalSupply < amountBurned) {\n amountBurned = curTotalSupply;\n }\n uint previousBalanceFrom = balanceOf(_owner);\n if (previousBalanceFrom < amountBurned) {\n amountBurned = previousBalanceFrom;\n }\n //require(previousBalanceFrom >= _amount);\n updateValueAtNow(totalSupplyHistory, curTotalSupply - amountBurned);\n updateValueAtNow(balances[_owner], previousBalanceFrom - amountBurned);\n emit Burn(_owner, 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, uint _block) internal view returns (uint) {\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 uint min = 0;\n uint max = checkpoints.length-1;\n while (max > min) {\n uint 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, uint _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": [ 13407 ] }, "id": 13408, "nodeType": "SourceUnit", "nodes": [ { "id": 12961, "literals": [ "solidity", "^", "0.4", ".25" ], "nodeType": "PragmaDirective", "src": "0:24:40" }, { "absolutePath": "openzeppelin-solidity/contracts/ownership/Ownable.sol", "file": "openzeppelin-solidity/contracts/ownership/Ownable.sol", "id": 12962, "nodeType": "ImportDirective", "scope": 13408, "sourceUnit": 20878, "src": "26:63:40", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 12963, "name": "Ownable", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 20877, "src": "597:7:40", "typeDescriptions": { "typeIdentifier": "t_contract$_Ownable_$20877", "typeString": "contract Ownable" } }, "id": 12964, "nodeType": "InheritanceSpecifier", "src": "597:7:40" } ], "contractDependencies": [ 20877 ], "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": 13407, "linearizedBaseContracts": [ 13407, 20877 ], "name": "Reputation", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 12967, "name": "decimals", "nodeType": "VariableDeclaration", "scope": 13407, "src": "612:26:40", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 12965, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "612:5:40", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "argumentTypes": null, "hexValue": "3138", "id": 12966, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "636:2:40", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_18_by_1", "typeString": "int_const 18" }, "value": "18" }, "visibility": "public" }, { "anonymous": false, "documentation": null, "id": 12973, "name": "Mint", "nodeType": "EventDefinition", "parameters": { "id": 12972, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 12969, "indexed": true, "name": "_to", "nodeType": "VariableDeclaration", "scope": 12973, "src": "770:19:40", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 12968, "name": 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Reputation.Checkpoint[])" }, "typeName": { "id": 12990, "keyType": { "id": 12987, "name": "address", "nodeType": "ElementaryTypeName", "src": "1666:7:40", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1657:33:40", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_array$_t_struct$_Checkpoint_$12984_storage_$dyn_storage_$", "typeString": "mapping(address => struct Reputation.Checkpoint[])" }, "valueType": { "baseType": { "contractScope": null, "id": 12988, "name": "Checkpoint", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12984, "src": "1677:10:40", "typeDescriptions": { "typeIdentifier": "t_struct$_Checkpoint_$12984_storage_ptr", "typeString": "struct Reputation.Checkpoint" } }, "id": 12989, "length": null, "nodeType": "ArrayTypeName", "src": "1677:12:40", "typeDescriptions": { "typeIdentifier": "t_array$_t_struct$_Checkpoint_$12984_storage_$dyn_storage_ptr", "typeString": "struct Reputation.Checkpoint[]" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 12994, "name": "totalSupplyHistory", "nodeType": "VariableDeclaration", "scope": 13407, "src": "1773:31:40", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_array$_t_struct$_Checkpoint_$12984_storage_$dyn_storage", "typeString": "struct Reputation.Checkpoint[]" }, "typeName": { "baseType": { "contractScope": null, "id": 12992, "name": "Checkpoint", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12984, "src": "1773:10:40", "typeDescriptions": { "typeIdentifier": "t_struct$_Checkpoint_$12984_storage_ptr", "typeString": "struct Reputation.Checkpoint" } }, "id": 12993, "length": null, "nodeType": "ArrayTypeName", "src": "1773:12:40", "typeDescriptions": { "typeIdentifier": "t_array$_t_struct$_Checkpoint_$12984_storage_$dyn_storage_ptr", "typeString": "struct Reputation.Checkpoint[]" } }, "value": null, "visibility": "internal" }, { "body": { "id": 13002, "nodeType": "Block", "src": "1893:45:40", "statements": [ { "expression": { "argumentTypes": null, "id": 13000, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 12997, "name": "creationBlock", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 12986, "src": "1903:13:40", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 12998, "name": "block", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 21539, "src": "1919:5:40", "typeDescriptions": { "typeIdentifier": "t_magic_block", "typeString": "block" } }, "id": 12999, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "number", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1919:12:40", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1903:28:40", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 13001, "nodeType": "ExpressionStatement", "src": "1903:28:40" } ] }, "documentation": "@notice Constructor to create a MiniMeToken", "id": 13003, "implemented": true, "isConstructor": true, "isDeclaredConst": false, "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 12995, "nodeType": "ParameterList", "parameters": [], "src": "1874:7:40" }, "payable": false, "returnParameters": { "id": 12996, "nodeType": "ParameterList", "parameters": [], "src": "1893:0:40" }, "scope": 13407, "src": "1863:75:40", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 13013, "nodeType": "Block", "src": "2120:51:40", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 13009, "name": "block", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 21539, "src": "2151:5:40", "typeDescriptions": { "typeIdentifier": "t_magic_block", "typeString": "block" } }, "id": 13010, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "number", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2151:12:40", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 13008, "name": "totalSupplyAt", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13098, "src": "2137:13:40", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_uint256_$", "typeString": "function (uint256) view returns (uint256)" } }, "id": 13011, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2137:27:40", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 13007, "id": 13012, "nodeType": "Return", "src": "2130:34:40" } ] }, "documentation": "@dev This function makes it easy to get the total number of reputation\n @return The total number of reputation", "id": 13014, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "parameters": { "id": 13004, "nodeType": "ParameterList", "parameters": [], "src": "2090:2:40" }, "payable": false, "return