@reality.eth/contracts

{ "contractName": "ERC20", "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "name": "from", "type": "address" }, { "indexed": true, "name": "to", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "owner", "type": "address" }, { "indexed": true, "name": "spender", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "constant": false, "inputs": [ { "name": "to", "type": "address" }, { "name": "val", "type": "uint256" } ], "name": "mint", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "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": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "owner", "type": "address" }, { "name": "spender", "type": "address" } ], "name": "allowance", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "to", "type": "address" }, { "name": "value", "type": "uint256" } ], "name": "transfer", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "spender", "type": "address" }, { "name": "value", "type": "uint256" } ], "name": "approve", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "from", "type": "address" }, { "name": "to", "type": "address" }, { "name": "value", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "spender", "type": "address" }, { "name": "addedValue", "type": "uint256" } ], "name": "increaseAllowance", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "spender", "type": "address" }, { "name": "subtractedValue", "type": "uint256" } ], "name": "decreaseAllowance", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "bytecode": 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"source": "pragma solidity ^0.4.24;\n\n/**\n * @title SafeMath\n * @dev Math operations with safety checks that revert on error\n */\nlibrary SafeMath {\n /**\n * @dev Multiplies two numbers, reverts on overflow.\n */\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n // benefit is lost if 'b' is also tested.\n // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n require(c / a == b);\n\n return c;\n }\n\n /**\n * @dev Integer division of two numbers truncating the quotient, reverts on division by zero.\n */\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n // Solidity only automatically asserts when dividing by 0\n require(b > 0);\n uint256 c = a / b;\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n return c;\n }\n\n /**\n * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).\n */\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n require(b <= a);\n uint256 c = a - b;\n\n return c;\n }\n\n /**\n * @dev Adds two numbers, reverts on overflow.\n */\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n require(c >= a);\n\n return c;\n }\n\n /**\n * @dev Divides two numbers and returns the remainder (unsigned integer modulo),\n * reverts when dividing by zero.\n */\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n require(b != 0);\n return a % b;\n }\n}\n\n/**\n * @title ERC20 interface\n * @dev see https://github.com/ethereum/EIPs/issues/20\n */\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(address owner, address spender) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(address from, address to, uint256 value) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n\n/**\n * @title Standard ERC20 token\n *\n * @dev Implementation of the basic standard token.\n * https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md\n * Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol\n */\ncontract ERC20 is IERC20 {\n using SafeMath for uint256;\n\n mapping (address => uint256) private _balances;\n\n mapping (address => mapping (address => uint256)) private _allowed;\n\n uint256 private _totalSupply;\n\n function mint(address to, uint256 val) \n public {\n _mint(to, val);\n }\n\n /**\n * @dev Total number of tokens in existence\n */\n function totalSupply() public view returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev Gets the balance of the specified address.\n * @param owner The address to query the balance of.\n * @return An uint256 representing the amount owned by the passed address.\n */\n function balanceOf(address owner) public view returns (uint256) {\n return _balances[owner];\n }\n\n /**\n * @dev Function to check the amount of tokens that an owner allowed to a spender.\n * @param owner address The address which owns the funds.\n * @param spender address The address which will spend the funds.\n * @return A uint256 specifying the amount of tokens still available for the spender.\n */\n function allowance(address owner, address spender) public view returns (uint256) {\n return _allowed[owner][spender];\n }\n\n /**\n * @dev Transfer token for a specified address\n * @param to The address to transfer to.\n * @param value The amount to be transferred.\n */\n function transfer(address to, uint256 value) public returns (bool) {\n _transfer(msg.sender, to, value);\n return true;\n }\n\n /**\n * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.\n * Beware that changing an allowance with this method brings the risk that someone may use both the old\n * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this\n * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n * @param spender The address which will spend the funds.\n * @param value The amount of tokens to be spent.\n */\n function approve(address spender, uint256 value) public returns (bool) {\n require(spender != address(0));\n\n _allowed[msg.sender][spender] = value;\n emit Approval(msg.sender, spender, value);\n return true;\n }\n\n /**\n * @dev Transfer tokens from one address to another\n * @param from address The address which you want to send tokens from\n * @param to address The address which you want to transfer to\n * @param value uint256 the amount of tokens to be transferred\n */\n function transferFrom(address from, address to, uint256 value) public returns (bool) {\n _allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);\n _transfer(from, to, value);\n return true;\n }\n\n /**\n * @dev Increase the amount of tokens that an owner allowed to a spender.\n * approve should be called when allowed_[_spender] == 0. To increment\n * allowed value is better to use this function to avoid 2 calls (and wait until\n * the first transaction is mined)\n * From MonolithDAO Token.sol\n * @param spender The address which will spend the funds.\n * @param addedValue The amount of tokens to increase the allowance by.\n */\n function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {\n require(spender != address(0));\n\n _allowed[msg.sender][spender] = _allowed[msg.sender][spender].add(addedValue);\n emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);\n return true;\n }\n\n /**\n * @dev Decrease the amount of tokens that an owner allowed to a spender.\n * approve should be called when allowed_[_spender] == 0. To decrement\n * allowed value is better to use this function to avoid 2 calls (and wait until\n * the first transaction is mined)\n * From MonolithDAO Token.sol\n * @param spender The address which will spend the funds.\n * @param subtractedValue The amount of tokens to decrease the allowance by.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {\n require(spender != address(0));\n\n _allowed[msg.sender][spender] = _allowed[msg.sender][spender].sub(subtractedValue);\n emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);\n return true;\n }\n\n /**\n * @dev Transfer token for a specified addresses\n * @param from The address to transfer from.\n * @param to The address to transfer to.\n * @param value The amount to be transferred.\n */\n function _transfer(address from, address to, uint256 value) internal {\n require(to != address(0));\n\n _balances[from] = _balances[from].sub(value);\n _balances[to] = _balances[to].add(value);\n emit Transfer(from, to, value);\n }\n\n /**\n * @dev Internal function that mints an amount of the token and assigns it to\n * an account. This encapsulates the modification of balances such that the\n * proper events are emitted.\n * @param account The account that will receive the created tokens.\n * @param value The amount that will be created.\n */\n function _mint(address account, uint256 value) internal {\n require(account != address(0));\n\n _totalSupply = _totalSupply.add(value);\n _balances[account] = _balances[account].add(value);\n emit Transfer(address(0), account, value);\n }\n\n /**\n * @dev Internal function that burns an amount of the token of a given\n * account.\n * @param account The account whose tokens will be burnt.\n * @param value The amount that will be burnt.\n */\n function _burn(address account, uint256 value) internal {\n require(account != address(0));\n\n _totalSupply = _totalSupply.sub(value);\n _balances[account] = _balances[account].sub(value);\n emit Transfer(account, address(0), value);\n }\n\n /**\n * @dev Internal function that burns an amount of the token of a given\n * account, deducting from the sender's allowance for said account. 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