{ "contractName": "RewardsDistributionRecipient", "abi": [ { "constant": true, "inputs": [], "name": "rewardsDistribution", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "uint256", "name": "reward", "type": "uint256" } ], "name": "notifyRewardAmount", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.16+commit.9c3226ce\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":false,\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"reward\",\"type\":\"uint256\"}],\"name\":\"notifyRewardAmount\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"rewardsDistribution\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/Users/warrenmason/Documents/UniswapV3Contracts/Core/LiveContracts/StakingRewardsFactory/contracts/StakingRewardsFactory.sol\":\"RewardsDistributionRecipient\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/Users/warrenmason/Documents/UniswapV3Contracts/Core/LiveContracts/StakingRewardsFactory/contracts/StakingRewardsFactory.sol\":{\"keccak256\":\"0xec9eab1f88b2d57691ecd0831d0ff7af15d6cb2000118d17d5de23f1654c1e3f\",\"urls\":[\"bzz-raw://4e62279c410e6446bb21630752f4608d48b048a93e3e0c854745869dd233908e\",\"dweb:/ipfs/Qmbx3MXnsNrb5iexnuZt1oFd9b5WPphKLyX9KTZQWcoLhM\"]}},\"version\":1}", "bytecode": "0x", "deployedBytecode": "0x", "sourceMap": "", "deployedSourceMap": "", "source": "//SPDX-License-Identifier: MIT\npragma solidity >=0.5.16;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP. Does not include\n * the optional functions; to access them see `ERC20Detailed`.\n */\ninterface IERC20 {\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `recipient`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a `Transfer` event.\n */\n function transfer(address recipient, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through `transferFrom`. This is\n * zero by default.\n *\n * This value changes when `approve` or `transferFrom` are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * > Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an `Approval` event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a `Transfer` event.\n */\n function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to `approve`. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be aplied to your functions to restrict their use to\n * the owner.\n */\ncontract Ownable {\n address private _owner;\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n /**\n * @dev Initializes the contract setting the deployer as the initial owner.\n */\n constructor () internal{\n _owner = msg.sender;\n emit OwnershipTransferred(address(0), _owner);\n }\n\n /**\n * @dev Returns the address of the current owner.\n */\n function owner() public view returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if called by any account other than the owner.\n */\n modifier onlyOwner() {\n require(isOwner(), \"Ownable: caller is not the owner\");\n _;\n }\n\n /**\n * @dev Returns true if the caller is the current owner.\n */\n function isOwner() public view returns (bool) {\n return msg.sender == _owner;\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions anymore. Can only be called by the current owner.\n *\n * > Note: Renouncing ownership will leave the contract without an owner,\n * thereby removing any functionality that is only available to the owner.\n */\n function renounceOwnership() public onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n _owner = address(0);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Can only be called by the current owner.\n */\n function transferOwnership(address newOwner) public onlyOwner {\n _transferOwnership(newOwner);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n */\n function _transferOwnership(address newOwner) internal {\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n emit OwnershipTransferred(_owner, newOwner);\n _owner = newOwner;\n }\n}\n\n/**\n * @dev Wrappers over Solidity's arithmetic operations with added overflow\n * checks.\n *\n * Arithmetic operations in Solidity wrap on overflow. This can easily result\n * in bugs, because programmers usually assume that an overflow raises an\n * error, which is the standard behavior in high level programming languages.\n * `SafeMath` restores this intuition by reverting the transaction when an\n * operation overflows.\n *\n * Using this library instead of the unchecked operations eliminates an entire\n * class of bugs, so it's recommended to use it always.\n */\nlibrary SafeMath {\n /**\n * @dev Returns the addition of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `+` operator.\n *\n * Requirements:\n * - Addition cannot overflow.\n */\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n * - Subtraction cannot overflow.\n */\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n require(b <= a, \"SafeMath: subtraction overflow\");\n uint256 c = a - b;\n\n return c;\n }\n\n /**\n * @dev Returns the multiplication of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `*` operator.\n *\n * Requirements:\n * - Multiplication cannot 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, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers. Reverts on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n * - The divisor cannot be 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, \"SafeMath: division by zero\");\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 Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * Reverts when dividing by zero.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n * - The divisor cannot be zero.\n */\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n require(b != 0, \"SafeMath: modulo by zero\");\n return a % b;\n }\n}\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary Math {\n /**\n * @dev Returns the largest of two numbers.\n */\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n return a >= b ? a : b;\n }\n\n /**\n * @dev Returns the smallest of two numbers.\n */\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n return a < b ? a : b;\n }\n\n /**\n * @dev Returns the average of two numbers. The result is rounded towards\n * zero.\n */\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n // (a + b) / 2 can overflow, so we distribute\n return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);\n }\n}\n\n/**\n * @dev Optional functions from the ERC20 standard.\n */\ncontract ERC20Detailed is IERC20 {\n string private _name;\n string private _symbol;\n uint8 private _decimals;\n\n /**\n * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of\n * these values are immutable: they can only be set once during\n * construction.\n */\n constructor (string memory name, string memory symbol, uint8 decimals) public {\n _name = name;\n _symbol = symbol;\n _decimals = decimals;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5,05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei.\n *\n * > Note that this information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * `IERC20.balanceOf` and `IERC20.transfer`.\n */\n function decimals() public view returns (uint8) {\n return _decimals;\n }\n}\n\n/**\n * @dev Collection of functions related to the address type,\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * This test is non-exhaustive, and there may be false-negatives: during the\n * execution of a contract's constructor, its address will be reported as\n * not containing a contract.\n *\n * > It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies in extcodesize, which returns 0 for contracts in\n // construction, since the code is only stored at the end of the\n // constructor execution.\n\n uint256 size;\n // solhint-disable-next-line no-inline-assembly\n assembly { size := extcodesize(account) }\n return size > 0;\n }\n}\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using SafeMath for uint256;\n using Address for address;\n\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n function safeApprove(IERC20 token, address spender, uint256 value) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n // solhint-disable-next-line max-line-length\n require((value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 newAllowance = token.allowance(address(this), spender).add(value);\n callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 newAllowance = token.allowance(address(this), spender).sub(value);\n callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves.\n\n // A Solidity high level call has three parts:\n // 1. The target address is checked to verify it contains contract code\n // 2. The call itself is made, and success asserted\n // 3. The return value is decoded, which in turn checks the size of the returned data.\n // solhint-disable-next-line max-line-length\n require(address(token).isContract(), \"SafeERC20: call to non-contract\");\n\n // solhint-disable-next-line avoid-low-level-calls\n (bool success, bytes memory returndata) = address(token).call(data);\n require(success, \"SafeERC20: low-level call failed\");\n\n if (returndata.length > 0) { // Return data is optional\n // solhint-disable-next-line max-line-length\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the `nonReentrant` modifier\n * available, which can be aplied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n */\ncontract ReentrancyGuard {\n /// @dev counter to allow mutex lock with only one SSTORE operation\n uint256 private _guardCounter;\n\n constructor () internal {\n // The counter starts at one to prevent changing it from zero to a non-zero\n // value, which is a more expensive operation.\n _guardCounter = 1;\n }\n\n /**\n * @dev Prevents a contract from calling itself, directly or indirectly.\n * Calling a `nonReentrant` function from another `nonReentrant`\n * function is not supported. It is possible to prevent this from happening\n * by making the `nonReentrant` function external, and make it call a\n * `private` function that does the actual work.\n */\n modifier nonReentrant() {\n _guardCounter += 1;\n uint256 localCounter = _guardCounter;\n _;\n require(localCounter == _guardCounter, \"ReentrancyGuard: reentrant call\");\n }\n}\n\n// Inheritance\ninterface IStakingRewards {\n // Views\n function lastTimeRewardApplicable() external view returns (uint256);\n\n function rewardPerToken() external view returns (uint256);\n\n function earned(address account) external view returns (uint256);\n\n function getRewardForDuration() external view returns (uint256);\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n // Mutative\n\n function stake(uint256 amount) external;\n\n function withdraw(uint256 amount) external;\n\n function getReward() external;\n\n function exit() external;\n}\n\ncontract RewardsDistributionRecipient {\n address public rewardsDistribution;\n\n function notifyRewardAmount(uint256 reward) external;\n\n modifier onlyRewardsDistribution() {\n require(msg.sender == rewardsDistribution, \"Caller is not RewardsDistribution contract\");\n _;\n }\n}\n\ncontract StakingRewards is IStakingRewards, RewardsDistributionRecipient, ReentrancyGuard {\n using SafeMath for uint256;\n using SafeERC20 for IERC20;\n\n /* ========== STATE VARIABLES ========== */\n\n IERC20 public rewardsToken;\n IERC20 public stakingToken;\n uint256 public periodFinish = 0;\n uint256 public rewardRate = 0;\n uint256 public rewardsDuration;\n uint256 public lastUpdateTime;\n uint256 public rewardPerTokenStored;\n\n mapping(address => uint256) public userRewardPerTokenPaid;\n mapping(address => uint256) public rewards;\n\n uint256 private _totalSupply;\n mapping(address => uint256) private _balances;\n\n /* ========== CONSTRUCTOR ========== */\n\n constructor(\n address _rewardsDistribution,\n address _rewardsToken,\n address _stakingToken,\n uint256 _rewardsDuration\n ) public {\n rewardsToken = IERC20(_rewardsToken);\n stakingToken = IERC20(_stakingToken);\n rewardsDistribution = _rewardsDistribution;\n rewardsDuration = _rewardsDuration;\n }\n\n /* ========== VIEWS ========== */\n\n function totalSupply() external view returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(address account) external view returns (uint256) {\n return _balances[account];\n }\n\n function lastTimeRewardApplicable() public view returns (uint256) {\n return Math.min(block.timestamp, periodFinish);\n }\n\n function rewardPerToken() public view returns (uint256) {\n if (_totalSupply == 0) {\n return rewardPerTokenStored;\n }\n return\n rewardPerTokenStored.add(\n lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRate).mul(1e18).div(_totalSupply)\n );\n }\n\n function earned(address account) public view returns (uint256) {\n return _balances[account].mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]);\n }\n\n function getRewardForDuration() external view returns (uint256) {\n return rewardRate.mul(rewardsDuration);\n }\n\n /* ========== MUTATIVE FUNCTIONS ========== */\n\n function stakeWithPermit(uint256 amount, uint deadline, uint8 v, bytes32 r, bytes32 s) external nonReentrant updateReward(msg.sender) {\n require(amount > 0, \"Cannot stake 0\");\n _totalSupply = _totalSupply.add(amount);\n _balances[msg.sender] = _balances[msg.sender].add(amount);\n\n // permit\n IUniswapV2ERC20(address(stakingToken)).permit(msg.sender, address(this), amount, deadline, v, r, s);\n\n stakingToken.safeTransferFrom(msg.sender, address(this), amount);\n emit Staked(msg.sender, amount);\n }\n\n function stake(uint256 amount) external nonReentrant updateReward(msg.sender) {\n require(amount > 0, \"Cannot stake 0\");\n _totalSupply = _totalSupply.add(amount);\n _balances[msg.sender] = _balances[msg.sender].add(amount);\n stakingToken.safeTransferFrom(msg.sender, address(this), amount);\n emit Staked(msg.sender, amount);\n }\n\n function withdraw(uint256 amount) public nonReentrant updateReward(msg.sender) {\n require(amount > 0, \"Cannot withdraw 0\");\n _totalSupply = _totalSupply.sub(amount);\n _balances[msg.sender] = _balances[msg.sender].sub(amount);\n stakingToken.safeTransfer(msg.sender, amount);\n emit Withdrawn(msg.sender, amount);\n }\n\n function getReward() public nonReentrant updateReward(msg.sender) {\n uint256 reward = rewards[msg.sender];\n if (reward > 0) {\n rewards[msg.sender] = 0;\n rewardsToken.safeTransfer(msg.sender, reward);\n emit RewardPaid(msg.sender, reward);\n }\n }\n\n function exit() external {\n withdraw(_balances[msg.sender]);\n getReward();\n }\n\n /* ========== RESTRICTED FUNCTIONS ========== */\n\n function notifyRewardAmount(uint256 reward) external onlyRewardsDistribution updateReward(address(0)) {\n if (block.timestamp >= periodFinish) {\n rewardRate = reward.div(rewardsDuration);\n } else {\n uint256 remaining = periodFinish.sub(block.timestamp);\n uint256 leftover = remaining.mul(rewardRate);\n rewardRate = reward.add(leftover).div(rewardsDuration);\n }\n\n // Ensure the provided reward amount is not more than the balance in the contract.\n // This keeps the reward rate in the right range, preventing overflows due to\n // very high values of rewardRate in the earned and rewardsPerToken functions;\n // Reward + leftover must be less than 2^256 / 10^18 to avoid overflow.\n uint balance = rewardsToken.balanceOf(address(this));\n require(rewardRate <= balance.div(rewardsDuration), \"Provided reward too high\");\n\n lastUpdateTime = block.timestamp;\n periodFinish = block.timestamp.add(rewardsDuration);\n emit RewardAdded(reward);\n }\n\n /* ========== MODIFIERS ========== */\n\n modifier updateReward(address account) {\n rewardPerTokenStored = rewardPerToken();\n lastUpdateTime = lastTimeRewardApplicable();\n if (account != address(0)) {\n rewards[account] = earned(account);\n userRewardPerTokenPaid[account] = rewardPerTokenStored;\n }\n _;\n }\n\n /* ========== EVENTS ========== */\n\n event RewardAdded(uint256 reward);\n event Staked(address indexed user, uint256 amount);\n event Withdrawn(address indexed user, uint256 amount);\n event RewardPaid(address indexed user, uint256 reward);\n}\n\ninterface IUniswapV2ERC20 {\n function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;\n}\n\ncontract StakingRewardsFactory is Ownable {\n // immutables\n address public rewardsToken;\n uint public stakingRewardsGenesis;\n\n // the staking tokens for which the rewards contract has been deployed\n address[] public stakingTokens;\n\n // info about rewards for a particular staking token\n struct StakingRewardsInfo {\n address stakingRewards;\n uint rewardAmount;\n }\n\n // rewards info by staking token\n mapping(address => StakingRewardsInfo) public stakingRewardsInfoByStakingToken;\n\n constructor(\n address _rewardsToken,\n uint _stakingRewardsGenesis\n ) Ownable() public {\n\n rewardsToken = _rewardsToken;\n stakingRewardsGenesis = _stakingRewardsGenesis;\n }\n\n ///// permissioned functions\n\n // deploy a staking reward contract for the staking token, and store the reward amount\n // the reward will be distributed to the staking reward contract no sooner than the genesis\n function deploy(address stakingToken, uint rewardAmount, uint256 rewardsDuration) public onlyOwner {\n StakingRewardsInfo storage info = stakingRewardsInfoByStakingToken[stakingToken];\n require(info.stakingRewards == address(0), 'StakingRewardsFactory::deploy: already deployed');\n\n info.stakingRewards = address(new StakingRewards(/*_rewardsDistribution=*/ address(this), rewardsToken, stakingToken, rewardsDuration));\n info.rewardAmount = rewardAmount;\n stakingTokens.push(stakingToken);\n }\n\n ///// permissionless functions\n\n // call notifyRewardAmount for all staking tokens.\n function notifyRewardAmounts() public {\n require(stakingTokens.length > 0, 'StakingRewardsFactory::notifyRewardAmounts: called before any deploys');\n for (uint i = 0; i < stakingTokens.length; i++) {\n notifyRewardAmount(stakingTokens[i]);\n }\n }\n\n // notify reward amount for an individual staking token.\n // this is a fallback in case the notifyRewardAmounts costs too much gas to call for all contracts\n function notifyRewardAmount(address stakingToken) public {\n require(block.timestamp >= stakingRewardsGenesis, 'StakingRewardsFactory::notifyRewardAmount: not ready');\n\n StakingRewardsInfo storage info = stakingRewardsInfoByStakingToken[stakingToken];\n require(info.stakingRewards != address(0), 'StakingRewardsFactory::notifyRewardAmount: not deployed');\n\n if (info.rewardAmount > 0) {\n uint rewardAmount = info.rewardAmount;\n info.rewardAmount = 0;\n\n require(\n IERC20(rewardsToken).transfer(info.stakingRewards, rewardAmount),\n 'StakingRewardsFactory::notifyRewardAmount: transfer failed'\n );\n StakingRewards(info.stakingRewards).notifyRewardAmount(rewardAmount);\n }\n }\n}", "sourcePath": "/Users/warrenmason/Documents/UniswapV3Contracts/Core/LiveContracts/StakingRewardsFactory/contracts/StakingRewardsFactory.sol", "ast": { "absolutePath": "/Users/warrenmason/Documents/UniswapV3Contracts/Core/LiveContracts/StakingRewardsFactory/contracts/StakingRewardsFactory.sol", "exportedSymbols": { "Address": [ 447 ], "ERC20Detailed": [ 430 ], "IERC20": [ 68 ], "IStakingRewards": [ 742 ], "IUniswapV2ERC20": [ 1354 ], "Math": [ 375 ], "Ownable": [ 177 ], "ReentrancyGuard": [ 691 ], "RewardsDistributionRecipient": [ 762 ], "SafeERC20": [ 661 ], "SafeMath": [ 308 ], "StakingRewards": [ 1336 ], "StakingRewardsFactory": [ 1545 ] }, "id": 1546, "nodeType": "SourceUnit", "nodes": [ { "id": 1, "literals": [ "solidity", ">=", "0.5", ".16" ], "nodeType": "PragmaDirective", "src": "31:25:0" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "interface", "documentation": "@dev Interface of the ERC20 standard as defined in the EIP. Does not include\nthe optional functions; to access them see `ERC20Detailed`.", "fullyImplemented": false, "id": 68, "linearizedBaseContracts": [ 68 ], "name": "IERC20", "nodeType": "ContractDefinition", "nodes": [ { "body": null, "documentation": "@dev Returns the amount of tokens in existence.", "id": 6, "implemented": false, "kind": "function", "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "parameters": { "id": 2, "nodeType": "ParameterList", "parameters": [], "src": "323:2:0" }, "returnParameters": { "id": 5, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4, "name": "", "nodeType": "VariableDeclaration", "scope": 6, "src": "349:7:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "349:7:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "348:9:0" }, "scope": 68, "src": "303:55:0", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": "@dev Returns the amount of tokens owned by `account`.", "id": 13, "implemented": false, "kind": "function", "modifiers": [], "name": "balanceOf", "nodeType": "FunctionDefinition", "parameters": { "id": 9, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 8, "name": "account", "nodeType": "VariableDeclaration", "scope": 13, "src": "460:15:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 7, "name": "address", "nodeType": "ElementaryTypeName", "src": "460:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "459:17:0" }, "returnParameters": { "id": 12, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 11, "name": "", "nodeType": "VariableDeclaration", "scope": 13, "src": "500:7:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 10, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "500:7:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "499:9:0" }, "scope": 68, "src": "441:68:0", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": "@dev Moves `amount` tokens from the caller's account to `recipient`.\n * Returns a boolean value indicating whether the operation succeeded.\n * Emits a `Transfer` event.", "id": 22, "implemented": false, "kind": "function", "modifiers": [], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 18, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 15, "name": "recipient", "nodeType": "VariableDeclaration", "scope": 22, "src": "747:17:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 14, "name": "address", "nodeType": "ElementaryTypeName", "src": "747:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 17, "name": "amount", "nodeType": "VariableDeclaration", "scope": 22, "src": "766:14:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 16, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "766:7:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "746:35:0" }, "returnParameters": { "id": 21, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20, "name": "", "nodeType": "VariableDeclaration", "scope": 22, "src": "800:4:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 19, "name": "bool", "nodeType": "ElementaryTypeName", "src": "800:4:0", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "799:6:0" }, "scope": 68, "src": "729:77:0", "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": "@dev Returns the remaining number of tokens that `spender` will be\nallowed to spend on behalf of `owner` through `transferFrom`. This is\nzero by default.\n * This value changes when `approve` or `transferFrom` are called.", "id": 31, "implemented": false, "kind": "function", "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 27, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 24, "name": "owner", "nodeType": "VariableDeclaration", "scope": 31, "src": "1100:13:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 23, "name": "address", "nodeType": "ElementaryTypeName", "src": "1100:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 26, "name": "spender", "nodeType": "VariableDeclaration", "scope": 31, "src": "1115:15:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 25, "name": "address", "nodeType": "ElementaryTypeName", "src": "1115:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1099:32:0" }, "returnParameters": { "id": 30, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 29, "name": "", "nodeType": "VariableDeclaration", "scope": 31, "src": "1155:7:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 28, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1155:7:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1154:9:0" }, "scope": 68, "src": "1081:83:0", "stateMutability": "view", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": "@dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n * Returns a boolean value indicating whether the operation succeeded.\n * > Beware that changing an allowance with this method brings the risk\nthat someone may use both the old and the new allowance by unfortunate\ntransaction ordering. One possible solution to mitigate this race\ncondition is to first reduce the spender's allowance to 0 and set the\ndesired value afterwards:\nhttps://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n * Emits an `Approval` event.", "id": 40, "implemented": false, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 36, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 33, "name": "spender", "nodeType": "VariableDeclaration", "scope": 40, "src": "1825:15:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 32, "name": "address", "nodeType": "ElementaryTypeName", "src": "1825:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 35, "name": "amount", 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"EventDefinition", "parameters": { "id": 58, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 53, "indexed": true, "name": "from", "nodeType": "VariableDeclaration", "scope": 59, "src": "2470:20:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 52, "name": "address", "nodeType": "ElementaryTypeName", "src": "2470:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 55, "indexed": true, "name": "to", "nodeType": "VariableDeclaration", "scope": 59, "src": "2492:18:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 54, "name": "address", "nodeType": "ElementaryTypeName", "src": "2492:7:0", "stateMutability": 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61, "indexed": true, "name": "owner", "nodeType": "VariableDeclaration", "scope": 67, "src": "2701:21:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 60, "name": "address", "nodeType": "ElementaryTypeName", "src": "2701:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 63, "indexed": true, "name": "spender", "nodeType": "VariableDeclaration", "scope": 67, "src": "2724:23:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 62, "name": "address", "nodeType": "ElementaryTypeName", "src": "2724:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, 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It will make available the modifier\n`onlyOwner`, which can be aplied to your functions to restrict their use to\nthe owner.", "fullyImplemented": true, "id": 177, "linearizedBaseContracts": [ 177 ], "name": "Ownable", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 70, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 177, "src": "3151:22:0", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 69, "name": "address", "nodeType": "ElementaryTypeName", "src": "3151:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "private" }, { "anonymous": false, "documentation": null, "id": 76, "name": "OwnershipTransferred", "nodeType": "EventDefinition", "parameters": { "id": 75, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 72, "indexed": 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false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3760:9:0", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "4f776e61626c653a2063616c6c6572206973206e6f7420746865206f776e6572", "id": 105, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3771:34:0", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_9924ebdf1add33d25d4ef888e16131f0a5687b0580a36c21b5c301a6c462effe", "typeString": "literal_string \"Ownable: caller is not the owner\"" }, "value": "Ownable: caller is not the owner" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_9924ebdf1add33d25d4ef888e16131f0a5687b0580a36c21b5c301a6c462effe", "typeString": "literal_string \"Ownable: caller is not the owner\"" } ], "id": 102, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 1563, 1564 ], "referencedDeclaration": 1564, "src": "3752:7:0", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 106, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3752:54:0", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 107, "nodeType": "ExpressionStatement", "src": "3752:54:0" }, { "id": 108, "nodeType": "PlaceholderStatement", "src": "3816:1:0" } ] }, "documentation": "@dev Throws if called by any account other than the owner.", "id": 110, "name": "onlyOwner", "nodeType": "ModifierDefinition", "parameters": { "id": 101, "nodeType": "ParameterList", "parameters": [], "src": "3739:2:0" }, "src": "3721:103:0", "visibility": "internal" }, { 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"typeName": { "id": 112, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3947:4:0", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3946:6:0" }, "scope": 177, "src": "3907:90:0", "stateMutability": "view", "superFunction": null, "visibility": "public" }, { "body": { "id": 139, "nodeType": "Block", "src": "4387:91:0", "statements": [ { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 127, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 70, "src": "4423:6:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 129, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4439:1:0", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 128, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4431:7:0", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 130, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4431:10:0", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address_payable", "typeString": "address payable" } ], "id": 126, "name": "OwnershipTransferred", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 76, "src": "4402:20:0", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$returns$__$", "typeString": "function (address,address)" } }, "id": 131, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4402:40:0", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 132, "nodeType": "EmitStatement", "src": "4397:45:0" }, { "expression": { "argumentTypes": null, "id": 137, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 133, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 70, "src": "4452:6:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": 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"typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "4452:19:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 138, "nodeType": "ExpressionStatement", "src": "4452:19:0" } ] }, "documentation": "@dev Leaves the contract without owner. It will not be possible to call\n`onlyOwner` functions anymore. Can only be called by the current owner.\n * > Note: Renouncing ownership will leave the contract without an owner,\nthereby removing any functionality that is only available to the owner.", "id": 140, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 124, "modifierName": { "argumentTypes": null, "id": 123, "name": "onlyOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 110, "src": "4377:9:0", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "4377:9:0" } ], "name": "renounceOwnership", "nodeType": "FunctionDefinition", "parameters": { "id": 122, "nodeType": "ParameterList", "parameters": [], "src": "4367:2:0" }, "returnParameters": { "id": 125, "nodeType": "ParameterList", "parameters": [], "src": "4387:0:0" }, "scope": 177, "src": "4341:137:0", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { 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"overloadedDeclarations": [], "referencedDeclaration": 154, "src": "4908:8:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 160, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4928:1:0", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 159, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4920:7:0", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 161, 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}, { "typeIdentifier": "t_stringliteral_245f15ff17f551913a7a18385165551503906a406f905ac1c2437281a7cd0cfe", "typeString": "literal_string \"Ownable: new owner is the zero address\"" } ], "id": 157, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 1563, 1564 ], "referencedDeclaration": 1564, "src": "4900:7:0", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 164, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4900:73:0", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 165, "nodeType": "ExpressionStatement", "src": "4900:73:0" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 167, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], 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"4988:38:0", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 170, "nodeType": "EmitStatement", "src": "4983:43:0" }, { "expression": { "argumentTypes": null, "id": 173, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 171, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 70, "src": "5036:6:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 172, "name": "newOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 154, "src": "5045:8:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "5036:17:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 174, "nodeType": "ExpressionStatement", "src": "5036:17:0" } ] }, "documentation": "@dev Transfers ownership of the contract to a new account (`newOwner`).", "id": 176, "implemented": true, "kind": "function", "modifiers": [], "name": "_transferOwnership", "nodeType": "FunctionDefinition", "parameters": { "id": 155, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 154, "name": "newOwner", "nodeType": "VariableDeclaration", "scope": 176, "src": "4863:16:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 153, "name": "address", "nodeType": "ElementaryTypeName", "src": "4863:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "4862:18:0" }, "returnParameters": { "id": 156, "nodeType": "ParameterList", "parameters": [], "src": "4890:0:0" }, "scope": 177, "src": "4835:225:0", 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This can easily result\nin bugs, because programmers usually assume that an overflow raises an\nerror, which is the standard behavior in high level programming languages.\n`SafeMath` restores this intuition by reverting the transaction when an\noperation overflows.\n * Using this library instead of the unchecked operations eliminates an entire\nclass of bugs, so it's recommended to use it always.", "fullyImplemented": true, "id": 308, "linearizedBaseContracts": [ 308 ], "name": "SafeMath", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 201, "nodeType": "Block", "src": "5940:109:0", "statements": [ { "assignments": [ 187 ], "declarations": [ { "constant": false, "id": 187, "name": "c", "nodeType": "VariableDeclaration", "scope": 201, "src": "5950:9:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 186, "name": "uint256", "nodeType": "ElementaryTypeName", "src": 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null, "id": 376, "name": "IERC20", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 68, "src": "9398:6:0", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$68", "typeString": "contract IERC20" } }, "id": 377, "nodeType": "InheritanceSpecifier", "src": "9398:6:0" } ], "contractDependencies": [ 68 ], "contractKind": "contract", "documentation": "@dev Optional functions from the ERC20 standard.", "fullyImplemented": false, "id": 430, "linearizedBaseContracts": [ 430, 68 ], "name": "ERC20Detailed", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 379, "name": "_name", "nodeType": "VariableDeclaration", "scope": 430, "src": "9411:20:0", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string" }, "typeName": { "id": 378, "name": "string", "nodeType": "ElementaryTypeName", "src": "9411:6:0", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "private" }, { "constant": false, "id": 381, "name": "_symbol", "nodeType": "VariableDeclaration", "scope": 430, "src": "9437:22:0", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string" }, "typeName": { "id": 380, "name": "string", "nodeType": "ElementaryTypeName", "src": "9437:6:0", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "private" }, { "constant": false, "id": 383, "name": "_decimals", "nodeType": "VariableDeclaration", "scope": 430, "src": "9465:23:0", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 382, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "9465:5:0", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": null, "visibility": "private" }, { "body": { "id": 404, "nodeType": "Block", "src": "9757:85:0", "statements": [ { "expression": { "argumentTypes": null, "id": 394, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 392, "name": "_name", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 379, "src": "9767:5:0", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 393, "name": "name", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 385, "src": "9775:4:0", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "9767:12:0", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "id": 395, "nodeType": "ExpressionStatement", "src": "9767:12:0" }, { "expression": { "argumentTypes": null, "id": 398, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 396, "name": "_symbol", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 381, "src": "9789:7:0", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 397, "name": "symbol", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 387, "src": "9799:6:0", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "9789:16:0", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "id": 399, "nodeType": "ExpressionStatement", "src": "9789:16:0" }, { "expression": { "argumentTypes": null, "id": 402, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 400, "name": "_decimals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 383, "src": "9815:9:0", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 401, "name": "decimals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 389, "src": "9827:8:0", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "src": "9815:20:0", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "id": 403, "nodeType": "ExpressionStatement", "src": "9815:20:0" } ] }, "documentation": "@dev Sets the values for `name`, `symbol`, and `decimals`. All three of\nthese values are immutable: they can only be set once during\nconstruction.", "id": 405, "implemented": true, "kind": "constructor", "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 390, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 385, "name": "name", "nodeType": "VariableDeclaration", "scope": 405, "src": "9692:18:0", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 384, "name": "string", "nodeType": "ElementaryTypeName", "src": "9692:6:0", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 387, "name": "symbol", "nodeType": "VariableDeclaration", "scope": 405, "src": "9712:20:0", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 386, "name": "string", "nodeType": "ElementaryTypeName", "src": "9712:6:0", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 389, "name": "decimals", "nodeType": "VariableDeclaration", "scope": 405, "src": "9734:14:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 388, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "9734:5:0", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": null, "visibility": "internal" } ], "src": "9691:58:0" }, "returnParameters": { "id": 391, "nodeType": "ParameterList", "parameters": [], "src": "9757:0:0" }, "scope": 430, "src": "9679:163:0", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 412, "nodeType": "Block", "src": "9959:29:0", "statements": [ { "expression": { "argumentTypes": null, "id": 410, "name": "_name", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 379, "src": "9976:5:0", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "functionReturnParameters": 409, "id": 411, "nodeType": "Return", "src": "9969:12:0" } ] }, "documentation": "@dev Returns the name of the token.", "id": 413, "implemented": true, "kind": "function", "modifiers": [], "name": "name", "nodeType": "FunctionDefinition", "parameters": { "id": 406, "nodeType": "ParameterList", "parameters": [], "src": "9920:2:0" }, "returnParameters": { "id": 409, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 408, "name": "", "nodeType": "VariableDeclaration", "scope": 413, "src": "9944:13:0", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 407, "name": "string", "nodeType": "ElementaryTypeName", "src": "9944:6:0", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "9943:15:0" }, "scope": 430, "src": "9907:81:0", "stateMutability": "view", "superFunction": null, "visibility": "public" }, { "body": { "id": 420, "nodeType": "Block", "src": "10155:31:0", "statements": [ { "expression": { "argumentTypes": null, "id": 418, "name": "_symbol", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 381, "src": "10172:7:0", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "functionReturnParameters": 417, "id": 419, "nodeType": "Return", "src": "10165:14:0" } ] }, "documentation": "@dev Returns the symbol of the token, usually a shorter version of the\nname.", "id": 421, "implemented": true, "kind": "function", "modifiers": [], "name": "symbol", "nodeType": "FunctionDefinition", "parameters": { "id": 414, "nodeType": "ParameterList", "parameters": [], "src": "10116:2:0" }, "returnParameters": { "id": 417, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 416, "name": "", "nodeType": "VariableDeclaration", "scope": 421, "src": "10140:13:0", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 415, "name": "string", "nodeType": "ElementaryTypeName", "src": "10140:6:0", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "10139:15:0" }, "scope": 430, "src": "10101:85:0", "stateMutability": "view", "superFunction": null, "visibility": "public" }, { "body": { "id": 428, "nodeType": "Block", "src": "10789:33:0", "statements": [ { "expression": { "argumentTypes": null, "id": 426, "name": "_decimals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 383, "src": "10806:9:0", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "functionReturnParameters": 425, "id": 427, "nodeType": "Return", "src": "10799:16:0" } ] }, "documentation": "@dev Returns the number of decimals used to get its user representation.\nFor example, if `decimals` equals `2`, a balance of `505` tokens should\nbe displayed to a user as `5,05` (`505 / 10 ** 2`).\n * Tokens usually opt for a value of 18, imitating the relationship between\nEther and Wei.\n * > Note that this information is only used for _display_ purposes: it in\nno way affects any of the arithmetic of the contract, including\n`IERC20.balanceOf` and `IERC20.transfer`.", "id": 429, "implemented": true, "kind": "function", "modifiers": [], "name": "decimals", "nodeType": "FunctionDefinition", "parameters": { "id": 422, "nodeType": "ParameterList", "parameters": [], "src": "10758:2:0" }, "returnParameters": { "id": 425, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 424, "name": "", "nodeType": "VariableDeclaration", "scope": 429, "src": "10782:5:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 423, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "10782:5:0", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": null, "visibility": "internal" } ], "src": "10781:7:0" }, "scope": 430, "src": "10741:81:0", "stateMutability": "view", "superFunction": null, "visibility": "public" } ], "scope": 1546, "src": "9372:1452:0" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": "@dev Collection of functions related to the address type,", "fullyImplemented": true, "id": 447, "linearizedBaseContracts": [ 447 ], "name": "Address", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 445, "nodeType": "Block", "src": "11409:347:0", "statements": [ { "assignments": [ 438 ], "declarations": [ { "constant": false, "id": 438, "name": "size", "nodeType": "VariableDeclaration", "scope": 445, "src": "11606:12:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 437, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11606:7:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 439, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "11606:12:0" }, { "externalReferences": [ { "account": { "declaration": 432, "isOffset": false, "isSlot": false, "src": "11715:7:0", "valueSize": 1 } }, { "size": { "declaration": 438, "isOffset": false, "isSlot": false, "src": "11695:4:0", "valueSize": 1 } } ], "id": 440, "nodeType": "InlineAssembly", "operations": "{ size := extcodesize(account) }", "src": "11684:41:0" }, { "expression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 443, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 441, "name": "size", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 438, "src": "11741:4:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 442, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "11748:1:0", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "11741:8:0", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 436, "id": 444, "nodeType": "Return", "src": "11734:15:0" } ] }, "documentation": "@dev Returns true if `account` is a contract.\n * This test is non-exhaustive, and there may be false-negatives: during the\nexecution of a contract's constructor, its address will be reported as\nnot containing a contract.\n * > It is unsafe to assume that an address for which this function returns\nfalse is an externally-owned account (EOA) and not a contract.", "id": 446, "implemented": true, "kind": "function", "modifiers": [], "name": "isContract", "nodeType": "FunctionDefinition", "parameters": { "id": 433, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 432, "name": "account", "nodeType": "VariableDeclaration", "scope": 446, "src": "11363:15:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 431, "name": "address", "nodeType": "ElementaryTypeName", "src": "11363:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "11362:17:0" }, "returnParameters": { "id": 436, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 435, "name": "", "nodeType": "VariableDeclaration", "scope": 446, "src": "11403:4:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 434, "name": "bool", "nodeType": "ElementaryTypeName", "src": "11403:4:0", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "11402:6:0" }, "scope": 447, "src": "11343:413:0", "stateMutability": "view", "superFunction": null, "visibility": "internal" } ], "scope": 1546, "src": "10895:863:0" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": "@title SafeERC20\n@dev Wrappers around ERC20 operations that throw on failure (when the token\ncontract returns false). Tokens that return no value (and instead revert or\nthrow on failure) are also supported, non-reverting calls are assumed to be\nsuccessful.\nTo use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,\nwhich allows you to call the safe operations as `token.safeTransfer(...)`, etc.", "fullyImplemented": true, "id": 661, "linearizedBaseContracts": [ 661 ], "name": "SafeERC20", "nodeType": "ContractDefinition", "nodes": [ { "id": 450, "libraryName": { "contractScope": null, "id": 448, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 308, "src": "12247:8:0", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$308", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "12241:27:0", "typeName": { "id": 449, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12260:7:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 453, "libraryName": { "contractScope": null, "id": 451, "name": "Address", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 447, "src": "12279:7:0", "typeDescriptions": { "typeIdentifier": "t_contract$_Address_$447", "typeString": "library Address" } }, "nodeType": "UsingForDirective", "src": "12273:26:0", "typeName": { "id": 452, "name": "address", "nodeType": "ElementaryTypeName", "src": "12291:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "body": { "id": 474, "nodeType": "Block", "src": "12377:102:0", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 463, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 455, "src": "12406:5:0", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$68", "typeString": "contract IERC20" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 466, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 455, "src": "12436:5:0", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$68", "typeString": "contract IERC20" } }, "id": 467, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transfer", "nodeType": "MemberAccess", "referencedDeclaration": 22, "src": "12436:14:0", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 468, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "12436:23:0", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "argumentTypes": null, "id": 469, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 457, "src": "12461:2:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 470, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 459, "src": "12465:5:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "id": 464, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1547, "src": "12413:3:0", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 465, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "12413:22:0", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 471, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12413:58:0", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$68", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 462, "name": "callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 660, "src": "12387:18:0", "typeDescriptions": { "typeIdentifier": 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"isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "24701:49:0", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_77d8567a7b7bf9a9a30ea727f6e525cae6667d736cdaff555c86db8d81648a1a", "typeString": "literal_string \"StakingRewardsFactory::deploy: already deployed\"" }, "value": "StakingRewardsFactory::deploy: already deployed" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_77d8567a7b7bf9a9a30ea727f6e525cae6667d736cdaff555c86db8d81648a1a", "typeString": "literal_string \"StakingRewardsFactory::deploy: already deployed\"" } ], "id": 1407, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 1563, 1564 ], "referencedDeclaration": 1564, "src": "24658:7:0", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1415, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "24658:93:0", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1416, "nodeType": "ExpressionStatement", "src": "24658:93:0" }, { "expression": { "argumentTypes": null, "id": 1431, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1417, "name": "info", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1402, "src": "24762:4:0", "typeDescriptions": { "typeIdentifier": "t_struct$_StakingRewardsInfo_$1368_storage_ptr", "typeString": "struct StakingRewardsFactory.StakingRewardsInfo storage pointer" } }, "id": 1419, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "stakingRewards", "nodeType": "MemberAccess", "referencedDeclaration": 1365, "src": "24762:19:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1424, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1598, "src": "24845:4:0", "typeDescriptions": { "typeIdentifier": "t_contract$_StakingRewardsFactory_$1545", "typeString": "contract StakingRewardsFactory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_StakingRewardsFactory_$1545", "typeString": "contract StakingRewardsFactory" } ], "id": 1423, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "24837:7:0", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 1425, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "24837:13:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 1426, "name": "rewardsToken", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1358, "src": "24852:12:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 1427, "name": "stakingToken", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1392, "src": "24866:12:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 1428, "name": "rewardsDuration", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1396, "src": "24880:15:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1422, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "NewExpression", "src": "24792:18:0", "typeDescriptions": { "typeIdentifier": "t_function_creation_nonpayable$_t_address_$_t_address_$_t_address_$_t_uint256_$returns$_t_contract$_StakingRewards_$1336_$", "typeString": "function (address,address,address,uint256) returns (contract StakingRewards)" }, "typeName": { "contractScope": null, "id": 1421, "name": "StakingRewards", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1336, "src": "24796:14:0", "typeDescriptions": { "typeIdentifier": "t_contract$_StakingRewards_$1336", "typeString": "contract StakingRewards" } } }, "id": 1429, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "24792:104:0", "typeDescriptions": { "typeIdentifier": "t_contract$_StakingRewards_$1336", "typeString": "contract StakingRewards" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_StakingRewards_$1336", "typeString": "contract StakingRewards" } ], "id": 1420, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "24784:7:0", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 1430, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "24784:113:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "24762:135:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 1432, "nodeType": "ExpressionStatement", "src": "24762:135:0" }, { "expression": { "argumentTypes": null, "id": 1437, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1433, "name": "info", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1402, "src": "24907:4:0", "typeDescriptions": { "typeIdentifier": "t_struct$_StakingRewardsInfo_$1368_storage_ptr", "typeString": "struct StakingRewardsFactory.StakingRewardsInfo storage pointer" } }, "id": 1435, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "rewardAmount", "nodeType": "MemberAccess", "referencedDeclaration": 1367, "src": "24907:17:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 1436, "name": "rewardAmount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1394, "src": "24927:12:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "24907:32:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1438, "nodeType": "ExpressionStatement", "src": "24907:32:0" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1442, "name": "stakingToken", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1392, "src": "24968:12:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "argumentTypes": null, "id": 1439, "name": "stakingTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1363, "src": "24949:13:0", "typeDescriptions": { "typeIdentifier": "t_array$_t_address_$dyn_storage", "typeString": "address[] storage ref" } }, "id": 1441, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "push", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "24949:18:0", "typeDescriptions": { "typeIdentifier": "t_function_arraypush_nonpayable$_t_address_$returns$_t_uint256_$", "typeString": "function (address) returns (uint256)" } }, "id": 1443, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "24949:32:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1444, "nodeType": "ExpressionStatement", "src": "24949:32:0" } ] }, "documentation": "// permissioned functions", "id": 1446, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 1399, "modifierName": { "argumentTypes": null, "id": 1398, "name": "onlyOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 110, "src": "24548:9:0", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "24548:9:0" } ], "name": "deploy", "nodeType": "FunctionDefinition", "parameters": { "id": 1397, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1392, "name": "stakingToken", "nodeType": "VariableDeclaration", "scope": 1446, "src": "24475:20:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 1391, "name": "address", "nodeType": "ElementaryTypeName", "src": "24475:7:0", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1394, "name": "rewardAmount", "nodeType": "VariableDeclaration", "scope": 1446, "src": "24497:17:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1393, "name": "uint", "nodeType": "ElementaryTypeName", "src": "24497:4:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1396, "name": "rewardsDuration", "nodeType": "VariableDeclaration", "scope": 1446, "src": "24516:23:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1395, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "24516:7:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "24474:66:0" }, "returnParameters": { "id": 1400, "nodeType": "ParameterList", "parameters": [], "src": "24558:0:0" }, "scope": 1545, "src": "24459:529:0", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 1476, "nodeType": "Block", "src": "25123:241:0", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1453, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1450, "name": "stakingTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1363, "src": "25141:13:0", "typeDescriptions": { "typeIdentifier": "t_array$_t_address_$dyn_storage", "typeString": "address[] storage ref" } }, "id": 1451, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "25141:20:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 1452, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "25164:1:0", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "25141:24:0", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "5374616b696e6752657761726473466163746f72793a3a6e6f74696679526577617264416d6f756e74733a2063616c6c6564206265666f726520616e79206465706c6f7973", "id": 1454, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "25167:71:0", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_ae1f87e20c157d2878a2e48b377d209dfddfc6d5ec9b80ceecc5addd0ef6ffdb", "typeString": "literal_string \"StakingRewardsFactory::notifyRewardAmounts: called before any deploys\"" }, "value": "StakingRewardsFactory::notifyRewardAmounts: called before any deploys" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_ae1f87e20c157d2878a2e48b377d209dfddfc6d5ec9b80ceecc5addd0ef6ffdb", "typeString": "literal_string \"StakingRewardsFactory::notifyRewardAmounts: called before any deploys\"" } ], "id": 1449, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 1563, 1564 ], "referencedDeclaration": 1564, "src": "25133:7:0", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 1455, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "25133:106:0", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1456, "nodeType": "ExpressionStatement", "src": "25133:106:0" }, { "body": { "id": 1474, "nodeType": "Block", "src": "25297:61:0", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 1469, "name": "stakingTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1363, "src": "25330:13:0", "typeDescriptions": { "typeIdentifier": "t_array$_t_address_$dyn_storage", "typeString": "address[] storage ref" } }, "id": 1471, "indexExpression": { "argumentTypes": null, "id": 1470, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1458, "src": "25344:1:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "25330:16:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 1468, "name": "notifyRewardAmount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1544, "src": "25311:18:0", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 1472, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "25311:36:0", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1473, "nodeType": "ExpressionStatement", "src": "25311:36:0" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1464, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 1461, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1458, "src": "25266:1:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1462, "name": "stakingTokens", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1363, "src": "25270:13:0", "typeDescriptions": { "typeIdentifier": "t_array$_t_address_$dyn_storage", "typeString": "address[] storage ref" } }, "id": 1463, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "25270:20:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "25266:24:0", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1475, "initializationExpression": { "assignments": [ 1458 ], "declarations": [ { "constant": false, "id": 1458, "name": "i", "nodeType": "VariableDeclaration", "scope": 1475, "src": "25254:6:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1457, "name": "uint", "nodeType": "ElementaryTypeName", "src": "25254:4:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 1460, "initialValue": { "argumentTypes": null, "hexValue": "30", "id": 1459, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "25263:1:0", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "25254:10:0" }, "loopExpression": { "expression": { "argumentTypes": null, "id": 1466, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "++", "prefix": false, "src": "25292:3:0", "subExpression": { "argumentTypes": null, "id": 1465, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1458, "src": "25292:1:0", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1467, "nodeType": "ExpressionStatement", "src": "25292:3:0" }, "nodeType": "ForStatement", "src": "25249:109:0" } ] }, "documentation": "// permissionless functions", "id": 1477, "implemented": true, "kind": "function", "modifiers": [], "name": "notifyRewardAmounts", "nodeType": "FunctionDefinition", "parameters": { "id": 1447, "nodeType": "ParameterList", "parameters": [], "src": "25113:2:0" }, "returnParameters": { "id": 1448, "nodeType": "ParameterList", "parameters": [], "src": "25123:0:0" }, "scope": 1545, "src": "25085:279:0", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 1543, "nodeType": "Block", "src": "25591:736:0", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1486, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { 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