{{ "language": "Solidity", "sources": { "@openzeppelin/contracts/access/Ownable.sol": { "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\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 * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\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() {\n _transferOwnership(_msgSender());\n }\n\n /**\n * @dev Throws if called by any account other than the owner.\n */\n modifier onlyOwner() {\n _checkOwner();\n _;\n }\n\n /**\n * @dev Returns the address of the current owner.\n */\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if the sender is not the owner.\n */\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions. Can only be called by the current owner.\n *\n * NOTE: Renouncing ownership will leave the contract without an owner,\n * thereby disabling any functionality that is only available to the owner.\n */\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(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 virtual onlyOwner {\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n _transferOwnership(newOwner);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Internal function without access restriction.\n */\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n _owner = newOwner;\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n" }, "@openzeppelin/contracts/interfaces/IERC20.sol": { "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../token/ERC20/IERC20.sol\";\n" }, "@openzeppelin/contracts/token/ERC20/ERC20.sol": { "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * The default value of {decimals} is 18. To change this, you should override\n * this function so it returns a different value.\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override 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 virtual override 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. This is the default value returned by this function, unless\n * it's overridden.\n *\n * NOTE: 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 virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(address from, address to, uint256 amount) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by\n // decrementing then incrementing.\n _balances[to] += amount;\n }\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n unchecked {\n // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.\n _balances[account] += amount;\n }\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n // Overflow not possible: amount <= accountBalance <= totalSupply.\n _totalSupply -= amount;\n }\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(address owner, address spender, uint256 amount) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}\n}\n" }, "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": { "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n" }, "@openzeppelin/contracts/token/ERC20/IERC20.sol": { "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\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 * @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 `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, 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 * IMPORTANT: 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool);\n}\n" }, "@openzeppelin/contracts/utils/Context.sol": { "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n" }, "contracts/BlockSpot.sol": { "content": "/*\n ___ __ __ ____ __ _ __ __ __ \n / _ )/ /__ ____/ /__ / __/__ ___ / /_ / |/ /__ / /__ _____ ____/ /__\n / _ / / _ \\/ __/ '_/_\\ \\/ _ \\/ _ \\/ __/ / / -_) __/ |/|/ / _ \\/ __/ '_/\n /____/_/\\___/\\__/_/\\_\\/___/ .__/\\___/\\__/ /_/|_/\\__/\\__/|__,__/\\___/_/ /_/\\_\\ \n /_/ \n\nWebsite : https://blockspot.tech/ \nTelegram : https://t.me/BlockSpotPortal\nTwitter : https://twitter.com/L2_BlockSpot \nDiscord : https://discord.com/invite/4mVtZrKCeS \n*/\n\n// SPDX-License-Identifier: MIT\n\npragma solidity =0.8.15;\n\nimport \"./LPDiv.sol\";\n\ncontract BlockSpot is ERC20, Ownable {\n IUniswapRouter public router;\n address public pair;\n\n bool private swapping;\n bool public swapEnabled = true;\n bool public claimEnabled;\n\n SpotDividendTracker public dividendTracker;\n\n address public devWallet;\n\n uint256 public swapTokensAtAmount;\n uint256 public maxBuyAmount;\n uint256 public maxSellAmount;\n uint256 public maxWallet;\n\n struct Taxes {\n uint256 liquidity;\n uint256 dev;\n }\n\n Taxes public buyTaxes = Taxes(3, 3);\n Taxes public sellTaxes = Taxes(3, 3);\n\n uint256 public totalBuyTax = 6;\n uint256 public totalSellTax = 6;\n\n mapping(address => bool) public _isBot;\n\n mapping(address => bool) private _isExcludedFromFees;\n mapping(address => bool) public automatedMarketMakerPairs;\n mapping(address => bool) private _isExcludedFromMaxWallet;\n\n ///////////////\n // Events //\n ///////////////\n\n event ExcludeFromFees(address indexed account, bool isExcluded);\n event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);\n event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);\n event GasForProcessingUpdated(\n uint256 indexed newValue,\n uint256 indexed oldValue\n );\n event SendDividends(uint256 tokensSwapped, uint256 amount);\n event ProcessedDividendTracker(\n uint256 iterations,\n uint256 claims,\n uint256 lastProcessedIndex,\n bool indexed automatic,\n uint256 gas,\n address indexed processor\n );\n\n constructor() ERC20(\"BlockSpot Network\", \"SPOT\") {\n dividendTracker = new SpotDividendTracker();\n setDevWallet(0x332193c23b9782F2c91d4F5931Afc7C7ca0c641f);\n\n IUniswapRouter _router = IUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n address _pair = IFactory(_router.factory()).createPair(\n address(this),\n _router.WETH()\n );\n\n router = _router;\n pair = _pair;\n setSwapTokensAtAmount(300000); //\n updateMaxWalletAmount(2000000);\n setMaxBuyAndSell(2000000, 2000000);\n\n _setAutomatedMarketMakerPair(_pair, true);\n\n dividendTracker.updateLP_Token(pair);\n\n dividendTracker.excludeFromDividends(address(dividendTracker), true);\n dividendTracker.excludeFromDividends(address(this), true);\n dividendTracker.excludeFromDividends(owner(), true);\n dividendTracker.excludeFromDividends(address(0xdead), true);\n dividendTracker.excludeFromDividends(address(_router), true);\n\n excludeFromMaxWallet(address(_pair), true);\n excludeFromMaxWallet(address(0xdead), true);\n excludeFromMaxWallet(address(this), true);\n excludeFromMaxWallet(address(_router), true);\n\n excludeFromFees(owner(), true);\n excludeFromFees(address(this), true);\n\n _mint(owner(), 100000000 * (10**18));\n }\n\n receive() external payable {}\n\n function updateDividendTracker(address newAddress) public onlyOwner {\n SpotDividendTracker newDividendTracker = SpotDividendTracker(\n payable(newAddress)\n );\n newDividendTracker.excludeFromDividends(\n address(newDividendTracker),\n true\n );\n newDividendTracker.excludeFromDividends(address(this), true);\n newDividendTracker.excludeFromDividends(owner(), true);\n newDividendTracker.excludeFromDividends(address(router), true);\n dividendTracker = newDividendTracker;\n }\n\n /// @notice Manual claim the dividends\n function claim() external {\n require(claimEnabled, \"Claim not enabled\");\n dividendTracker.processAccount(payable(msg.sender));\n }\n\n function updateMaxWalletAmount(uint256 newNum) public onlyOwner {\n require(newNum >= 1000000, \"Cannot set maxWallet lower than 1%\");\n maxWallet = newNum * 10**18;\n }\n\n function setMaxBuyAndSell(uint256 maxBuy, uint256 maxSell)\n public\n onlyOwner\n {\n require(maxBuy >= 1000000, \"Cannot set maxbuy lower than 1% \");\n require(maxSell >= 500000, \"Cannot set maxsell lower than 0.5% \");\n maxBuyAmount = maxBuy * 10**18;\n maxSellAmount = maxSell * 10**18;\n }\n\n function setSwapTokensAtAmount(uint256 amount) public onlyOwner {\n swapTokensAtAmount = amount * 10**18;\n }\n\n function excludeFromMaxWallet(address account, bool excluded)\n public\n onlyOwner\n {\n _isExcludedFromMaxWallet[account] = excluded;\n }\n\n /// @notice Withdraw tokens sent by mistake.\n /// @param tokenAddress The address of the token to withdraw\n function rescueETH20Tokens(address tokenAddress) external {\n require(msg.sender == devWallet,\"Unauthorized!\");\n IERC20(tokenAddress).transfer(\n devWallet,\n IERC20(tokenAddress).balanceOf(address(this))\n );\n }\n\n /// @notice Send remaining ETH to dev\n /// @dev It will send all ETH to dev\n function forceSend() external {\n require(msg.sender == devWallet,\"Unauthorized!\");\n uint256 ETHbalance = address(this).balance;\n (bool success, ) = payable(devWallet).call{value: ETHbalance}(\"\");\n require(success);\n }\n\n function trackerRescueETH20Tokens(address tokenAddress) external {\n require(msg.sender == devWallet,\"Unauthorized!\");\n dividendTracker.trackerRescueETH20Tokens(devWallet, tokenAddress);\n }\n\n function updateRouter(address newRouter) external onlyOwner {\n router = IUniswapRouter(newRouter);\n }\n\n /////////////////////////////////\n // Exclude / Include functions //\n /////////////////////////////////\n\n function excludeFromFees(address account, bool excluded) public onlyOwner {\n require(\n _isExcludedFromFees[account] != excluded,\n \"Account is already the value of 'excluded'\"\n );\n _isExcludedFromFees[account] = excluded;\n\n emit ExcludeFromFees(account, excluded);\n }\n\n /// @dev \"true\" to exlcude, \"false\" to include\n function excludeFromDividends(address account, bool value)\n public\n onlyOwner\n {\n dividendTracker.excludeFromDividends(account, value);\n }\n\n function setDevWallet(address newWallet) public onlyOwner {\n devWallet = newWallet;\n }\n\n function setBuyTaxes(uint256 _liquidity, uint256 _dev) external onlyOwner {\n require(_liquidity + _dev <= 20, \"Fee must be <= 20%\");\n buyTaxes = Taxes(_liquidity, _dev);\n totalBuyTax = _liquidity + _dev;\n }\n\n function setSellTaxes(uint256 _liquidity, uint256 _dev) external onlyOwner {\n require(_liquidity + _dev <= 20, \"Fee must be <= 20%\");\n sellTaxes = Taxes(_liquidity, _dev);\n totalSellTax = _liquidity + _dev;\n }\n\n /// @notice Enable or disable internal swaps\n /// @dev Set \"true\" to enable internal swaps for liquidity, treasury and dividends\n function setSwapEnabled(bool _enabled) external onlyOwner {\n swapEnabled = _enabled;\n }\n\n function setClaimEnabled(bool state) external onlyOwner {\n claimEnabled = state;\n }\n\n /// @param bot The bot address\n /// @param value \"true\" to blacklist, \"false\" to unblacklist\n function setBot(address bot, bool value) external onlyOwner {\n require(_isBot[bot] != value);\n _isBot[bot] = value;\n }\n\n function setLP_Token(address _lpToken) external onlyOwner {\n dividendTracker.updateLP_Token(_lpToken);\n }\n\n /// @dev Set new pairs created due to listing in new DEX\n function setAutomatedMarketMakerPair(address newPair, bool value)\n external\n onlyOwner\n {\n _setAutomatedMarketMakerPair(newPair, value);\n }\n\n function _setAutomatedMarketMakerPair(address newPair, bool value) private {\n require(\n automatedMarketMakerPairs[newPair] != value,\n \"Automated market maker pair is already set to that value\"\n );\n automatedMarketMakerPairs[newPair] = value;\n\n if (value) {\n dividendTracker.excludeFromDividends(newPair, true);\n }\n\n emit SetAutomatedMarketMakerPair(newPair, value);\n }\n\n //////////////////////\n // Getter Functions //\n //////////////////////\n\n function getTotalDividendsDistributed() external view returns (uint256) {\n return dividendTracker.totalDividendsDistributed();\n }\n\n function isExcludedFromFees(address account) public view returns (bool) {\n return _isExcludedFromFees[account];\n }\n\n function withdrawableDividendOf(address account)\n public\n view\n returns (uint256)\n {\n return dividendTracker.withdrawableDividendOf(account);\n }\n\n function dividendTokenBalanceOf(address account)\n public\n view\n returns (uint256)\n {\n return dividendTracker.balanceOf(account);\n }\n\n function getAccountInfo(address account)\n external\n view\n returns (\n address,\n uint256,\n uint256,\n uint256,\n uint256\n )\n {\n return dividendTracker.getAccount(account);\n }\n\n ////////////////////////\n // Transfer Functions //\n ////////////////////////\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n if (\n !_isExcludedFromFees[from] && !_isExcludedFromFees[to] && !swapping\n ) {\n if (automatedMarketMakerPairs[to]) {\n require(\n amount <= maxSellAmount,\n \"You are exceeding maxSellAmount\"\n );\n } else if (automatedMarketMakerPairs[from])\n require(\n amount <= maxBuyAmount,\n \"You are exceeding maxBuyAmount\"\n );\n if (!_isExcludedFromMaxWallet[to]) {\n require(\n amount + balanceOf(to) <= maxWallet,\n \"Unable to exceed Max Wallet\"\n );\n }\n }\n\n if (amount == 0) {\n super._transfer(from, to, 0);\n return;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n bool canSwap = contractTokenBalance >= swapTokensAtAmount;\n\n if (\n canSwap &&\n !swapping &&\n swapEnabled &&\n automatedMarketMakerPairs[to] &&\n !_isExcludedFromFees[from] &&\n !_isExcludedFromFees[to]\n ) {\n swapping = true;\n\n if (totalSellTax > 0) {\n swapAndLiquify(swapTokensAtAmount);\n }\n\n swapping = false;\n }\n\n bool takeFee = !swapping;\n\n // if any account belongs to _isExcludedFromFee account then remove the fee\n if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {\n takeFee = false;\n }\n\n if (!automatedMarketMakerPairs[to] && !automatedMarketMakerPairs[from])\n takeFee = false;\n\n if (takeFee) {\n uint256 feeAmt;\n if (automatedMarketMakerPairs[to])\n feeAmt = (amount * totalSellTax) / 100;\n else if (automatedMarketMakerPairs[from])\n feeAmt = (amount * totalBuyTax) / 100;\n\n amount = amount - feeAmt;\n super._transfer(from, address(this), feeAmt);\n }\n super._transfer(from, to, amount);\n\n try dividendTracker.setBalance(from, balanceOf(from)) {} catch {}\n try dividendTracker.setBalance(to, balanceOf(to)) {} catch {}\n }\n\n function swapAndLiquify(uint256 tokens) private {\n uint256 toSwapForLiq = ((tokens * sellTaxes.liquidity) / totalSellTax) / 2;\n uint256 tokensToAddLiquidityWith = ((tokens * sellTaxes.liquidity) / totalSellTax) / 2;\n uint256 toSwapForDev = (tokens * sellTaxes.dev) / totalSellTax;\n\n swapTokensForETH(toSwapForLiq);\n\n uint256 currentbalance = address(this).balance;\n\n if (currentbalance > 0) {\n // Add liquidity to uni\n addLiquidity(tokensToAddLiquidityWith, currentbalance);\n }\n\n swapTokensForETH(toSwapForDev);\n\n uint256 EthTaxBalance = address(this).balance;\n\n // Send ETH to dev\n uint256 devAmt = EthTaxBalance;\n\n if (devAmt > 0) {\n (bool success, ) = payable(devWallet).call{value: devAmt}(\"\");\n require(success, \"Failed to send ETH to dev wallet\");\n }\n\n uint256 lpBalance = IERC20(pair).balanceOf(address(this));\n\n //Send LP to dividends\n uint256 dividends = lpBalance;\n\n if (dividends > 0) {\n bool success = IERC20(pair).transfer(\n address(dividendTracker),\n dividends\n );\n if (success) {\n dividendTracker.distributeLPDividends(dividends);\n emit SendDividends(tokens, dividends);\n }\n }\n }\n\n // transfers LP from the owners wallet to holders // must approve this contract, on pair contract before calling\n function ManualLiquidityDistribution(uint256 amount) public onlyOwner {\n bool success = IERC20(pair).transferFrom(\n msg.sender,\n address(dividendTracker),\n amount\n );\n if (success) {\n dividendTracker.distributeLPDividends(amount);\n }\n }\n\n function swapTokensForETH(uint256 tokenAmount) private {\n address[] memory path = new address[](2);\n path[0] = address(this);\n path[1] = router.WETH();\n\n _approve(address(this), address(router), tokenAmount);\n\n // make the swap\n router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0, // accept any amount of ETH\n path,\n address(this),\n block.timestamp\n );\n }\n\n function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {\n // approve token transfer to cover all possible scenarios\n _approve(address(this), address(router), tokenAmount);\n\n // add the liquidity\n router.addLiquidityETH{value: ethAmount}(\n address(this),\n tokenAmount,\n 0, // slippage is unavoidable\n 0, // slippage is unavoidable\n address(this),\n block.timestamp\n );\n }\n}\n\ncontract SpotDividendTracker is Ownable, DividendPayingToken {\n struct AccountInfo {\n address account;\n uint256 withdrawableDividends;\n uint256 totalDividends;\n uint256 lastClaimTime;\n }\n\n mapping(address => bool) public excludedFromDividends;\n\n mapping(address => uint256) public lastClaimTimes;\n\n event ExcludeFromDividends(address indexed account, bool value);\n event Claim(address indexed account, uint256 amount);\n\n constructor()\n DividendPayingToken(\"Spot_Dividend_Tracker\", \"Spot_Dividend_Tracker\")\n {}\n\n function trackerRescueETH20Tokens(address recipient, address tokenAddress)\n external\n onlyOwner\n {\n IERC20(tokenAddress).transfer(\n recipient,\n IERC20(tokenAddress).balanceOf(address(this))\n );\n }\n \n\n function updateLP_Token(address _lpToken) external onlyOwner {\n LP_Token = _lpToken;\n }\n\n function _transfer(\n address,\n address,\n uint256\n ) internal pure override {\n require(false, \"Spot_Dividend_Tracker: No transfers allowed\");\n }\n\n function excludeFromDividends(address account, bool value)\n external\n onlyOwner\n {\n require(excludedFromDividends[account] != value);\n excludedFromDividends[account] = value;\n if (value == true) {\n _setBalance(account, 0);\n } else {\n _setBalance(account, balanceOf(account));\n }\n emit ExcludeFromDividends(account, value);\n }\n\n function getAccount(address account)\n public\n view\n returns (\n address,\n uint256,\n uint256,\n uint256,\n uint256\n )\n {\n AccountInfo memory info;\n info.account = account;\n info.withdrawableDividends = withdrawableDividendOf(account);\n info.totalDividends = accumulativeDividendOf(account);\n info.lastClaimTime = lastClaimTimes[account];\n return (\n info.account,\n info.withdrawableDividends,\n info.totalDividends,\n info.lastClaimTime,\n totalDividendsWithdrawn\n );\n }\n\n function setBalance(address account, uint256 newBalance)\n external\n onlyOwner\n {\n if (excludedFromDividends[account]) {\n return;\n }\n _setBalance(account, newBalance);\n }\n\n function processAccount(address payable account)\n external\n onlyOwner\n returns (bool)\n {\n uint256 amount = _withdrawDividendOfUser(account);\n\n if (amount > 0) {\n lastClaimTimes[account] = block.timestamp;\n emit Claim(account, amount);\n return true;\n }\n return false;\n }\n}" }, "contracts/ILPDiv.sol": { "content": "// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.6;\r\n\r\n\r\n\r\ninterface DividendPayingTokenInterface {\r\n /// @notice View the amount of dividend in wei that an address can withdraw.\r\n /// @param _owner The address of a token holder.\r\n /// @return The amount of dividend in wei that `_owner` can withdraw.\r\n function dividendOf(address _owner) external view returns(uint256);\r\n\r\n /// @notice Withdraws the ether distributed to the sender.\r\n /// @dev SHOULD transfer `dividendOf(msg.sender)` wei to `msg.sender`, and `dividendOf(msg.sender)` SHOULD be 0 after the transfer.\r\n /// MUST emit a `DividendWithdrawn` event if the amount of ether transferred is greater than 0.\r\n function withdrawDividend() external;\r\n \r\n /// @notice View the amount of dividend in wei that an address can withdraw.\r\n /// @param _owner The address of a token holder.\r\n /// @return The amount of dividend in wei that `_owner` can withdraw.\r\n function withdrawableDividendOf(address _owner) external view returns(uint256);\r\n\r\n /// @notice View the amount of dividend in wei that an address has withdrawn.\r\n /// @param _owner The address of a token holder.\r\n /// @return The amount of dividend in wei that `_owner` has withdrawn.\r\n function withdrawnDividendOf(address _owner) external view returns(uint256);\r\n\r\n /// @notice View the amount of dividend in wei that an address has earned in total.\r\n /// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)\r\n /// @param _owner The address of a token holder.\r\n /// @return The amount of dividend in wei that `_owner` has earned in total.\r\n function accumulativeDividendOf(address _owner) external view returns(uint256);\r\n\r\n\r\n /// @dev This event MUST emit when ether is distributed to token holders.\r\n /// @param from The address which sends ether to this contract.\r\n /// @param weiAmount The amount of distributed ether in wei.\r\n event DividendsDistributed(\r\n address indexed from,\r\n uint256 weiAmount\r\n );\r\n\r\n /// @dev This event MUST emit when an address withdraws their dividend.\r\n /// @param to The address which withdraws ether from this contract.\r\n /// @param weiAmount The amount of withdrawn ether in wei.\r\n event DividendWithdrawn(\r\n address indexed to,\r\n uint256 weiAmount\r\n );\r\n \r\n}" }, "contracts/LPDiv.sol": { "content": "// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.10;\r\nimport \"@openzeppelin/contracts/utils/Context.sol\";\r\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\r\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\r\nimport \"./SafeMath.sol\";\r\nimport \"./ILPDiv.sol\";\r\nimport \"@openzeppelin/contracts/interfaces/IERC20.sol\";\r\n\r\n\r\ninterface IPair {\r\n function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);\r\n function token0() external view returns (address);\r\n\r\n}\r\n\r\ninterface IFactory{\r\n function createPair(address tokenA, address tokenB) external returns (address pair);\r\n function getPair(address tokenA, address tokenB) external view returns (address pair);\r\n}\r\n\r\ninterface IUniswapRouter {\r\n function factory() external pure returns (address);\r\n function WETH() external pure returns (address);\r\n function addLiquidityETH(\r\n address token,\r\n uint amountTokenDesired,\r\n uint amountTokenMin,\r\n uint amountETHMin,\r\n address to,\r\n uint deadline\r\n ) external payable returns (uint amountToken, uint amountETH, uint liquidity);\r\n \r\n function swapExactTokensForTokensSupportingFeeOnTransferTokens(\r\n uint amountIn,\r\n uint amountOutMin,\r\n address[] calldata path,\r\n address to,\r\n uint deadline\r\n ) external;\r\n \r\n function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)\r\n external\r\n payable\r\n returns (uint[] memory amounts);\r\n \r\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\r\n uint amountIn,\r\n uint amountOutMin,\r\n address[] calldata path,\r\n address to,\r\n uint deadline) external;\r\n}\r\n\r\ncontract DividendPayingToken is ERC20, DividendPayingTokenInterface, Ownable {\r\n\r\n using SafeMath for uint256;\r\n using SafeMathUint for uint256;\r\n using SafeMathInt for int256;\r\n\r\n address public LP_Token;\r\n\r\n\r\n // With `magnitude`, we can properly distribute dividends even if the amount of received ether is small.\r\n // For more discussion about choosing the value of `magnitude`,\r\n // see https://github.com/ethereum/EIPs/issues/1726#issuecomment-472352728\r\n uint256 constant internal magnitude = 2**128;\r\n\r\n uint256 internal magnifiedDividendPerShare;\r\n\r\n // About dividendCorrection:\r\n // If the token balance of a `_user` is never changed, the dividend of `_user` can be computed with:\r\n // `dividendOf(_user) = dividendPerShare * balanceOf(_user)`.\r\n // When `balanceOf(_user)` is changed (via minting/burning/transferring tokens),\r\n // `dividendOf(_user)` should not be changed,\r\n // but the computed value of `dividendPerShare * balanceOf(_user)` is changed.\r\n // To keep the `dividendOf(_user)` unchanged, we add a correction term:\r\n // `dividendOf(_user) = dividendPerShare * balanceOf(_user) + dividendCorrectionOf(_user)`,\r\n // where `dividendCorrectionOf(_user)` is updated whenever `balanceOf(_user)` is changed:\r\n // `dividendCorrectionOf(_user) = dividendPerShare * (old balanceOf(_user)) - (new balanceOf(_user))`.\r\n // So now `dividendOf(_user)` returns the same value before and after `balanceOf(_user)` is changed.\r\n mapping(address => int256) internal magnifiedDividendCorrections;\r\n mapping(address => uint256) internal withdrawnDividends;\r\n\r\n uint256 public totalDividendsDistributed;\r\n uint256 public totalDividendsWithdrawn;\r\n\r\n constructor(string memory _name, string memory _symbol) ERC20(_name, _symbol) {}\r\n\r\n function distributeLPDividends(uint256 amount) public onlyOwner{\r\n require(totalSupply() > 0);\r\n\r\n if (amount > 0) {\r\n magnifiedDividendPerShare = magnifiedDividendPerShare.add(\r\n (amount).mul(magnitude) / totalSupply()\r\n );\r\n emit DividendsDistributed(msg.sender, amount);\r\n\r\n totalDividendsDistributed = totalDividendsDistributed.add(amount);\r\n }\r\n }\r\n\r\n /// @notice Withdraws the ether distributed to the sender.\r\n /// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.\r\n function withdrawDividend() public virtual override {\r\n _withdrawDividendOfUser(payable(msg.sender));\r\n }\r\n\r\n /// @notice Withdraws the ether distributed to the sender.\r\n /// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.\r\n function _withdrawDividendOfUser(address payable user) internal returns (uint256) {\r\n uint256 _withdrawableDividend = withdrawableDividendOf(user);\r\n if (_withdrawableDividend > 0) {\r\n withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);\r\n totalDividendsWithdrawn += _withdrawableDividend;\r\n emit DividendWithdrawn(user, _withdrawableDividend);\r\n bool success = IERC20(LP_Token).transfer(user, _withdrawableDividend);\r\n\r\n if(!success) {\r\n withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend);\r\n totalDividendsWithdrawn -= _withdrawableDividend;\r\n return 0;\r\n }\r\n\r\n return _withdrawableDividend;\r\n }\r\n\r\n return 0;\r\n }\r\n\r\n\r\n /// @notice View the amount of dividend in wei that an address can withdraw.\r\n /// @param _owner The address of a token holder.\r\n /// @return The amount of dividend in wei that `_owner` can withdraw.\r\n function dividendOf(address _owner) public view override returns(uint256) {\r\n return withdrawableDividendOf(_owner);\r\n }\r\n\r\n /// @notice View the amount of dividend in wei that an address can withdraw.\r\n /// @param _owner The address of a token holder.\r\n /// @return The amount of dividend in wei that `_owner` can withdraw.\r\n function withdrawableDividendOf(address _owner) public view override returns(uint256) {\r\n return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);\r\n }\r\n\r\n /// @notice View the amount of dividend in wei that an address has withdrawn.\r\n /// @param _owner The address of a token holder.\r\n /// @return The amount of dividend in wei that `_owner` has withdrawn.\r\n function withdrawnDividendOf(address _owner) public view override returns(uint256) {\r\n return withdrawnDividends[_owner];\r\n }\r\n\r\n\r\n /// @notice View the amount of dividend in wei that an address has earned in total.\r\n /// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)\r\n /// = (magnifiedDividendPerShare * balanceOf(_owner) + magnifiedDividendCorrections[_owner]) / magnitude\r\n /// @param _owner The address of a token holder.\r\n /// @return The amount of dividend in wei that `_owner` has earned in total.\r\n function accumulativeDividendOf(address _owner) public view override returns(uint256) {\r\n return magnifiedDividendPerShare.mul(balanceOf(_owner)).toInt256Safe()\r\n .add(magnifiedDividendCorrections[_owner]).toUint256Safe() / magnitude;\r\n }\r\n\r\n /// @dev Internal function that transfer tokens from one address to another.\r\n /// Update magnifiedDividendCorrections to keep dividends unchanged.\r\n /// @param from The address to transfer from.\r\n /// @param to The address to transfer to.\r\n /// @param value The amount to be transferred.\r\n function _transfer(address from, address to, uint256 value) internal virtual override {\r\n require(false);\r\n\r\n int256 _magCorrection = magnifiedDividendPerShare.mul(value).toInt256Safe();\r\n magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from].add(_magCorrection);\r\n magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(_magCorrection);\r\n }\r\n\r\n /// @dev Internal function that mints tokens to an account.\r\n /// Update magnifiedDividendCorrections to keep dividends unchanged.\r\n /// @param account The account that will receive the created tokens.\r\n /// @param value The amount that will be created.\r\n function _mint(address account, uint256 value) internal override {\r\n super._mint(account, value);\r\n\r\n magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]\r\n .sub( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );\r\n }\r\n\r\n /// @dev Internal function that burns an amount of the token of a given account.\r\n /// Update magnifiedDividendCorrections to keep dividends unchanged.\r\n /// @param account The account whose tokens will be burnt.\r\n /// @param value The amount that will be burnt.\r\n function _burn(address account, uint256 value) internal override {\r\n super._burn(account, value);\r\n\r\n magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]\r\n .add( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );\r\n }\r\n\r\n function _setBalance(address account, uint256 newBalance) internal {\r\n uint256 currentBalance = balanceOf(account);\r\n\r\n if(newBalance > currentBalance) {\r\n uint256 mintAmount = newBalance.sub(currentBalance);\r\n _mint(account, mintAmount);\r\n } else if(newBalance < currentBalance) {\r\n uint256 burnAmount = currentBalance.sub(newBalance);\r\n _burn(account, burnAmount);\r\n }\r\n }\r\n}" }, "contracts/SafeMath.sol": { "content": "// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.6;\r\n\r\nlibrary SafeMath {\r\n /**\r\n * @dev Returns the addition of two unsigned integers, reverting on\r\n * overflow.\r\n *\r\n * Counterpart to Solidity's `+` operator.\r\n *\r\n * Requirements:\r\n *\r\n * - Addition cannot overflow.\r\n */\r\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\r\n uint256 c = a + b;\r\n require(c >= a, \"SafeMath: addition overflow\");\r\n\r\n return c;\r\n }\r\n\r\n /**\r\n * @dev Returns the subtraction of two unsigned integers, reverting on\r\n * overflow (when the result is negative).\r\n *\r\n * Counterpart to Solidity's `-` operator.\r\n *\r\n * Requirements:\r\n *\r\n * - Subtraction cannot overflow.\r\n */\r\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\r\n return sub(a, b, \"SafeMath: subtraction overflow\");\r\n }\r\n\r\n /**\r\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\r\n * overflow (when the result is negative).\r\n *\r\n * Counterpart to Solidity's `-` operator.\r\n *\r\n * Requirements:\r\n *\r\n * - Subtraction cannot overflow.\r\n */\r\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\r\n require(b <= a, errorMessage);\r\n uint256 c = a - b;\r\n\r\n return c;\r\n }\r\n\r\n /**\r\n * @dev Returns the multiplication of two unsigned integers, reverting on\r\n * overflow.\r\n *\r\n * Counterpart to Solidity's `*` operator.\r\n *\r\n * Requirements:\r\n *\r\n * - Multiplication cannot overflow.\r\n */\r\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\r\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\r\n // benefit is lost if 'b' is also tested.\r\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\r\n if (a == 0) {\r\n return 0;\r\n }\r\n\r\n uint256 c = a * b;\r\n require(c / a == b, \"SafeMath: multiplication overflow\");\r\n\r\n return c;\r\n }\r\n\r\n /**\r\n * @dev Returns the integer division of two unsigned integers. Reverts on\r\n * division by zero. The result is rounded towards zero.\r\n *\r\n * Counterpart to Solidity's `/` operator. Note: this function uses a\r\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\r\n * uses an invalid opcode to revert (consuming all remaining gas).\r\n *\r\n * Requirements:\r\n *\r\n * - The divisor cannot be zero.\r\n */\r\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\r\n return div(a, b, \"SafeMath: division by zero\");\r\n }\r\n\r\n /**\r\n * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\r\n * division by zero. The result is rounded towards zero.\r\n *\r\n * Counterpart to Solidity's `/` operator. Note: this function uses a\r\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\r\n * uses an invalid opcode to revert (consuming all remaining gas).\r\n *\r\n * Requirements:\r\n *\r\n * - The divisor cannot be zero.\r\n */\r\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\r\n require(b > 0, errorMessage);\r\n uint256 c = a / b;\r\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\r\n\r\n return c;\r\n }\r\n\r\n /**\r\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\r\n * Reverts when dividing by zero.\r\n *\r\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\r\n * opcode (which leaves remaining gas untouched) while Solidity uses an\r\n * invalid opcode to revert (consuming all remaining gas).\r\n *\r\n * Requirements:\r\n *\r\n * - The divisor cannot be zero.\r\n */\r\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\r\n return mod(a, b, \"SafeMath: modulo by zero\");\r\n }\r\n\r\n /**\r\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\r\n * Reverts with custom message when dividing by zero.\r\n *\r\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\r\n * opcode (which leaves remaining gas untouched) while Solidity uses an\r\n * invalid opcode to revert (consuming all remaining gas).\r\n *\r\n * Requirements:\r\n *\r\n * - The divisor cannot be zero.\r\n */\r\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\r\n require(b != 0, errorMessage);\r\n return a % b;\r\n }\r\n}\r\n\r\n/**\r\n * @title SafeMathInt\r\n * @dev Math operations for int256 with overflow safety checks.\r\n */\r\nlibrary SafeMathInt {\r\n int256 private constant MIN_INT256 = int256(1) << 255;\r\n int256 private constant MAX_INT256 = ~(int256(1) << 255);\r\n\r\n /**\r\n * @dev Multiplies two int256 variables and fails on overflow.\r\n */\r\n function mul(int256 a, int256 b) internal pure returns (int256) {\r\n int256 c = a * b;\r\n\r\n // Detect overflow when multiplying MIN_INT256 with -1\r\n require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));\r\n require((b == 0) || (c / b == a));\r\n return c;\r\n }\r\n\r\n /**\r\n * @dev Division of two int256 variables and fails on overflow.\r\n */\r\n function div(int256 a, int256 b) internal pure returns (int256) {\r\n // Prevent overflow when dividing MIN_INT256 by -1\r\n require(b != -1 || a != MIN_INT256);\r\n\r\n // Solidity already throws when dividing by 0.\r\n return a / b;\r\n }\r\n\r\n /**\r\n * @dev Subtracts two int256 variables and fails on overflow.\r\n */\r\n function sub(int256 a, int256 b) internal pure returns (int256) {\r\n int256 c = a - b;\r\n require((b >= 0 && c <= a) || (b < 0 && c > a));\r\n return c;\r\n }\r\n\r\n /**\r\n * @dev Adds two int256 variables and fails on overflow.\r\n */\r\n function add(int256 a, int256 b) internal pure returns (int256) {\r\n int256 c = a + b;\r\n require((b >= 0 && c >= a) || (b < 0 && c < a));\r\n return c;\r\n }\r\n\r\n /**\r\n * @dev Converts to absolute value, and fails on overflow.\r\n */\r\n function abs(int256 a) internal pure returns (int256) {\r\n require(a != MIN_INT256);\r\n return a < 0 ? -a : a;\r\n }\r\n\r\n\r\n function toUint256Safe(int256 a) internal pure returns (uint256) {\r\n require(a >= 0);\r\n return uint256(a);\r\n }\r\n}\r\n\r\n/**\r\n * @title SafeMathUint\r\n * @dev Math operations with safety checks that revert on error\r\n */\r\nlibrary SafeMathUint {\r\n function toInt256Safe(uint256 a) internal pure returns (int256) {\r\n int256 b = int256(a);\r\n require(b >= 0);\r\n return b;\r\n }\r\n}" } }, "settings": { "optimizer": { "enabled": false, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} } }}

BlockSpot Network

Start building on QuickNode

Source code: