ERC-20
MEME
Overview
Max Total Supply
100,000,000,000 DORK
Holders
6,221 (0.00%)
Market
Price
$0.00 @ 0.000000 ETH (+1.74%)
Onchain Market Cap
$330,000.00
Circulating Supply Market Cap
$0.00
Other Info
Token Contract (WITH 18 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
DORK
Compiler Version
v0.8.22+commit.4fc1097e
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "../libraries/AntiWhaleToken.sol"; import "../libraries/ERC20Base.sol"; import "../libraries/ERC20Burnable.sol"; import "../libraries/TaxableToken.sol"; /** * @dev ERC20Token implementation with Burn, AntiWhale, Tax capabilities */ contract DORK is ERC20Base, AntiWhaleToken, ERC20Burnable, Ownable, TaxableToken { uint256 public constant initialSupply_ = 100_000_000_000 * 1 ether; address private constant swapRouter_ = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; address[] private collectors_ = [0x17b1F15F038bF0A1F872fa64345204210Cd1a5e5]; uint256[] private shares_ = [10000]; mapping(address => bool) private _excludedFromAntiWhale; event ExcludedFromAntiWhale(address indexed account, bool excluded); constructor() ERC20Base( "DORK", "DORK", 18) AntiWhaleToken(initialSupply_ / 100) // 1% of supply TaxableToken( true, initialSupply_ / 10000, swapRouter_, FeeConfiguration({ feesInToken: false, buyFees: 200, //2% sellFees: 200, //2% transferFees: 0, burnFeeRatio: 0, liquidityFeeRatio: 0, collectorsFeeRatio: 10000 }) ) TaxDistributor(collectors_, shares_) { _excludedFromAntiWhale[_msgSender()] = true; _excludedFromAntiWhale[swapPair] = true; _excludedFromAntiWhale[BURN_ADDRESS] = true; _mint(_msgSender(), initialSupply_); } /** * @dev Update the max token allowed per wallet. * only callable by `owner()` */ function setMaxTokenPerWallet(uint256 amount) external onlyOwner { _setMaxTokenPerWallet(amount); } /** * @dev Update the pair token. * only callable by `owner()` */ function setPairToken(address token) external onlyOwner { swapPair = token; } /** * @dev returns true if address is excluded from anti whale */ function isExcludedFromAntiWhale(address account) public view override returns (bool) { return _excludedFromAntiWhale[account]; } /** * @dev Include/Exclude an address from anti whale * only callable by `owner()` */ function setIsExcludedFromAntiWhale(address account, bool excluded) external onlyOwner { _excludedFromAntiWhale[account] = excluded; emit ExcludedFromAntiWhale(account, excluded); } /** * @dev Destroys `amount` tokens from the caller. * only callable by `owner()` */ function burn(uint256 amount) external override onlyOwner { _burn(_msgSender(), amount); } /** * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * only callable by `owner()` */ function burnFrom(address account, uint256 amount) external override onlyOwner { _burnFrom(account, amount); } function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual override(ERC20, AntiWhaleToken) { super._beforeTokenTransfer(from, to, amount); } /** * @dev Enable/Disable autoProcessFees on transfer * only callable by `owner()` */ function setAutoprocessFees(bool autoProcess) external override onlyOwner { require(autoProcessFees != autoProcess, "Already set"); autoProcessFees = autoProcess; } /** * @dev add a fee collector * only callable by `owner()` */ function addFeeCollector(address account, uint256 share) external override onlyOwner { _addFeeCollector(account, share); } /** * @dev add/remove a LP * only callable by `owner()` */ function setIsLpPool(address pairAddress, bool isLp) external override onlyOwner { _setIsLpPool(pairAddress, isLp); } /** * @dev add/remove an address to the tax exclusion list * only callable by `owner()` */ function setIsExcludedFromFees(address account, bool excluded) external override onlyOwner { _setIsExcludedFromFees(account, excluded); } /** * @dev manually distribute fees to collectors * only callable by `owner()` */ function distributeFees(uint256 amount, bool inToken) external override onlyOwner { if (inToken) { require(balanceOf(address(this)) >= amount, "Not enough balance"); } else { require(address(this).balance >= amount, "Not enough balance"); } _distributeFees(amount, inToken); } /** * @dev process fees * only callable by `owner()` */ function processFees(uint256 amount, uint256 minAmountOut) external override onlyOwner { require(amount <= balanceOf(address(this)), "Amount too high"); _processFees(amount, minAmountOut); } /** * @dev remove a fee collector * only callable by `owner()` */ function removeFeeCollector(address account) external override onlyOwner { _removeFeeCollector(account); } /** * @dev set the liquidity owner * only callable by `owner()` */ function setLiquidityOwner(address newOwner) external override onlyOwner { liquidityOwner = newOwner; } /** * @dev set the number of tokens to swap * only callable by `owner()` */ function setNumTokensToSwap(uint256 amount) external override onlyOwner { numTokensToSwap = amount; } /** * @dev update a fee collector share * only callable by `owner()` */ function updateFeeCollectorShare(address account, uint256 share) external override onlyOwner { _updateFeeCollectorShare(account, share); } /** * @dev update the fee configurations * only callable by `owner()` */ function setFeeConfiguration(FeeConfiguration calldata configuration) external override onlyOwner { _setFeeConfiguration(configuration); } /** * @dev update the swap router * only callable by `owner()` */ function setSwapRouter(address newRouter) external override onlyOwner { _setSwapRouter(newRouter); } function _transfer(address from, address to, uint256 amount) internal override(ERC20, TaxableToken) { super._transfer(from, to, amount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol"; import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol"; import "./ERC20Base.sol"; import "./TaxDistributor.sol"; /* * TaxableToken: Add a tax on buy, sell or transfer */ abstract contract TaxableToken is ERC20Base, TaxDistributor { struct FeeConfiguration { bool feesInToken; // if set to true, collectors will get tokens, if false collector the fee will be swapped for the native currency uint16 buyFees; // fees applied during buys, from 0 to 2000 (ie, 100 = 1%) uint16 sellFees; // fees applied during sells, from 0 to 2000 (ie, 100 = 1%) uint16 transferFees; // fees applied during transfers, from 0 to 2000 (ie, 100 = 1%) uint16 burnFeeRatio; // from 0 to 10000 (ie 8000 = 80% of the fee collected are burned) uint16 liquidityFeeRatio; // from 0 to 10000 (ie 8000 = 80% of the fee collected are added back to liquidity) uint16 collectorsFeeRatio; // from 0 to 10000 (ie 8000 = 80% of the fee collected are sent to fee collectors) } address public constant BURN_ADDRESS = address(0x000000000000000000000000000000000000dEaD); uint16 public constant MAX_FEE = 2000; // max 20% fees uint16 public constant FEE_PRECISION = 10000; // swap config IUniswapV2Router02 public swapRouter; address public swapPair; address public liquidityOwner; // fees bool private _processingFees; bool public autoProcessFees; uint256 public numTokensToSwap; // amount of tokens to collect before processing fees (default to 0.05% of supply) FeeConfiguration public feeConfiguration; mapping(address => bool) private _excludedFromFees; mapping(address => bool) private _lpPools; event FeeConfigurationUpdated(FeeConfiguration configuration); event SwapRouterUpdated(address indexed router, address indexed pair); event ExcludedFromFees(address indexed account, bool excluded); event SetLpPool(address indexed pairAddress, bool isLp); modifier lockTheSwap() { _processingFees = true; _; _processingFees = false; } constructor( bool autoProcessFees_, uint256 numTokensToSwap_, address swapRouter_, FeeConfiguration memory feeConfiguration_ ) { numTokensToSwap = numTokensToSwap_; autoProcessFees = autoProcessFees_; liquidityOwner = _msgSender(); // Create a uniswap pair for this new token swapRouter = IUniswapV2Router02(swapRouter_); swapPair = _pairFor(swapRouter.factory(), address(this), swapRouter.WETH()); _lpPools[swapPair] = true; // configure addresses excluded from fee _setIsExcludedFromFees(_msgSender(), true); _setIsExcludedFromFees(address(this), true); // configure fees _setFeeConfiguration(feeConfiguration_); } // receive ETH when swaping receive() external payable {} function isExcludedFromFees(address account) public view returns (bool) { return _excludedFromFees[account]; } function _setIsExcludedFromFees(address account, bool excluded) internal { require(_excludedFromFees[account] != excluded, "Already set"); _excludedFromFees[account] = excluded; emit ExcludedFromFees(account, excluded); } function _setIsLpPool(address pairAddress, bool isLp) internal { require(_lpPools[pairAddress] != isLp, "Already set"); _lpPools[pairAddress] = isLp; emit SetLpPool(pairAddress, isLp); } function isLpPool(address pairAddress) public view returns (bool) { return _lpPools[pairAddress]; } function _setSwapRouter(address _newRouter) internal { require(_newRouter != address(0), "Invalid router"); swapRouter = IUniswapV2Router02(_newRouter); IUniswapV2Factory factory = IUniswapV2Factory(swapRouter.factory()); require(address(factory) != address(0), "Invalid factory"); address weth = swapRouter.WETH(); swapPair = factory.getPair(address(this), weth); if (swapPair == address(0)) { swapPair = factory.createPair(address(this), weth); } require(swapPair != address(0), "Invalid pair address."); emit SwapRouterUpdated(address(swapRouter), swapPair); } function _setFeeConfiguration(FeeConfiguration memory configuration) internal { require(configuration.buyFees <= MAX_FEE, "Invalid buy fee"); require(configuration.sellFees <= MAX_FEE, "Invalid sell fee"); require(configuration.transferFees <= MAX_FEE, "Invalid transfer fee"); uint16 totalShare = configuration.burnFeeRatio + configuration.liquidityFeeRatio + configuration.collectorsFeeRatio; require(totalShare == 0 || totalShare == FEE_PRECISION, "Invalid fee share"); feeConfiguration = configuration; emit FeeConfigurationUpdated(configuration); } function _processFees(uint256 tokenAmount, uint256 minAmountOut) internal lockTheSwap { uint256 contractTokenBalance = balanceOf(address(this)); if (contractTokenBalance >= tokenAmount) { uint256 liquidityAmount = (tokenAmount * feeConfiguration.liquidityFeeRatio) / (FEE_PRECISION - feeConfiguration.burnFeeRatio); uint256 liquidityTokens = liquidityAmount / 2; uint256 collectorsAmount = tokenAmount - liquidityAmount; uint256 liquifyAmount = liquidityAmount - liquidityTokens; if (!feeConfiguration.feesInToken) { liquifyAmount += collectorsAmount; } // swap tokens if (liquifyAmount > 0) { if (balanceOf(swapPair) == 0) { // do not swap before the pair has liquidity return; } // capture the contract's current balance. uint256 initialBalance = address(this).balance; _swapTokensForEth(liquifyAmount, minAmountOut); // how much did we just swap into? uint256 swapBalance = address(this).balance - initialBalance; // add liquidity uint256 liquidityETH = (swapBalance * liquidityTokens) / liquifyAmount; if (liquidityETH > 0) { _addLiquidity(liquidityTokens, liquidityETH); } } if (feeConfiguration.feesInToken) { // send tokens to fee collectors _distributeFees(collectorsAmount, true); } else { // send remaining ETH to fee collectors _distributeFees(address(this).balance, false); } } } /// @dev Swap tokens for eth function _swapTokensForEth(uint256 tokenAmount, uint256 minAmountOut) private { // generate the swap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = swapRouter.WETH(); _approve(address(this), address(swapRouter), tokenAmount); // make the swap swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, minAmountOut, path, address(this), block.timestamp ); } /// @dev Add liquidity function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(swapRouter), tokenAmount); // add the liquidity swapRouter.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable liquidityOwner, block.timestamp ); } // calculates the CREATE2 address for a pair without making any external calls function _pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) { (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA); pair = address( uint160( uint( keccak256( abi.encodePacked( hex"ff", factory, keccak256(abi.encodePacked(token0, token1)), hex"96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f" // init code hash ) ) ) ) ); } function _transfer(address from, address to, uint256 amount) internal virtual override { require(amount > 0, "Transfer <= 0"); uint256 taxFee = 0; bool processFee = !_processingFees && autoProcessFees; if (!_processingFees) { bool fromExcluded = isExcludedFromFees(from); bool toExcluded = isExcludedFromFees(to); bool fromLP = isLpPool(from); bool toLP = isLpPool(to); if (fromLP && !toLP && !toExcluded && to != address(swapRouter)) { // buy fee taxFee = feeConfiguration.buyFees; } else if (toLP && !fromExcluded && !toExcluded) { // sell fee taxFee = feeConfiguration.sellFees; } else if (!fromLP && !toLP && from != address(swapRouter) && !fromExcluded) { // transfer fee taxFee = feeConfiguration.transferFees; } } // process fees if (processFee && taxFee > 0 && !_lpPools[from]) { uint256 contractTokenBalance = balanceOf(address(this)); if (contractTokenBalance >= numTokensToSwap) { _processFees(numTokensToSwap, 0); } } if (taxFee > 0) { uint256 taxAmount = (amount * taxFee) / FEE_PRECISION; uint256 sendAmount = amount - taxAmount; uint256 burnAmount = (taxAmount * feeConfiguration.burnFeeRatio) / FEE_PRECISION; if (burnAmount > 0) { taxAmount -= burnAmount; super._transfer(from, BURN_ADDRESS, burnAmount); } if (taxAmount > 0) { super._transfer(from, address(this), taxAmount); } if (sendAmount > 0) { super._transfer(from, to, sendAmount); } } else { super._transfer(from, to, amount); } } function setAutoprocessFees(bool autoProcess) external virtual; function setIsLpPool(address pairAddress, bool isLp) external virtual; function setIsExcludedFromFees(address account, bool excluded) external virtual; function processFees(uint256 amount, uint256 minAmountOut) external virtual; function setLiquidityOwner(address newOwner) external virtual; function setNumTokensToSwap(uint256 amount) external virtual; function setFeeConfiguration(FeeConfiguration calldata configuration) external virtual; function setSwapRouter(address newRouter) external virtual; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/Context.sol"; import "./ERC20Base.sol"; /** * @dev Extension of {ERC20} that allows token holders to destroy both their own * tokens and those that they have an allowance for, in a way that can be * recognized off-chain (via event analysis). */ abstract contract ERC20Burnable is Context, ERC20Base { /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 amount) external virtual { _burn(_msgSender(), amount); } /** * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `amount`. */ function _burnFrom(address account, uint256 amount) internal virtual { uint256 currentAllowance = allowance(account, _msgSender()); require(currentAllowance >= amount, "ERC20Burnable: burn amount exceeds allowance"); unchecked { _approve(account, _msgSender(), currentAllowance - amount); } _burn(account, amount); } /** * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. */ function burnFrom(address account, uint256 amount) external virtual { _burnFrom(account, amount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; abstract contract ERC20Base is ERC20 { uint8 private immutable _decimals; uint256 public immutable TOKEN_CODE; constructor( string memory name_, string memory symbol_, uint8 decimals_ ) ERC20(name_, symbol_) { _decimals = decimals_; } function decimals() public view override returns (uint8) { return _decimals; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./ERC20Base.sol"; /* * AntiWhaleToken: Limit the max wallet size */ abstract contract AntiWhaleToken is ERC20Base { uint256 public maxTokenPerWallet; // anti whale: max token per wallet (default to 1% of supply) event MaxTokenPerWalletUpdated(uint256 amount); modifier antiWhale( address sender, address recipient, uint256 amount ) { if (maxTokenPerWallet != 0 && !isExcludedFromAntiWhale(recipient)) { require(balanceOf(recipient) + amount <= maxTokenPerWallet, "Wallet exceeds max"); } _; } constructor(uint256 maxTokenPerWallet_) { maxTokenPerWallet = maxTokenPerWallet_; } function isExcludedFromAntiWhale(address account) public view virtual returns (bool); /** * @dev Update the max token per wallet * set to 0 to disable */ function _setMaxTokenPerWallet(uint256 amount) internal { require(amount == 0 || amount > (totalSupply() * 5) / 1000, "Amount too low"); // min 0.5% of supply maxTokenPerWallet = amount; emit MaxTokenPerWalletUpdated(amount); } function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual override antiWhale(from, to, amount) { super._beforeTokenTransfer(from, to, amount); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.17; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import "./ERC20Base.sol"; abstract contract TaxDistributor is ERC20Base { using EnumerableSet for EnumerableSet.AddressSet; EnumerableSet.AddressSet private _collectors; mapping(address => uint256) private _shares; uint256 public totalFeeCollectorsShares; event FeeCollectorAdded(address indexed account, uint256 share); event FeeCollectorUpdated(address indexed account, uint256 oldShare, uint256 newShare); event FeeCollectorRemoved(address indexed account); event FeeCollected(address indexed receiver, uint256 amount); constructor(address[] memory collectors_, uint256[] memory shares_) { require(collectors_.length == shares_.length, "Invalid fee collectors"); for (uint256 i = 0; i < collectors_.length; i++) { _addFeeCollector(collectors_[i], shares_[i]); } } function isFeeCollector(address account) public view returns (bool) { return _collectors.contains(account); } function feeCollectorShare(address account) public view returns (uint256) { return _shares[account]; } function _addFeeCollector(address account, uint256 share) internal { require(!_collectors.contains(account), "Already fee collector"); require(share > 0, "Invalid share"); _collectors.add(account); _shares[account] = share; totalFeeCollectorsShares += share; emit FeeCollectorAdded(account, share); } function _removeFeeCollector(address account) internal { require(_collectors.contains(account), "Not fee collector"); _collectors.remove(account); totalFeeCollectorsShares -= _shares[account]; delete _shares[account]; emit FeeCollectorRemoved(account); } function _updateFeeCollectorShare(address account, uint256 share) internal { require(_collectors.contains(account), "Not fee collector"); require(share > 0, "Invalid share"); uint256 oldShare = _shares[account]; totalFeeCollectorsShares -= oldShare; _shares[account] = share; totalFeeCollectorsShares += share; emit FeeCollectorUpdated(account, oldShare, share); } function _distributeFees(uint256 amount, bool inToken) internal returns (bool) { if (amount == 0) return false; if (totalFeeCollectorsShares == 0) return false; uint256 distributed = 0; uint256 len = _collectors.length(); for (uint256 i = 0; i < len; i++) { address collector = _collectors.at(i); uint256 share = i == len - 1 ? amount - distributed : (amount * _shares[collector]) / totalFeeCollectorsShares; if (inToken) { _transfer(address(this), collector, share); } else { payable(collector).transfer(share); } emit FeeCollected(collector, share); distributed += share; } return true; } function addFeeCollector(address account, uint256 share) external virtual; function removeFeeCollector(address account) external virtual; function updateFeeCollectorShare(address account, uint256 share) external virtual; function distributeFees(uint256 amount, bool inToken) external virtual; }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2; import './IUniswapV2Router01.sol'; interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by // decrementing then incrementing. _balances[to] += amount; } emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; unchecked { // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above. _balances[account] += amount; } emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; // Overflow not possible: amount <= accountBalance <= totalSupply. _totalSupply -= amount; } emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.20; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ```solidity * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position is the index of the value in the `values` array plus 1. // Position 0 is used to mean a value is not in the set. mapping(bytes32 value => uint256) _positions; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._positions[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We cache the value's position to prevent multiple reads from the same storage slot uint256 position = set._positions[value]; if (position != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 valueIndex = position - 1; uint256 lastIndex = set._values.length - 1; if (valueIndex != lastIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the lastValue to the index where the value to delete is set._values[valueIndex] = lastValue; // Update the tracked position of the lastValue (that was just moved) set._positions[lastValue] = position; } // Delete the slot where the moved value was stored set._values.pop(); // Delete the tracked position for the deleted slot delete set._positions[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._positions[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 value) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets a `value` amount of tokens as the allowance of `spender` over the * caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 value) external returns (bool); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
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- No Contract Security Audit Submitted- Submit Audit Here
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Contract Creation Code
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