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pragma solidity 0.8.16;
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interface IUniswapV2Factory {
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event PairCreated(
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address indexed token0,
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address indexed token1,
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address pair,
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uint256
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);
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function feeTo() external view returns (address);
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function feeToSetter() external view returns (address);
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function allPairsLength() external view returns (uint256);
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function getPair(address tokenA, address tokenB)
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external
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view
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returns (address pair);
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function allPairs(uint256) external view returns (address pair);
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function createPair(address tokenA, address tokenB)
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external
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returns (address pair);
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function setFeeTo(address) external;
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function setFeeToSetter(address) external;
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}
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interface IUniswapV2Pair {
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event Approval(
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address indexed owner,
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address indexed spender,
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uint256 value
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);
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event Transfer(address indexed from, address indexed to, uint256 value);
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function name() external pure returns (string memory);
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function symbol() external pure returns (string memory);
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function decimals() external pure returns (uint8);
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function totalSupply() external view returns (uint256);
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function balanceOf(address owner) external view returns (uint256);
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function allowance(address owner, address spender)
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external
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view
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returns (uint256);
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function approve(address spender, uint256 value) external returns (bool);
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function transfer(address to, uint256 value) external returns (bool);
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function transferFrom(
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address from,
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address to,
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uint256 value
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) external returns (bool);
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function DOMAIN_SEPARATOR() external view returns (bytes32);
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function PERMIT_TYPEHASH() external pure returns (bytes32);
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function nonces(address owner) external view returns (uint256);
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function permit(
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address owner,
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address spender,
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uint256 value,
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uint256 deadline,
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uint8 v,
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bytes32 r,
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bytes32 s
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) external;
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event Mint(address indexed sender, uint256 amount0, uint256 amount1);
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event Burn(
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address indexed sender,
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uint256 amount0,
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uint256 amount1,
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address indexed to
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);
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event Swap(
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address indexed sender,
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uint256 amount0In,
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uint256 amount1In,
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uint256 amount0Out,
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uint256 amount1Out,
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address indexed to
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);
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event Sync(uint112 reserve0, uint112 reserve1);
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function MINIMUM_LIQUIDITY() external pure returns (uint256);
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function factory() external view returns (address);
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function token0() external view returns (address);
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function token1() external view returns (address);
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function getReserves()
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external
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view
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returns (
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uint112 reserve0,
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uint112 reserve1,
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uint32 blockTimestampLast
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);
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function price0CumulativeLast() external view returns (uint256);
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function price1CumulativeLast() external view returns (uint256);
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function kLast() external view returns (uint256);
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function mint(address to) external returns (uint256 liquidity);
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function burn(address to)
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external
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returns (uint256 amount0, uint256 amount1);
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function swap(
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uint256 amount0Out,
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uint256 amount1Out,
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address to,
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bytes calldata data
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) external;
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function skim(address to) external;
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function sync() external;
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function initialize(address, address) external;
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}
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interface IUniswapV2Router01 {
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function factory() external pure returns (address);
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function WETH() external pure returns (address);
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function addLiquidity(
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address tokenA,
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address tokenB,
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uint256 amountADesired,
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uint256 amountBDesired,
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uint256 amountAMin,
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uint256 amountBMin,
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address to,
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uint256 deadline
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)
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external
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returns (
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uint256 amountA,
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uint256 amountB,
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uint256 liquidity
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);
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function addLiquidityETH(
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address token,
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uint256 amountTokenDesired,
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uint256 amountTokenMin,
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uint256 amountETHMin,
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address to,
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uint256 deadline
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)
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external
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payable
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returns (
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uint256 amountToken,
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uint256 amountETH,
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uint256 liquidity
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);
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function removeLiquidity(
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address tokenA,
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address tokenB,
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uint256 liquidity,
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uint256 amountAMin,
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uint256 amountBMin,
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address to,
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uint256 deadline
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) external returns (uint256 amountA, uint256 amountB);
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function removeLiquidityETH(
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address token,
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uint256 liquidity,
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uint256 amountTokenMin,
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uint256 amountETHMin,
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address to,
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uint256 deadline
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) external returns (uint256 amountToken, uint256 amountETH);
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function removeLiquidityWithPermit(
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address tokenA,
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address tokenB,
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uint256 liquidity,
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uint256 amountAMin,
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uint256 amountBMin,
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address to,
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uint256 deadline,
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bool approveMax,
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uint8 v,
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bytes32 r,
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bytes32 s
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) external returns (uint256 amountA, uint256 amountB);
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function removeLiquidityETHWithPermit(
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address token,
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uint256 liquidity,
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uint256 amountTokenMin,
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uint256 amountETHMin,
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address to,
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uint256 deadline,
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bool approveMax,
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uint8 v,
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bytes32 r,
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bytes32 s
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) external returns (uint256 amountToken, uint256 amountETH);
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function swapExactTokensForTokens(
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uint256 amountIn,
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external returns (uint256[] memory amounts);
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function swapTokensForExactTokens(
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uint256 amountOut,
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uint256 amountInMax,
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address[] calldata path,
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address to,
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uint256 deadline
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) external returns (uint256[] memory amounts);
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function swapExactETHForTokens(
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external payable returns (uint256[] memory amounts);
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function swapTokensForExactETH(
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uint256 amountOut,
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uint256 amountInMax,
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address[] calldata path,
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address to,
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uint256 deadline
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) external returns (uint256[] memory amounts);
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function swapExactTokensForETH(
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uint256 amountIn,
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external returns (uint256[] memory amounts);
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function swapETHForExactTokens(
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uint256 amountOut,
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address[] calldata path,
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address to,
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uint256 deadline
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) external payable returns (uint256[] memory amounts);
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function quote(
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uint256 amountA,
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uint256 reserveA,
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uint256 reserveB
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) external pure returns (uint256 amountB);
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function getAmountOut(
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uint256 amountIn,
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uint256 reserveIn,
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uint256 reserveOut
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) external pure returns (uint256 amountOut);
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function getAmountIn(
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uint256 amountOut,
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uint256 reserveIn,
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uint256 reserveOut
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) external pure returns (uint256 amountIn);
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function getAmountsOut(uint256 amountIn, address[] calldata path)
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external
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view
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returns (uint256[] memory amounts);
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function getAmountsIn(uint256 amountOut, address[] calldata path)
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external
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view
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returns (uint256[] memory amounts);
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}
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interface IUniswapV2Router02 is IUniswapV2Router01 {
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function removeLiquidityETHSupportingFeeOnTransferTokens(
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address token,
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uint256 liquidity,
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uint256 amountTokenMin,
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uint256 amountETHMin,
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address to,
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uint256 deadline
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) external returns (uint256 amountETH);
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function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
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address token,
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uint256 liquidity,
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uint256 amountTokenMin,
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uint256 amountETHMin,
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address to,
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uint256 deadline,
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bool approveMax,
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uint8 v,
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bytes32 r,
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bytes32 s
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) external returns (uint256 amountETH);
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function swapExactETHForTokensSupportingFeeOnTransferTokens(
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external payable;
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function swapExactTokensForTokensSupportingFeeOnTransferTokens(
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uint256 amountIn,
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external;
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function swapExactTokensForETHSupportingFeeOnTransferTokens(
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uint256 amountIn,
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external;
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}
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interface IERC20 {
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(
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address indexed owner,
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address indexed spender,
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uint256 value
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);
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function totalSupply() external view returns (uint256);
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function balanceOf(address account) external view returns (uint256);
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function transfer(address to, uint256 amount) external returns (bool);
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function allowance(address owner, address spender)
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external
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view
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returns (uint256);
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function approve(address spender, uint256 amount) external returns (bool);
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function transferFrom(
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address from,
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address to,
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uint256 amount
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) external returns (bool);
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}
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interface IERC20Metadata is IERC20 {
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function name() external view returns (string memory);
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function decimals() external view returns (uint8);
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function symbol() external view returns (string memory);
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}
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abstract contract Context {
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function _msgSender() internal view virtual returns (address) {
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return msg.sender;
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}
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}
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abstract contract Ownable is Context {
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address private _owner;
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event OwnershipTransferred(
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address indexed previousOwner,
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address indexed newOwner
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);
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constructor() {
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_transferOwnership(_msgSender());
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}
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modifier onlyOwner() {
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_checkOwner();
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_;
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}
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function owner() public view virtual returns (address) {
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return _owner;
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}
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function _checkOwner() internal view virtual {
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require(owner() == _msgSender(), "Ownable: caller is not the owner");
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}
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function renounceOwnership() public virtual onlyOwner {
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_transferOwnership(address(0));
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}
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function transferOwnership(address newOwner) public virtual onlyOwner {
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require(
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newOwner != address(0),
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"Ownable: new owner is the zero address"
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);
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_transferOwnership(newOwner);
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}
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function _transferOwnership(address newOwner) internal virtual {
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address oldOwner = _owner;
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_owner = newOwner;
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emit OwnershipTransferred(oldOwner, newOwner);
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}
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}
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contract ERC20 is Context, IERC20, IERC20Metadata {
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mapping(address => uint256) private _balances;
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mapping(address => mapping(address => uint256)) private _allowances;
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uint256 private _totalSupply;
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string private _name;
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string private _symbol;
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constructor(string memory name_, string memory symbol_) {
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_name = name_;
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_symbol = symbol_;
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}
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function symbol() external view virtual override returns (string memory) {
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return _symbol;
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}
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function name() external view virtual override returns (string memory) {
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return _name;
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}
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function balanceOf(address account)
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public
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view
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virtual
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override
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returns (uint256)
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{
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return _balances[account];
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}
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function decimals() public view virtual override returns (uint8) {
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return 9;
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}
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function totalSupply() external view virtual override returns (uint256) {
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return _totalSupply;
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}
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function allowance(address owner, address spender)
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public
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view
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virtual
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override
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returns (uint256)
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{
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return _allowances[owner][spender];
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}
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function transfer(address to, uint256 amount)
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external
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virtual
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override
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returns (bool)
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{
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address owner = _msgSender();
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_transfer(owner, to, amount);
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return true;
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}
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function approve(address spender, uint256 amount)
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external
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virtual
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override
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returns (bool)
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{
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address owner = _msgSender();
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_approve(owner, spender, amount);
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return true;
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}
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function transferFrom(
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address from,
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address to,
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uint256 amount
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) external virtual override returns (bool) {
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address spender = _msgSender();
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_spendAllowance(from, spender, amount);
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_transfer(from, to, amount);
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return true;
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}
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function decreaseAllowance(address spender, uint256 subtractedValue)
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external
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virtual
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returns (bool)
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{
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address owner = _msgSender();
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uint256 currentAllowance = allowance(owner, spender);
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require(
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currentAllowance >= subtractedValue,
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"ERC20: decreased allowance below zero"
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);
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unchecked {
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_approve(owner, spender, currentAllowance - subtractedValue);
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}
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return true;
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}
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function increaseAllowance(address spender, uint256 addedValue)
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external
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virtual
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returns (bool)
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{
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address owner = _msgSender();
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_approve(owner, spender, allowance(owner, spender) + addedValue);
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return true;
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}
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function _mint(address account, uint256 amount) internal virtual {
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require(account != address(0), "ERC20: mint to the zero address");
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_totalSupply += amount;
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unchecked {
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_balances[account] += amount;
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}
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emit Transfer(address(0), account, amount);
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}
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function _burn(address account, uint256 amount) internal virtual {
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require(account != address(0), "ERC20: burn from the zero address");
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uint256 accountBalance = _balances[account];
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require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
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unchecked {
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_balances[account] = accountBalance - amount;
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_totalSupply -= amount;
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}
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emit Transfer(account, address(0), amount);
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}
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function _approve(
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address owner,
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address spender,
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uint256 amount
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) internal virtual {
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require(owner != address(0), "ERC20: approve from the zero address");
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require(spender != address(0), "ERC20: approve to the zero address");
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_allowances[owner][spender] = amount;
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emit Approval(owner, spender, amount);
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}
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function _spendAllowance(
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address owner,
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address spender,
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uint256 amount
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) internal virtual {
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uint256 currentAllowance = allowance(owner, spender);
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if (currentAllowance != type(uint256).max) {
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require(
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currentAllowance >= amount,
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"ERC20: insufficient allowance"
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);
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unchecked {
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_approve(owner, spender, currentAllowance - amount);
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}
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}
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}
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function _transfer(
|
|
address from,
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address to,
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uint256 amount
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|
) internal virtual {
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|
require(from != address(0), "ERC20: transfer from the zero address");
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require(to != address(0), "ERC20: transfer to the zero address");
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uint256 fromBalance = _balances[from];
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require(
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fromBalance >= amount,
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"ERC20: transfer amount exceeds balance"
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);
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unchecked {
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_balances[from] = fromBalance - amount;
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_balances[to] += amount;
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}
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emit Transfer(from, to, amount);
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}
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}
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|
|
contract HOMURA is ERC20, Ownable {
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|
string private _name = "Homura Akemi";
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|
string private _symbol = "HOMURA";
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|
uint8 private _decimals = 9;
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|
uint256 private _supply = 60000000;
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|
uint256 public taxForLiquidity = 1;
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|
uint256 public taxForMarketing = 1;
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|
uint256 public maxTxAmount = 1200000 * 10**_decimals;
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|
uint256 public maxWalletAmount = 1200000 * 10**_decimals;
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|
address public marketingWallet = 0x7C100c797345063b39B5206474996aDd6F6E31Fb;
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|
|
IUniswapV2Router02 public immutable uniswapV2Router;
|
|
address public immutable uniswapV2Pair;
|
|
|
|
uint256 private _marketingReserves = 0;
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|
mapping(address => bool) private _isExcludedFromFee;
|
|
uint256 private _numTokensSellToAddToLiquidity = 50000 * 10**_decimals;
|
|
uint256 private _numTokensSellToAddToETH = 20000 * 10**_decimals;
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bool inSwapAndLiquify;
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event SwapAndLiquify(
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uint256 tokensSwapped,
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uint256 ethReceived,
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uint256 tokensIntoLiqudity
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);
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modifier lockTheSwap() {
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inSwapAndLiquify = true;
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_;
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inSwapAndLiquify = false;
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}
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constructor() ERC20(_name, _symbol) {
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_mint(msg.sender, (_supply * 10**_decimals));
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IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
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uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
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uniswapV2Router = _uniswapV2Router;
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_isExcludedFromFee[address(uniswapV2Router)] = true;
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_isExcludedFromFee[msg.sender] = true;
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_isExcludedFromFee[marketingWallet] = true;
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}
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function _transfer(address from, address to, uint256 amount) internal override {
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require(from != address(0), "ERC20: transfer from the zero address");
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require(to != address(0), "ERC20: transfer to the zero address");
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require(balanceOf(from) >= amount, "ERC20: transfer amount exceeds balance");
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if ((from == uniswapV2Pair || to == uniswapV2Pair) && !inSwapAndLiquify) {
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if (from != uniswapV2Pair) {
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uint256 contractLiquidityBalance = balanceOf(address(this)) - _marketingReserves;
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if (contractLiquidityBalance >= _numTokensSellToAddToLiquidity) {
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_swapAndLiquify(_numTokensSellToAddToLiquidity);
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}
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if ((_marketingReserves) >= _numTokensSellToAddToETH) {
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_swapTokensForEth(_numTokensSellToAddToETH);
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_marketingReserves -= _numTokensSellToAddToETH;
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bool sent = payable(marketingWallet).send(address(this).balance);
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require(sent, "Failed to send ETH");
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}
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}
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uint256 transferAmount;
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if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
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transferAmount = amount;
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}
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else {
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require(amount <= maxTxAmount, "ERC20: transfer amount exceeds the max transaction amount");
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if(from == uniswapV2Pair){
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require((amount + balanceOf(to)) <= maxWalletAmount, "ERC20: balance amount exceeded max wallet amount limit");
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}
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uint256 marketingShare = ((amount * taxForMarketing) / 100);
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uint256 liquidityShare = ((amount * taxForLiquidity) / 100);
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transferAmount = amount - (marketingShare + liquidityShare);
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_marketingReserves += marketingShare;
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super._transfer(from, address(this), (marketingShare + liquidityShare));
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}
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super._transfer(from, to, transferAmount);
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}
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else {
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super._transfer(from, to, amount);
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}
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}
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function _swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
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uint256 half = (contractTokenBalance / 2);
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uint256 otherHalf = (contractTokenBalance - half);
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uint256 initialBalance = address(this).balance;
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_swapTokensForEth(half);
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uint256 newBalance = (address(this).balance - initialBalance);
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_addLiquidity(otherHalf, newBalance);
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emit SwapAndLiquify(half, newBalance, otherHalf);
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}
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function _swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
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address[] memory path = new address[](2);
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path[0] = address(this);
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path[1] = uniswapV2Router.WETH();
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_approve(address(this), address(uniswapV2Router), tokenAmount);
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uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
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tokenAmount,
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0,
|
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path,
|
|
address(this),
|
|
(block.timestamp + 300)
|
|
);
|
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}
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|
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function _addLiquidity(uint256 tokenAmount, uint256 ethAmount)
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private
|
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lockTheSwap
|
|
{
|
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_approve(address(this), address(uniswapV2Router), tokenAmount);
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|
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uniswapV2Router.addLiquidityETH{value: ethAmount}(
|
|
address(this),
|
|
tokenAmount,
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|
0,
|
|
0,
|
|
owner(),
|
|
block.timestamp
|
|
);
|
|
}
|
|
|
|
function changeMarketingWallet(address newWallet)
|
|
public
|
|
onlyOwner
|
|
returns (bool)
|
|
{
|
|
marketingWallet = newWallet;
|
|
return true;
|
|
}
|
|
|
|
function changeMaxTxAmount(uint256 _maxTxAmount)
|
|
public
|
|
onlyOwner
|
|
returns (bool)
|
|
{
|
|
maxTxAmount = _maxTxAmount;
|
|
|
|
return true;
|
|
}
|
|
|
|
function changeMaxWalletAmount(uint256 _maxWalletAmount)
|
|
public
|
|
onlyOwner
|
|
returns (bool)
|
|
{
|
|
maxWalletAmount = _maxWalletAmount;
|
|
|
|
return true;
|
|
}
|
|
|
|
receive() external payable {}
|
|
} |
