编译器
0.8.19+commit.7dd6d404
文件 1 的 10:Constants.sol
pragma solidity 0.8.19;
abstract contract Constants {
uint256 public constant DIVIDER = 10000;
}
文件 2 的 10:DexSwapERC20.sol
pragma solidity 0.8.19;
import "./interfaces/IDexSwapERC20.sol";
contract DexSwapERC20 is IDexSwapERC20 {
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
string public constant name = "DexSwap LPs";
string public constant symbol = "DexSwap-LP";
uint8 public constant decimals = 18;
bytes32 public override DOMAIN_SEPARATOR;
uint256 public totalSupply;
mapping(address => uint256) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
mapping(address => uint256) public nonces;
constructor() {
uint256 chainId;
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(name)),
keccak256(bytes("1")),
chainId,
address(this)
)
);
}
function _mint(address to, uint256 value) internal {
totalSupply = totalSupply + value;
balanceOf[to] = balanceOf[to] + value;
emit Transfer(address(0), to, value);
}
function _burn(address from, uint256 value) internal {
balanceOf[from] = balanceOf[from] - value;
totalSupply = totalSupply - value;
emit Transfer(from, address(0), value);
}
function _approve(address owner, address spender, uint256 value) private {
allowance[owner][spender] = value;
emit Approval(owner, spender, value);
}
function _transfer(address from, address to, uint256 value) private {
balanceOf[from] = balanceOf[from] - value;
balanceOf[to] = balanceOf[to] + value;
emit Transfer(from, to, value);
}
function approve(address spender, uint256 value) external returns (bool) {
_approve(msg.sender, spender, value);
return true;
}
function transfer(address to, uint256 value) external returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint256 value) external returns (bool) {
if (allowance[from][msg.sender] != type(uint256).max) {
allowance[from][msg.sender] = allowance[from][msg.sender] - value;
}
_transfer(from, to, value);
return true;
}
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external {
require(deadline >= block.timestamp, "DexSwapERC20: EXPIRED");
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, "DexSwapERC20: INVALID_SIGNATURE");
_approve(owner, spender, value);
}
}
文件 3 的 10:DexSwapPair.sol
pragma solidity 0.8.19;
import "./DexSwapERC20.sol";
import "./abstracts/Constants.sol";
import "./interfaces/IERC20.sol";
import "./interfaces/IDexSwapPair.sol";
import "./interfaces/IDexSwapFactory.sol";
import "./interfaces/IDexSwapCallee.sol";
import "./libraries/Math.sol";
import "./libraries/UQ112x112.sol";
contract DexSwapPair is IDexSwapPair, DexSwapERC20, Constants {
using UQ112x112 for uint224;
bytes4 private constant SELECTOR = bytes4(keccak256(bytes("transfer(address,uint256)")));
uint256 public constant MINIMUM_LIQUIDITY = 10 ** 3;
uint256 public constant MAX_FEE = 100;
uint256 public constant MAX_PROTOCOL_SHARE = 100;
uint256 public fee;
uint256 public protocolShare;
address public factory;
address public token0;
address public token1;
uint256 public price0CumulativeLast;
uint256 public price1CumulativeLast;
uint256 public kLast;
uint256 internal decimals0;
uint256 internal decimals1;
uint256 private blockTimestampLast;
uint112 private reserve0;
uint112 private reserve1;
uint256 private unlocked = 1;
function getAmountIn(uint256 amountOut, address tokenIn, address caller) public view returns (uint256 amountIn) {
(uint256 _reserve0, uint256 _reserve1, ) = getReserves();
require(amountOut > 0, "DexSwapPair: INSUFFICIENT_INPUT_AMOUNT");
require(_reserve0 > 0 && _reserve1 > 0, "DexSwapPair: INSUFFICIENT_LIQUIDITY");
if (tokenIn == token1) (_reserve0, _reserve1) = (_reserve1, _reserve0);
uint256 fee_ = IDexSwapFactory(factory).feeWhitelistContains(caller) ? 0 : fee;
uint256 numerator = _reserve0 * amountOut * DIVIDER;
uint256 denominator = (_reserve1 - amountOut) * (DIVIDER - fee_);
amountIn = (numerator / denominator) + 1;
}
function getAmountOut(uint256 amountIn, address tokenIn, address caller) public view returns (uint256 amountOut) {
(uint256 _reserve0, uint256 _reserve1, ) = getReserves();
require(amountIn > 0, "DexSwapPair: INSUFFICIENT_INPUT_AMOUNT");
require(_reserve0 > 0 && _reserve1 > 0, "DexSwapPair: INSUFFICIENT_LIQUIDITY");
uint256 fee_ = IDexSwapFactory(factory).feeWhitelistContains(caller) ? 0 : fee;
if (tokenIn == token1) (_reserve0, _reserve1) = (_reserve1, _reserve0);
uint amountInWithFee = amountIn * (DIVIDER - fee_);
uint numerator = amountInWithFee * _reserve1;
uint denominator = (_reserve0 * DIVIDER) + amountInWithFee;
amountOut = numerator / denominator;
}
function getReserves() public view returns (uint112 _reserve0, uint112 _reserve1, uint256 _blockTimestampLast) {
_reserve0 = reserve0;
_reserve1 = reserve1;
_blockTimestampLast = blockTimestampLast;
}
constructor() {
factory = msg.sender;
}
function burn(address to) external lock returns (uint256 amount0, uint256 amount1) {
(uint112 _reserve0, uint112 _reserve1, ) = getReserves();
address _token0 = token0;
address _token1 = token1;
uint256 balance0 = IERC20(_token0).balanceOf(address(this));
uint256 balance1 = IERC20(_token1).balanceOf(address(this));
uint256 liquidity = balanceOf[address(this)];
bool feeOn = _mintFee(_reserve0, _reserve1);
uint256 _totalSupply = totalSupply;
amount0 = (liquidity * balance0) / _totalSupply;
amount1 = (liquidity * balance1) / _totalSupply;
require(amount0 > 0 && amount1 > 0, "DexSwapPair: INSUFFICIENT_LIQUIDITY_BURNED");
_burn(address(this), liquidity);
_safeTransfer(_token0, to, amount0);
_safeTransfer(_token1, to, amount1);
balance0 = IERC20(_token0).balanceOf(address(this));
balance1 = IERC20(_token1).balanceOf(address(this));
_update(balance0, balance1, _reserve0, _reserve1);
if (feeOn) kLast = uint256(reserve0) * reserve1;
emit Burn(msg.sender, amount0, amount1, to);
}
function initialize(address _token0, address _token1) external onlyFactory {
token0 = _token0;
token1 = _token1;
decimals0 = 10 ** IERC20(_token0).decimals();
decimals1 = 10 ** IERC20(_token1).decimals();
}
function mint(address to) external lock returns (uint256 liquidity) {
(uint112 _reserve0, uint112 _reserve1, ) = getReserves();
uint256 balance0 = IERC20(token0).balanceOf(address(this));
uint256 balance1 = IERC20(token1).balanceOf(address(this));
uint256 amount0 = balance0 - _reserve0;
uint256 amount1 = balance1 - _reserve1;
bool feeOn = _mintFee(_reserve0, _reserve1);
uint256 _totalSupply = totalSupply;
if (_totalSupply == 0) {
liquidity = Math.sqrt(amount0 * amount1) - MINIMUM_LIQUIDITY;
_mint(address(0), MINIMUM_LIQUIDITY);
} else {
liquidity = Math.min((amount0 * _totalSupply) / _reserve0, (amount1 * _totalSupply) / _reserve1);
}
require(liquidity > 0, "DexSwapPair: INSUFFICIENT_LIQUIDITY_MINTED");
_mint(to, liquidity);
_update(balance0, balance1, _reserve0, _reserve1);
if (feeOn) kLast = uint256(reserve0) * reserve1;
emit Mint(msg.sender, amount0, amount1);
}
function skim(address to) external onlyFactory lock {
address _token0 = token0;
address _token1 = token1;
_safeTransfer(_token0, to, IERC20(_token0).balanceOf(address(this)) - reserve0);
_safeTransfer(_token1, to, IERC20(_token1).balanceOf(address(this)) - reserve1);
}
function sync() external lock {
_update(IERC20(token0).balanceOf(address(this)), IERC20(token1).balanceOf(address(this)), reserve0, reserve1);
}
function swap(uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data) external {
_swap(amount0Out, amount1Out, to, address(0), data);
}
function swapFromPeriphery(
uint256 amount0Out,
uint256 amount1Out,
address to,
address caller,
bytes calldata data
) external {
require(
IDexSwapFactory(factory).peripheryWhitelistContains(msg.sender),
"DexSwapPair: Caller is not periphery"
);
_swap(amount0Out, amount1Out, to, caller, data);
}
function updateFee(uint256 fee_) external onlyFactory returns (bool) {
require(fee_ <= MAX_FEE, "DexSwapFactory: Fee gt MAX_FEE");
fee = fee_;
emit FeeUpdated(fee_);
return true;
}
function updateProtocolShare(uint256 share) external onlyFactory returns (bool) {
require(share <= MAX_PROTOCOL_SHARE, "DexSwapFactory: Share gt MAX_PROTOCOL_SHARE");
protocolShare = share;
emit ProtocolShareUpdated(share);
return true;
}
function _mintFee(uint112 _reserve0, uint112 _reserve1) private returns (bool feeOn) {
address feeTo = IDexSwapFactory(factory).feeTo();
feeOn = feeTo != address(0) && protocolShare > 0;
uint256 _kLast = kLast;
if (feeOn) {
if (_kLast != 0) {
uint256 rootK = Math.sqrt(uint256(_reserve0) * _reserve1);
uint256 rootKLast = Math.sqrt(_kLast);
if (rootK > rootKLast) {
uint256 numerator = (totalSupply * (rootK - rootKLast)) * protocolShare;
uint256 denominator = (rootK * (MAX_PROTOCOL_SHARE - protocolShare)) + (rootKLast * protocolShare);
uint256 liquidity = numerator / denominator;
if (liquidity > 0) _mint(feeTo, liquidity);
}
}
} else if (_kLast != 0) {
kLast = 0;
}
}
function _safeTransfer(address token, address to, uint256 value) private {
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(SELECTOR, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), "DexSwapPair: TRANSFER_FAILED");
}
function _swap(
uint256 amount0Out,
uint256 amount1Out,
address to,
address caller,
bytes calldata data
) private lock {
IDexSwapFactory factory_ = IDexSwapFactory(factory);
require(
factory_.contractsWhitelistContains(address(0)) ||
msg.sender == tx.origin ||
factory_.contractsWhitelistContains(msg.sender),
"DexSwapPair: Caller is invalid"
);
require(amount0Out > 0 || amount1Out > 0, "DexSwapPair: INSUFFICIENT_OUTPUT_AMOUNT");
(uint112 _reserve0, uint112 _reserve1, ) = getReserves();
require(amount0Out < _reserve0 && amount1Out < _reserve1, "DexSwapPair: INSUFFICIENT_LIQUIDITY");
uint256 balance0;
uint256 balance1;
{
address _token0 = token0;
address _token1 = token1;
require(to != _token0 && to != _token1, "DexSwapPair: INVALID_TO");
if (amount0Out > 0) _safeTransfer(_token0, to, amount0Out);
if (amount1Out > 0) _safeTransfer(_token1, to, amount1Out);
if (data.length > 0) IDexSwapCallee(to).dexSwapCall(msg.sender, amount0Out, amount1Out, data);
balance0 = IERC20(_token0).balanceOf(address(this));
balance1 = IERC20(_token1).balanceOf(address(this));
}
uint256 amount0In = balance0 > _reserve0 - amount0Out ? balance0 - (_reserve0 - amount0Out) : 0;
uint256 amount1In = balance1 > _reserve1 - amount1Out ? balance1 - (_reserve1 - amount1Out) : 0;
require(amount0In > 0 || amount1In > 0, "DexSwapPair: INSUFFICIENT_INPUT_AMOUNT");
{
uint256 fee_ = (caller != address(0) && factory_.feeWhitelistContains(caller)) ? 0 : fee;
uint256 balance0Adjusted = (balance0 * DIVIDER) - (amount0In * fee_);
uint256 balance1Adjusted = (balance1 * DIVIDER) - (amount1In * fee_);
require(
balance0Adjusted * balance1Adjusted >= (uint256(_reserve0) * _reserve1) * DIVIDER ** 2,
"DexSwapPair: K"
);
}
_update(balance0, balance1, _reserve0, _reserve1);
emit Swap(msg.sender, amount0In, amount1In, amount0Out, amount1Out, to);
}
function _update(uint256 balance0, uint256 balance1, uint112 _reserve0, uint112 _reserve1) private {
require(balance0 <= type(uint112).max && balance1 <= type(uint112).max, "DexSwapPair: OVERFLOW");
uint256 blockTimestamp = block.timestamp % 2 ** 32;
uint256 timeElapsed = blockTimestamp - blockTimestampLast;
if (timeElapsed > 0 && _reserve0 != 0 && _reserve1 != 0) {
price0CumulativeLast += uint(UQ112x112.encode(_reserve1).uqdiv(_reserve0)) * timeElapsed;
price1CumulativeLast += uint(UQ112x112.encode(_reserve0).uqdiv(_reserve1)) * timeElapsed;
}
reserve0 = uint112(balance0);
reserve1 = uint112(balance1);
blockTimestampLast = blockTimestamp;
emit Sync(reserve0, reserve1);
}
modifier lock() {
require(unlocked == 1, "DexSwapPair: LOCKED");
unlocked = 0;
_;
unlocked = 1;
}
modifier onlyFactory() {
require(msg.sender == factory, "DexSwapPair: Caller is not factory");
_;
}
}
文件 4 的 10:IDexSwapCallee.sol
pragma solidity 0.8.19;
interface IDexSwapCallee {
function dexSwapCall(address sender, uint256 amount0, uint256 amount1, bytes calldata data) external;
}
文件 5 的 10:IDexSwapERC20.sol
pragma solidity 0.8.19;
interface IDexSwapERC20 {
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint256);
function balanceOf(address owner) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(address from, address to, uint256 value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external view returns (bytes32);
function nonces(address owner) external view returns (uint256);
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
文件 6 的 10:IDexSwapFactory.sol
pragma solidity 0.8.19;
interface IDexSwapFactory {
event ContractsWhitelistAdded(address[] contracts);
event ContractsWhitelistRemoved(address[] contracts);
event FeeUpdated(uint256 fee);
event ProtocolShareUpdated(uint256 share);
event FeePairUpdated(address indexed token0, address indexed token1, uint256 fee);
event ProtocolSharePairUpdated(address indexed token0, address indexed token1, uint256 share);
event FeeWhitelistAdded(address[] accounts);
event FeeWhitelistRemoved(address[] accounts);
event PairCreated(address indexed token0, address indexed token1, address pair, uint256);
event PeripheryWhitelistAdded(address[] periphery);
event PeripheryWhitelistRemoved(address[] periphery);
event Skimmed(address indexed token0, address indexed token1, address to);
function INIT_CODE_PAIR_HASH() external view returns (bytes32);
function contractsWhitelistList(uint256 offset, uint256 limit) external view returns (address[] memory output);
function contractsWhitelist(uint256 index) external view returns (address);
function contractsWhitelistContains(address contract_) external view returns (bool);
function contractsWhitelistCount() external view returns (uint256);
function protocolShare() external view returns (uint256);
function fee() external view returns (uint256);
function feeWhitelistList(uint256 offset, uint256 limit) external view returns (address[] memory output);
function feeWhitelist(uint256 index) external view returns (address);
function feeWhitelistContains(address account) external view returns (bool);
function feeWhitelistCount() external view returns (uint256);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function peripheryWhitelistList(uint256 offset, uint256 limit) external view returns (address[] memory output);
function peripheryWhitelist(uint256 index) external view returns (address);
function peripheryWhitelistContains(address account) external view returns (bool);
function peripheryWhitelistCount() external view returns (uint256);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
function addContractsWhitelist(address[] memory contracts) external returns (bool);
function addFeeWhitelist(address[] memory accounts) external returns (bool);
function addPeripheryWhitelist(address[] memory periphery) external returns (bool);
function removeContractsWhitelist(address[] memory contracts) external returns (bool);
function removeFeeWhitelist(address[] memory accounts) external returns (bool);
function removePeripheryWhitelist(address[] memory periphery) external returns (bool);
function createPair(address tokenA, address tokenB) external returns (address pair);
function updateFee(uint256 fee_) external returns (bool);
function updateProtocolShare(uint256 share) external returns (bool);
function updateFeePair(address token0, address token1, uint256 fee_) external returns (bool);
function updateProtocolSharePair(address token0, address token1, uint256 share) external returns (bool);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
function skim(address token0, address token1, address to) external returns (bool);
}
文件 7 的 10:IDexSwapPair.sol
pragma solidity 0.8.19;
import "./IDexSwapERC20.sol";
interface IDexSwapPair is IDexSwapERC20 {
event Mint(address indexed sender, uint256 amount0, uint256 amount1);
event Burn(address indexed sender, uint256 amount0, uint256 amount1, address indexed to);
event FeeUpdated(uint256 fee);
event ProtocolShareUpdated(uint256 share);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external view returns (uint256);
function MAX_FEE() external view returns (uint256);
function MAX_PROTOCOL_SHARE() external view returns (uint256);
function factory() external view returns (address);
function fee() external view returns (uint256);
function protocolShare() external view returns (uint256);
function token0() external view returns (address);
function token1() external view returns (address);
function getAmountOut(uint256 amountIn, address tokenIn, address caller) external view returns (uint256 amountOut);
function getAmountIn(uint256 amountOut, address tokenIn, address caller) external view returns (uint256 amountIn);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint256 blockTimestampLast);
function price0CumulativeLast() external view returns (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function mint(address to) external returns (uint256 liquidity);
function burn(address to) external returns (uint256 amount0, uint256 amount1);
function swap(uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data) external;
function swapFromPeriphery(
uint256 amount0Out,
uint256 amount1Out,
address to,
address caller,
bytes calldata data
) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
function updateFee(uint256 fee_) external returns (bool);
function updateProtocolShare(uint256 share) external returns (bool);
}
文件 8 的 10:IERC20.sol
pragma solidity 0.8.19;
interface IERC20 {
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint256);
function balanceOf(address owner) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(address from, address to, uint256 value) external returns (bool);
}
文件 9 的 10:Math.sol
pragma solidity 0.8.19;
library Math {
function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
z = x < y ? x : y;
}
function sqrt(uint256 y) internal pure returns (uint256 z) {
if (y > 3) {
z = y;
uint256 x = y / 2 + 1;
while (x < z) {
z = x;
x = (y / x + x) / 2;
}
} else if (y != 0) {
z = 1;
}
}
}
文件 10 的 10:UQ112x112.sol
pragma solidity 0.8.19;
library UQ112x112 {
uint224 constant Q112 = 2 ** 112;
function encode(uint112 y) internal pure returns (uint224 z) {
z = uint224(y) * Q112;
}
function uqdiv(uint224 x, uint112 y) internal pure returns (uint224 z) {
z = x / uint224(y);
}
}
{
"compilationTarget": {
"contracts/DexSwapPair.sol": "DexSwapPair"
},
"evmVersion": "paris",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs",
"useLiteralContent": true
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": [],
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}
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