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Migrate | 5307475 | 44 hrs ago | IN | 0 S | 0.00569413 | ||||
Buy Exact In | 5307130 | 44 hrs ago | IN | 20 S | 0.00101046 | ||||
Buy Exact In | 5306987 | 44 hrs ago | IN | 1 S | 0.00098448 | ||||
Buy Exact In | 5306872 | 44 hrs ago | IN | 1,377 S | 0.00098449 | ||||
Buy Exact Out | 5306717 | 44 hrs ago | IN | 0.00661272 S | 0.00101471 | ||||
Create Moonshot ... | 5306596 | 44 hrs ago | IN | 0 S | 0.00271266 | ||||
Create Moonshot ... | 5306537 | 45 hrs ago | IN | 0 S | 0.00271266 | ||||
Create Moonshot ... | 5306532 | 45 hrs ago | IN | 0 S | 0.00271266 | ||||
Create Moonshot ... | 5306169 | 45 hrs ago | IN | 0 S | 0.00271266 | ||||
Migrate | 5097118 | 2 days ago | IN | 0 S | 0.00091954 | ||||
Migrate | 5097055 | 2 days ago | IN | 0 S | 0.00091954 | ||||
Migrate | 5096986 | 2 days ago | IN | 0 S | 0.00091954 | ||||
Migrate | 5096923 | 2 days ago | IN | 0 S | 0.00574794 | ||||
Create Moonshot ... | 5091454 | 2 days ago | IN | 0 S | 0.00271266 | ||||
Buy Exact In | 5090500 | 2 days ago | IN | 1,370 S | 0.00101046 | ||||
Buy Exact In | 5090293 | 2 days ago | IN | 1,377 S | 0.00098449 | ||||
Buy Exact In | 5090274 | 2 days ago | IN | 1,370 S | 0.00098449 | ||||
Sell Exact Out | 5090007 | 2 days ago | IN | 0 S | 0.00092919 | ||||
Create Moonshot ... | 5089923 | 2 days ago | IN | 0.00045735 S | 0.00278424 | ||||
Sell Exact Out | 5089851 | 2 days ago | IN | 0 S | 0.00092919 | ||||
Sell Exact Out | 5089843 | 2 days ago | IN | 0 S | 0.00092919 | ||||
Sell Exact Out | 5089658 | 2 days ago | IN | 0 S | 0.00092919 | ||||
Create Moonshot ... | 5089340 | 2 days ago | IN | 4.57790368 S | 0.00280124 |
Latest 25 internal transactions (View All)
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Contract Source Code Verified (Exact Match)
Contract Name:
MoonshotFactory
Compiler Version
v0.8.23+commit.f704f362
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.23; import {MoonshotToken} from "./MoonshotToken.sol"; import {IMoonshotFactory} from "./interfaces/IMoonshotFactory.sol"; import {IMoonshotToken} from "./interfaces/IMoonshotToken.sol"; import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol"; import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import {SignatureChecker} from "@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol"; import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol"; contract MoonshotFactory is IMoonshotFactory, Ownable, ReentrancyGuard { uint256 public totalSupply; uint256 public virtualTokenReserves; uint256 public virtualCollateralReserves; uint256 public feeBasisPoints; uint256 public mcUpperLimit; uint256 public mcLowerLimit; uint256 public tokensMigrationThreshold; uint256 public migrationFeeFixed; uint256 public poolCreationFee; uint256 public dexFeeBasisPoints; address public dexTreasury; address public treasury; address public immutable ROUTER_02; address public signer; mapping(bytes32 => bool) public usedSignatures; mapping(address => bool) public readyForMigration; address[] public moonshotTokens; uint256 private constant MAX_BPS = 2_500; constructor( uint256 _totalSupply, uint256 _virtualTokenReserves, uint256 _virtualCollateralReserves, uint256 _feeBasisPoints, uint256 _dexFeeBasisPoints, uint256 _migrationFeeFixed, uint256 _poolCreationFee, uint256 _mcUpperLimit, uint256 _mcLowerLimit, uint256 _tokensMigrationThreshold, address _treasury, address _dexTreasury, address _solidlyRouter, address _signer ) Ownable(msg.sender) { _setConfig( _totalSupply, _virtualTokenReserves, _virtualCollateralReserves, _feeBasisPoints, _dexFeeBasisPoints, _migrationFeeFixed, _poolCreationFee, _mcUpperLimit, _mcLowerLimit, _tokensMigrationThreshold, _treasury, _dexTreasury, _signer ); ROUTER_02 = _solidlyRouter; } function setConfig( uint256 _totalSupply, uint256 _virtualTokenReserves, uint256 _virtualCollateralReserves, uint256 _feeBasisPoints, uint256 _dexFeeBasisPoints, uint256 _migrationFeeFixed, uint256 _poolCreationFee, uint256 _mcUpperLimit, uint256 _mcLowerLimit, uint256 _tokensMigrationThreshold, address _treasury, address _dexTreasury, address _signer ) external onlyOwner { _setConfig( _totalSupply, _virtualTokenReserves, _virtualCollateralReserves, _feeBasisPoints, _dexFeeBasisPoints, _migrationFeeFixed, _poolCreationFee, _mcUpperLimit, _mcLowerLimit, _tokensMigrationThreshold, _treasury, _dexTreasury, _signer ); } function createMoonshotToken( string memory _name, string memory _symbol, uint256 _nonce, bytes memory _signature ) external returns (address) { _checkSignatureAndStore(_name, _symbol, _nonce, _signature); MoonshotToken token = new MoonshotToken( IMoonshotToken.ConstructorParams( _name, _symbol, msg.sender, // creator totalSupply, virtualTokenReserves, virtualCollateralReserves, feeBasisPoints, dexFeeBasisPoints, migrationFeeFixed, poolCreationFee, mcLowerLimit, mcUpperLimit, tokensMigrationThreshold, treasury, ROUTER_02, dexTreasury ) ); moonshotTokens.push(address(token)); emit NewMoonshotToken(address(token), msg.sender, _signature); return address(token); } function createMoonshotTokenAndBuy( string memory _name, string memory _symbol, uint256 _nonce, uint256 _tokenAmountMin, bytes memory _signature ) external payable nonReentrant returns (address) { _checkSignatureAndStore(_name, _symbol, _nonce, _signature); MoonshotToken token = new MoonshotToken( IMoonshotToken.ConstructorParams( _name, _symbol, msg.sender, // creator totalSupply, virtualTokenReserves, virtualCollateralReserves, feeBasisPoints, dexFeeBasisPoints, migrationFeeFixed, poolCreationFee, mcLowerLimit, mcUpperLimit, tokensMigrationThreshold, treasury, ROUTER_02, dexTreasury ) ); (uint256 collateralToPayWithFee, uint256 helioFee, uint256 dexFee) = token.buyExactIn{value: msg.value}( _tokenAmountMin ); uint256 tokenAmount = token.balanceOf(address(this)); token.transfer(msg.sender, tokenAmount); moonshotTokens.push(address(token)); emit NewMoonshotTokenAndBuy( address(token), msg.sender, _signature, tokenAmount, collateralToPayWithFee, helioFee, dexFee, token.getCurveProgressBps() ); return address(token); } function buyExactOut( address _token, uint256 _tokenAmount, uint256 _maxCollateralAmount ) external payable nonReentrant { (uint256 collateralToPayWithFee, uint256 helioFee, uint256 dexFee) = IMoonshotToken(_token).buyExactOut{ value: msg.value }(_tokenAmount, _maxCollateralAmount); IMoonshotToken(_token).transfer(msg.sender, _tokenAmount); uint256 refund = address(this).balance; if (refund > 0) { (bool sent, ) = msg.sender.call{value: refund}(""); if (!sent) revert FailedToSendETH(); } emit BuyExactOut( msg.sender, _token, _tokenAmount, MoonshotToken(_token).totalSupply() - IMoonshotToken(_token).balanceOf(address(_token)), collateralToPayWithFee, refund, helioFee, dexFee, IMoonshotToken(_token).getCurveProgressBps() ); if (MoonshotToken(_token).tradingStopped()) { readyForMigration[_token] = true; emit MarketcapReached(_token); } } function buyExactIn(address _token, uint256 _amountOutMin) external payable nonReentrant { (uint256 collateralToPayWithFee, uint256 helioFee, uint256 dexFee) = IMoonshotToken(_token).buyExactIn{ value: msg.value }(_amountOutMin); uint256 tokensOut = IMoonshotToken(_token).balanceOf(address(this)); IMoonshotToken(_token).transfer(msg.sender, tokensOut); uint256 refund = address(this).balance; if (refund > 0) { (bool sent, ) = msg.sender.call{value: refund}(""); if (!sent) revert FailedToSendETH(); } emit BuyExactIn( msg.sender, _token, tokensOut, MoonshotToken(_token).totalSupply() - IMoonshotToken(_token).balanceOf(address(_token)), collateralToPayWithFee, helioFee, dexFee, IMoonshotToken(_token).getCurveProgressBps() ); if (MoonshotToken(_token).tradingStopped()) { readyForMigration[_token] = true; emit MarketcapReached(_token); } } function sellExactIn(address _token, uint256 _tokenAmount, uint256 _amountCollateralMin) external nonReentrant { MoonshotToken(_token).transferFrom(msg.sender, address(this), _tokenAmount); (uint256 collateralToReceiveMinusFee, uint256 helioFee, uint256 dexFee) = MoonshotToken(_token).sellExactIn( _tokenAmount, _amountCollateralMin ); (bool sent, ) = msg.sender.call{value: address(this).balance}(""); if (!sent) revert FailedToSendETH(); emit SellExactIn( msg.sender, _token, _tokenAmount, MoonshotToken(_token).totalSupply() - MoonshotToken(_token).balanceOf(address(_token)), collateralToReceiveMinusFee, helioFee, dexFee, IMoonshotToken(_token).getCurveProgressBps() ); } function sellExactOut(address _token, uint256 _tokenAmountMax, uint256 _amountCollateral) external nonReentrant { MoonshotToken(_token).transferFrom(msg.sender, address(this), _tokenAmountMax); (uint256 collateralToReceiveMinusFee, uint256 tokensOut, uint256 helioFee, uint256 dexFee) = MoonshotToken( _token ).sellExactOut(_tokenAmountMax, _amountCollateral); (bool sent, ) = msg.sender.call{value: address(this).balance}(""); if (!sent) revert FailedToSendETH(); emit SellExactOut( msg.sender, _token, tokensOut, MoonshotToken(_token).totalSupply() - MoonshotToken(_token).balanceOf(address(_token)), collateralToReceiveMinusFee, helioFee, dexFee, IMoonshotToken(_token).getCurveProgressBps() ); } function migrate(address _token) external { if (!readyForMigration[_token]) revert NotReadyForMigration(); (uint256 tokensToMigrate, uint256 tokensToBurn, uint256 collateralAmount, address pair) = MoonshotToken(_token) .migrate(); emit Migrated( _token, tokensToMigrate, tokensToBurn, collateralAmount, MoonshotToken(_token).fixedMigrationFee() + MoonshotToken(_token).poolCreationFee(), pair ); } function _setConfig( uint256 _totalSupply, uint256 _virtualTokenReserves, uint256 _virtualCollateralReserves, uint256 _feeBasisPoints, uint256 _dexFeeBasisPoints, uint256 _migrationFeeFixed, uint256 _poolCreationFee, uint256 _mcUpperLimit, uint256 _mcLowerLimit, uint256 _tokensMigrationThreshold, address _treasury, address _dexTreasury, address _signer ) internal { if (_totalSupply == 0) revert TotalSupplyZeroValue(); if (_virtualTokenReserves == 0) revert VirtualTokenReservesZeroValue(); if (_virtualCollateralReserves == 0) revert VirtualCollateralReservesZeroValue(); if (_mcLowerLimit == 0) revert McUpperLimitZeroValue(); if (_mcUpperLimit == 0) revert McLowerLimitZeroValue(); if (_tokensMigrationThreshold == 0) revert TokensMigrationThresholdZeroValue(); if (_treasury == address(0)) revert TreasuryZeroValue(); if (_dexTreasury == address(0)) revert DexTreasuryZeroValue(); if (_signer == address(0)) revert SignerZeroValue(); if (_mcLowerLimit >= _mcUpperLimit) revert McLowerLimitGreaterThanUpperLimit(); if (dexFeeBasisPoints >= 10_000) revert FeeBPSCheckFailed(); if (feeBasisPoints >= MAX_BPS) revert FeeBPSCheckFailed(); totalSupply = _totalSupply; virtualTokenReserves = _virtualTokenReserves; virtualCollateralReserves = _virtualCollateralReserves; feeBasisPoints = _feeBasisPoints; dexFeeBasisPoints = _dexFeeBasisPoints; migrationFeeFixed = _migrationFeeFixed; poolCreationFee = _poolCreationFee; mcUpperLimit = _mcUpperLimit; mcLowerLimit = _mcLowerLimit; tokensMigrationThreshold = _tokensMigrationThreshold; treasury = _treasury; dexTreasury = _dexTreasury; signer = _signer; emit SetConfig( totalSupply, virtualTokenReserves, virtualCollateralReserves, feeBasisPoints, dexFeeBasisPoints, migrationFeeFixed, poolCreationFee, mcUpperLimit, mcLowerLimit, tokensMigrationThreshold, treasury, dexTreasury, signer ); } function _checkSignatureAndStore( string memory _name, string memory _symbol, uint256 _nonce, bytes memory _signature ) internal { if (usedSignatures[keccak256(_signature)]) revert SignatureIsUsed(); bytes32 message = keccak256(abi.encodePacked(_name, _symbol, _nonce, address(this), block.chainid, msg.sender)); if (!SignatureChecker.isValidSignatureNow(signer, MessageHashUtils.toEthSignedMessageHash(message), _signature)) revert InvalidSignature(); usedSignatures[keccak256(_signature)] = true; } receive() external payable {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../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. * * The initial owner is set to the address provided by the deployer. 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; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @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 { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling 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 { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _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 // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol) pragma solidity ^0.8.20; /** * @dev Standard ERC20 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens. */ interface IERC20Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC20InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC20InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers. * @param spender Address that may be allowed to operate on tokens without being their owner. * @param allowance Amount of tokens a `spender` is allowed to operate with. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC20InvalidApprover(address approver); /** * @dev Indicates a failure with the `spender` to be approved. Used in approvals. * @param spender Address that may be allowed to operate on tokens without being their owner. */ error ERC20InvalidSpender(address spender); } /** * @dev Standard ERC721 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens. */ interface IERC721Errors { /** * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. * Used in balance queries. * @param owner Address of the current owner of a token. */ error ERC721InvalidOwner(address owner); /** * @dev Indicates a `tokenId` whose `owner` is the zero address. * @param tokenId Identifier number of a token. */ error ERC721NonexistentToken(uint256 tokenId); /** * @dev Indicates an error related to the ownership over a particular token. Used in transfers. * @param sender Address whose tokens are being transferred. * @param tokenId Identifier number of a token. * @param owner Address of the current owner of a token. */ error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC721InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC721InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param tokenId Identifier number of a token. */ error ERC721InsufficientApproval(address operator, uint256 tokenId); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC721InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC721InvalidOperator(address operator); } /** * @dev Standard ERC1155 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens. */ interface IERC1155Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. * @param tokenId Identifier number of a token. */ error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC1155InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC1155InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param owner Address of the current owner of a token. */ error ERC1155MissingApprovalForAll(address operator, address owner); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC1155InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC1155InvalidOperator(address operator); /** * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation. * Used in batch transfers. * @param idsLength Length of the array of token identifiers * @param valuesLength Length of the array of token amounts */ error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1271.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC1271 standard signature validation method for * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271]. */ interface IERC1271 { /** * @dev Should return whether the signature provided is valid for the provided data * @param hash Hash of the data to be signed * @param signature Signature byte array associated with _data */ function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "./IERC20.sol"; import {IERC20Metadata} from "./extensions/IERC20Metadata.sol"; import {Context} from "../../utils/Context.sol"; import {IERC20Errors} from "../../interfaces/draft-IERC6093.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}. * * 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]. * * The default value of {decimals} is 18. To change this, you should override * this function so it returns a different value. * * 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. */ abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors { mapping(address account => uint256) private _balances; mapping(address account => mapping(address spender => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * 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 returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual 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 default value returned by this function, unless * it's 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 returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual 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 `value`. */ function transfer(address to, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _transfer(owner, to, value); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `value` 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 value) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, value); 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 `value`. * - the caller must have allowance for ``from``'s tokens of at least * `value`. */ function transferFrom(address from, address to, uint256 value) public virtual returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, value); _transfer(from, to, value); return true; } /** * @dev Moves a `value` 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. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _transfer(address from, address to, uint256 value) internal { if (from == address(0)) { revert ERC20InvalidSender(address(0)); } if (to == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(from, to, value); } /** * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from` * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding * this function. * * Emits a {Transfer} event. */ function _update(address from, address to, uint256 value) internal virtual { if (from == address(0)) { // Overflow check required: The rest of the code assumes that totalSupply never overflows _totalSupply += value; } else { uint256 fromBalance = _balances[from]; if (fromBalance < value) { revert ERC20InsufficientBalance(from, fromBalance, value); } unchecked { // Overflow not possible: value <= fromBalance <= totalSupply. _balances[from] = fromBalance - value; } } if (to == address(0)) { unchecked { // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply. _totalSupply -= value; } } else { unchecked { // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256. _balances[to] += value; } } emit Transfer(from, to, value); } /** * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0). * Relies on the `_update` mechanism * * Emits a {Transfer} event with `from` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _mint(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(address(0), account, value); } /** * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply. * Relies on the `_update` mechanism. * * Emits a {Transfer} event with `to` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead */ function _burn(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidSender(address(0)); } _update(account, address(0), value); } /** * @dev Sets `value` 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. * * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument. */ function _approve(address owner, address spender, uint256 value) internal { _approve(owner, spender, value, true); } /** * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event. * * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any * `Approval` event during `transferFrom` operations. * * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to * true using the following override: * ``` * function _approve(address owner, address spender, uint256 value, bool) internal virtual override { * super._approve(owner, spender, value, true); * } * ``` * * Requirements are the same as {_approve}. */ function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual { if (owner == address(0)) { revert ERC20InvalidApprover(address(0)); } if (spender == address(0)) { revert ERC20InvalidSpender(address(0)); } _allowances[owner][spender] = value; if (emitEvent) { emit Approval(owner, spender, value); } } /** * @dev Updates `owner` s allowance for `spender` based on spent `value`. * * Does not update the allowance value in case of infinite allowance. * Revert if not enough allowance is available. * * Does not emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 value) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { if (currentAllowance < value) { revert ERC20InsufficientAllowance(spender, currentAllowance, value); } unchecked { _approve(owner, spender, currentAllowance - value, false); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Burnable.sol) pragma solidity ^0.8.20; import {ERC20} from "../ERC20.sol"; import {Context} from "../../../utils/Context.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, ERC20 { /** * @dev Destroys a `value` amount of tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 value) public virtual { _burn(_msgSender(), value); } /** * @dev Destroys a `value` amount of 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 * `value`. */ function burnFrom(address account, uint256 value) public virtual { _spendAllowance(account, _msgSender(), value); _burn(account, value); } }
// 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (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; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.20; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS } /** * @dev The signature derives the `address(0)`. */ error ECDSAInvalidSignature(); /** * @dev The signature has an invalid length. */ error ECDSAInvalidSignatureLength(uint256 length); /** * @dev The signature has an S value that is in the upper half order. */ error ECDSAInvalidSignatureS(bytes32 s); /** * @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not * return address(0) without also returning an error description. Errors are documented using an enum (error type) * and a bytes32 providing additional information about the error. * * If no error is returned, then the address can be used for verification purposes. * * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError, bytes32) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length)); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM precompile allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, signature); _throwError(error, errorArg); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] */ function tryRecover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address, RecoverError, bytes32) { unchecked { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); // We do not check for an overflow here since the shift operation results in 0 or 1. uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. */ function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, r, vs); _throwError(error, errorArg); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError, bytes32) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS, s); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature, bytes32(0)); } return (signer, RecoverError.NoError, bytes32(0)); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { (address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, v, r, s); _throwError(error, errorArg); return recovered; } /** * @dev Optionally reverts with the corresponding custom error according to the `error` argument provided. */ function _throwError(RecoverError error, bytes32 errorArg) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert ECDSAInvalidSignature(); } else if (error == RecoverError.InvalidSignatureLength) { revert ECDSAInvalidSignatureLength(uint256(errorArg)); } else if (error == RecoverError.InvalidSignatureS) { revert ECDSAInvalidSignatureS(errorArg); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MessageHashUtils.sol) pragma solidity ^0.8.20; import {Strings} from "../Strings.sol"; /** * @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing. * * The library provides methods for generating a hash of a message that conforms to the * https://eips.ethereum.org/EIPS/eip-191[EIP 191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712] * specifications. */ library MessageHashUtils { /** * @dev Returns the keccak256 digest of an EIP-191 signed data with version * `0x45` (`personal_sign` messages). * * The digest is calculated by prefixing a bytes32 `messageHash` with * `"\x19Ethereum Signed Message:\n32"` and hashing the result. It corresponds with the * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method. * * NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with * keccak256, although any bytes32 value can be safely used because the final digest will * be re-hashed. * * See {ECDSA-recover}. */ function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) { /// @solidity memory-safe-assembly assembly { mstore(0x00, "\x19Ethereum Signed Message:\n32") // 32 is the bytes-length of messageHash mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20) } } /** * @dev Returns the keccak256 digest of an EIP-191 signed data with version * `0x45` (`personal_sign` messages). * * The digest is calculated by prefixing an arbitrary `message` with * `"\x19Ethereum Signed Message:\n" + len(message)` and hashing the result. It corresponds with the * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method. * * See {ECDSA-recover}. */ function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) { return keccak256(bytes.concat("\x19Ethereum Signed Message:\n", bytes(Strings.toString(message.length)), message)); } /** * @dev Returns the keccak256 digest of an EIP-191 signed data with version * `0x00` (data with intended validator). * * The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended * `validator` address. Then hashing the result. * * See {ECDSA-recover}. */ function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) { return keccak256(abi.encodePacked(hex"19_00", validator, data)); } /** * @dev Returns the keccak256 digest of an EIP-712 typed data (EIP-191 version `0x01`). * * The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with * `\x19\x01` and hashing the result. It corresponds to the hash signed by the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712. * * See {ECDSA-recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, hex"19_01") mstore(add(ptr, 0x02), domainSeparator) mstore(add(ptr, 0x22), structHash) digest := keccak256(ptr, 0x42) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/SignatureChecker.sol) pragma solidity ^0.8.20; import {ECDSA} from "./ECDSA.sol"; import {IERC1271} from "../../interfaces/IERC1271.sol"; /** * @dev Signature verification helper that can be used instead of `ECDSA.recover` to seamlessly support both ECDSA * signatures from externally owned accounts (EOAs) as well as ERC1271 signatures from smart contract wallets like * Argent and Safe Wallet (previously Gnosis Safe). */ library SignatureChecker { /** * @dev Checks if a signature is valid for a given signer and data hash. If the signer is a smart contract, the * signature is validated against that smart contract using ERC1271, otherwise it's validated using `ECDSA.recover`. * * NOTE: Unlike ECDSA signatures, contract signatures are revocable, and the outcome of this function can thus * change through time. It could return true at block N and false at block N+1 (or the opposite). */ function isValidSignatureNow(address signer, bytes32 hash, bytes memory signature) internal view returns (bool) { (address recovered, ECDSA.RecoverError error, ) = ECDSA.tryRecover(hash, signature); return (error == ECDSA.RecoverError.NoError && recovered == signer) || isValidERC1271SignatureNow(signer, hash, signature); } /** * @dev Checks if a signature is valid for a given signer and data hash. The signature is validated * against the signer smart contract using ERC1271. * * NOTE: Unlike ECDSA signatures, contract signatures are revocable, and the outcome of this function can thus * change through time. It could return true at block N and false at block N+1 (or the opposite). */ function isValidERC1271SignatureNow( address signer, bytes32 hash, bytes memory signature ) internal view returns (bool) { (bool success, bytes memory result) = signer.staticcall( abi.encodeCall(IERC1271.isValidSignature, (hash, signature)) ); return (success && result.length >= 32 && abi.decode(result, (bytes32)) == bytes32(IERC1271.isValidSignature.selector)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol) pragma solidity ^0.8.20; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Muldiv operation overflow. */ error MathOverflowedMulDiv(); enum Rounding { Floor, // Toward negative infinity Ceil, // Toward positive infinity Trunc, // Toward zero Expand // Away from zero } /** * @dev Returns the addition of two unsigned integers, with an overflow flag. */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the subtraction of two unsigned integers, with an overflow flag. */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds towards infinity instead * of rounding towards zero. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { if (b == 0) { // Guarantee the same behavior as in a regular Solidity division. return a / b; } // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or * denominator == 0. * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by * Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0 = x * y; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. if (denominator <= prod1) { revert MathOverflowedMulDiv(); } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. // Always >= 1. See https://cs.stackexchange.com/q/138556/92363. uint256 twos = denominator & (0 - denominator); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also // works in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded * towards zero. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0); } } /** * @dev Return the log in base 256 of a positive value rounded towards zero. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0); } } /** * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers. */ function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) { return uint8(rounding) % 2 == 1; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol) pragma solidity ^0.8.20; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return a > b ? a : b; } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return a < b ? a : b; } /** * @dev Returns the average of two signed numbers without overflow. * The result is rounded towards zero. */ function average(int256 a, int256 b) internal pure returns (int256) { // Formula from the book "Hacker's Delight" int256 x = (a & b) + ((a ^ b) >> 1); return x + (int256(uint256(x) >> 255) & (a ^ b)); } /** * @dev Returns the absolute unsigned value of a signed value. */ function abs(int256 n) internal pure returns (uint256) { unchecked { // must be unchecked in order to support `n = type(int256).min` return uint256(n >= 0 ? n : -n); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol) pragma solidity ^0.8.20; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant NOT_ENTERED = 1; uint256 private constant ENTERED = 2; uint256 private _status; /** * @dev Unauthorized reentrant call. */ error ReentrancyGuardReentrantCall(); constructor() { _status = NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be NOT_ENTERED if (_status == ENTERED) { revert ReentrancyGuardReentrantCall(); } // Any calls to nonReentrant after this point will fail _status = ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol) pragma solidity ^0.8.20; import {Math} from "./math/Math.sol"; import {SignedMath} from "./math/SignedMath.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant HEX_DIGITS = "0123456789abcdef"; uint8 private constant ADDRESS_LENGTH = 20; /** * @dev The `value` string doesn't fit in the specified `length`. */ error StringsInsufficientHexLength(uint256 value, uint256 length); /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), HEX_DIGITS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `int256` to its ASCII `string` decimal representation. */ function toStringSigned(int256 value) internal pure returns (string memory) { return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value))); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { uint256 localValue = value; bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = HEX_DIGITS[localValue & 0xf]; localValue >>= 4; } if (localValue != 0) { revert StringsInsufficientHexLength(value, length); } return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal * representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH); } /** * @dev Returns true if the two strings are equal. */ function equal(string memory a, string memory b) internal pure returns (bool) { return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b)); } }
// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.23; interface IBaseV1Factory { function allPairsLength() external view returns (uint); function isPair(address pair) external view returns (bool); function pairCodeHash() external pure returns (bytes32); function getPair(address tokenA, address token, bool stable) external view returns (address); function createPair(address tokenA, address tokenB, bool stable) external returns (address pair); }
// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.23; interface IMoonshotFactory { error InvalidSignature(); error SignatureIsUsed(); error FailedToSendETH(); error NotReadyForMigration(); error TotalSupplyZeroValue(); error VirtualTokenReservesZeroValue(); error VirtualCollateralReservesZeroValue(); error McUpperLimitZeroValue(); error McLowerLimitZeroValue(); error TokensMigrationThresholdZeroValue(); error TreasuryZeroValue(); error DexTreasuryZeroValue(); error SignerZeroValue(); error McLowerLimitGreaterThanUpperLimit(); error FeeBPSCheckFailed(); event SetConfig( uint256 totalSupply, uint256 virtualTokenReserves, uint256 virtualCollateralReserves, uint256 feeBasisPoints, uint256 dexFeeBasisPoints, uint256 migrationFeeFixed, uint256 poolCreationFee, uint256 mcUpperLimit, uint256 mcLowerLimit, uint256 tokensMigrationThreshold, address treasury, address dexTreasury, address signer ); event NewMoonshotToken(address addr, address creator, bytes signature); event NewMoonshotTokenAndBuy( address addr, address creator, bytes signature, uint256 tokenAmount, uint256 collateralAmount, uint256 fee, uint256 dexFee, uint256 curveProgressBps ); event MarketcapReached(address token); event Migrated( address token, uint256 tokensToMigrate, uint256 tokensToBurn, uint256 collateralToMigrate, uint256 migrationFee, address pair ); event BuyExactOut( address indexed buyer, address indexed token, uint256 tokenAmount, uint256 curvePositionAfterTrade, uint256 collateralAmount, uint256 refund, uint256 fee, uint256 dexFee, uint256 curveProgressBps ); event BuyExactIn( address indexed buyer, address indexed token, uint256 tokenAmount, uint256 curvePositionAfterTrade, uint256 collateralAmount, uint256 fee, uint256 dexFee, uint256 curveProgressBps ); event SellExactIn( address indexed seller, address indexed token, uint256 tokenAmount, uint256 curvePositionAfterTrade, uint256 collateralAmount, uint256 fee, uint256 dexFee, uint256 curveProgressBps ); event SellExactOut( address indexed seller, address indexed token, uint256 tokenAmount, uint256 curvePositionAfterTrade, uint256 collateralAmount, uint256 fee, uint256 dexFee, uint256 curveProgressBps ); function buyExactOut(address _token, uint256 _tokenAmount, uint256 _maxCollateralAmount) external payable; function buyExactIn(address _token, uint256 _amountOutMin) external payable; function sellExactIn(address _token, uint256 _tokenAmount, uint256 _amountCollateralMin) external; function sellExactOut(address _token, uint256 _tokenAmountMax, uint256 _amountCollateral) external; function setConfig( uint256 _totalSupply, uint256 _virtualTokenReserves, uint256 _virtualCollateralReserves, uint256 _feeBasisPoints, uint256 _dexFeeBasisPoints, uint256 _migrationFeeFixed, uint256 _poolCreationFee, uint256 _mcUpperLimit, uint256 _mcLowerLimit, uint256 _tokensMigrationThreshold, address _treasury, address _dexTreasury, address _signer ) external; function createMoonshotToken( string memory _name, string memory _symbol, uint256 _nonce, bytes memory _signature ) external returns (address); function createMoonshotTokenAndBuy( string memory _name, string memory _symbol, uint256 _nonce, uint256 _tokenAmountMin, bytes memory _signature ) external payable returns (address); }
// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.23; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IMoonshotToken is IERC20 { enum CurveType { ConstantProductV1 } struct ConstructorParams { string name; string symbol; address creator; uint256 totalSupply; uint256 virtualTokenReserves; uint256 virtualCollateralReserves; uint256 feeBasisPoints; uint256 dexFeeBasisPoints; uint256 migrationFeeFixed; uint256 poolCreationFee; uint256 mcLowerLimit; uint256 mcUpperLimit; uint256 tokensMigrationThreshold; address treasury; address solidlyRouter; address dexTreasury; } error NotEnoughETHReserves(); error InsufficientTokenReserves(); error FailedToSendETH(); error NotEnoughtETHToBuyTokens(); error SlippageCheckFailed(); error MarketcapThresholdReached(); error SendingToPairIsNotAllowedBeforeMigration(); error PairNotCreated(); error TradingStopped(); error OnlyFactory(); function buyExactOut( uint256 _tokenAmount, uint256 _maxCollateralAmount ) external payable returns (uint256 collateralToPayWithFee, uint256 helioFee, uint256 dexFee); function buyExactIn( uint256 _amountOutMin ) external payable returns (uint256 collateralToPayWithFee, uint256 helioFee, uint256 dexFee); function sellExactIn( uint256 _tokenAmount, uint256 _amountOutMin ) external payable returns (uint256 collateralToReceiveMinusFee, uint256 helioFee, uint256 dexFee); function sellExactOut( uint256 _tokenAmountMax, uint256 _amountCollateral ) external payable returns (uint256 collateralToReceiveMinusFee, uint256 tokensOut, uint256 helioFee, uint256 dexFee); function getAmountOutAndFee( uint256 _amountIn, uint256 _reserveIn, uint256 _reserveOut, bool _paymentTokenIsIn ) external view returns (uint256 amountOut, uint256 fee); function getAmountInAndFee( uint256 _amountOut, uint256 _reserveIn, uint256 _reserveOut, bool _paymentTokenIsOut ) external view returns (uint256 amountIn, uint256 fee); function migrate() external returns (uint256 tokensToMigrate, uint256 tokensToBurn, uint256 collateralAmount, address pair); function getCurveProgressBps() external view returns (uint256); function getMarketCap() external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.23; interface IRouter02 { struct Route { address from; address to; bool stable; } function factory() external view returns (address); function weth() external view returns (address); function pairFor(address tokenA, address tokenB, bool stable) external view returns (address pair); function getReserves( address tokenA, address tokenB, bool stable ) external view returns (uint reserveA, uint reserveB); function getAmountOut( uint amountIn, address tokenIn, address tokenOut ) external view returns (uint amount, bool stable); function getAmountOut( uint amountIn, address tokenIn, address tokenOut, bool stable ) external view returns (uint amount); function getAmountsOut(uint amountIn, Route[] memory routes) external view returns (uint[] memory amounts); function isPair(address pair) external view returns (bool); function quoteAddLiquidity( address tokenA, address tokenB, bool stable, uint amountADesired, uint amountBDesired ) external view returns (uint amountA, uint amountB, uint liquidity); function quoteRemoveLiquidity( address tokenA, address tokenB, bool stable, uint liquidity ) external view returns (uint amountA, uint amountB); function addLiquidity( address tokenA, address tokenB, bool stable, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, bool stable, 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, bool stable, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, bool stable, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, bool stable, 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, bool stable, 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 removeLiquidityETHSupportingFeeOnTransferTokens( address token, bool stable, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, bool stable, 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 swapExactTokensForTokensSimple( uint amountIn, uint amountOutMin, address tokenFrom, address tokenTo, bool stable, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, Route[] calldata routes, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens( uint amountOutMin, Route[] calldata routes, address to, uint deadline ) external payable returns (uint[] memory amounts); function swapExactTokensForETH( uint amountIn, uint amountOutMin, Route[] calldata routes, address to, uint deadline ) external returns (uint[] memory amounts); function UNSAFE_swapExactTokensForTokens( uint[] memory amounts, Route[] calldata routes, address to, uint deadline ) external returns (uint[] memory); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, Route[] calldata routes, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, Route[] calldata routes, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, Route[] calldata routes, address to, uint deadline ) external; }
// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.23; import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import {ERC20Burnable} from "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol"; import {IRouter02} from "./interfaces/IRouter02.sol"; import {IBaseV1Factory} from "./interfaces/IBaseV1Factory.sol"; import {IMoonshotToken} from "./interfaces/IMoonshotToken.sol"; contract MoonshotToken is ERC20Burnable, IMoonshotToken, ReentrancyGuard { CurveType public constant curveType = CurveType.ConstantProductV1; uint256 public initalTokenSupply; uint256 public virtualTokenReserves; uint256 public virtualCollateralReserves; uint256 public immutable virtualCollateralReservesInitial; uint256 public immutable feeBPS; uint256 public immutable dexFeeBPS; uint256 public immutable mcLowerLimit; uint256 public immutable mcUpperLimit; uint256 public immutable tokensMigrationThreshold; uint256 public immutable fixedMigrationFee; uint256 public immutable poolCreationFee; address public immutable creator; address public immutable treasury; address public immutable dexTreasury; address public immutable factory; bool public tradingStopped; bool public sendingToPairNotAllowed = true; uint256 public constant MAX_BPS = 10_000; IRouter02 public immutable solidlyRouter; modifier buyChecks() { if (tradingStopped) revert TradingStopped(); _; _checkMcLower(); _checkMcUpperLimit(); } modifier sellChecks() { if (tradingStopped) revert TradingStopped(); _; } modifier onlyFactory() { if (msg.sender != factory) revert OnlyFactory(); _; } constructor(ConstructorParams memory _params) ERC20(_params.name, _params.symbol) { _mint(address(this), _params.totalSupply); initalTokenSupply = _params.totalSupply; virtualCollateralReserves = _params.virtualCollateralReserves; virtualCollateralReservesInitial = _params.virtualCollateralReserves; virtualTokenReserves = _params.virtualTokenReserves; creator = _params.creator; feeBPS = _params.feeBasisPoints; dexFeeBPS = _params.dexFeeBasisPoints; treasury = _params.treasury; dexTreasury = _params.dexTreasury; fixedMigrationFee = _params.migrationFeeFixed; poolCreationFee = _params.poolCreationFee; mcLowerLimit = _params.mcLowerLimit; mcUpperLimit = _params.mcUpperLimit; tokensMigrationThreshold = _params.tokensMigrationThreshold; solidlyRouter = IRouter02(_params.solidlyRouter); factory = msg.sender; } /** * @dev Buys tokenAmount of tokens for eth, refunding excess eth * * @param _tokenAmount - amount of tokens to buy * @param _maxCollateralAmount - maximum amount of collateral a caller is willing to spend */ function buyExactOut( uint256 _tokenAmount, uint256 _maxCollateralAmount ) external payable onlyFactory buyChecks returns (uint256 collateralToPayWithFee, uint256 helioFee, uint256 dexFee) { if (balanceOf(address(this)) <= _tokenAmount) revert InsufficientTokenReserves(); uint256 collateralToSpend = (_tokenAmount * virtualCollateralReserves) / (virtualTokenReserves - _tokenAmount); (helioFee, dexFee) = _calculateFee(collateralToSpend); collateralToPayWithFee = collateralToSpend + helioFee + dexFee; if (collateralToPayWithFee > _maxCollateralAmount) revert SlippageCheckFailed(); _transferCollateral(treasury, helioFee); _transferCollateral(dexTreasury, dexFee); virtualTokenReserves -= _tokenAmount; virtualCollateralReserves += collateralToSpend; uint256 refund; if (msg.value > collateralToPayWithFee) { // refund the user refund = msg.value - collateralToPayWithFee; _transferCollateral(msg.sender, refund); } else if (msg.value < collateralToPayWithFee) { revert NotEnoughtETHToBuyTokens(); } _transfer(address(this), msg.sender, _tokenAmount); } /** * @dev Buys tokens specifing minimal amount of tokens a caller gets * * @param _amountOutMin - minimal amount of tokens a caller will get */ function buyExactIn( uint256 _amountOutMin ) external payable onlyFactory buyChecks returns (uint256 collateralToPayWithFee, uint256 helioFee, uint256 dexFee) { if (balanceOf(address(this)) <= _amountOutMin) revert InsufficientTokenReserves(); collateralToPayWithFee = msg.value; (helioFee, dexFee) = _calculateFee(collateralToPayWithFee); uint256 collateralToSpendMinusFee = collateralToPayWithFee - helioFee - dexFee; _transferCollateral(treasury, helioFee); _transferCollateral(dexTreasury, dexFee); uint256 tokensOut = (collateralToSpendMinusFee * virtualTokenReserves) / (virtualCollateralReserves + collateralToSpendMinusFee); if (tokensOut < _amountOutMin) revert SlippageCheckFailed(); virtualTokenReserves -= tokensOut; virtualCollateralReserves += collateralToSpendMinusFee; _transfer(address(this), msg.sender, tokensOut); } /** * @dev Sells given amount of tokens for eth * * @param _tokenAmount - amount of tokens a caller wants to sell * @param _amountCollateralMin - minimum amount of collateral a seller will get */ function sellExactIn( uint256 _tokenAmount, uint256 _amountCollateralMin ) external payable onlyFactory sellChecks returns (uint256 collateralToReceiveMinusFee, uint256 helioFee, uint256 dexFee) { uint256 collaterallToReceive = (_tokenAmount * virtualCollateralReserves) / (virtualTokenReserves + _tokenAmount); (helioFee, dexFee) = _calculateFee(collaterallToReceive); collateralToReceiveMinusFee = collaterallToReceive - helioFee - dexFee; _transferCollateral(treasury, helioFee); _transferCollateral(dexTreasury, dexFee); if (collateralToReceiveMinusFee < _amountCollateralMin) revert SlippageCheckFailed(); virtualTokenReserves += _tokenAmount; virtualCollateralReserves -= collaterallToReceive; _transferCollateral(msg.sender, collateralToReceiveMinusFee); _transfer(msg.sender, address(this), _tokenAmount); } /** * @dev Sells given amount of tokens for eth * * @param _tokenAmountMax - max amount of tokens a caller wants to sell */ function sellExactOut( uint256 _tokenAmountMax, uint256 _amountCollateral ) external payable onlyFactory sellChecks returns (uint256 collateralToReceiveMinusFee, uint256 tokensOut, uint256 helioFee, uint256 dexFee) { (helioFee, dexFee) = _calculateFee(_amountCollateral); collateralToReceiveMinusFee = _amountCollateral - helioFee - dexFee; _transferCollateral(treasury, helioFee); _transferCollateral(dexTreasury, dexFee); tokensOut = (_amountCollateral * virtualTokenReserves) / (virtualCollateralReserves - _amountCollateral); if (tokensOut > _tokenAmountMax) revert SlippageCheckFailed(); _transfer(msg.sender, address(this), tokensOut); virtualTokenReserves += tokensOut; virtualCollateralReserves -= _amountCollateral; _transferCollateral(msg.sender, collateralToReceiveMinusFee); } /** * @dev Calculates amountOut for a given amountIn * * @param _amountIn - amount in which will be transfered to the contract * @param _reserveIn - reserve in * @param _reserveOut - reserve out * @param _paymentTokenIsIn - if token in is a collateral token */ function getAmountOutAndFee( uint256 _amountIn, uint256 _reserveIn, uint256 _reserveOut, bool _paymentTokenIsIn ) external view returns (uint256 amountOut, uint256 fee) { if (_paymentTokenIsIn) { (uint256 helioFee, uint256 dexFee) = _calculateFee(_amountIn); fee = helioFee + dexFee; amountOut = (_amountIn * _reserveOut) / (_reserveIn + _amountIn); } else { amountOut = (_amountIn * _reserveOut) / (_reserveIn + _amountIn); (uint256 helioFee, uint256 dexFee) = _calculateFee(amountOut); fee = helioFee + dexFee; } } /** * @dev Calculates amountIn for a given amountOut * * @param _amountOut - amount out which will be transfered from the contract * @param _reserveIn - reserve in * @param _reserveOut - reserve out * @param _paymentTokenIsOut - if token out is a payment token */ function getAmountInAndFee( uint256 _amountOut, uint256 _reserveIn, uint256 _reserveOut, bool _paymentTokenIsOut ) external view returns (uint256 amountIn, uint256 fee) { if (_paymentTokenIsOut) { (uint256 helioFee, uint256 dexFee) = _calculateFee(_amountOut); fee = helioFee + dexFee; amountIn = (_amountOut * _reserveIn) / (_reserveOut - _amountOut); } else { amountIn = (_amountOut * _reserveIn) / (_reserveOut - _amountOut); (uint256 helioFee, uint256 dexFee) = _calculateFee(amountIn); fee = helioFee + dexFee; } } /** * @dev migrates tokens and collateral to uniswap-v2 and burns LP tokens */ function migrate() external onlyFactory returns (uint256 tokensToMigrate, uint256 tokensToBurn, uint256 collateralAmount, address pair) { sendingToPairNotAllowed = false; uint256 tokensRemaining = balanceOf(address(this)); this.approve(address(solidlyRouter), tokensRemaining); tokensToMigrate = _tokensToMigrate(); tokensToBurn = tokensRemaining - tokensToMigrate; _burn(address(this), tokensToBurn); (uint256 treasuryFee, uint256 dexFee) = _splitFee(fixedMigrationFee); _transferCollateral(treasury, treasuryFee + poolCreationFee); _transferCollateral(dexTreasury, dexFee); collateralAmount = virtualCollateralReserves - virtualCollateralReservesInitial - treasuryFee - dexFee - poolCreationFee; (, , uint256 liquidity) = solidlyRouter.addLiquidityETH{value: collateralAmount}( address(this), false, tokensToMigrate, tokensToMigrate, collateralAmount, address(this), block.timestamp + 120 // 2 minutes ); pair = IBaseV1Factory(solidlyRouter.factory()).getPair(address(this), solidlyRouter.weth(), false); if (pair == address(0)) revert PairNotCreated(); if (address(this).balance > 0) { _transferCollateral(treasury, address(this).balance); } IERC20(pair).transfer(address(0), liquidity); } function getMarketCap() public view returns (uint256) { uint256 mc = (virtualCollateralReserves * 10 ** 18 * totalSupply()) / virtualTokenReserves; return mc / 10 ** 18; } function getCurveProgressBps() external view returns (uint256) { uint256 progress = ((initalTokenSupply - balanceOf(address(this))) * MAX_BPS) / tokensMigrationThreshold; return progress < 100 ? 100 : (progress > MAX_BPS ? MAX_BPS : progress); } function transfer(address _to, uint256 _value) public override(ERC20, IERC20) returns (bool) { if (sendingToPairNotAllowed) { if (IBaseV1Factory(solidlyRouter.factory()).isPair(_to)) revert SendingToPairIsNotAllowedBeforeMigration(); } return super.transfer(_to, _value); } function transferFrom(address from, address to, uint256 amount) public override(ERC20, IERC20) returns (bool) { if (sendingToPairNotAllowed) { if (IBaseV1Factory(solidlyRouter.factory()).isPair(to)) revert SendingToPairIsNotAllowedBeforeMigration(); } return super.transferFrom(from, to, amount); } function _tokensToMigrate() internal view returns (uint256) { uint256 collateralDeductedFee = address(this).balance - fixedMigrationFee - poolCreationFee; return (virtualTokenReserves * collateralDeductedFee) / virtualCollateralReserves; } function _calculateFee(uint256 _amount) internal view returns (uint256 treasuryFee, uint256 dexFee) { treasuryFee = (_amount * feeBPS) / MAX_BPS; dexFee = (treasuryFee * dexFeeBPS) / MAX_BPS; treasuryFee -= dexFee; } function _splitFee(uint256 _feeAmount) internal view returns (uint256 treasuryFee, uint256 dexFee) { dexFee = (_feeAmount * dexFeeBPS) / MAX_BPS; treasuryFee = _feeAmount - dexFee; } function _transferCollateral(address _to, uint256 _amount) internal { (bool sent, ) = _to.call{value: _amount}(""); if (!sent) revert FailedToSendETH(); } function _checkMcUpperLimit() internal view { uint256 mc = getMarketCap(); if (mc > mcUpperLimit) revert MarketcapThresholdReached(); } function _checkMcLower() internal { uint256 mc = getMarketCap(); if (mc > mcLowerLimit) { tradingStopped = true; } } }
{ "optimizer": { "enabled": true, "runs": 200 }, "viaIR": true, "evmVersion": "paris", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : _totalSupply (uint256): 1000000000000000000000000000
Arg [1] : _virtualTokenReserves (uint256): 1060000000000000000000000000
Arg [2] : _virtualCollateralReserves (uint256): 4800000000000000000000
Arg [3] : _feeBasisPoints (uint256): 100
Arg [4] : _dexFeeBasisPoints (uint256): 6000
Arg [5] : _migrationFeeFixed (uint256): 300000000000000000000
Arg [6] : _poolCreationFee (uint256): 100000000000000000000
Arg [7] : _mcUpperLimit (uint256): 80000000000000000000000
Arg [8] : _mcLowerLimit (uint256): 7500000000000000000000
Arg [9] : _tokensMigrationThreshold (uint256): 236349588721039974736266667
Arg [10] : _treasury (address): 0x56C4f0504f577a283073AB780b6850feC4121389
Arg [11] : _dexTreasury (address): 0x377Cee6040C7300c6B31AB0f17d3a6e5d8059032
Arg [12] : _solidlyRouter (address): 0x9f3A7410229510E45eCED62db58Ce4fB4A3E1590
Arg [13] : _signer (address): 0xEF4d642140B89FC0Eaac3D3DfFF0632E4469aa12
-----Encoded View---------------
14 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000033b2e3c9fd0803ce8000000
Arg [1] : 0000000000000000000000000000000000000000036ccfbb244887eea4000000
Arg [2] : 0000000000000000000000000000000000000000000001043561a88293000000
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000064
Arg [4] : 0000000000000000000000000000000000000000000000000000000000001770
Arg [5] : 00000000000000000000000000000000000000000000001043561a8829300000
Arg [6] : 0000000000000000000000000000000000000000000000056bc75e2d63100000
Arg [7] : 0000000000000000000000000000000000000000000010f0cf064dd592000000
Arg [8] : 0000000000000000000000000000000000000000000001969368974c05b00000
Arg [9] : 000000000000000000000000000000000000000000c380f8e0bc1c7ed0d305ab
Arg [10] : 00000000000000000000000056c4f0504f577a283073ab780b6850fec4121389
Arg [11] : 000000000000000000000000377cee6040c7300c6b31ab0f17d3a6e5d8059032
Arg [12] : 0000000000000000000000009f3a7410229510e45eced62db58ce4fb4a3e1590
Arg [13] : 000000000000000000000000ef4d642140b89fc0eaac3d3dfff0632e4469aa12
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Multichain Portfolio | 30 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.