// File: contracts/IWETH9.sol
// contracts/IEIP4626.sol
// Teahouse Finance
pragma solidity ^0.8.0;
interface IWETH9 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function deposit() external payable;
function withdraw(uint wad) external;
}
// File: contracts/IEIP4626.sol
// contracts/IEIP4626.sol
// Teahouse Finance
pragma solidity ^0.8.0;
interface IEIP4626 {
function asset() external view returns (address assetTokenAddress);
function totalAssets() external view returns (uint256 totalManagedAssets);
function convertToShares(uint256 assets) external view returns (uint256 shares);
function convertToAssets(uint256 shares) external view returns (uint256 assets);
function maxDeposit(address receiver) external view returns (uint256 maxAssets);
function previewDeposit(uint256 assets) external view returns (uint256 shares);
function deposit(uint256 assets, address receiver) external returns (uint256 shares);
function maxMint(address receiver) external view returns (uint256 maxShares);
function previewMint(uint256 shares) external view returns (uint256 assets);
function mint(uint256 shares, address receiver) external returns (uint256 assets);
function maxWithdraw(address owner) external view returns (uint256 maxAssets);
function previewWithdraw(uint256 assets) external view returns (uint256 shares);
function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);
function maxRedeem(address owner) external view returns (uint256 maxShares);
function previewRedeem(uint256 shares) external view returns (uint256 assets);
function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets);
event Deposit(address indexed caller, address indexed owner, uint256 assets, uint256 shares);
event Withdraw(address indexed caller, address indexed receiver, address indexed owner, uint256 assets, uint256 shares);
}
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @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 amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` 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 amount) 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 `amount` 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 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` 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 amount
) external returns (bool);
}
// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
// File: @openzeppelin/contracts/security/ReentrancyGuard.sol
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @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;
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() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// File: @openzeppelin/contracts/utils/Context.sol
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @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;
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// File: @openzeppelin/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// File: @openzeppelin/contracts/utils/Address.sol
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: contracts/NFTVault.sol
// contracts/NFTVault.sol
// Teahouse Finance
pragma solidity ^0.8.0;
error ReceiverDoNotHasNFT();
error NFTNotEnabled();
error IncorrectReceiverAddress();
error IncorrectFundStage();
error ExceedMaxSupply();
error IncorrectFundValue();
/// @title A crowd funding vault for NFT investments
/// @author Teahouse Finance
contract NFTVault is Ownable, ReentrancyGuard, ERC20, IEIP4626 {
using SafeERC20 for IERC20;
/// @notice funding stages
/// @notice Funding: initial funding stage, available for depositing
/// @notice Onging: investment stage, not available for both depositing and withdrawal
/// @notice Closed: closed stage, available for withdrawal
enum FundStages { Funding, Ongoing, Closed }
address internal assetToken;
uint256 public initialPrice;
uint256 public priceDenominator;
uint256 public maxSupply;
uint256 internal nominalValue;
address[] public nftEnabled;
FundStages public fundStage;
event NFTEnabled(address indexed caller, address[] nfts);
event FundFunding(address indexed caller, uint256 initialPrice, uint256 priceDenominator, uint256 maxSupply);
event FundOngoing(address indexed caller, address indexed receiver, uint256 initialFundValue);
event FundClosed(address indexed caller, uint256 finalFundValue);
event FundValueChanged(address indexed caller, uint256 nominalValue);
/// @param _name name of the vault token
/// @param _symbol symbol of the vault token
/// @param _asset address of the asset token
/// @param _initialPrice initial price for each vault token in asset token
/// @param _priceDenominator price denominator (actual price = _initialPrice / _priceDenominator)
/// @param _maxSupply max supply of vault token
constructor(
string memory _name,
string memory _symbol,
address _asset,
uint256 _initialPrice,
uint256 _priceDenominator,
uint256 _maxSupply)
ERC20(_name, _symbol) {
assetToken = _asset;
initialPrice = _initialPrice;
priceDenominator = _priceDenominator;
maxSupply = _maxSupply;
fundStage = FundStages.Funding;
emit FundFunding(msg.sender, _initialPrice, _priceDenominator, _maxSupply);
}
/// @notice Set the list of NFTs for allowing depositing
/// @param _nfts addresses of the NFTs
function setEnabledNFTs(address[] memory _nfts) external onlyOwner {
nftEnabled = _nfts;
emit NFTEnabled(msg.sender, _nfts);
}
/// @notice Enter "Ongoing" stage.
/// @notice can only do so when in "Funding" stage
/// @notice will withdraw all asset tokens from the vault
/// @param _receiver address to receive funds
function enterOngoingStage(address _receiver) external nonReentrant onlyOwner {
if (_receiver == address(0)) revert IncorrectReceiverAddress();
if (fundStage != FundStages.Funding) revert IncorrectFundStage();
uint256 balance = IERC20(assetToken).balanceOf(address(this));
IERC20(assetToken).safeTransfer(_receiver, balance);
fundStage = FundStages.Ongoing;
emit FundOngoing(msg.sender, _receiver, nominalValue);
}
/// @notice Enter "Closed" stage.
/// @notice will transfer asset tokens to the vault
/// @param _finalFundValue final fund value in asset token
/// @notice if going directly from "Funding" stages to "Closed" stages, _finalFundValue must be 0
function enterClosedStage(uint256 _finalFundValue) external nonReentrant onlyOwner {
if (fundStage == FundStages.Closed) revert IncorrectFundStage();
if (fundStage == FundStages.Ongoing) {
IERC20(assetToken).safeTransferFrom(msg.sender, address(this), _finalFundValue);
nominalValue = _finalFundValue;
}
else {
if (_finalFundValue != 0) revert IncorrectFundValue();
}
fundStage = FundStages.Closed;
emit FundClosed(msg.sender, nominalValue);
}
/// @notice Update current nominalValue, for displying purpose only
/// @notice only works in "Ongoing" stage
/// @param _nominalValue nominal value in asset tokens
function updateNominalValue(uint256 _nominalValue) external onlyOwner {
if (fundStage != FundStages.Ongoing) revert IncorrectFundStage();
nominalValue = _nominalValue;
emit FundValueChanged(msg.sender, nominalValue);
}
/// @return assetTokenAddress address of the asset token
function asset() external override view returns (address assetTokenAddress) {
return assetToken;
}
/// @return totalManagedAssets amount of asset tokens under management
function totalAssets() external override view returns (uint256 totalManagedAssets) {
return nominalValue;
}
/// @notice convert amount of assets to shares
/// @param _assets amount of asset tokens
/// @return shares amount of vault tokens
function convertToShares(uint256 _assets) external override view returns (uint256 shares) {
if (totalSupply() == 0) {
// no assets deposited, use initialPrice
return _assets * priceDenominator / initialPrice;
}
else {
return totalSupply() * _assets / nominalValue;
}
}
/// @notice convert amount of shares to assets
/// @param _shares amount of vault tokens
/// @return assets amount of asset tokens
function convertToAssets(uint256 _shares) external override view returns (uint256 assets) {
if (totalSupply() == 0) {
// no assets deposited, use initialPrice
return _shares * initialPrice / priceDenominator;
}
else {
return (nominalValue * _shares) / totalSupply();
}
}
/// @notice Get maximum amount of asset tokens possible for deposit
/// @param _receiver address of the receiver
/// @return maxAssets maximum amount of assets allowed to be deposited
function maxDeposit(address _receiver) external override view returns (uint256 maxAssets) {
if (fundStage != FundStages.Funding) {
return 0;
}
if (!_hasNFT(_receiver)) {
// can't deposit if _receiver has no NFT
return 0;
}
return (maxSupply - totalSupply()) * initialPrice / priceDenominator;
}
/// @notice Preview how much vault tokens will be received when depositing
/// @param _assets amount of asset tokens to deposit
/// @return shares estimated amount of vault tokens received
function previewDeposit(uint256 _assets) public override view returns (uint256 shares) {
if (fundStage != FundStages.Funding) revert IncorrectFundStage();
return _assets * priceDenominator / initialPrice; // round down
}
/// @notice Deposit into the vault
/// @notice only works in "Funding" stage
/// @param _assets amount of asset tokens to deposit
/// @param _receiver address of the receiver
/// @return shares amount of vault tokens received
function deposit(uint256 _assets, address _receiver) external override nonReentrant returns (uint256 shares) {
shares = previewDeposit(_assets);
_internalMint(shares, _assets, true, _receiver);
}
/// @notice Get maximum amount of vault tokens possible for deposit
/// @param _receiver address of the receiver
/// @return maxShares maximum amount of vault tokens allowed to be received
function maxMint(address _receiver) external override view returns (uint256 maxShares) {
if (fundStage != FundStages.Funding) {
return 0;
}
if (!_hasNFT(_receiver)) {
// can't deposit if _receiver has no NFT
return 0;
}
return maxSupply - totalSupply();
}
/// @notice Preview how much asset tokens will be required when depositing
/// @param _shares amount of vault tokens to receive
/// @return assets estimated amount of asset tokens required
function previewMint(uint256 _shares) public override view returns (uint256 assets) {
if (fundStage != FundStages.Funding) revert IncorrectFundStage();
return (_shares * initialPrice + priceDenominator - 1) / priceDenominator; // round up
}
/// @notice Deposit into the vault
/// @notice only works in "Funding" stage
/// @param _shares amount of vault tokens to receive
/// @param _receiver address of the receiver
/// @return assets amount of asset tokens required
function mint(uint256 _shares, address _receiver) external override nonReentrant returns (uint256 assets) {
assets = previewMint(_shares);
_internalMint(_shares, assets, true, _receiver);
}
/// @notice Get maximum amount of assets tokens possible for withdrawal
/// @param _owner address of the owner
/// @return maxAssets maximum amount of asset tokens can be received from withdrawal
function maxWithdraw(address _owner) external override view returns (uint256 maxAssets) {
if (fundStage != FundStages.Closed) {
return 0;
}
return balanceOf(_owner) * nominalValue / totalSupply();
}
/// @notice Preview how much vault tokens will be required when withdrawing
/// @param _assets amount of asset tokens to receive
/// @return shares estimated amount of vault tokens required
function previewWithdraw(uint256 _assets) public override view returns (uint256 shares) {
if (fundStage != FundStages.Closed) revert IncorrectFundStage();
return (totalSupply() * _assets + nominalValue - 1) / nominalValue;
}
/// @notice Withdraw from the vault
/// @notice only works in "Closed" stage
/// @param _assets amount of asset tokens to receive
/// @param _receiver address of the receiver
/// @param _owner address of the owner
/// @return shares amount of vault tokens required
/// @notice if the caller is not owner, owner must approved the caller for spending the vault tokens
function withdraw(uint256 _assets, address _receiver, address _owner) external override nonReentrant returns (uint256 shares) {
shares = previewWithdraw(_assets);
_internalRedeem(shares, _assets, true, _receiver, _owner);
}
/// @notice Get maximum amount of vault tokens possible for withdrawal
/// @param _owner address of the owner
/// @return maxShares maximum amount of vault tokens allowed for withdrawal
function maxRedeem(address _owner) external override view returns (uint256 maxShares) {
if (fundStage != FundStages.Closed) {
return 0;
}
return balanceOf(_owner);
}
/// @notice Preview how much asset tokens will be received from withdrawing
/// @param _shares amount of vault tokens to withdraw
/// @return assets estimated amount of asset tokens received
function previewRedeem(uint256 _shares) public override view returns (uint256 assets) {
if (fundStage != FundStages.Closed) revert IncorrectFundStage();
return (nominalValue * _shares) / totalSupply();
}
/// @notice Withdraw from the vault
/// @notice only works in "Closed" stage
/// @param _shares amount of vault tokens to withdraw
/// @param _receiver address of the receiver
/// @param _owner address of the owner
/// @return assets amount of asset tokens received
/// @notice if the caller is not owner, owner must approved the caller for spending the vault tokens
function redeem(uint256 _shares, address _receiver, address _owner) external override nonReentrant returns (uint256 assets) {
assets = previewRedeem(_shares);
_internalRedeem(_shares, assets, true, _receiver, _owner);
}
/// @notice internal mint helper
/// @param _shares vault tokens to mint
/// @param _assets asset tokens used for minting
/// @param _transfer true to transfer the asset tokens, false if no transfer is needed
/// @param _receiver address of the receiver
function _internalMint(uint256 _shares, uint256 _assets, bool _transfer, address _receiver) internal {
if (fundStage != FundStages.Funding) revert IncorrectFundStage();
if (!_hasNFT(_receiver)) revert ReceiverDoNotHasNFT();
if (_shares + totalSupply() > maxSupply) revert ExceedMaxSupply();
if (_transfer) {
IERC20(assetToken).safeTransferFrom(msg.sender, address(this), _assets);
}
_mint(_receiver, _shares);
nominalValue += _shares * initialPrice / priceDenominator;
emit Deposit(msg.sender, _receiver, _assets, _shares);
}
/// @notice internal redeem helper
/// @param _shares vault tokens to redeem
/// @param _assets asset tokens received for redeeming
/// @param _transfer true to transfer the asset tokens, false if no transfer is needed
/// @param _receiver address of the receiver
/// @param _owner address of the owner
function _internalRedeem(uint256 _shares, uint256 _assets, bool _transfer, address _receiver, address _owner) internal {
if (_receiver == address(0)) revert IncorrectReceiverAddress();
if (fundStage != FundStages.Closed) revert IncorrectFundStage();
if (_owner != msg.sender) {
_spendAllowance(_owner, msg.sender, _shares);
}
_burn(_owner, _shares);
nominalValue -= _assets;
if (_transfer) {
IERC20(assetToken).safeTransfer(_receiver, _assets);
}
emit Withdraw(msg.sender, _receiver, _owner, _assets, _shares);
}
/// @notice internal NFT checker
/// @param _receiver address of the receiver
/// @return hasNFT true if the receiver has at least one of the NFT, false if not
function _hasNFT(address _receiver) internal view returns (bool hasNFT) {
uint256 i;
for (i = 0; i < nftEnabled.length; i++) {
if (IERC721(nftEnabled[i]).balanceOf(_receiver) > 0) {
break;
}
}
return i < nftEnabled.length;
}
}
// File: contracts/NFTVaultETH.sol
// contracts/NFTVaultETH.sol
// Teahouse Finance
pragma solidity ^0.8.0;
error AssetNotWETH9();
error NotEnoughETH();
error NotAcceptingETH();
/// @title A crowd funding vault for NFT investments accepting ETH
/// @notice using WETH as the ERC20 token
/// @author Teahouse Finance
contract NFTVaultETH is NFTVault {
constructor(
string memory _name,
string memory _symbol,
address _weth9,
uint256 _initialPrice,
uint256 _priceDenominator,
uint256 _maxSupply)
NFTVault(_name, _symbol, _weth9, _initialPrice, _priceDenominator, _maxSupply) {
// check _weth9 is actually WETH
if (keccak256(abi.encode(IWETH9(_weth9).symbol())) != keccak256(abi.encode("WETH"))) revert AssetNotWETH9();
}
receive() external payable {
// only accepts ETH from weth9
if (msg.sender != assetToken) revert NotAcceptingETH();
}
/// @notice Enter "Ongoing" stage, using ETH
/// @notice can only do so when in "Funding" stage
/// @notice will withdraw all asset tokens and convert to ETH from the vault
/// @param _receiver address to receive funds
function enterOngoingStageETH(address payable _receiver) external nonReentrant onlyOwner {
if (_receiver == address(0)) revert IncorrectReceiverAddress();
if (fundStage != FundStages.Funding) revert IncorrectFundStage();
uint256 balance = IERC20(assetToken).balanceOf(address(this));
IWETH9(assetToken).withdraw(balance);
Address.sendValue(_receiver, balance);
fundStage = FundStages.Ongoing;
emit FundOngoing(msg.sender, _receiver, nominalValue);
}
/// @notice Enter "Closed" stage.
/// @notice will transfer ETH to the vault and convert to asset token
/// @param _finalFundValue final fund value in ETH
/// @notice if going directly from "Funding" stages to "Closed" stages, _finalFundValue must be 0
function enterClosedStageETH(uint256 _finalFundValue) external payable nonReentrant onlyOwner {
if (fundStage == FundStages.Closed) revert IncorrectFundStage();
if (fundStage == FundStages.Ongoing) {
if (msg.value != _finalFundValue) revert NotEnoughETH();
IWETH9(assetToken).deposit{ value: msg.value }();
nominalValue = _finalFundValue;
}
else {
if (_finalFundValue != 0 || msg.value != 0) revert IncorrectFundValue();
}
fundStage = FundStages.Closed;
emit FundClosed(msg.sender, nominalValue);
}
/// @notice Deposit into the vault, in ETH
/// @notice only works in "Funding" stage
/// @param _assets amount of ETH to deposit
/// @param _receiver address of the receiver
/// @return shares amount of vault tokens received
function depositETH(uint256 _assets, address _receiver) external payable nonReentrant returns (uint256 shares) {
if (msg.value != _assets) revert NotEnoughETH();
IWETH9(assetToken).deposit{ value: msg.value }();
shares = previewDeposit(_assets);
_internalMint(shares, _assets, false, _receiver);
}
/// @notice Deposit into the vault, in ETH
/// @notice only works in "Funding" stage
/// @param _shares amount of vault tokens to receive
/// @param _receiver address of the receiver
/// @return assets amount of asset tokens required
function mintETH(uint256 _shares, address _receiver) external payable nonReentrant returns (uint256 assets) {
assets = previewMint(_shares);
if (msg.value < assets) revert NotEnoughETH();
uint256 remain = msg.value - assets;
if (remain > 0) {
// send remaining ETH back to the sender
Address.sendValue(payable(msg.sender), remain);
}
IWETH9(assetToken).deposit{ value: assets }();
_internalMint(_shares, assets, false, _receiver);
}
/// @notice Withdraw from the vault, in ETH
/// @notice only works in "Closed" stage
/// @param _assets amount of asset tokens to receive
/// @param _receiver address of the receiver
/// @param _owner address of the owner
/// @return shares amount of vault tokens required
/// @notice if the caller is not owner, owner must approved the caller for spending the vault tokens
function withdrawETH(uint256 _assets, address payable _receiver, address _owner) external nonReentrant returns (uint256 shares) {
shares = (totalSupply() * _assets + nominalValue - 1) / nominalValue;
_internalRedeem(shares, _assets, false, _receiver, _owner);
IWETH9(assetToken).withdraw(_assets);
Address.sendValue(_receiver, _assets);
}
/// @notice Withdraw from the vault, in ETH
/// @notice only works in "Closed" stage
/// @param _shares amount of vault tokens to withdraw
/// @param _receiver address of the receiver
/// @param _owner address of the owner
/// @return assets amount of asset tokens received
/// @notice if the caller is not owner, owner must approved the caller for spending the vault tokens
function redeemETH(uint256 _shares, address payable _receiver, address _owner) external nonReentrant returns (uint256 assets) {
assets = (nominalValue * _shares) / totalSupply();
_internalRedeem(_shares, assets, false, _receiver, _owner);
IWETH9(assetToken).withdraw(assets);
Address.sendValue(_receiver, assets);
}
}
{
"compilationTarget": {
"NFTVaultETH.sol": "NFTVaultETH"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 99999
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"remappings": []
}
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