Contract Source Code:
File 1 of 1 : UnionVault
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
// Part: IBasicRewards
interface IBasicRewards {
function stakeFor(address, uint256) external returns (bool);
function balanceOf(address) external view returns (uint256);
function earned(address) external view returns (uint256);
function withdrawAll(bool) external returns (bool);
function withdraw(uint256, bool) external returns (bool);
function getReward() external returns (bool);
function stake(uint256) external returns (bool);
}
// Part: ICurveFactoryPool
interface ICurveFactoryPool {
function get_dy(
int128 i,
int128 j,
uint256 dx
) external view returns (uint256);
function get_balances() external view returns (uint256[2] memory);
function add_liquidity(
uint256[2] memory _amounts,
uint256 _min_mint_amount,
address _receiver
) external returns (uint256);
function exchange(
int128 i,
int128 j,
uint256 _dx,
uint256 _min_dy,
address _receiver
) external returns (uint256);
}
// Part: ICurvePool
interface ICurvePool {
function remove_liquidity_one_coin(
uint256 token_amount,
int128 i,
uint256 min_amount
) external;
function calc_withdraw_one_coin(uint256 _token_amount, int128 i)
external
view
returns (uint256);
}
// Part: ICurveTriCrypto
interface ICurveTriCrypto {
function exchange(
uint256 i,
uint256 j,
uint256 dx,
uint256 min_dy,
bool use_eth
) external;
function get_dy(
uint256 i,
uint256 j,
uint256 dx
) external view returns (uint256);
}
// Part: ICurveV2Pool
interface ICurveV2Pool {
function get_dy(
uint256 i,
uint256 j,
uint256 dx
) external view returns (uint256);
function exchange_underlying(
uint256 i,
uint256 j,
uint256 dx,
uint256 min_dy
) external payable returns (uint256);
}
// Part: ICvxCrvDeposit
interface ICvxCrvDeposit {
function deposit(uint256, bool) external;
}
// Part: ICvxMining
interface ICvxMining {
function ConvertCrvToCvx(uint256 _amount) external view returns (uint256);
}
// Part: IVirtualBalanceRewardPool
interface IVirtualBalanceRewardPool {
function earned(address account) external view returns (uint256);
}
// Part: OpenZeppelin/[email protected]/Address
/**
* @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
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 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");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(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");
// solhint-disable-next-line avoid-low-level-calls
(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");
// solhint-disable-next-line avoid-low-level-calls
(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");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// Part: OpenZeppelin/[email protected]/Context
/*
* @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) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// Part: OpenZeppelin/[email protected]/IERC20
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @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 `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);
/**
* @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);
}
// Part: OpenZeppelin/[email protected]/ReentrancyGuard
/**
* @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 make 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;
}
}
// Part: OpenZeppelin/[email protected]/IERC20Metadata
/**
* @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);
}
// Part: OpenZeppelin/[email protected]/Ownable
/**
* @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 () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), 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 {
emit OwnershipTransferred(_owner, address(0));
_owner = 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");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// Part: OpenZeppelin/[email protected]/SafeERC20
/**
* @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'
// solhint-disable-next-line max-line-length
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
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// Part: UnionBase
// Common variables and functions
contract UnionBase {
address public constant CVXCRV_STAKING_CONTRACT =
0x3Fe65692bfCD0e6CF84cB1E7d24108E434A7587e;
address public constant CURVE_CRV_ETH_POOL =
0x8301AE4fc9c624d1D396cbDAa1ed877821D7C511;
address public constant CURVE_CVX_ETH_POOL =
0xB576491F1E6e5E62f1d8F26062Ee822B40B0E0d4;
address public constant CURVE_CVXCRV_CRV_POOL =
0x9D0464996170c6B9e75eED71c68B99dDEDf279e8;
address public constant CRV_TOKEN =
0xD533a949740bb3306d119CC777fa900bA034cd52;
address public constant CVXCRV_TOKEN =
0x62B9c7356A2Dc64a1969e19C23e4f579F9810Aa7;
address public constant CVX_TOKEN =
0x4e3FBD56CD56c3e72c1403e103b45Db9da5B9D2B;
uint256 public constant CRVETH_ETH_INDEX = 0;
uint256 public constant CRVETH_CRV_INDEX = 1;
int128 public constant CVXCRV_CRV_INDEX = 0;
int128 public constant CVXCRV_CVXCRV_INDEX = 1;
uint256 public constant CVXETH_ETH_INDEX = 0;
uint256 public constant CVXETH_CVX_INDEX = 1;
IBasicRewards cvxCrvStaking = IBasicRewards(CVXCRV_STAKING_CONTRACT);
ICurveV2Pool cvxEthSwap = ICurveV2Pool(CURVE_CVX_ETH_POOL);
ICurveV2Pool crvEthSwap = ICurveV2Pool(CURVE_CRV_ETH_POOL);
ICurveFactoryPool crvCvxCrvSwap = ICurveFactoryPool(CURVE_CVXCRV_CRV_POOL);
/// @notice Swap CRV for cvxCRV on Curve
/// @param amount - amount to swap
/// @param recipient - where swapped tokens will be sent to
/// @return amount of CRV obtained after the swap
function _swapCrvToCvxCrv(uint256 amount, address recipient)
internal
returns (uint256)
{
return _crvToCvxCrv(amount, recipient, 0);
}
/// @notice Swap CRV for cvxCRV on Curve
/// @param amount - amount to swap
/// @param recipient - where swapped tokens will be sent to
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of CRV obtained after the swap
function _swapCrvToCvxCrv(
uint256 amount,
address recipient,
uint256 minAmountOut
) internal returns (uint256) {
return _crvToCvxCrv(amount, recipient, minAmountOut);
}
/// @notice Swap CRV for cvxCRV on Curve
/// @param amount - amount to swap
/// @param recipient - where swapped tokens will be sent to
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of CRV obtained after the swap
function _crvToCvxCrv(
uint256 amount,
address recipient,
uint256 minAmountOut
) internal returns (uint256) {
return
crvCvxCrvSwap.exchange(
CVXCRV_CRV_INDEX,
CVXCRV_CVXCRV_INDEX,
amount,
minAmountOut,
recipient
);
}
/// @notice Swap cvxCRV for CRV on Curve
/// @param amount - amount to swap
/// @param recipient - where swapped tokens will be sent to
/// @return amount of CRV obtained after the swap
function _swapCvxCrvToCrv(uint256 amount, address recipient)
internal
returns (uint256)
{
return _cvxCrvToCrv(amount, recipient, 0);
}
/// @notice Swap cvxCRV for CRV on Curve
/// @param amount - amount to swap
/// @param recipient - where swapped tokens will be sent to
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of CRV obtained after the swap
function _swapCvxCrvToCrv(
uint256 amount,
address recipient,
uint256 minAmountOut
) internal returns (uint256) {
return _cvxCrvToCrv(amount, recipient, minAmountOut);
}
/// @notice Swap cvxCRV for CRV on Curve
/// @param amount - amount to swap
/// @param recipient - where swapped tokens will be sent to
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of CRV obtained after the swap
function _cvxCrvToCrv(
uint256 amount,
address recipient,
uint256 minAmountOut
) internal returns (uint256) {
return
crvCvxCrvSwap.exchange(
CVXCRV_CVXCRV_INDEX,
CVXCRV_CRV_INDEX,
amount,
minAmountOut,
recipient
);
}
/// @notice Swap CRV for native ETH on Curve
/// @param amount - amount to swap
/// @return amount of ETH obtained after the swap
function _swapCrvToEth(uint256 amount) internal returns (uint256) {
return _crvToEth(amount, 0);
}
/// @notice Swap CRV for native ETH on Curve
/// @param amount - amount to swap
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of ETH obtained after the swap
function _swapCrvToEth(uint256 amount, uint256 minAmountOut)
internal
returns (uint256)
{
return _crvToEth(amount, minAmountOut);
}
/// @notice Swap CRV for native ETH on Curve
/// @param amount - amount to swap
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of ETH obtained after the swap
function _crvToEth(uint256 amount, uint256 minAmountOut)
internal
returns (uint256)
{
return
crvEthSwap.exchange_underlying{value: 0}(
CRVETH_CRV_INDEX,
CRVETH_ETH_INDEX,
amount,
minAmountOut
);
}
/// @notice Swap native ETH for CRV on Curve
/// @param amount - amount to swap
/// @return amount of CRV obtained after the swap
function _swapEthToCrv(uint256 amount) internal returns (uint256) {
return _ethToCrv(amount, 0);
}
/// @notice Swap native ETH for CRV on Curve
/// @param amount - amount to swap
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of CRV obtained after the swap
function _swapEthToCrv(uint256 amount, uint256 minAmountOut)
internal
returns (uint256)
{
return _ethToCrv(amount, minAmountOut);
}
/// @notice Swap native ETH for CRV on Curve
/// @param amount - amount to swap
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of CRV obtained after the swap
function _ethToCrv(uint256 amount, uint256 minAmountOut)
internal
returns (uint256)
{
return
crvEthSwap.exchange_underlying{value: amount}(
CRVETH_ETH_INDEX,
CRVETH_CRV_INDEX,
amount,
minAmountOut
);
}
/// @notice Swap native ETH for CVX on Curve
/// @param amount - amount to swap
/// @return amount of CRV obtained after the swap
function _swapEthToCvx(uint256 amount) internal returns (uint256) {
return _ethToCvx(amount, 0);
}
/// @notice Swap native ETH for CVX on Curve
/// @param amount - amount to swap
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of CRV obtained after the swap
function _swapEthToCvx(uint256 amount, uint256 minAmountOut)
internal
returns (uint256)
{
return _ethToCvx(amount, minAmountOut);
}
/// @notice Swap native ETH for CVX on Curve
/// @param amount - amount to swap
/// @param minAmountOut - minimum expected amount of output tokens
/// @return amount of CRV obtained after the swap
function _ethToCvx(uint256 amount, uint256 minAmountOut)
internal
returns (uint256)
{
return
cvxEthSwap.exchange_underlying{value: amount}(
CVXETH_ETH_INDEX,
CVXETH_CVX_INDEX,
amount,
minAmountOut
);
}
modifier notToZeroAddress(address _to) {
require(_to != address(0), "Invalid address!");
_;
}
}
// Part: ClaimZaps
contract ClaimZaps is ReentrancyGuard, UnionBase {
using SafeERC20 for IERC20;
// Possible options when claiming
enum Option {
Claim,
ClaimAsETH,
ClaimAsCRV,
ClaimAsCVX,
ClaimAndStake
}
/// @notice Set approvals for the tokens used when swapping
function _setApprovals() internal {
IERC20(CRV_TOKEN).safeApprove(CURVE_CRV_ETH_POOL, 0);
IERC20(CRV_TOKEN).safeApprove(CURVE_CRV_ETH_POOL, type(uint256).max);
IERC20(CVXCRV_TOKEN).safeApprove(CVXCRV_STAKING_CONTRACT, 0);
IERC20(CVXCRV_TOKEN).safeApprove(
CVXCRV_STAKING_CONTRACT,
type(uint256).max
);
IERC20(CVXCRV_TOKEN).safeApprove(CURVE_CVXCRV_CRV_POOL, 0);
IERC20(CVXCRV_TOKEN).safeApprove(
CURVE_CVXCRV_CRV_POOL,
type(uint256).max
);
}
function _claimAs(
address account,
uint256 amount,
Option option
) internal {
_claim(account, amount, option, 0);
}
function _claimAs(
address account,
uint256 amount,
Option option,
uint256 minAmountOut
) internal {
_claim(account, amount, option, minAmountOut);
}
/// @notice Zap function to claim token balance as another token
/// @param account - recipient of the swapped token
/// @param amount - amount to swap
/// @param option - what to swap to
/// @param minAmountOut - minimum desired amount of output token
function _claim(
address account,
uint256 amount,
Option option,
uint256 minAmountOut
) internal nonReentrant {
if (option == Option.ClaimAsCRV) {
_swapCvxCrvToCrv(amount, account, minAmountOut);
} else if (option == Option.ClaimAsETH) {
uint256 _crvBalance = _swapCvxCrvToCrv(amount, address(this));
uint256 _ethAmount = _swapCrvToEth(_crvBalance, minAmountOut);
(bool success, ) = account.call{value: _ethAmount}("");
require(success, "ETH transfer failed");
} else if (option == Option.ClaimAsCVX) {
uint256 _crvBalance = _swapCvxCrvToCrv(amount, address(this));
uint256 _ethAmount = _swapCrvToEth(_crvBalance);
uint256 _cvxAmount = _swapEthToCvx(_ethAmount, minAmountOut);
IERC20(CVX_TOKEN).safeTransfer(account, _cvxAmount);
} else if (option == Option.ClaimAndStake) {
require(cvxCrvStaking.stakeFor(account, amount), "Staking failed");
} else {
IERC20(CVXCRV_TOKEN).safeTransfer(account, amount);
}
}
}
// Part: OpenZeppelin/[email protected]/ERC20
/**
* @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 guidelines: functions revert instead
* of 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 defaut 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:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, 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}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), 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}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - 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) {
_approve(_msgSender(), spender, _allowances[_msgSender()][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) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is 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:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, 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:
*
* - `to` 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);
}
/**
* @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");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(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 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 to 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 { }
}
// File: UnionVault.sol
contract UnionVault is ClaimZaps, ERC20, Ownable {
using SafeERC20 for IERC20;
address private constant TRIPOOL =
0xbEbc44782C7dB0a1A60Cb6fe97d0b483032FF1C7;
address private constant THREECRV_TOKEN =
0x6c3F90f043a72FA612cbac8115EE7e52BDe6E490;
address private constant USDT_TOKEN =
0xdAC17F958D2ee523a2206206994597C13D831ec7;
address private constant TRICRYPTO =
0xD51a44d3FaE010294C616388b506AcdA1bfAAE46;
address private constant CVX_MINING_LIB =
0x3c75BFe6FbfDa3A94E7E7E8c2216AFc684dE5343;
address private constant THREE_CRV_REWARDS =
0x7091dbb7fcbA54569eF1387Ac89Eb2a5C9F6d2EA;
address private constant CVXCRV_DEPOSIT =
0x8014595F2AB54cD7c604B00E9fb932176fDc86Ae;
address public platform = 0x9Bc7c6ad7E7Cf3A6fCB58fb21e27752AC1e53f99;
uint256 public withdrawalPenalty = 100;
uint256 public constant MAX_WITHDRAWAL_PENALTY = 150;
uint256 public platformFee = 500;
uint256 public constant MAX_PLATFORM_FEE = 2000;
uint256 public callIncentive = 500;
uint256 public constant MAX_CALL_INCENTIVE = 500;
uint256 public constant FEE_DENOMINATOR = 10000;
ICurvePool private tripool = ICurvePool(TRIPOOL);
ICurveTriCrypto private tricrypto = ICurveTriCrypto(TRICRYPTO);
event Harvest(address indexed _caller, uint256 _value);
event Deposit(address indexed _from, address indexed _to, uint256 _value);
event Withdraw(address indexed _from, address indexed _to, uint256 _value);
event WithdrawalPenaltyUpdated(uint256 _penalty);
event CallerIncentiveUpdated(uint256 _incentive);
event PlatformFeeUpdated(uint256 _fee);
event PlatformUpdated(address indexed _platform);
constructor()
ERC20(
string(abi.encodePacked("Unionized cvxCRV")),
string(abi.encodePacked("uCRV"))
)
{}
/// @notice Set approvals for the contracts used when swapping & staking
function setApprovals() external onlyOwner {
IERC20(THREECRV_TOKEN).safeApprove(TRIPOOL, 0);
IERC20(THREECRV_TOKEN).safeApprove(TRIPOOL, type(uint256).max);
IERC20(CVX_TOKEN).safeApprove(CURVE_CVX_ETH_POOL, 0);
IERC20(CVX_TOKEN).safeApprove(CURVE_CVX_ETH_POOL, type(uint256).max);
IERC20(USDT_TOKEN).safeApprove(TRICRYPTO, 0);
IERC20(USDT_TOKEN).safeApprove(TRICRYPTO, type(uint256).max);
IERC20(CRV_TOKEN).safeApprove(CVXCRV_DEPOSIT, 0);
IERC20(CRV_TOKEN).safeApprove(CVXCRV_DEPOSIT, type(uint256).max);
IERC20(CRV_TOKEN).safeApprove(CURVE_CVXCRV_CRV_POOL, 0);
IERC20(CRV_TOKEN).safeApprove(CURVE_CVXCRV_CRV_POOL, type(uint256).max);
_setApprovals();
}
/// @notice Updates the withdrawal penalty
/// @param _penalty - the amount of the new penalty (in BIPS)
function setWithdrawalPenalty(uint256 _penalty) external onlyOwner {
require(_penalty <= MAX_WITHDRAWAL_PENALTY);
withdrawalPenalty = _penalty;
emit WithdrawalPenaltyUpdated(_penalty);
}
/// @notice Updates the caller incentive for harvests
/// @param _incentive - the amount of the new incentive (in BIPS)
function setCallIncentive(uint256 _incentive) external onlyOwner {
require(_incentive <= MAX_CALL_INCENTIVE);
callIncentive = _incentive;
emit CallerIncentiveUpdated(_incentive);
}
/// @notice Updates the part of yield redirected to the platform
/// @param _fee - the amount of the new platform fee (in BIPS)
function setPlatformFee(uint256 _fee) external onlyOwner {
require(_fee <= MAX_PLATFORM_FEE);
platformFee = _fee;
emit PlatformFeeUpdated(_fee);
}
/// @notice Updates the address to which platform fees are paid out
/// @param _platform - the new platform wallet address
function setPlatform(address _platform)
external
onlyOwner
notToZeroAddress(_platform)
{
platform = _platform;
emit PlatformUpdated(_platform);
}
/// @notice Query the amount currently staked
/// @return total - the total amount of tokens staked
function totalUnderlying() public view returns (uint256 total) {
return cvxCrvStaking.balanceOf(address(this));
}
/// @notice Query the total amount of currently claimable CRV
/// @return total - the total amount of CRV claimable
function outstandingCrvRewards() public view returns (uint256 total) {
return cvxCrvStaking.earned(address(this));
}
/// @notice Query the total amount of currently claimable CVX
/// @return total - the total amount of CVX claimable
function outstandingCvxRewards() external view returns (uint256 total) {
return
ICvxMining(CVX_MINING_LIB).ConvertCrvToCvx(outstandingCrvRewards());
}
/// @notice Query the total amount of currently claimable 3CRV
/// @return total - the total amount of 3CRV claimable
function outstanding3CrvRewards() external view returns (uint256 total) {
return
IVirtualBalanceRewardPool(THREE_CRV_REWARDS).earned(address(this));
}
/// @notice Returns the amount of cvxCRV a user can claim
/// @param user - address whose claimable amount to query
/// @return amount - claimable amount
/// @dev Does not account for penalties and fees
function balanceOfUnderlying(address user)
external
view
returns (uint256 amount)
{
require(totalSupply() > 0, "No users");
return ((balanceOf(user) * totalUnderlying()) / totalSupply());
}
/// @notice Returns the address of the underlying token
function underlying() external view returns (address) {
return CVXCRV_TOKEN;
}
/// @notice Claim rewards and swaps them to cvxCrv for restaking
/// @dev Can be called by anyone against an incentive in cvxCrv
function harvest() public {
// claim rewards
cvxCrvStaking.getReward();
// sell CVX rewards for ETH
uint256 _cvxAmount = IERC20(CVX_TOKEN).balanceOf(address(this));
if (_cvxAmount > 0) {
cvxEthSwap.exchange_underlying{value: 0}(
CVXETH_CVX_INDEX,
CVXETH_ETH_INDEX,
_cvxAmount,
0
);
}
// pull 3crv out as USDT, swap for ETH
uint256 _threeCrvBalance = IERC20(THREECRV_TOKEN).balanceOf(
address(this)
);
if (_threeCrvBalance > 0) {
tripool.remove_liquidity_one_coin(_threeCrvBalance, 2, 0);
uint256 _usdtBalance = IERC20(USDT_TOKEN).balanceOf(address(this));
if (_usdtBalance > 0) {
tricrypto.exchange(0, 2, _usdtBalance, 0, true);
}
}
// swap everything to CRV
uint256 _crvBalance = IERC20(CRV_TOKEN).balanceOf(address(this));
uint256 _ethBalance = address(this).balance;
if (_ethBalance > 0) {
_crvBalance += _swapEthToCrv(address(this).balance);
}
if (_crvBalance > 0) {
uint256 _quote = crvCvxCrvSwap.get_dy(
CVXCRV_CRV_INDEX,
CVXCRV_CVXCRV_INDEX,
_crvBalance
);
// swap on Curve if there is a premium for doing so
if (_quote > _crvBalance) {
_swapCrvToCvxCrv(_crvBalance, address(this));
}
// otherwise deposit & lock
else {
ICvxCrvDeposit(CVXCRV_DEPOSIT).deposit(_crvBalance, true);
}
}
uint256 _cvxCrvBalance = IERC20(CVXCRV_TOKEN).balanceOf(address(this));
emit Harvest(msg.sender, _cvxCrvBalance);
// if this is the last call, no restake & no fees
if (totalSupply() == 0) {
return;
}
if (_cvxCrvBalance > 0) {
uint256 _stakingAmount = _cvxCrvBalance;
// Deduce and pay out incentive to caller (not needed for final exit)
if (callIncentive > 0) {
uint256 incentiveAmount = (_cvxCrvBalance * callIncentive) /
FEE_DENOMINATOR;
IERC20(CVXCRV_TOKEN).safeTransfer(msg.sender, incentiveAmount);
_stakingAmount = _stakingAmount - incentiveAmount;
}
// Deduce and pay platform fee
if (platformFee > 0) {
uint256 feeAmount = (_cvxCrvBalance * platformFee) /
FEE_DENOMINATOR;
IERC20(CVXCRV_TOKEN).safeTransfer(platform, feeAmount);
_stakingAmount = _stakingAmount - feeAmount;
}
cvxCrvStaking.stake(_stakingAmount);
}
}
/// @notice Deposit user funds in the autocompounder and mints tokens
/// representing user's share of the pool in exchange
/// @param _to - the address that will receive the shares
/// @param _amount - the amount of cvxCrv to deposit
/// @return _shares - the amount of shares issued
function deposit(address _to, uint256 _amount)
public
notToZeroAddress(_to)
returns (uint256 _shares)
{
require(_amount > 0, "Deposit too small");
uint256 _before = totalUnderlying();
IERC20(CVXCRV_TOKEN).safeTransferFrom(
msg.sender,
address(this),
_amount
);
cvxCrvStaking.stake(_amount);
// Issues shares in proportion of deposit to pool amount
uint256 shares = 0;
if (totalSupply() == 0) {
shares = _amount;
} else {
shares = (_amount * totalSupply()) / _before;
}
_mint(_to, shares);
emit Deposit(msg.sender, _to, _amount);
return shares;
}
/// @notice Deposit all of user's cvxCRV balance
/// @param _to - the address that will receive the shares
/// @return _shares - the amount of shares issued
function depositAll(address _to) external returns (uint256 _shares) {
return deposit(_to, IERC20(CVXCRV_TOKEN).balanceOf(msg.sender));
}
/// @notice Unstake cvxCrv in proportion to the amount of shares sent
/// @param _shares - the number of shares sent
/// @return _withdrawable - the withdrawable cvxCrv amount
function _withdraw(uint256 _shares)
internal
returns (uint256 _withdrawable)
{
require(totalSupply() > 0);
// Computes the amount withdrawable based on the number of shares sent
uint256 amount = (_shares * totalUnderlying()) / totalSupply();
// Burn the shares before retrieving tokens
_burn(msg.sender, _shares);
// If user is last to withdraw, harvest before exit
if (totalSupply() == 0) {
harvest();
cvxCrvStaking.withdraw(totalUnderlying(), false);
_withdrawable = IERC20(CVXCRV_TOKEN).balanceOf(address(this));
}
// Otherwise compute share and unstake
else {
_withdrawable = amount;
// Substract a small withdrawal fee to prevent users "timing"
// the harvests. The fee stays staked and is therefore
// redistributed to all remaining participants.
uint256 _penalty = (_withdrawable * withdrawalPenalty) /
FEE_DENOMINATOR;
_withdrawable = _withdrawable - _penalty;
cvxCrvStaking.withdraw(_withdrawable, false);
}
return _withdrawable;
}
/// @notice Unstake cvxCrv in proportion to the amount of shares sent
/// @param _to - address to send cvxCrv to
/// @param _shares - the number of shares sent
/// @return withdrawn - the amount of cvxCRV returned to the user
function withdraw(address _to, uint256 _shares)
public
notToZeroAddress(_to)
returns (uint256 withdrawn)
{
// Withdraw requested amount of cvxCrv
uint256 _withdrawable = _withdraw(_shares);
// And sends back cvxCrv to user
IERC20(CVXCRV_TOKEN).safeTransfer(_to, _withdrawable);
emit Withdraw(msg.sender, _to, _withdrawable);
return _withdrawable;
}
/// @notice Withdraw all of a users' position as cvxCRV
/// @param _to - address to send cvxCrv to
/// @return withdrawn - the amount of cvxCRV returned to the user
function withdrawAll(address _to)
external
notToZeroAddress(_to)
returns (uint256 withdrawn)
{
return withdraw(_to, balanceOf(msg.sender));
}
/// @notice Zap function to withdraw as another token
/// @param _to - address to send cvxCrv to
/// @param _shares - the number of shares sent
/// @param option - what to swap to
function withdrawAs(
address _to,
uint256 _shares,
Option option
) external notToZeroAddress(_to) {
uint256 _withdrawn = _withdraw(_shares);
_claimAs(_to, _withdrawn, option);
}
/// @notice Zap function to withdraw all shares to another token
/// @param _to - address to send cvxCrv to
/// @param option - what to swap to
function withdrawAllAs(address _to, Option option)
external
notToZeroAddress(_to)
{
uint256 _withdrawn = _withdraw(balanceOf(msg.sender));
_claimAs(_to, _withdrawn, option);
}
/// @notice Zap function to withdraw as another token
/// @param _to - address to send cvxCrv to
/// @param _shares - the number of shares sent
/// @param option - what to swap to
/// @param minAmountOut - minimum desired amount of output token
function withdrawAs(
address _to,
uint256 _shares,
Option option,
uint256 minAmountOut
) external notToZeroAddress(_to) {
uint256 _withdrawn = _withdraw(_shares);
_claimAs(_to, _withdrawn, option, minAmountOut);
}
/// @notice Zap function to withdraw all shares to another token
/// @param _to - address to send cvxCrv to
/// @param option - what to swap to
/// @param minAmountOut - minimum desired amount of output token
function withdrawAllAs(
address _to,
Option option,
uint256 minAmountOut
) external notToZeroAddress(_to) {
uint256 _withdrawn = _withdraw(balanceOf(msg.sender));
_claimAs(_to, _withdrawn, option, minAmountOut);
}
receive() external payable {}
}