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Contract Name:
TokenizedStrategy
Compiler Version
v0.8.18+commit.87f61d96
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/**
*Submitted for verification at KatanaScan.com on 2025-07-11
*/
// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.8.18 ^0.8.0 ^0.8.1;
// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
/**
* @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);
}
// lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Permit.sol
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*
* ==== Security Considerations
*
* There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
* expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
* considered as an intention to spend the allowance in any specific way. The second is that because permits have
* built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
* take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
* generally recommended is:
*
* ```solidity
* function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
* try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
* doThing(..., value);
* }
*
* function doThing(..., uint256 value) public {
* token.safeTransferFrom(msg.sender, address(this), value);
* ...
* }
* ```
*
* Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
* `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
* {SafeERC20-safeTransferFrom}).
*
* Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
* contracts should have entry points that don't rely on permit.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*
* CAUTION: See Security Considerations above.
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// lib/openzeppelin-contracts/contracts/utils/Address.sol
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
/**
* @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
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or 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 {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// 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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
// lib/openzeppelin-contracts/contracts/utils/Context.sol
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}
// lib/openzeppelin-contracts/contracts/utils/math/Math.sol
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
* with further edits by Uniswap Labs also under MIT license.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1, "Math: mulDiv overflow");
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256, rounded down, of a positive value.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 256, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
}
}
}
// src/interfaces/IBaseStrategy.sol
interface IBaseStrategy {
function tokenizedStrategyAddress() external view returns (address);
/*//////////////////////////////////////////////////////////////
IMMUTABLE FUNCTIONS
//////////////////////////////////////////////////////////////*/
function availableDepositLimit(
address _owner
) external view returns (uint256);
function availableWithdrawLimit(
address _owner
) external view returns (uint256);
function deployFunds(uint256 _assets) external;
function freeFunds(uint256 _amount) external;
function harvestAndReport() external returns (uint256);
function tendThis(uint256 _totalIdle) external;
function shutdownWithdraw(uint256 _amount) external;
function tendTrigger() external view returns (bool, bytes memory);
}
// src/interfaces/IFactory.sol
interface IFactory {
function protocol_fee_config() external view returns (uint16, address);
}
// lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
/**
* @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);
}
// lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* 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}.
*
* 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 default value returned by this function, unless
* it's overridden.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual 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 `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* 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;
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
// decrementing then incrementing.
_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;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_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;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_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 {}
}
// lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)
/**
* @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;
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
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));
}
/**
* @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
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");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
}
}
/**
* @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
* to be set to zero before setting it to a non-zero value, such as USDT.
*/
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
* Revert on invalid signature.
*/
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @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");
require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
/**
* @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).
*
* This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
// 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 cannot use {Address-functionCall} here since this should return false
// and not revert is the subcall reverts.
(bool success, bytes memory returndata) = address(token).call(data);
return
success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
}
}
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/**
* @title Yearn Tokenized Strategy
* @author yearn.finance
* @notice
* This TokenizedStrategy can be used by anyone wishing to easily build
* and deploy their own custom ERC4626 compliant single strategy Vault.
*
* The TokenizedStrategy contract is meant to be used as the proxy
* implementation contract that will handle all logic, storage and
* management for a custom strategy that inherits the `BaseStrategy`.
* Any function calls to the strategy that are not defined within that
* strategy will be forwarded through a delegateCall to this contract.
* A strategist only needs to override a few simple functions that are
* focused entirely on the strategy specific needs to easily and cheaply
* deploy their own permissionless 4626 compliant vault.
*/
contract TokenizedStrategy {
using Math for uint256;
using SafeERC20 for ERC20;
/*//////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
/**
* @notice Emitted when a strategy is shutdown.
*/
event StrategyShutdown();
/**
* @notice Emitted on the initialization of any new `strategy` that uses `asset`
* with this specific `apiVersion`.
*/
event NewTokenizedStrategy(
address indexed strategy,
address indexed asset,
string apiVersion
);
/**
* @notice Emitted when the strategy reports `profit` or `loss` and
* `performanceFees` and `protocolFees` are paid out.
*/
event Reported(
uint256 profit,
uint256 loss,
uint256 protocolFees,
uint256 performanceFees
);
/**
* @notice Emitted when the 'performanceFeeRecipient' address is
* updated to 'newPerformanceFeeRecipient'.
*/
event UpdatePerformanceFeeRecipient(
address indexed newPerformanceFeeRecipient
);
/**
* @notice Emitted when the 'keeper' address is updated to 'newKeeper'.
*/
event UpdateKeeper(address indexed newKeeper);
/**
* @notice Emitted when the 'performanceFee' is updated to 'newPerformanceFee'.
*/
event UpdatePerformanceFee(uint16 newPerformanceFee);
/**
* @notice Emitted when the 'management' address is updated to 'newManagement'.
*/
event UpdateManagement(address indexed newManagement);
/**
* @notice Emitted when the 'emergencyAdmin' address is updated to 'newEmergencyAdmin'.
*/
event UpdateEmergencyAdmin(address indexed newEmergencyAdmin);
/**
* @notice Emitted when the 'profitMaxUnlockTime' is updated to 'newProfitMaxUnlockTime'.
*/
event UpdateProfitMaxUnlockTime(uint256 newProfitMaxUnlockTime);
/**
* @notice Emitted when the 'pendingManagement' address is updated to 'newPendingManagement'.
*/
event UpdatePendingManagement(address indexed newPendingManagement);
/**
* @notice 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
);
/**
* @notice 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);
/**
* @notice Emitted when the `caller` has exchanged `assets` for `shares`,
* and transferred those `shares` to `owner`.
*/
event Deposit(
address indexed caller,
address indexed owner,
uint256 assets,
uint256 shares
);
/**
* @notice Emitted when the `caller` has exchanged `owner`s `shares` for `assets`,
* and transferred those `assets` to `receiver`.
*/
event Withdraw(
address indexed caller,
address indexed receiver,
address indexed owner,
uint256 assets,
uint256 shares
);
/*//////////////////////////////////////////////////////////////
STORAGE STRUCT
//////////////////////////////////////////////////////////////*/
/**
* @dev The struct that will hold all the storage data for each strategy
* that uses this implementation.
*
* This replaces all state variables for a traditional contract. This
* full struct will be initialized on the creation of the strategy
* and continually updated and read from for the life of the contract.
*
* We combine all the variables into one struct to limit the amount of
* times the custom storage slots need to be loaded during complex functions.
*
* Loading the corresponding storage slot for the struct does not
* load any of the contents of the struct into memory. So the size
* will not increase memory related gas usage.
*/
// prettier-ignore
struct StrategyData {
// The ERC20 compliant underlying asset that will be
// used by the Strategy
ERC20 asset;
// These are the corresponding ERC20 variables needed for the
// strategies token that is issued and burned on each deposit or withdraw.
uint8 decimals; // The amount of decimals that `asset` and strategy use.
string name; // The name of the token for the strategy.
uint256 totalSupply; // The total amount of shares currently issued.
mapping(address => uint256) nonces; // Mapping of nonces used for permit functions.
mapping(address => uint256) balances; // Mapping to track current balances for each account that holds shares.
mapping(address => mapping(address => uint256)) allowances; // Mapping to track the allowances for the strategies shares.
// We manually track `totalAssets` to prevent PPS manipulation through airdrops.
uint256 totalAssets;
// Variables for profit reporting and locking.
// We use uint96 for timestamps to fit in the same slot as an address. That overflows in 2.5e+21 years.
// I know Yearn moves slowly but surely V4 will be out by then.
// If the timestamps ever overflow tell the cyborgs still using this code I'm sorry for being cheap.
uint256 profitUnlockingRate; // The rate at which locked profit is unlocking.
uint96 fullProfitUnlockDate; // The timestamp at which all locked shares will unlock.
address keeper; // Address given permission to call {report} and {tend}.
uint32 profitMaxUnlockTime; // The amount of seconds that the reported profit unlocks over.
uint16 performanceFee; // The percent in basis points of profit that is charged as a fee.
address performanceFeeRecipient; // The address to pay the `performanceFee` to.
uint96 lastReport; // The last time a {report} was called.
// Access management variables.
address management; // Main address that can set all configurable variables.
address pendingManagement; // Address that is pending to take over `management`.
address emergencyAdmin; // Address to act in emergencies as well as `management`.
// Strategy Status
uint8 entered; // To prevent reentrancy. Use uint8 for gas savings.
bool shutdown; // Bool that can be used to stop deposits into the strategy.
}
/*//////////////////////////////////////////////////////////////
MODIFIERS
//////////////////////////////////////////////////////////////*/
/**
* @dev Require that the call is coming from the strategies management.
*/
modifier onlyManagement() {
requireManagement(msg.sender);
_;
}
/**
* @dev Require that the call is coming from either the strategies
* management or the keeper.
*/
modifier onlyKeepers() {
requireKeeperOrManagement(msg.sender);
_;
}
/**
* @dev Require that the call is coming from either the strategies
* management or the emergencyAdmin.
*/
modifier onlyEmergencyAuthorized() {
requireEmergencyAuthorized(msg.sender);
_;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Placed over all state changing functions for increased safety.
*/
modifier nonReentrant() {
StrategyData storage S = _strategyStorage();
// On the first call to nonReentrant, `entered` will be false (2)
require(S.entered != ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
S.entered = ENTERED;
_;
// Reset to false (1) once call has finished.
S.entered = NOT_ENTERED;
}
/**
* @notice Require a caller is `management`.
* @dev Is left public so that it can be used by the Strategy.
*
* When the Strategy calls this the msg.sender would be the
* address of the strategy so we need to specify the sender.
*
* @param _sender The original msg.sender.
*/
function requireManagement(address _sender) public view {
require(_sender == _strategyStorage().management, "!management");
}
/**
* @notice Require a caller is the `keeper` or `management`.
* @dev Is left public so that it can be used by the Strategy.
*
* When the Strategy calls this the msg.sender would be the
* address of the strategy so we need to specify the sender.
*
* @param _sender The original msg.sender.
*/
function requireKeeperOrManagement(address _sender) public view {
StrategyData storage S = _strategyStorage();
require(_sender == S.keeper || _sender == S.management, "!keeper");
}
/**
* @notice Require a caller is the `management` or `emergencyAdmin`.
* @dev Is left public so that it can be used by the Strategy.
*
* When the Strategy calls this the msg.sender would be the
* address of the strategy so we need to specify the sender.
*
* @param _sender The original msg.sender.
*/
function requireEmergencyAuthorized(address _sender) public view {
StrategyData storage S = _strategyStorage();
require(
_sender == S.emergencyAdmin || _sender == S.management,
"!emergency authorized"
);
}
/*//////////////////////////////////////////////////////////////
CONSTANTS
//////////////////////////////////////////////////////////////*/
/// @notice API version this TokenizedStrategy implements.
string internal constant API_VERSION = "3.0.4";
/// @notice Value to set the `entered` flag to during a call.
uint8 internal constant ENTERED = 2;
/// @notice Value to set the `entered` flag to at the end of the call.
uint8 internal constant NOT_ENTERED = 1;
/// @notice Maximum in Basis Points the Performance Fee can be set to.
uint16 public constant MAX_FEE = 5_000; // 50%
/// @notice Used for fee calculations.
uint256 internal constant MAX_BPS = 10_000;
/// @notice Used for profit unlocking rate calculations.
uint256 internal constant MAX_BPS_EXTENDED = 1_000_000_000_000;
/// @notice Seconds per year for max profit unlocking time.
uint256 internal constant SECONDS_PER_YEAR = 31_556_952; // 365.2425 days
/**
* @dev Custom storage slot that will be used to store the
* `StrategyData` struct that holds each strategies
* specific storage variables.
*
* Any storage updates done by the TokenizedStrategy actually update
* the storage of the calling contract. This variable points
* to the specific location that will be used to store the
* struct that holds all that data.
*
* We use a custom string in order to get a random
* storage slot that will allow for strategists to use any
* amount of storage in their strategy without worrying
* about collisions.
*/
bytes32 internal constant BASE_STRATEGY_STORAGE =
bytes32(uint256(keccak256("yearn.base.strategy.storage")) - 1);
/*//////////////////////////////////////////////////////////////
IMMUTABLE
//////////////////////////////////////////////////////////////*/
/// @notice Address of the previously deployed Vault factory that the
// protocol fee config is retrieved from.
address public immutable FACTORY;
/*//////////////////////////////////////////////////////////////
STORAGE GETTER
//////////////////////////////////////////////////////////////*/
/**
* @dev will return the actual storage slot where the strategy
* specific `StrategyData` struct is stored for both read
* and write operations.
*
* This loads just the slot location, not the full struct
* so it can be used in a gas efficient manner.
*/
function _strategyStorage() internal pure returns (StrategyData storage S) {
// Since STORAGE_SLOT is a constant, we have to put a variable
// on the stack to access it from an inline assembly block.
bytes32 slot = BASE_STRATEGY_STORAGE;
assembly {
S.slot := slot
}
}
/*//////////////////////////////////////////////////////////////
INITIALIZATION
//////////////////////////////////////////////////////////////*/
/**
* @notice Used to initialize storage for a newly deployed strategy.
* @dev This should be called atomically whenever a new strategy is
* deployed and can only be called once for each strategy.
*
* This will set all the default storage that must be set for a
* strategy to function. Any changes can be made post deployment
* through external calls from `management`.
*
* The function will also emit an event that off chain indexers can
* look for to track any new deployments using this TokenizedStrategy.
*
* @param _asset Address of the underlying asset.
* @param _name Name the strategy will use.
* @param _management Address to set as the strategies `management`.
* @param _performanceFeeRecipient Address to receive performance fees.
* @param _keeper Address to set as strategies `keeper`.
*/
function initialize(
address _asset,
string memory _name,
address _management,
address _performanceFeeRecipient,
address _keeper
) external {
// Cache storage pointer.
StrategyData storage S = _strategyStorage();
// Make sure we aren't initialized.
require(address(S.asset) == address(0), "initialized");
// Set the strategy's underlying asset.
S.asset = ERC20(_asset);
// Set the Strategy Tokens name.
S.name = _name;
// Set decimals based off the `asset`.
S.decimals = ERC20(_asset).decimals();
// Default to a 10 day profit unlock period.
S.profitMaxUnlockTime = 10 days;
// Set address to receive performance fees.
// Can't be address(0) or we will be burning fees.
require(_performanceFeeRecipient != address(0), "ZERO ADDRESS");
// Can't mint shares to its self because of profit locking.
require(_performanceFeeRecipient != address(this), "self");
S.performanceFeeRecipient = _performanceFeeRecipient;
// Default to a 10% performance fee.
S.performanceFee = 1_000;
// Set last report to this block.
S.lastReport = uint96(block.timestamp);
// Set the default management address. Can't be 0.
require(_management != address(0), "ZERO ADDRESS");
S.management = _management;
// Set the keeper address
S.keeper = _keeper;
// Emit event to signal a new strategy has been initialized.
emit NewTokenizedStrategy(address(this), _asset, API_VERSION);
}
/*//////////////////////////////////////////////////////////////
ERC4626 WRITE METHODS
//////////////////////////////////////////////////////////////*/
/**
* @notice Mints `shares` of strategy shares to `receiver` by
* depositing exactly `assets` of underlying tokens.
* @param assets The amount of underlying to deposit in.
* @param receiver The address to receive the `shares`.
* @return shares The actual amount of shares issued.
*/
function deposit(
uint256 assets,
address receiver
) external nonReentrant returns (uint256 shares) {
// Get the storage slot for all following calls.
StrategyData storage S = _strategyStorage();
// Deposit full balance if using max uint.
if (assets == type(uint256).max) {
assets = S.asset.balanceOf(msg.sender);
}
// Checking max deposit will also check if shutdown.
require(
assets <= _maxDeposit(S, receiver),
"ERC4626: deposit more than max"
);
// Check for rounding error.
require(
(shares = _convertToShares(S, assets, Math.Rounding.Down)) != 0,
"ZERO_SHARES"
);
_deposit(S, receiver, assets, shares);
}
/**
* @notice Mints exactly `shares` of strategy shares to
* `receiver` by depositing `assets` of underlying tokens.
* @param shares The amount of strategy shares mint.
* @param receiver The address to receive the `shares`.
* @return assets The actual amount of asset deposited.
*/
function mint(
uint256 shares,
address receiver
) external nonReentrant returns (uint256 assets) {
// Get the storage slot for all following calls.
StrategyData storage S = _strategyStorage();
// Checking max mint will also check if shutdown.
require(shares <= _maxMint(S, receiver), "ERC4626: mint more than max");
// Check for rounding error.
require(
(assets = _convertToAssets(S, shares, Math.Rounding.Up)) != 0,
"ZERO_ASSETS"
);
_deposit(S, receiver, assets, shares);
}
/**
* @notice Withdraws exactly `assets` from `owners` shares and sends
* the underlying tokens to `receiver`.
* @dev This will default to not allowing any loss to be taken.
* @param assets The amount of underlying to withdraw.
* @param receiver The address to receive `assets`.
* @param owner The address whose shares are burnt.
* @return shares The actual amount of shares burnt.
*/
function withdraw(
uint256 assets,
address receiver,
address owner
) external returns (uint256 shares) {
return withdraw(assets, receiver, owner, 0);
}
/**
* @notice Withdraws `assets` from `owners` shares and sends
* the underlying tokens to `receiver`.
* @dev This includes an added parameter to allow for losses.
* @param assets The amount of underlying to withdraw.
* @param receiver The address to receive `assets`.
* @param owner The address whose shares are burnt.
* @param maxLoss The amount of acceptable loss in Basis points.
* @return shares The actual amount of shares burnt.
*/
function withdraw(
uint256 assets,
address receiver,
address owner,
uint256 maxLoss
) public nonReentrant returns (uint256 shares) {
// Get the storage slot for all following calls.
StrategyData storage S = _strategyStorage();
require(
assets <= _maxWithdraw(S, owner),
"ERC4626: withdraw more than max"
);
// Check for rounding error or 0 value.
require(
(shares = _convertToShares(S, assets, Math.Rounding.Up)) != 0,
"ZERO_SHARES"
);
// Withdraw and track the actual amount withdrawn for loss check.
_withdraw(S, receiver, owner, assets, shares, maxLoss);
}
/**
* @notice Redeems exactly `shares` from `owner` and
* sends `assets` of underlying tokens to `receiver`.
* @dev This will default to allowing any loss passed to be realized.
* @param shares The amount of shares burnt.
* @param receiver The address to receive `assets`.
* @param owner The address whose shares are burnt.
* @return assets The actual amount of underlying withdrawn.
*/
function redeem(
uint256 shares,
address receiver,
address owner
) external returns (uint256) {
// We default to not limiting a potential loss.
return redeem(shares, receiver, owner, MAX_BPS);
}
/**
* @notice Redeems exactly `shares` from `owner` and
* sends `assets` of underlying tokens to `receiver`.
* @dev This includes an added parameter to allow for losses.
* @param shares The amount of shares burnt.
* @param receiver The address to receive `assets`.
* @param owner The address whose shares are burnt.
* @param maxLoss The amount of acceptable loss in Basis points.
* @return . The actual amount of underlying withdrawn.
*/
function redeem(
uint256 shares,
address receiver,
address owner,
uint256 maxLoss
) public nonReentrant returns (uint256) {
// Get the storage slot for all following calls.
StrategyData storage S = _strategyStorage();
require(
shares <= _maxRedeem(S, owner),
"ERC4626: redeem more than max"
);
uint256 assets;
// Check for rounding error or 0 value.
require(
(assets = _convertToAssets(S, shares, Math.Rounding.Down)) != 0,
"ZERO_ASSETS"
);
// We need to return the actual amount withdrawn in case of a loss.
return _withdraw(S, receiver, owner, assets, shares, maxLoss);
}
/*//////////////////////////////////////////////////////////////
EXTERNAL 4626 VIEW METHODS
//////////////////////////////////////////////////////////////*/
/**
* @notice Get the total amount of assets this strategy holds
* as of the last report.
*
* We manually track `totalAssets` to avoid any PPS manipulation.
*
* @return . Total assets the strategy holds.
*/
function totalAssets() external view returns (uint256) {
return _totalAssets(_strategyStorage());
}
/**
* @notice Get the current supply of the strategies shares.
*
* Locked shares issued to the strategy from profits are not
* counted towards the full supply until they are unlocked.
*
* As more shares slowly unlock the totalSupply will decrease
* causing the PPS of the strategy to increase.
*
* @return . Total amount of shares outstanding.
*/
function totalSupply() external view returns (uint256) {
return _totalSupply(_strategyStorage());
}
/**
* @notice The amount of shares that the strategy would
* exchange for the amount of assets provided, in an
* ideal scenario where all the conditions are met.
*
* @param assets The amount of underlying.
* @return . Expected shares that `assets` represents.
*/
function convertToShares(uint256 assets) external view returns (uint256) {
return _convertToShares(_strategyStorage(), assets, Math.Rounding.Down);
}
/**
* @notice The amount of assets that the strategy would
* exchange for the amount of shares provided, in an
* ideal scenario where all the conditions are met.
*
* @param shares The amount of the strategies shares.
* @return . Expected amount of `asset` the shares represents.
*/
function convertToAssets(uint256 shares) external view returns (uint256) {
return _convertToAssets(_strategyStorage(), shares, Math.Rounding.Down);
}
/**
* @notice Allows an on-chain or off-chain user to simulate
* the effects of their deposit at the current block, given
* current on-chain conditions.
* @dev This will round down.
*
* @param assets The amount of `asset` to deposits.
* @return . Expected shares that would be issued.
*/
function previewDeposit(uint256 assets) external view returns (uint256) {
return _convertToShares(_strategyStorage(), assets, Math.Rounding.Down);
}
/**
* @notice Allows an on-chain or off-chain user to simulate
* the effects of their mint at the current block, given
* current on-chain conditions.
* @dev This is used instead of convertToAssets so that it can
* round up for safer mints.
*
* @param shares The amount of shares to mint.
* @return . The needed amount of `asset` for the mint.
*/
function previewMint(uint256 shares) external view returns (uint256) {
return _convertToAssets(_strategyStorage(), shares, Math.Rounding.Up);
}
/**
* @notice Allows an on-chain or off-chain user to simulate
* the effects of their withdrawal at the current block,
* given current on-chain conditions.
* @dev This is used instead of convertToShares so that it can
* round up for safer withdraws.
*
* @param assets The amount of `asset` that would be withdrawn.
* @return . The amount of shares that would be burnt.
*/
function previewWithdraw(uint256 assets) external view returns (uint256) {
return _convertToShares(_strategyStorage(), assets, Math.Rounding.Up);
}
/**
* @notice Allows an on-chain or off-chain user to simulate
* the effects of their redemption at the current block,
* given current on-chain conditions.
* @dev This will round down.
*
* @param shares The amount of shares that would be redeemed.
* @return . The amount of `asset` that would be returned.
*/
function previewRedeem(uint256 shares) external view returns (uint256) {
return _convertToAssets(_strategyStorage(), shares, Math.Rounding.Down);
}
/**
* @notice Total number of underlying assets that can
* be deposited into the strategy, where `receiver`
* corresponds to the receiver of the shares of a {deposit} call.
*
* @param receiver The address receiving the shares.
* @return . The max that `receiver` can deposit in `asset`.
*/
function maxDeposit(address receiver) external view returns (uint256) {
return _maxDeposit(_strategyStorage(), receiver);
}
/**
* @notice Total number of shares that can be minted to `receiver`
* of a {mint} call.
*
* @param receiver The address receiving the shares.
* @return _maxMint The max that `receiver` can mint in shares.
*/
function maxMint(address receiver) external view returns (uint256) {
return _maxMint(_strategyStorage(), receiver);
}
/**
* @notice Total number of underlying assets that can be
* withdrawn from the strategy by `owner`, where `owner`
* corresponds to the msg.sender of a {redeem} call.
*
* @param owner The owner of the shares.
* @return _maxWithdraw Max amount of `asset` that can be withdrawn.
*/
function maxWithdraw(address owner) external view returns (uint256) {
return _maxWithdraw(_strategyStorage(), owner);
}
/**
* @notice Variable `maxLoss` is ignored.
* @dev Accepts a `maxLoss` variable in order to match the multi
* strategy vaults ABI.
*/
function maxWithdraw(
address owner,
uint256 /*maxLoss*/
) external view returns (uint256) {
return _maxWithdraw(_strategyStorage(), owner);
}
/**
* @notice Total number of strategy shares that can be
* redeemed from the strategy by `owner`, where `owner`
* corresponds to the msg.sender of a {redeem} call.
*
* @param owner The owner of the shares.
* @return _maxRedeem Max amount of shares that can be redeemed.
*/
function maxRedeem(address owner) external view returns (uint256) {
return _maxRedeem(_strategyStorage(), owner);
}
/**
* @notice Variable `maxLoss` is ignored.
* @dev Accepts a `maxLoss` variable in order to match the multi
* strategy vaults ABI.
*/
function maxRedeem(
address owner,
uint256 /*maxLoss*/
) external view returns (uint256) {
return _maxRedeem(_strategyStorage(), owner);
}
/*//////////////////////////////////////////////////////////////
INTERNAL 4626 VIEW METHODS
//////////////////////////////////////////////////////////////*/
/// @dev Internal implementation of {totalAssets}.
function _totalAssets(
StrategyData storage S
) internal view returns (uint256) {
return S.totalAssets;
}
/// @dev Internal implementation of {totalSupply}.
function _totalSupply(
StrategyData storage S
) internal view returns (uint256) {
return S.totalSupply - _unlockedShares(S);
}
/// @dev Internal implementation of {convertToShares}.
function _convertToShares(
StrategyData storage S,
uint256 assets,
Math.Rounding _rounding
) internal view returns (uint256) {
// Saves an extra SLOAD if values are non-zero.
uint256 totalSupply_ = _totalSupply(S);
// If supply is 0, PPS = 1.
if (totalSupply_ == 0) return assets;
uint256 totalAssets_ = _totalAssets(S);
// If assets are 0 but supply is not PPS = 0.
if (totalAssets_ == 0) return 0;
return assets.mulDiv(totalSupply_, totalAssets_, _rounding);
}
/// @dev Internal implementation of {convertToAssets}.
function _convertToAssets(
StrategyData storage S,
uint256 shares,
Math.Rounding _rounding
) internal view returns (uint256) {
// Saves an extra SLOAD if totalSupply() is non-zero.
uint256 supply = _totalSupply(S);
return
supply == 0
? shares
: shares.mulDiv(_totalAssets(S), supply, _rounding);
}
/// @dev Internal implementation of {maxDeposit}.
function _maxDeposit(
StrategyData storage S,
address receiver
) internal view returns (uint256) {
// Cannot deposit when shutdown or to the strategy.
if (S.shutdown || receiver == address(this)) return 0;
return IBaseStrategy(address(this)).availableDepositLimit(receiver);
}
/// @dev Internal implementation of {maxMint}.
function _maxMint(
StrategyData storage S,
address receiver
) internal view returns (uint256 maxMint_) {
// Cannot mint when shutdown or to the strategy.
if (S.shutdown || receiver == address(this)) return 0;
maxMint_ = IBaseStrategy(address(this)).availableDepositLimit(receiver);
if (maxMint_ != type(uint256).max) {
maxMint_ = _convertToShares(S, maxMint_, Math.Rounding.Down);
}
}
/// @dev Internal implementation of {maxWithdraw}.
function _maxWithdraw(
StrategyData storage S,
address owner
) internal view returns (uint256 maxWithdraw_) {
// Get the max the owner could withdraw currently.
maxWithdraw_ = IBaseStrategy(address(this)).availableWithdrawLimit(
owner
);
// If there is no limit enforced.
if (maxWithdraw_ == type(uint256).max) {
// Saves a min check if there is no withdrawal limit.
maxWithdraw_ = _convertToAssets(
S,
_balanceOf(S, owner),
Math.Rounding.Down
);
} else {
maxWithdraw_ = Math.min(
_convertToAssets(S, _balanceOf(S, owner), Math.Rounding.Down),
maxWithdraw_
);
}
}
/// @dev Internal implementation of {maxRedeem}.
function _maxRedeem(
StrategyData storage S,
address owner
) internal view returns (uint256 maxRedeem_) {
// Get the max the owner could withdraw currently.
maxRedeem_ = IBaseStrategy(address(this)).availableWithdrawLimit(owner);
// Conversion would overflow and saves a min check if there is no withdrawal limit.
if (maxRedeem_ == type(uint256).max) {
maxRedeem_ = _balanceOf(S, owner);
} else {
maxRedeem_ = Math.min(
// Can't redeem more than the balance.
_convertToShares(S, maxRedeem_, Math.Rounding.Down),
_balanceOf(S, owner)
);
}
}
/*//////////////////////////////////////////////////////////////
INTERNAL 4626 WRITE METHODS
//////////////////////////////////////////////////////////////*/
/**
* @dev Function to be called during {deposit} and {mint}.
*
* This function handles all logic including transfers,
* minting and accounting.
*
* We do all external calls before updating any internal
* values to prevent view reentrancy issues from the token
* transfers or the _deployFunds() calls.
*/
function _deposit(
StrategyData storage S,
address receiver,
uint256 assets,
uint256 shares
) internal {
// Cache storage variables used more than once.
ERC20 _asset = S.asset;
// Need to transfer before minting or ERC777s could reenter.
_asset.safeTransferFrom(msg.sender, address(this), assets);
// We can deploy the full loose balance currently held.
IBaseStrategy(address(this)).deployFunds(
_asset.balanceOf(address(this))
);
// Adjust total Assets.
S.totalAssets += assets;
// mint shares
_mint(S, receiver, shares);
emit Deposit(msg.sender, receiver, assets, shares);
}
/**
* @dev To be called during {redeem} and {withdraw}.
*
* This will handle all logic, transfers and accounting
* in order to service the withdraw request.
*
* If we are not able to withdraw the full amount needed, it will
* be counted as a loss and passed on to the user.
*/
function _withdraw(
StrategyData storage S,
address receiver,
address owner,
uint256 assets,
uint256 shares,
uint256 maxLoss
) internal returns (uint256) {
require(receiver != address(0), "ZERO ADDRESS");
require(maxLoss <= MAX_BPS, "exceeds MAX_BPS");
// Spend allowance if applicable.
if (msg.sender != owner) {
_spendAllowance(S, owner, msg.sender, shares);
}
// Cache `asset` since it is used multiple times..
ERC20 _asset = S.asset;
uint256 idle = _asset.balanceOf(address(this));
uint256 loss;
// Check if we need to withdraw funds.
if (idle < assets) {
// Tell Strategy to free what we need.
unchecked {
IBaseStrategy(address(this)).freeFunds(assets - idle);
}
// Return the actual amount withdrawn. Adjust for potential under withdraws.
idle = _asset.balanceOf(address(this));
// If we didn't get enough out then we have a loss.
if (idle < assets) {
unchecked {
loss = assets - idle;
}
// If a non-default max loss parameter was set.
if (maxLoss < MAX_BPS) {
// Make sure we are within the acceptable range.
require(
loss <= (assets * maxLoss) / MAX_BPS,
"too much loss"
);
}
// Lower the amount to be withdrawn.
assets = idle;
}
}
// Update assets based on how much we took.
S.totalAssets -= (assets + loss);
_burn(S, owner, shares);
// Transfer the amount of underlying to the receiver.
_asset.safeTransfer(receiver, assets);
emit Withdraw(msg.sender, receiver, owner, assets, shares);
// Return the actual amount of assets withdrawn.
return assets;
}
/*//////////////////////////////////////////////////////////////
PROFIT REPORTING
//////////////////////////////////////////////////////////////*/
/**
* @notice Function for keepers to call to harvest and record all
* profits accrued.
*
* @dev This will account for any gains/losses since the last report
* and charge fees accordingly.
*
* Any profit over the fees charged will be immediately locked
* so there is no change in PricePerShare. Then slowly unlocked
* over the `maxProfitUnlockTime` each second based on the
* calculated `profitUnlockingRate`.
*
* In case of a loss it will first attempt to offset the loss
* with any remaining locked shares from the last report in
* order to reduce any negative impact to PPS.
*
* Will then recalculate the new time to unlock profits over and the
* rate based on a weighted average of any remaining time from the
* last report and the new amount of shares to be locked.
*
* @return profit The notional amount of gain if any since the last
* report in terms of `asset`.
* @return loss The notional amount of loss if any since the last
* report in terms of `asset`.
*/
function report()
external
nonReentrant
onlyKeepers
returns (uint256 profit, uint256 loss)
{
// Cache storage pointer since its used repeatedly.
StrategyData storage S = _strategyStorage();
// Tell the strategy to report the real total assets it has.
// It should do all reward selling and redepositing now and
// account for deployed and loose `asset` so we can accurately
// account for all funds including those potentially airdropped
// and then have any profits immediately locked.
uint256 newTotalAssets = IBaseStrategy(address(this))
.harvestAndReport();
uint256 oldTotalAssets = _totalAssets(S);
// Get the amount of shares we need to burn from previous reports.
uint256 sharesToBurn = _unlockedShares(S);
// Initialize variables needed throughout.
uint256 totalFees;
uint256 protocolFees;
uint256 sharesToLock;
uint256 _profitMaxUnlockTime = S.profitMaxUnlockTime;
// Calculate profit/loss.
if (newTotalAssets > oldTotalAssets) {
// We have a profit.
unchecked {
profit = newTotalAssets - oldTotalAssets;
}
// We need to get the equivalent amount of shares
// at the current PPS before any minting or burning.
sharesToLock = _convertToShares(S, profit, Math.Rounding.Down);
// Cache the performance fee.
uint16 fee = S.performanceFee;
uint256 totalFeeShares;
// If we are charging a performance fee
if (fee != 0) {
// Asses performance fees.
unchecked {
// Get in `asset` for the event.
totalFees = (profit * fee) / MAX_BPS;
// And in shares for the payment.
totalFeeShares = (sharesToLock * fee) / MAX_BPS;
}
// Get the protocol fee config from the factory.
(
uint16 protocolFeeBps,
address protocolFeesRecipient
) = IFactory(FACTORY).protocol_fee_config();
uint256 protocolFeeShares;
// Check if there is a protocol fee to charge.
if (protocolFeeBps != 0) {
unchecked {
// Calculate protocol fees based on the performance Fees.
protocolFeeShares =
(totalFeeShares * protocolFeeBps) /
MAX_BPS;
// Need amount in underlying for event.
protocolFees = (totalFees * protocolFeeBps) / MAX_BPS;
}
// Mint the protocol fees to the recipient.
_mint(S, protocolFeesRecipient, protocolFeeShares);
}
// Mint the difference to the strategy fee recipient.
unchecked {
_mint(
S,
S.performanceFeeRecipient,
totalFeeShares - protocolFeeShares
);
}
}
// Check if we are locking profit.
if (_profitMaxUnlockTime != 0) {
// lock (profit - fees)
unchecked {
sharesToLock -= totalFeeShares;
}
// If we are burning more than re-locking.
if (sharesToBurn > sharesToLock) {
// Burn the difference
unchecked {
_burn(S, address(this), sharesToBurn - sharesToLock);
}
} else if (sharesToLock > sharesToBurn) {
// Mint the shares to lock the strategy.
unchecked {
_mint(S, address(this), sharesToLock - sharesToBurn);
}
}
}
} else {
// Expect we have a loss.
unchecked {
loss = oldTotalAssets - newTotalAssets;
}
// Check in case `else` was due to being equal.
if (loss != 0) {
// We will try and burn the unlocked shares and as much from any
// pending profit still unlocking to offset the loss to prevent any PPS decline post report.
sharesToBurn = Math.min(
// Cannot burn more than we have.
S.balances[address(this)],
// Try and burn both the shares already unlocked and the amount for the loss.
_convertToShares(S, loss, Math.Rounding.Down) + sharesToBurn
);
}
// Check if there is anything to burn.
if (sharesToBurn != 0) {
_burn(S, address(this), sharesToBurn);
}
}
// Update unlocking rate and time to fully unlocked.
uint256 totalLockedShares = S.balances[address(this)];
if (totalLockedShares != 0) {
uint256 previouslyLockedTime;
uint96 _fullProfitUnlockDate = S.fullProfitUnlockDate;
// Check if we need to account for shares still unlocking.
if (_fullProfitUnlockDate > block.timestamp) {
unchecked {
// There will only be previously locked shares if time remains.
// We calculate this here since it should be rare.
previouslyLockedTime =
(_fullProfitUnlockDate - block.timestamp) *
(totalLockedShares - sharesToLock);
}
}
// newProfitLockingPeriod is a weighted average between the remaining
// time of the previously locked shares and the profitMaxUnlockTime.
uint256 newProfitLockingPeriod = (previouslyLockedTime +
sharesToLock *
_profitMaxUnlockTime) / totalLockedShares;
// Calculate how many shares unlock per second.
S.profitUnlockingRate =
(totalLockedShares * MAX_BPS_EXTENDED) /
newProfitLockingPeriod;
// Calculate how long until the full amount of shares is unlocked.
S.fullProfitUnlockDate = uint96(
block.timestamp + newProfitLockingPeriod
);
} else {
// Only setting this to 0 will turn in the desired effect,
// no need to update profitUnlockingRate.
S.fullProfitUnlockDate = 0;
}
// Update the new total assets value.
S.totalAssets = newTotalAssets;
S.lastReport = uint96(block.timestamp);
// Emit event with info
emit Reported(
profit,
loss,
protocolFees, // Protocol fees
totalFees - protocolFees // Performance Fees
);
}
/**
* @notice Get how many shares have been unlocked since last report.
* @return . The amount of shares that have unlocked.
*/
function unlockedShares() external view returns (uint256) {
return _unlockedShares(_strategyStorage());
}
/**
* @dev To determine how many of the shares that were locked during the last
* report have since unlocked.
*
* If the `fullProfitUnlockDate` has passed the full strategy's balance will
* count as unlocked.
*
* @return unlocked The amount of shares that have unlocked.
*/
function _unlockedShares(
StrategyData storage S
) internal view returns (uint256 unlocked) {
uint96 _fullProfitUnlockDate = S.fullProfitUnlockDate;
if (_fullProfitUnlockDate > block.timestamp) {
unchecked {
unlocked =
(S.profitUnlockingRate * (block.timestamp - S.lastReport)) /
MAX_BPS_EXTENDED;
}
} else if (_fullProfitUnlockDate != 0) {
// All shares have been unlocked.
unlocked = S.balances[address(this)];
}
}
/*//////////////////////////////////////////////////////////////
TENDING
//////////////////////////////////////////////////////////////*/
/**
* @notice For a 'keeper' to 'tend' the strategy if a custom
* tendTrigger() is implemented.
*
* @dev Both 'tendTrigger' and '_tend' will need to be overridden
* for this to be used.
*
* This will callback the internal '_tend' call in the BaseStrategy
* with the total current amount available to the strategy to deploy.
*
* This is a permissioned function so if desired it could
* be used for illiquid or manipulatable strategies to compound
* rewards, perform maintenance or deposit/withdraw funds.
*
* This will not cause any change in PPS. Total assets will
* be the same before and after.
*
* A report() call will be needed to record any profits or losses.
*/
function tend() external nonReentrant onlyKeepers {
// Tend the strategy with the current loose balance.
IBaseStrategy(address(this)).tendThis(
_strategyStorage().asset.balanceOf(address(this))
);
}
/*//////////////////////////////////////////////////////////////
STRATEGY SHUTDOWN
//////////////////////////////////////////////////////////////*/
/**
* @notice Used to shutdown the strategy preventing any further deposits.
* @dev Can only be called by the current `management` or `emergencyAdmin`.
*
* This will stop any new {deposit} or {mint} calls but will
* not prevent {withdraw} or {redeem}. It will also still allow for
* {tend} and {report} so that management can report any last losses
* in an emergency as well as provide any maintenance to allow for full
* withdraw.
*
* This is a one way switch and can never be set back once shutdown.
*/
function shutdownStrategy() external onlyEmergencyAuthorized {
_strategyStorage().shutdown = true;
emit StrategyShutdown();
}
/**
* @notice To manually withdraw funds from the yield source after a
* strategy has been shutdown.
* @dev This can only be called post {shutdownStrategy}.
*
* This will never cause a change in PPS. Total assets will
* be the same before and after.
*
* A strategist will need to override the {_emergencyWithdraw} function
* in their strategy for this to work.
*
* @param amount The amount of asset to attempt to free.
*/
function emergencyWithdraw(
uint256 amount
) external nonReentrant onlyEmergencyAuthorized {
// Make sure the strategy has been shutdown.
require(_strategyStorage().shutdown, "not shutdown");
// Withdraw from the yield source.
IBaseStrategy(address(this)).shutdownWithdraw(amount);
}
/*//////////////////////////////////////////////////////////////
GETTER FUNCTIONS
//////////////////////////////////////////////////////////////*/
/**
* @notice Get the underlying asset for the strategy.
* @return . The underlying asset.
*/
function asset() external view returns (address) {
return address(_strategyStorage().asset);
}
/**
* @notice Get the API version for this TokenizedStrategy.
* @return . The API version for this TokenizedStrategy
*/
function apiVersion() external pure returns (string memory) {
return API_VERSION;
}
/**
* @notice Get the current address that controls the strategy.
* @return . Address of management
*/
function management() external view returns (address) {
return _strategyStorage().management;
}
/**
* @notice Get the current pending management address if any.
* @return . Address of pendingManagement
*/
function pendingManagement() external view returns (address) {
return _strategyStorage().pendingManagement;
}
/**
* @notice Get the current address that can call tend and report.
* @return . Address of the keeper
*/
function keeper() external view returns (address) {
return _strategyStorage().keeper;
}
/**
* @notice Get the current address that can shutdown and emergency withdraw.
* @return . Address of the emergencyAdmin
*/
function emergencyAdmin() external view returns (address) {
return _strategyStorage().emergencyAdmin;
}
/**
* @notice Get the current performance fee charged on profits.
* denominated in Basis Points where 10_000 == 100%
* @return . Current performance fee.
*/
function performanceFee() external view returns (uint16) {
return _strategyStorage().performanceFee;
}
/**
* @notice Get the current address that receives the performance fees.
* @return . Address of performanceFeeRecipient
*/
function performanceFeeRecipient() external view returns (address) {
return _strategyStorage().performanceFeeRecipient;
}
/**
* @notice Gets the timestamp at which all profits will be unlocked.
* @return . The full profit unlocking timestamp
*/
function fullProfitUnlockDate() external view returns (uint256) {
return uint256(_strategyStorage().fullProfitUnlockDate);
}
/**
* @notice The per second rate at which profits are unlocking.
* @dev This is denominated in EXTENDED_BPS decimals.
* @return . The current profit unlocking rate.
*/
function profitUnlockingRate() external view returns (uint256) {
return _strategyStorage().profitUnlockingRate;
}
/**
* @notice Gets the current time profits are set to unlock over.
* @return . The current profit max unlock time.
*/
function profitMaxUnlockTime() external view returns (uint256) {
return _strategyStorage().profitMaxUnlockTime;
}
/**
* @notice The timestamp of the last time protocol fees were charged.
* @return . The last report.
*/
function lastReport() external view returns (uint256) {
return uint256(_strategyStorage().lastReport);
}
/**
* @notice Get the price per share.
* @dev This value offers limited precision. Integrations that require
* exact precision should use convertToAssets or convertToShares instead.
*
* @return . The price per share.
*/
function pricePerShare() external view returns (uint256) {
StrategyData storage S = _strategyStorage();
return _convertToAssets(S, 10 ** S.decimals, Math.Rounding.Down);
}
/**
* @notice To check if the strategy has been shutdown.
* @return . Whether or not the strategy is shutdown.
*/
function isShutdown() external view returns (bool) {
return _strategyStorage().shutdown;
}
/*//////////////////////////////////////////////////////////////
SETTER FUNCTIONS
//////////////////////////////////////////////////////////////*/
/**
* @notice Step one of two to set a new address to be in charge of the strategy.
* @dev Can only be called by the current `management`. The address is
* set to pending management and will then have to call {acceptManagement}
* in order for the 'management' to officially change.
*
* Cannot set `management` to address(0).
*
* @param _management New address to set `pendingManagement` to.
*/
function setPendingManagement(address _management) external onlyManagement {
require(_management != address(0), "ZERO ADDRESS");
_strategyStorage().pendingManagement = _management;
emit UpdatePendingManagement(_management);
}
/**
* @notice Step two of two to set a new 'management' of the strategy.
* @dev Can only be called by the current `pendingManagement`.
*/
function acceptManagement() external {
StrategyData storage S = _strategyStorage();
require(msg.sender == S.pendingManagement, "!pending");
S.management = msg.sender;
S.pendingManagement = address(0);
emit UpdateManagement(msg.sender);
}
/**
* @notice Sets a new address to be in charge of tend and reports.
* @dev Can only be called by the current `management`.
*
* @param _keeper New address to set `keeper` to.
*/
function setKeeper(address _keeper) external onlyManagement {
_strategyStorage().keeper = _keeper;
emit UpdateKeeper(_keeper);
}
/**
* @notice Sets a new address to be able to shutdown the strategy.
* @dev Can only be called by the current `management`.
*
* @param _emergencyAdmin New address to set `emergencyAdmin` to.
*/
function setEmergencyAdmin(
address _emergencyAdmin
) external onlyManagement {
_strategyStorage().emergencyAdmin = _emergencyAdmin;
emit UpdateEmergencyAdmin(_emergencyAdmin);
}
/**
* @notice Sets the performance fee to be charged on reported gains.
* @dev Can only be called by the current `management`.
*
* Denominated in Basis Points. So 100% == 10_000.
* Cannot set greater than to MAX_FEE.
*
* @param _performanceFee New performance fee.
*/
function setPerformanceFee(uint16 _performanceFee) external onlyManagement {
require(_performanceFee <= MAX_FEE, "MAX FEE");
_strategyStorage().performanceFee = _performanceFee;
emit UpdatePerformanceFee(_performanceFee);
}
/**
* @notice Sets a new address to receive performance fees.
* @dev Can only be called by the current `management`.
*
* Cannot set to address(0).
*
* @param _performanceFeeRecipient New address to set `management` to.
*/
function setPerformanceFeeRecipient(
address _performanceFeeRecipient
) external onlyManagement {
require(_performanceFeeRecipient != address(0), "ZERO ADDRESS");
require(_performanceFeeRecipient != address(this), "Cannot be self");
_strategyStorage().performanceFeeRecipient = _performanceFeeRecipient;
emit UpdatePerformanceFeeRecipient(_performanceFeeRecipient);
}
/**
* @notice Sets the time for profits to be unlocked over.
* @dev Can only be called by the current `management`.
*
* Denominated in seconds and cannot be greater than 1 year.
*
* NOTE: Setting to 0 will cause all currently locked profit
* to be unlocked instantly and should be done with care.
*
* `profitMaxUnlockTime` is stored as a uint32 for packing but can
* be passed in as uint256 for simplicity.
*
* @param _profitMaxUnlockTime New `profitMaxUnlockTime`.
*/
function setProfitMaxUnlockTime(
uint256 _profitMaxUnlockTime
) external onlyManagement {
// Must be less than a year.
require(_profitMaxUnlockTime <= SECONDS_PER_YEAR, "too long");
StrategyData storage S = _strategyStorage();
// If we are setting to 0 we need to adjust amounts.
if (_profitMaxUnlockTime == 0) {
uint256 shares = S.balances[address(this)];
if (shares != 0) {
// Burn all shares if applicable.
_burn(S, address(this), shares);
}
// Reset unlocking variables
S.profitUnlockingRate = 0;
S.fullProfitUnlockDate = 0;
}
S.profitMaxUnlockTime = uint32(_profitMaxUnlockTime);
emit UpdateProfitMaxUnlockTime(_profitMaxUnlockTime);
}
/**
* @notice Updates the name for the strategy.
* @param _name The new name for the strategy.
*/
function setName(string calldata _name) external onlyManagement {
_strategyStorage().name = _name;
}
/*//////////////////////////////////////////////////////////////
ERC20 METHODS
//////////////////////////////////////////////////////////////*/
/**
* @notice Returns the name of the token.
* @return . The name the strategy is using for its token.
*/
function name() external view returns (string memory) {
return _strategyStorage().name;
}
/**
* @notice Returns the symbol of the strategies token.
* @dev Will be 'ys + asset symbol'.
* @return . The symbol the strategy is using for its tokens.
*/
function symbol() external view returns (string memory) {
return
string(abi.encodePacked("ys", _strategyStorage().asset.symbol()));
}
/**
* @notice Returns the number of decimals used to get its user representation.
* @return . The decimals used for the strategy and `asset`.
*/
function decimals() external view returns (uint8) {
return _strategyStorage().decimals;
}
/**
* @notice Returns the current balance for a given '_account'.
* @dev If the '_account` is the strategy then this will subtract
* the amount of shares that have been unlocked since the last profit first.
* @param account the address to return the balance for.
* @return . The current balance in y shares of the '_account'.
*/
function balanceOf(address account) external view returns (uint256) {
return _balanceOf(_strategyStorage(), account);
}
/// @dev Internal implementation of {balanceOf}.
function _balanceOf(
StrategyData storage S,
address account
) internal view returns (uint256) {
if (account == address(this)) {
return S.balances[account] - _unlockedShares(S);
}
return S.balances[account];
}
/**
* @notice Transfer '_amount` of shares from `msg.sender` to `to`.
* @dev
* Requirements:
*
* - `to` cannot be the zero address.
* - `to` cannot be the address of the strategy.
* - the caller must have a balance of at least `_amount`.
*
* @param to The address shares will be transferred to.
* @param amount The amount of shares to be transferred from sender.
* @return . a boolean value indicating whether the operation succeeded.
*/
function transfer(address to, uint256 amount) external returns (bool) {
_transfer(_strategyStorage(), msg.sender, to, amount);
return true;
}
/**
* @notice 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.
* @param owner The address who owns the shares.
* @param spender The address who would be moving the owners shares.
* @return . The remaining amount of shares of `owner` that could be moved by `spender`.
*/
function allowance(
address owner,
address spender
) external view returns (uint256) {
return _allowance(_strategyStorage(), owner, spender);
}
/// @dev Internal implementation of {allowance}.
function _allowance(
StrategyData storage S,
address owner,
address spender
) internal view returns (uint256) {
return S.allowances[owner][spender];
}
/**
* @notice Sets `amount` as the allowance of `spender` over the caller's tokens.
* @dev
*
* 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.
*
* 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.
*
* @param spender the address to allow the shares to be moved by.
* @param amount the amount of shares to allow `spender` to move.
* @return . a boolean value indicating whether the operation succeeded.
*/
function approve(address spender, uint256 amount) external returns (bool) {
_approve(_strategyStorage(), msg.sender, spender, amount);
return true;
}
/**
* @notice `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* @dev
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `to` cannot be the address of the strategy.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*
* Emits a {Transfer} event.
*
* @param from the address to be moving shares from.
* @param to the address to be moving shares to.
* @param amount the quantity of shares to move.
* @return . a boolean value indicating whether the operation succeeded.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool) {
StrategyData storage S = _strategyStorage();
_spendAllowance(S, from, msg.sender, amount);
_transfer(S, from, to, amount);
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `to` cannot be the strategies address
* - `from` must have a balance of at least `amount`.
*
*/
function _transfer(
StrategyData storage S,
address from,
address to,
uint256 amount
) internal {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(to != address(this), "ERC20 transfer to strategy");
S.balances[from] -= amount;
unchecked {
S.balances[to] += amount;
}
emit Transfer(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(
StrategyData storage S,
address account,
uint256 amount
) internal {
require(account != address(0), "ERC20: mint to the zero address");
S.totalSupply += amount;
unchecked {
S.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(
StrategyData storage S,
address account,
uint256 amount
) internal {
require(account != address(0), "ERC20: burn from the zero address");
S.balances[account] -= amount;
unchecked {
S.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(
StrategyData storage S,
address owner,
address spender,
uint256 amount
) internal {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
S.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(
StrategyData storage S,
address owner,
address spender,
uint256 amount
) internal {
uint256 currentAllowance = _allowance(S, owner, spender);
if (currentAllowance != type(uint256).max) {
require(
currentAllowance >= amount,
"ERC20: insufficient allowance"
);
unchecked {
_approve(S, owner, spender, currentAllowance - amount);
}
}
}
/*//////////////////////////////////////////////////////////////
EIP-2612 LOGIC
//////////////////////////////////////////////////////////////*/
/**
* @notice Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* @dev Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*
* @param _owner the address of the account to return the nonce for.
* @return . the current nonce for the account.
*/
function nonces(address _owner) external view returns (uint256) {
return _strategyStorage().nonces[_owner];
}
/**
* @notice Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* @dev IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external {
require(deadline >= block.timestamp, "ERC20: PERMIT_DEADLINE_EXPIRED");
// Unchecked because the only math done is incrementing
// the owner's nonce which cannot realistically overflow.
unchecked {
address recoveredAddress = ecrecover(
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR(),
keccak256(
abi.encode(
keccak256(
"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
),
owner,
spender,
value,
_strategyStorage().nonces[owner]++,
deadline
)
)
)
),
v,
r,
s
);
require(
recoveredAddress != address(0) && recoveredAddress == owner,
"ERC20: INVALID_SIGNER"
);
_approve(_strategyStorage(), recoveredAddress, spender, value);
}
}
/**
* @notice Returns the domain separator used in the encoding of the signature
* for {permit}, as defined by {EIP712}.
*
* @return . The domain separator that will be used for any {permit} calls.
*/
function DOMAIN_SEPARATOR() public view returns (bytes32) {
return
keccak256(
abi.encode(
keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
),
keccak256("Yearn Vault"),
keccak256(bytes(API_VERSION)),
block.chainid,
address(this)
)
);
}
/*//////////////////////////////////////////////////////////////
DEPLOYMENT
//////////////////////////////////////////////////////////////*/
/**
* @dev On contract creation we set `asset` for this contract to address(1).
* This prevents it from ever being initialized in the future.
* @param _factory Address of the factory of the same version for protocol fees.
*/
constructor(address _factory) {
FACTORY = _factory;
_strategyStorage().asset = ERC20(address(1));
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[{"internalType":"address","name":"_factory","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"assets","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"shares","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"strategy","type":"address"},{"indexed":true,"internalType":"address","name":"asset","type":"address"},{"indexed":false,"internalType":"string","name":"apiVersion","type":"string"}],"name":"NewTokenizedStrategy","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"profit","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"loss","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"protocolFees","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"performanceFees","type":"uint256"}],"name":"Reported","type":"event"},{"anonymous":false,"inputs":[],"name":"StrategyShutdown","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newEmergencyAdmin","type":"address"}],"name":"UpdateEmergencyAdmin","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newKeeper","type":"address"}],"name":"UpdateKeeper","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newManagement","type":"address"}],"name":"UpdateManagement","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newPendingManagement","type":"address"}],"name":"UpdatePendingManagement","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint16","name":"newPerformanceFee","type":"uint16"}],"name":"UpdatePerformanceFee","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newPerformanceFeeRecipient","type":"address"}],"name":"UpdatePerformanceFeeRecipient","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newProfitMaxUnlockTime","type":"uint256"}],"name":"UpdateProfitMaxUnlockTime","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":true,"internalType":"address","name":"receiver","type":"address"},{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"assets","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"shares","type":"uint256"}],"name":"Withdraw","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"FACTORY","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_FEE","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptManagement","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"apiVersion","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"asset","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"name":"convertToAssets","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"name":"convertToShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"}],"name":"deposit","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"emergencyAdmin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"fullProfitUnlockDate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_asset","type":"address"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"address","name":"_management","type":"address"},{"internalType":"address","name":"_performanceFeeRecipient","type":"address"},{"internalType":"address","name":"_keeper","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"isShutdown","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"keeper","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastReport","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"management","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"maxDeposit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"maxMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"maxRedeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"maxRedeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"maxWithdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"maxWithdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"}],"name":"mint","outputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingManagement","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"performanceFee","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"performanceFeeRecipient","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"name":"previewDeposit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"name":"previewMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"name":"previewRedeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"}],"name":"previewWithdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pricePerShare","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"profitMaxUnlockTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"profitUnlockingRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"maxLoss","type":"uint256"}],"name":"redeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"owner","type":"address"}],"name":"redeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"report","outputs":[{"internalType":"uint256","name":"profit","type":"uint256"},{"internalType":"uint256","name":"loss","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_sender","type":"address"}],"name":"requireEmergencyAuthorized","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_sender","type":"address"}],"name":"requireKeeperOrManagement","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_sender","type":"address"}],"name":"requireManagement","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_emergencyAdmin","type":"address"}],"name":"setEmergencyAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_keeper","type":"address"}],"name":"setKeeper","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_name","type":"string"}],"name":"setName","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_management","type":"address"}],"name":"setPendingManagement","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_performanceFee","type":"uint16"}],"name":"setPerformanceFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_performanceFeeRecipient","type":"address"}],"name":"setPerformanceFeeRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_profitMaxUnlockTime","type":"uint256"}],"name":"setProfitMaxUnlockTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"shutdownStrategy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tend","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalAssets","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unlockedShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"maxLoss","type":"uint256"}],"name":"withdraw","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"assets","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"address","name":"owner","type":"address"}],"name":"withdraw","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"stateMutability":"nonpayable","type":"function"}]Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000770d0d1fb036483ed4abb6d53c1c88fb277d812f
-----Decoded View---------------
Arg [0] : _factory (address): 0x770D0d1Fb036483Ed4AbB6d53c1C88fb277D812F
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000770d0d1fb036483ed4abb6d53c1c88fb277d812f
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0xD377919FA87120584B21279a491F82D5265A139c
Multichain Portfolio | 35 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.