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Contract Name:
SpectraWrappedMidasVault
Compiler Version
v0.8.20+commit.a1b79de6
Optimization Enabled:
No with 200 runs
Other Settings:
shanghai EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.20;
import {Spectra4626Wrapper, ERC4626Upgradeable} from "../utils/Spectra4626Wrapper.sol";
import {IERC4626} from "@openzeppelin/contracts/interfaces/IERC4626.sol";
import {IERC20Metadata, IERC20} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Math} from "@openzeppelin/contracts/utils/math/Math.sol";
import {IVault} from "./interfaces/IVault.sol";
import {IDataFeed} from "./interfaces/IVault.sol";
import {DecimalsCorrectionLibrary} from "./DecimalsCorrectionLibrary.sol";
/// @title SpectraWrappedMidasVault - Implementation of Spectra ERC4626 wrapper for a midasVault
/// @notice This contract wraps a MidasVault with the ERC4626 interface
/// @notice The contract is instantiated with the vault address, the Underlying address
/// @notice and the initial authority.
contract SpectraWrappedMidasVault is Spectra4626Wrapper {
using Math for uint256;
using DecimalsCorrectionLibrary for uint256;
using SafeERC20 for IERC20;
uint256 private UNDERLYING_DECIMALS;
address private midasDeposit;
address private midasRedeem;
IDataFeed private mTokenDataFeed;
uint256 private constant UNIT = 10**18;
uint256 private constant STABLECOIN_RATE = 10**18;
uint256 public constant ONE_HUNDRED_PERCENT = 100 * 100;
error NotImplemented();
constructor() {
_disableInitializers();
}
function initialize(
address _asset,
address _midasToken,
address _midasRedeem,
address _midasDeposit,
address _initAuth
) external initializer {
__Spectra4626Wrapper_init(_asset, _midasToken, _initAuth);
UNDERLYING_DECIMALS = IERC20Metadata(_asset).decimals();
midasDeposit = _midasDeposit;
midasRedeem = _midasRedeem;
mTokenDataFeed = IVault(_midasDeposit).mTokenDataFeed();
}
/*//////////////////////////////////////////////////////////////
ERC4626 GETTERS
//////////////////////////////////////////////////////////////*/
/** @dev See {IERC4626-maxDeposit}. */
function maxDeposit(
address
) public view override(IERC4626, ERC4626Upgradeable) returns (uint256) {
return 0;
}
/** @dev See {IERC4626-maxMint}. */
function maxMint(address) public view override(IERC4626, ERC4626Upgradeable) returns (uint256) {
return 0;
}
/// @dev See {IERC4626-maxWithdraw}. */
function maxWithdraw(
address /*owner*/
) public view override(IERC4626, ERC4626Upgradeable) returns (uint256) {
return 0;
}
/// @dev See {IERC4626-maxRedeem}. */
function maxRedeem(
address /*owner*/
) public view override(IERC4626, ERC4626Upgradeable) returns (uint256) {
return 0;
}
/// @dev See {IERC4626-previewDeposit}.
function previewDeposit(
uint256 assets
) public view override(IERC4626, ERC4626Upgradeable) returns (uint256) {
return 0;
}
/// @dev See {IERC4626-previewMint}.
function previewMint(
uint256 shares
) public view override(IERC4626, ERC4626Upgradeable) returns (uint256) {
return 0;
}
/// @dev See {IERC4626-previewWithdraw}.
function previewWithdraw(
uint256 assets
) public view override(IERC4626, ERC4626Upgradeable) returns (uint256) {
return 0;
}
/// @dev See {IERC4626-previewRedeem}.
function previewRedeem(
uint256 shares
) public view override(IERC4626, ERC4626Upgradeable) returns (uint256) {
if (shares == 0) {
return 0;
}
uint256 vaultSharesAmount = _previewUnwrap(shares, Math.Rounding.Floor);
return _midasVaultConvertToAssetsWithFees(vaultSharesAmount);
}
/*//////////////////////////////////////////////////////////////
ERC4626 PUBLIC OVERRIDES
//////////////////////////////////////////////////////////////*/
/// @dev See {IERC4626-deposit}.
function deposit(
uint256 assets,
address receiver
) public override(IERC4626, ERC4626Upgradeable) returns (uint256) {
revert NotImplemented();
}
/// @dev See {IERC4626-mint}.
function mint(
uint256 /*shares*/,
address /*receiver*/
) public override(IERC4626, ERC4626Upgradeable) returns (uint256) {
revert NotImplemented();
}
/// @dev See {IERC4626-withdraw}.
function withdraw(
uint256 /*assets*/,
address /*receiver*/,
address /*owner*/
) public override(IERC4626, ERC4626Upgradeable) returns (uint256) {
revert NotImplemented();
}
/// @dev See {IERC4626-redeem}.
function redeem(
uint256 /*shares*/,
address /*receiver*/,
address /*owner*/
) public override(IERC4626, ERC4626Upgradeable) returns (uint256) {
revert NotImplemented();
}
/*//////////////////////////////////////////////////////////////
ERC4626 INTERNAL OVERRIDES
//////////////////////////////////////////////////////////////*/
/// @dev Internal conversion function (from assets to shares) with support for rounding direction.
/// @param assets The amount of assets to convert.
/// @param rounding The rounding direction to use.
/// @return The amount of shares.
function _convertToShares(
uint256 assets,
Math.Rounding rounding
) internal view override(ERC4626Upgradeable) returns (uint256) {
uint256 vaultSharesAmount = _midasVaultConvertToShares(assets);
return _previewWrap(vaultSharesAmount, rounding);
}
/// @dev Internal conversion function (from shares to assets) with support for rounding direction.
/// @param shares The amount of shares to convert.
/// @param rounding The rounding direction to use.
/// @return The amount of assets.
function _convertToAssets(
uint256 shares,
Math.Rounding rounding
) internal view override(ERC4626Upgradeable) returns (uint256) {
uint256 vaultSharesAmount = _previewUnwrap(shares, rounding);
return _midasVaultConvertToAssets(vaultSharesAmount);
}
/*//////////////////////////////////////////////////////////////
INTERNALS
//////////////////////////////////////////////////////////////*/
/// @dev Internal midasVault conversion function (from assets to midasVault shares) rounding down.
function _midasVaultConvertToShares(
uint256 assets
) internal view returns (uint256) {
uint256 amountTokenInBase18 = assets.convertToBase18(UNDERLYING_DECIMALS);
IVault.TokenConfig memory tokenConfig = IVault(midasDeposit).tokensConfig(asset());
uint256 rate = _getTokenRate(tokenConfig.dataFeed, tokenConfig.stable);
require(rate > 0, "rate zero");
uint256 amountInUsd = (amountTokenInBase18 * rate) / (UNIT);
uint256 mTokenRate = _getTokenRate(address(mTokenDataFeed), false);
require(mTokenRate > 0, "rate zero");
uint256 amountMToken = (amountInUsd * (UNIT)) / mTokenRate;
return amountMToken;
}
/// @dev Internal midasVault conversion function (from midasVault shares to assets) rounding down.
function _midasVaultConvertToAssets(
uint256 shares
) internal view returns (uint256) {
uint256 mTokenRate = _getTokenRate(address(mTokenDataFeed), false);
require(mTokenRate > 0, "rate zero");
IVault.TokenConfig memory tokenConfig = IVault(midasRedeem).tokensConfig(asset());
uint256 tokenOutRate = _getTokenRate(tokenConfig.dataFeed, tokenConfig.stable);
require(tokenOutRate > 0, "rate zero");
uint256 amountTokenOut = ((shares * mTokenRate) / tokenOutRate).convertFromBase18(UNDERLYING_DECIMALS);
return amountTokenOut;
}
/// @dev Internal midasVault conversion function (from midasVault shares to assets) rounding down, taking into account fees.
function _midasVaultConvertToAssetsWithFees(
uint256 shares
) internal view returns (uint256) {
IVault.TokenConfig memory tokenConfig = IVault(midasRedeem).tokensConfig(asset());
uint256 feePercent = tokenConfig.fee + IVault(midasRedeem).instantFee();
if (feePercent > ONE_HUNDRED_PERCENT) feePercent = ONE_HUNDRED_PERCENT;
uint256 feeAmount = (shares * feePercent) / ONE_HUNDRED_PERCENT;
require(shares > feeAmount, "shares < fee");
uint256 sharesWithoutFee = shares - feeAmount;
uint256 mTokenRate = _getTokenRate(address(mTokenDataFeed), false);
require(mTokenRate > 0, "rate zero");
uint256 tokenOutRate = _getTokenRate(tokenConfig.dataFeed, tokenConfig.stable);
require(tokenOutRate > 0, "rate zero");
uint256 amountTokenOut = ((sharesWithoutFee * mTokenRate) / tokenOutRate).convertFromBase18(UNDERLYING_DECIMALS);
return amountTokenOut;
}
/**
* @dev get token rate depends on data feed and stablecoin flag
* @param dataFeed address of dataFeed from token config
* @param stable is stablecoin
*/
function _getTokenRate(address dataFeed, bool stable)
internal
view
virtual
returns (uint256)
{
// @dev if dataFeed returns rate, all peg checks passed
uint256 rate = IDataFeed(dataFeed).getDataInBase18();
if (stable) return STABLECOIN_RATE;
return rate;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.20;
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Math} from "@openzeppelin/contracts/utils/math/Math.sol";
import {IERC20Metadata, IERC20} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {IRewardsProxy} from "./interfaces/IRewardsProxy.sol";
import {ISpectra4626Wrapper, IERC4626} from "./interfaces/ISpectra4626Wrapper.sol";
import {AccessManagedUpgradeable} from "@openzeppelin/contracts-upgradeable/access/manager/AccessManagedUpgradeable.sol";
import {ERC4626Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/ERC4626Upgradeable.sol";
/// @dev This contract implements a wrapper to facilitate compliance of an interest-bearing vault with the ERC-4626 standard,
/// making it compatible for deploying a Spectra Principal Token.
abstract contract Spectra4626Wrapper is
ERC4626Upgradeable,
AccessManagedUpgradeable,
ISpectra4626Wrapper
{
using Math for uint256;
using SafeERC20 for IERC20;
/// @custom:storage-location erc7201:spectra.storage.Spectra4626Wrapper
struct Spectra4626WrapperStorage {
address _vaultShare;
address _rewardsProxy;
}
// keccak256(abi.encode(uint256(keccak256("spectra.storage.Spectra4626Wrapper")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant Spectra4626WrapperStorageLocation =
0x59ff202e9c72f33fbb7c107cbf037f949ff0624b6b8b7e53ab05f0c445903000;
function _getSpectra4626WrapperStorage()
private
pure
returns (Spectra4626WrapperStorage storage $)
{
assembly {
$.slot := Spectra4626WrapperStorageLocation
}
}
/// @dev Set the vault share contract to wrap, and calls parent initializers.
function __Spectra4626Wrapper_init(
address asset_,
address vaultShare_,
address initialAuthority_
) internal onlyInitializing {
__Spectra4626Wrapper_init_unchained(vaultShare_);
__ERC4626_init(IERC20(asset_));
__ERC20_init(_wrapperName(), _wrapperSymbol());
__AccessManaged_init(initialAuthority_);
}
function __Spectra4626Wrapper_init_unchained(address _vaultShare) internal onlyInitializing {
Spectra4626WrapperStorage storage $ = _getSpectra4626WrapperStorage();
$._vaultShare = _vaultShare;
}
/// @dev See {ISpectra4626Wrapper-vaultShare}.
function vaultShare() public view virtual returns (address) {
Spectra4626WrapperStorage storage $ = _getSpectra4626WrapperStorage();
return $._vaultShare;
}
/// @dev See {ISpectra4626Wrapper-totalVaultShares}.
function totalVaultShares() public view virtual returns (uint256) {
Spectra4626WrapperStorage storage $ = _getSpectra4626WrapperStorage();
return IERC20($._vaultShare).balanceOf(address(this));
}
/// @dev See {IERC4626-totalAssets}.
function totalAssets()
public
view
virtual
override(IERC4626, ERC4626Upgradeable)
returns (uint256)
{
return convertToAssets(totalSupply());
}
/// @dev See {ISpectra4626Wrapper-rewardsProxy}.
function rewardsProxy() public view returns (address) {
Spectra4626WrapperStorage storage $ = _getSpectra4626WrapperStorage();
return $._rewardsProxy;
}
/// @dev See {IERC20Metadata-decimals}.
function decimals()
public
view
virtual
override(IERC20Metadata, ERC4626Upgradeable)
returns (uint8)
{
return IERC20Metadata(vaultShare()).decimals() + _decimalsOffset();
}
/// @dev See {ISpectra4626Wrapper-previewWrap}.
function previewWrap(uint256 vaultShares) public view virtual returns (uint256) {
return _previewWrap(vaultShares, Math.Rounding.Floor);
}
/// @dev See {ISpectra4626Wrapper-previewUnwrap}.
function previewUnwrap(uint256 shares) public view virtual returns (uint256) {
return _previewUnwrap(shares, Math.Rounding.Floor);
}
/// @dev See {ISpectra4626Wrapper-wrap}.
function wrap(uint256 vaultShares, address receiver) public virtual returns (uint256) {
address caller = _msgSender();
uint256 sharesToMint = previewWrap(vaultShares);
IERC20(vaultShare()).safeTransferFrom(caller, address(this), vaultShares);
_mint(receiver, sharesToMint);
emit Wrap(caller, receiver, vaultShares, sharesToMint);
return sharesToMint;
}
/// @dev See {ISpectra4626Wrapper-wrap}.
function wrap(
uint256 vaultShares,
address receiver,
uint256 minShares
) public virtual returns (uint256) {
uint256 sharesToMint = wrap(vaultShares, receiver);
if (sharesToMint < minShares) {
revert ERC5143SlippageProtectionFailed();
}
return sharesToMint;
}
/// @dev See {ISpectra4626Wrapper-unwrap}.
function unwrap(
uint256 shares,
address receiver,
address owner
) public virtual returns (uint256) {
address caller = _msgSender();
if (caller != owner) {
_spendAllowance(owner, caller, shares);
}
uint256 vaultSharesToTransfer = previewUnwrap(shares);
_burn(owner, shares);
IERC20(vaultShare()).safeTransfer(receiver, vaultSharesToTransfer);
emit Unwrap(caller, receiver, owner, shares, vaultSharesToTransfer);
return vaultSharesToTransfer;
}
/// @dev See {ISpectra4626Wrapper-unwrap}.
function unwrap(
uint256 shares,
address receiver,
address owner,
uint256 minVaultShares
) public virtual returns (uint256) {
uint256 vaultSharesToTransfer = unwrap(shares, receiver, owner);
if (vaultSharesToTransfer < minVaultShares) {
revert ERC5143SlippageProtectionFailed();
}
return vaultSharesToTransfer;
}
/// @dev See {ISpectra4626Wrapper-claimRewards}. */
function claimRewards(bytes memory data) external virtual restricted {
address _rewardsProxy = rewardsProxy();
if (_rewardsProxy == address(0) || _rewardsProxy.code.length == 0) {
revert NoRewardsProxy();
}
bytes memory data2 = abi.encodeCall(IRewardsProxy(address(0)).claimRewards, (data));
(bool success, ) = _rewardsProxy.delegatecall(data2);
if (!success) {
revert ClaimRewardsFailed();
}
}
/// @dev See {ISpectra4626Wrapper-setRewardsProxy}.
function setRewardsProxy(address newRewardsProxy) public virtual restricted {
// Note: address zero is allowed in order to disable the claim proxy
_setRewardsProxy(newRewardsProxy);
}
/// @dev Internal conversion function (from vault shares to wrapper shares) with support for rounding direction.
function _previewWrap(
uint256 vaultShares,
Math.Rounding rounding
) internal view virtual returns (uint256) {
return
vaultShares.mulDiv(
totalSupply() + 10 ** _decimalsOffset(),
totalVaultShares() + 1,
rounding
);
}
/// @dev Internal conversion function (from wrapper shares to vault shares) with support for rounding direction.
function _previewUnwrap(
uint256 shares,
Math.Rounding rounding
) internal view virtual returns (uint256) {
return
shares.mulDiv(
totalVaultShares() + 1,
totalSupply() + 10 ** _decimalsOffset(),
rounding
);
}
/// @dev Internal getter to build wrapper name
function _wrapperName() internal view virtual returns (string memory wrapperName) {
wrapperName = string.concat(
"Spectra ERC4626 Wrapper: ",
IERC20Metadata(vaultShare()).name()
);
}
/// @dev Internal getter to build wrapper symbol
function _wrapperSymbol() internal view virtual returns (string memory wrapperSymbol) {
wrapperSymbol = string.concat("sw-", IERC20Metadata(vaultShare()).symbol());
}
/// @dev Updates the rewards proxy. Internal function with no access restriction.
function _setRewardsProxy(address newRewardsProxy) internal virtual {
Spectra4626WrapperStorage storage $ = _getSpectra4626WrapperStorage();
address oldRewardsProxy = $._rewardsProxy;
$._rewardsProxy = newRewardsProxy;
emit RewardsProxyUpdated(oldRewardsProxy, newRewardsProxy);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC4626.sol)
pragma solidity ^0.8.20;
import {IERC20} from "../token/ERC20/IERC20.sol";
import {IERC20Metadata} from "../token/ERC20/extensions/IERC20Metadata.sol";
/**
* @dev Interface of the ERC-4626 "Tokenized Vault Standard", as defined in
* https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
*/
interface IERC4626 is IERC20, IERC20Metadata {
event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);
event Withdraw(
address indexed sender,
address indexed receiver,
address indexed owner,
uint256 assets,
uint256 shares
);
/**
* @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.
*
* - MUST be an ERC-20 token contract.
* - MUST NOT revert.
*/
function asset() external view returns (address assetTokenAddress);
/**
* @dev Returns the total amount of the underlying asset that is “managed” by Vault.
*
* - SHOULD include any compounding that occurs from yield.
* - MUST be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT revert.
*/
function totalAssets() external view returns (uint256 totalManagedAssets);
/**
* @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal
* scenario where all the conditions are met.
*
* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT show any variations depending on the caller.
* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
* - MUST NOT revert.
*
* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
* from.
*/
function convertToShares(uint256 assets) external view returns (uint256 shares);
/**
* @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
* scenario where all the conditions are met.
*
* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
* - MUST NOT show any variations depending on the caller.
* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
* - MUST NOT revert.
*
* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
* from.
*/
function convertToAssets(uint256 shares) external view returns (uint256 assets);
/**
* @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,
* through a deposit call.
*
* - MUST return a limited value if receiver is subject to some deposit limit.
* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.
* - MUST NOT revert.
*/
function maxDeposit(address receiver) external view returns (uint256 maxAssets);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given
* current on-chain conditions.
*
* - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit
* call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called
* in the same transaction.
* - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the
* deposit would be accepted, regardless if the user has enough tokens approved, etc.
* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by depositing.
*/
function previewDeposit(uint256 assets) external view returns (uint256 shares);
/**
* @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.
*
* - MUST emit the Deposit event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* deposit execution, and are accounted for during deposit.
* - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not
* approving enough underlying tokens to the Vault contract, etc).
*
* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
*/
function deposit(uint256 assets, address receiver) external returns (uint256 shares);
/**
* @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.
* - MUST return a limited value if receiver is subject to some mint limit.
* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.
* - MUST NOT revert.
*/
function maxMint(address receiver) external view returns (uint256 maxShares);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given
* current on-chain conditions.
*
* - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call
* in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the
* same transaction.
* - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint
* would be accepted, regardless if the user has enough tokens approved, etc.
* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by minting.
*/
function previewMint(uint256 shares) external view returns (uint256 assets);
/**
* @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.
*
* - MUST emit the Deposit event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint
* execution, and are accounted for during mint.
* - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not
* approving enough underlying tokens to the Vault contract, etc).
*
* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
*/
function mint(uint256 shares, address receiver) external returns (uint256 assets);
/**
* @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the
* Vault, through a withdraw call.
*
* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
* - MUST NOT revert.
*/
function maxWithdraw(address owner) external view returns (uint256 maxAssets);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,
* given current on-chain conditions.
*
* - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw
* call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if
* called
* in the same transaction.
* - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though
* the withdrawal would be accepted, regardless if the user has enough shares, etc.
* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by depositing.
*/
function previewWithdraw(uint256 assets) external view returns (uint256 shares);
/**
* @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.
*
* - MUST emit the Withdraw event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* withdraw execution, and are accounted for during withdraw.
* - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner
* not having enough shares, etc).
*
* Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
* Those methods should be performed separately.
*/
function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);
/**
* @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,
* through a redeem call.
*
* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
* - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.
* - MUST NOT revert.
*/
function maxRedeem(address owner) external view returns (uint256 maxShares);
/**
* @dev Allows an on-chain or off-chain user to simulate the effects of their redeemption at the current block,
* given current on-chain conditions.
*
* - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call
* in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the
* same transaction.
* - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the
* redemption would be accepted, regardless if the user has enough shares, etc.
* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
* - MUST NOT revert.
*
* NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in
* share price or some other type of condition, meaning the depositor will lose assets by redeeming.
*/
function previewRedeem(uint256 shares) external view returns (uint256 assets);
/**
* @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.
*
* - MUST emit the Withdraw event.
* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
* redeem execution, and are accounted for during redeem.
* - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner
* not having enough shares, etc).
*
* NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
* Those methods should be performed separately.
*/
function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.20;
import {IERC20} from "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC-20 standard.
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.20;
import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";
import {Address} from "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC-20 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 An operation with an ERC-20 token failed.
*/
error SafeERC20FailedOperation(address token);
/**
* @dev Indicates a failed `decreaseAllowance` request.
*/
error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);
/**
* @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.encodeCall(token.transfer, (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.encodeCall(token.transferFrom, (from, to, 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);
forceApprove(token, spender, oldAllowance + value);
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
* value, non-reverting calls are assumed to be successful.
*/
function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
unchecked {
uint256 currentAllowance = token.allowance(address(this), spender);
if (currentAllowance < requestedDecrease) {
revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
}
forceApprove(token, spender, currentAllowance - requestedDecrease);
}
}
/**
* @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.encodeCall(token.approve, (spender, value));
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
* code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* Reverts if the returned value is other than `true`.
*/
function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
if (to.code.length == 0) {
safeTransfer(token, to, value);
} else if (!token.transferAndCall(to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
* has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* Reverts if the returned value is other than `true`.
*/
function transferFromAndCallRelaxed(
IERC1363 token,
address from,
address to,
uint256 value,
bytes memory data
) internal {
if (to.code.length == 0) {
safeTransferFrom(token, from, to, value);
} else if (!token.transferFromAndCall(from, to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
* code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
* Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
* once without retrying, and relies on the returned value to be true.
*
* Reverts if the returned value is other than `true`.
*/
function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
if (to.code.length == 0) {
forceApprove(token, to, value);
} else if (!token.approveAndCall(to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @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);
if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @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(token).code.length > 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)
pragma solidity ^0.8.20;
import {Panic} from "../Panic.sol";
import {SafeCast} from "./SafeCast.sol";
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Floor, // Toward negative infinity
Ceil, // Toward positive infinity
Trunc, // Toward zero
Expand // Away from zero
}
/**
* @dev Returns the addition of two unsigned integers, with an success flag (no overflow).
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an success flag (no overflow).
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an success flag (no overflow).
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a success flag (no division by zero).
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero).
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds towards infinity instead
* of rounding towards zero.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
if (b == 0) {
// Guarantee the same behavior as in a regular Solidity division.
Panic.panic(Panic.DIVISION_BY_ZERO);
}
// The following calculation ensures accurate ceiling division without overflow.
// Since a is non-zero, (a - 1) / b will not overflow.
// The largest possible result occurs when (a - 1) / b is type(uint256).max,
// but the largest value we can obtain is type(uint256).max - 1, which happens
// when a = type(uint256).max and b = 1.
unchecked {
return a == 0 ? 0 : (a - 1) / b + 1;
}
}
/**
* @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
* denominator == 0.
*
* 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 2²⁵⁶ and mod 2²⁵⁶ - 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 * 2²⁵⁶ + prod0.
uint256 prod0 = x * y; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0.
if (denominator <= prod1) {
Panic.panic(denominator == 0 ? Panic.DIVISION_BY_ZERO : Panic.UNDER_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.
uint256 twos = denominator & (0 - denominator);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2²⁵⁶ / 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 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such
// that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv ≡ 1 mod 2⁴.
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 2⁸
inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶
inverse *= 2 - denominator * inverse; // inverse mod 2³²
inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴
inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸
inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶
// 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 2²⁵⁶. Since the preconditions guarantee that the outcome is
// less than 2²⁵⁶, 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;
}
}
/**
* @dev 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) {
return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0);
}
/**
* @dev Calculate the modular multiplicative inverse of a number in Z/nZ.
*
* If n is a prime, then Z/nZ is a field. In that case all elements are inversible, expect 0.
* If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible.
*
* If the input value is not inversible, 0 is returned.
*
* NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Ferma's little theorem and get the
* inverse using `Math.modExp(a, n - 2, n)`.
*/
function invMod(uint256 a, uint256 n) internal pure returns (uint256) {
unchecked {
if (n == 0) return 0;
// The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version)
// Used to compute integers x and y such that: ax + ny = gcd(a, n).
// When the gcd is 1, then the inverse of a modulo n exists and it's x.
// ax + ny = 1
// ax = 1 + (-y)n
// ax ≡ 1 (mod n) # x is the inverse of a modulo n
// If the remainder is 0 the gcd is n right away.
uint256 remainder = a % n;
uint256 gcd = n;
// Therefore the initial coefficients are:
// ax + ny = gcd(a, n) = n
// 0a + 1n = n
int256 x = 0;
int256 y = 1;
while (remainder != 0) {
uint256 quotient = gcd / remainder;
(gcd, remainder) = (
// The old remainder is the next gcd to try.
remainder,
// Compute the next remainder.
// Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd
// where gcd is at most n (capped to type(uint256).max)
gcd - remainder * quotient
);
(x, y) = (
// Increment the coefficient of a.
y,
// Decrement the coefficient of n.
// Can overflow, but the result is casted to uint256 so that the
// next value of y is "wrapped around" to a value between 0 and n - 1.
x - y * int256(quotient)
);
}
if (gcd != 1) return 0; // No inverse exists.
return x < 0 ? (n - uint256(-x)) : uint256(x); // Wrap the result if it's negative.
}
}
/**
* @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m)
*
* Requirements:
* - modulus can't be zero
* - underlying staticcall to precompile must succeed
*
* IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make
* sure the chain you're using it on supports the precompiled contract for modular exponentiation
* at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise,
* the underlying function will succeed given the lack of a revert, but the result may be incorrectly
* interpreted as 0.
*/
function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) {
(bool success, uint256 result) = tryModExp(b, e, m);
if (!success) {
Panic.panic(Panic.DIVISION_BY_ZERO);
}
return result;
}
/**
* @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m).
* It includes a success flag indicating if the operation succeeded. Operation will be marked has failed if trying
* to operate modulo 0 or if the underlying precompile reverted.
*
* IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain
* you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in
* https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack
* of a revert, but the result may be incorrectly interpreted as 0.
*/
function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) {
if (m == 0) return (false, 0);
/// @solidity memory-safe-assembly
assembly {
let ptr := mload(0x40)
// | Offset | Content | Content (Hex) |
// |-----------|------------|--------------------------------------------------------------------|
// | 0x00:0x1f | size of b | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x20:0x3f | size of e | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x40:0x5f | size of m | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x60:0x7f | value of b | 0x<.............................................................b> |
// | 0x80:0x9f | value of e | 0x<.............................................................e> |
// | 0xa0:0xbf | value of m | 0x<.............................................................m> |
mstore(ptr, 0x20)
mstore(add(ptr, 0x20), 0x20)
mstore(add(ptr, 0x40), 0x20)
mstore(add(ptr, 0x60), b)
mstore(add(ptr, 0x80), e)
mstore(add(ptr, 0xa0), m)
// Given the result < m, it's guaranteed to fit in 32 bytes,
// so we can use the memory scratch space located at offset 0.
success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20)
result := mload(0x00)
}
}
/**
* @dev Variant of {modExp} that supports inputs of arbitrary length.
*/
function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) {
(bool success, bytes memory result) = tryModExp(b, e, m);
if (!success) {
Panic.panic(Panic.DIVISION_BY_ZERO);
}
return result;
}
/**
* @dev Variant of {tryModExp} that supports inputs of arbitrary length.
*/
function tryModExp(
bytes memory b,
bytes memory e,
bytes memory m
) internal view returns (bool success, bytes memory result) {
if (_zeroBytes(m)) return (false, new bytes(0));
uint256 mLen = m.length;
// Encode call args in result and move the free memory pointer
result = abi.encodePacked(b.length, e.length, mLen, b, e, m);
/// @solidity memory-safe-assembly
assembly {
let dataPtr := add(result, 0x20)
// Write result on top of args to avoid allocating extra memory.
success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen)
// Overwrite the length.
// result.length > returndatasize() is guaranteed because returndatasize() == m.length
mstore(result, mLen)
// Set the memory pointer after the returned data.
mstore(0x40, add(dataPtr, mLen))
}
}
/**
* @dev Returns whether the provided byte array is zero.
*/
function _zeroBytes(bytes memory byteArray) private pure returns (bool) {
for (uint256 i = 0; i < byteArray.length; ++i) {
if (byteArray[i] != 0) {
return false;
}
}
return true;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
* towards zero.
*
* This method is based on Newton's method for computing square roots; the algorithm is restricted to only
* using integer operations.
*/
function sqrt(uint256 a) internal pure returns (uint256) {
unchecked {
// Take care of easy edge cases when a == 0 or a == 1
if (a <= 1) {
return a;
}
// In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a
// sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between
// the current value as `ε_n = | x_n - sqrt(a) |`.
//
// For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root
// of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is
// bigger than any uint256.
//
// By noticing that
// `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)`
// we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar
// to the msb function.
uint256 aa = a;
uint256 xn = 1;
if (aa >= (1 << 128)) {
aa >>= 128;
xn <<= 64;
}
if (aa >= (1 << 64)) {
aa >>= 64;
xn <<= 32;
}
if (aa >= (1 << 32)) {
aa >>= 32;
xn <<= 16;
}
if (aa >= (1 << 16)) {
aa >>= 16;
xn <<= 8;
}
if (aa >= (1 << 8)) {
aa >>= 8;
xn <<= 4;
}
if (aa >= (1 << 4)) {
aa >>= 4;
xn <<= 2;
}
if (aa >= (1 << 2)) {
xn <<= 1;
}
// We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1).
//
// We can refine our estimation by noticing that the middle of that interval minimizes the error.
// If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2).
// This is going to be our x_0 (and ε_0)
xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2)
// From here, Newton's method give us:
// x_{n+1} = (x_n + a / x_n) / 2
//
// One should note that:
// x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a
// = ((x_n² + a) / (2 * x_n))² - a
// = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a
// = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²)
// = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²)
// = (x_n² - a)² / (2 * x_n)²
// = ((x_n² - a) / (2 * x_n))²
// ≥ 0
// Which proves that for all n ≥ 1, sqrt(a) ≤ x_n
//
// This gives us the proof of quadratic convergence of the sequence:
// ε_{n+1} = | x_{n+1} - sqrt(a) |
// = | (x_n + a / x_n) / 2 - sqrt(a) |
// = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) |
// = | (x_n - sqrt(a))² / (2 * x_n) |
// = | ε_n² / (2 * x_n) |
// = ε_n² / | (2 * x_n) |
//
// For the first iteration, we have a special case where x_0 is known:
// ε_1 = ε_0² / | (2 * x_0) |
// ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2)))
// ≤ 2**(2*e-4) / (3 * 2**(e-1))
// ≤ 2**(e-3) / 3
// ≤ 2**(e-3-log2(3))
// ≤ 2**(e-4.5)
//
// For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n:
// ε_{n+1} = ε_n² / | (2 * x_n) |
// ≤ (2**(e-k))² / (2 * 2**(e-1))
// ≤ 2**(2*e-2*k) / 2**e
// ≤ 2**(e-2*k)
xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5) -- special case, see above
xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9) -- general case with k = 4.5
xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18) -- general case with k = 9
xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36) -- general case with k = 18
xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72) -- general case with k = 36
xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144) -- general case with k = 72
// Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision
// ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either
// sqrt(a) or sqrt(a) + 1.
return xn - SafeCast.toUint(xn > a / xn);
}
}
/**
* @dev 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 + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a);
}
}
/**
* @dev Return the log in base 2 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
uint256 exp;
unchecked {
exp = 128 * SafeCast.toUint(value > (1 << 128) - 1);
value >>= exp;
result += exp;
exp = 64 * SafeCast.toUint(value > (1 << 64) - 1);
value >>= exp;
result += exp;
exp = 32 * SafeCast.toUint(value > (1 << 32) - 1);
value >>= exp;
result += exp;
exp = 16 * SafeCast.toUint(value > (1 << 16) - 1);
value >>= exp;
result += exp;
exp = 8 * SafeCast.toUint(value > (1 << 8) - 1);
value >>= exp;
result += exp;
exp = 4 * SafeCast.toUint(value > (1 << 4) - 1);
value >>= exp;
result += exp;
exp = 2 * SafeCast.toUint(value > (1 << 2) - 1);
value >>= exp;
result += exp;
result += SafeCast.toUint(value > 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 + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value);
}
}
/**
* @dev Return the log in base 10 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value);
}
}
/**
* @dev Return the log in base 256 of a positive value rounded towards zero.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
uint256 isGt;
unchecked {
isGt = SafeCast.toUint(value > (1 << 128) - 1);
value >>= isGt * 128;
result += isGt * 16;
isGt = SafeCast.toUint(value > (1 << 64) - 1);
value >>= isGt * 64;
result += isGt * 8;
isGt = SafeCast.toUint(value > (1 << 32) - 1);
value >>= isGt * 32;
result += isGt * 4;
isGt = SafeCast.toUint(value > (1 << 16) - 1);
value >>= isGt * 16;
result += isGt * 2;
result += SafeCast.toUint(value > (1 << 8) - 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 + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value);
}
}
/**
* @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
*/
function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
return uint8(rounding) % 2 == 1;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.20;
interface IVault {
/**
* @param dataFeed data feed token/USD address
* @param fee fee by token, 1% = 100
* @param allowance token allowance (decimals 18)
* @param stable indicates whether this token is considered a stable asset
*/
struct TokenConfig {
address dataFeed;
uint256 fee;
uint256 allowance;
bool stable;
}
/**
* @notice Allows instant deposits of a specified token.
* @dev Implementations must handle appropriate access control,
* pause checks, blacklist checks, etc.
* @param tokenIn The address of the token being deposited
* @param amountToken The amount of `tokenIn` to deposit
* @param minReceiveAmount The minimum amount of deposit tokens to receive
* @param referrerId An optional referrer identifier
*/
function depositInstant(
address tokenIn,
uint256 amountToken,
uint256 minReceiveAmount,
bytes32 referrerId
) external;
/**
* @notice Retrieves the TokenConfig for a given token
* @param token The asset token address
* @return The TokenConfig structure for the specified token
*/
function tokensConfig(address token) external view returns (TokenConfig memory);
function mTokenDataFeed() external view returns (IDataFeed);
function instantFee() external view returns (uint256);
}
interface IDataFeed {
/**
* @notice Retrieves the token's rate in 18 decimals
* @return The 18-decimal rate
*/
function getDataInBase18() external view returns (uint256);
}// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;
/**
* @title DecimalsCorrectionLibrary
* @author RedDuck Software
*/
library DecimalsCorrectionLibrary {
/**
* @dev converts `originalAmount` with `originalDecimals` into
* amount with `decidedDecimals`
* @param originalAmount amount to convert
* @param originalDecimals decimals of the original amount
* @param decidedDecimals decimals for the output amount
* @return amount converted amount with `decidedDecimals`
*/
function convert(
uint256 originalAmount,
uint256 originalDecimals,
uint256 decidedDecimals
) internal pure returns (uint256) {
if (originalAmount == 0) return 0;
if (originalDecimals == decidedDecimals) return originalAmount;
uint256 adjustedAmount;
if (originalDecimals > decidedDecimals) {
adjustedAmount =
originalAmount /
(10**(originalDecimals - decidedDecimals));
} else {
adjustedAmount =
originalAmount *
(10**(decidedDecimals - originalDecimals));
}
return adjustedAmount;
}
/**
* @dev converts `originalAmount` with decimals 18 into
* amount with `decidedDecimals`
* @param originalAmount amount to convert
* @param decidedDecimals decimals for the output amount
* @return amount converted amount with `decidedDecimals`
*/
function convertFromBase18(uint256 originalAmount, uint256 decidedDecimals)
internal
pure
returns (uint256)
{
return convert(originalAmount, 18, decidedDecimals);
}
/**
* @dev converts `originalAmount` with `originalDecimals` into
* amount with decimals 18
* @param originalAmount amount to convert
* @param originalDecimals decimals of the original amount
* @return amount converted amount with 18 decimals
*/
function convertToBase18(uint256 originalAmount, uint256 originalDecimals)
internal
pure
returns (uint256)
{
return convert(originalAmount, originalDecimals, 18);
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.20;
/// @dev Interface for the Rewards Proxy, designed to isolate the rewards claiming logic
/// from the logic of Spectra4626Wrapper instances.
interface IRewardsProxy {
/// @notice Claims rewards based on the provided data.
/// @dev This function should be called using `delegatecall`.
/// @dev The implementation of this function should handle the logic for claiming rewards
/// based on the input data. The specific format and structure of `data` should be defined
/// by the implementation.
/// @param data ABI-encoded data containing the necessary information to claim rewards.
function claimRewards(bytes memory data) external;
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.20;
import {IERC4626} from "@openzeppelin/contracts/interfaces/IERC4626.sol";
/// @dev Interface of Spectra4626Wrapper.
interface ISpectra4626Wrapper is IERC4626 {
/// @dev Emitted when vault shares are deposited in the wrapper.
event Wrap(
address indexed caller,
address indexed receiver,
uint256 vaultShares,
uint256 shares
);
/// @dev Emitted when vault shares are withdrawn from the wrapper.
event Unwrap(
address indexed caller,
address indexed receiver,
address indexed owner,
uint256 shares,
uint256 vaultShares
);
/// @dev Emitted when rewards proxy is updated.
event RewardsProxyUpdated(address oldRewardsProxy, address newRewardsProxy);
error ERC5143SlippageProtectionFailed();
error NoRewardsProxy();
error ClaimRewardsFailed();
/// @dev Returns the address of the wrapped vault share.
function vaultShare() external view returns (address);
/// @dev Returns the vault share balance of the wrapper.
function totalVaultShares() external view returns (uint256);
/// @dev Returns the rewards proxy of the wrapper.
function rewardsProxy() external view returns (address);
/// @dev Allows to preview the amount of minted wrapper shares for a given amount of deposited vault shares.
/// @param vaultShares The amount of vault shares to deposit.
/// @return The amount of minted vault shares.
function previewWrap(uint256 vaultShares) external view returns (uint256);
/// @dev Allows to preview the amount of withdrawn vault shares for a given amount of redeemed wrapper shares.
/// @param shares The amount of wrapper shares to redeem.
/// @return The amount of withdrawn vault shares.
function previewUnwrap(uint256 shares) external view returns (uint256);
/// @dev Allows the owner to deposit vault shares into the wrapper.
/// @param vaultShares The amount of vault shares to deposit.
/// @param receiver The address to receive the wrapper shares.
/// @return The amount of minted wrapper shares.
function wrap(uint256 vaultShares, address receiver) external returns (uint256);
/// @dev Allows the owner to deposit vault shares into the wrapper, with support for slippage protection.
/// @param vaultShares The amount of vault shares to deposit.
/// @param receiver The address to receive the wrapper shares.
/// @param minShares The minimum allowed wrapper shares from this deposit.
/// @return The amount of minted wrapper shares.
function wrap(
uint256 vaultShares,
address receiver,
uint256 minShares
) external returns (uint256);
/// @dev Allows the owner to withdraw vault shares from the wrapper.
/// @param shares The amount of wrapper shares to redeem.
/// @param receiver The address to receive the vault shares.
/// @param owner The address of the owner of the wrapper shares.
/// @return The amount of withdrawn vault shares.
function unwrap(uint256 shares, address receiver, address owner) external returns (uint256);
/// @dev Allows the owner to withdraw vault shares from the wrapper, with support for slippage protection.
/// @param shares The amount of wrapper shares to redeem.
/// @param receiver The address to receive the vault shares.
/// @param owner The address of the owner of the wrapper shares.
/// @param minVaultShares The minimum vault shares that should be returned.
/// @return The amount of withdrawn vault shares.
function unwrap(
uint256 shares,
address receiver,
address owner,
uint256 minVaultShares
) external returns (uint256);
/// @dev Setter for the rewards proxy.
/// @param newRewardsProxy The address of the new rewards proxy.
function setRewardsProxy(address newRewardsProxy) external;
/// @dev Claims rewards for the wrapped vault.
/// @param data The optional data used for claiming rewards.
function claimRewards(bytes calldata data) external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/manager/AccessManaged.sol)
pragma solidity ^0.8.20;
import {IAuthority} from "@openzeppelin/contracts/access/manager/IAuthority.sol";
import {AuthorityUtils} from "@openzeppelin/contracts/access/manager/AuthorityUtils.sol";
import {IAccessManager} from "@openzeppelin/contracts/access/manager/IAccessManager.sol";
import {IAccessManaged} from "@openzeppelin/contracts/access/manager/IAccessManaged.sol";
import {ContextUpgradeable} from "../../utils/ContextUpgradeable.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";
/**
* @dev This contract module makes available a {restricted} modifier. Functions decorated with this modifier will be
* permissioned according to an "authority": a contract like {AccessManager} that follows the {IAuthority} interface,
* implementing a policy that allows certain callers to access certain functions.
*
* IMPORTANT: The `restricted` modifier should never be used on `internal` functions, judiciously used in `public`
* functions, and ideally only used in `external` functions. See {restricted}.
*/
abstract contract AccessManagedUpgradeable is Initializable, ContextUpgradeable, IAccessManaged {
/// @custom:storage-location erc7201:openzeppelin.storage.AccessManaged
struct AccessManagedStorage {
address _authority;
bool _consumingSchedule;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.AccessManaged")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant AccessManagedStorageLocation = 0xf3177357ab46d8af007ab3fdb9af81da189e1068fefdc0073dca88a2cab40a00;
function _getAccessManagedStorage() private pure returns (AccessManagedStorage storage $) {
assembly {
$.slot := AccessManagedStorageLocation
}
}
/**
* @dev Initializes the contract connected to an initial authority.
*/
function __AccessManaged_init(address initialAuthority) internal onlyInitializing {
__AccessManaged_init_unchained(initialAuthority);
}
function __AccessManaged_init_unchained(address initialAuthority) internal onlyInitializing {
_setAuthority(initialAuthority);
}
/**
* @dev Restricts access to a function as defined by the connected Authority for this contract and the
* caller and selector of the function that entered the contract.
*
* [IMPORTANT]
* ====
* In general, this modifier should only be used on `external` functions. It is okay to use it on `public`
* functions that are used as external entry points and are not called internally. Unless you know what you're
* doing, it should never be used on `internal` functions. Failure to follow these rules can have critical security
* implications! This is because the permissions are determined by the function that entered the contract, i.e. the
* function at the bottom of the call stack, and not the function where the modifier is visible in the source code.
* ====
*
* [WARNING]
* ====
* Avoid adding this modifier to the https://docs.soliditylang.org/en/v0.8.20/contracts.html#receive-ether-function[`receive()`]
* function or the https://docs.soliditylang.org/en/v0.8.20/contracts.html#fallback-function[`fallback()`]. These
* functions are the only execution paths where a function selector cannot be unambiguosly determined from the calldata
* since the selector defaults to `0x00000000` in the `receive()` function and similarly in the `fallback()` function
* if no calldata is provided. (See {_checkCanCall}).
*
* The `receive()` function will always panic whereas the `fallback()` may panic depending on the calldata length.
* ====
*/
modifier restricted() {
_checkCanCall(_msgSender(), _msgData());
_;
}
/// @inheritdoc IAccessManaged
function authority() public view virtual returns (address) {
AccessManagedStorage storage $ = _getAccessManagedStorage();
return $._authority;
}
/// @inheritdoc IAccessManaged
function setAuthority(address newAuthority) public virtual {
address caller = _msgSender();
if (caller != authority()) {
revert AccessManagedUnauthorized(caller);
}
if (newAuthority.code.length == 0) {
revert AccessManagedInvalidAuthority(newAuthority);
}
_setAuthority(newAuthority);
}
/// @inheritdoc IAccessManaged
function isConsumingScheduledOp() public view returns (bytes4) {
AccessManagedStorage storage $ = _getAccessManagedStorage();
return $._consumingSchedule ? this.isConsumingScheduledOp.selector : bytes4(0);
}
/**
* @dev Transfers control to a new authority. Internal function with no access restriction. Allows bypassing the
* permissions set by the current authority.
*/
function _setAuthority(address newAuthority) internal virtual {
AccessManagedStorage storage $ = _getAccessManagedStorage();
$._authority = newAuthority;
emit AuthorityUpdated(newAuthority);
}
/**
* @dev Reverts if the caller is not allowed to call the function identified by a selector. Panics if the calldata
* is less than 4 bytes long.
*/
function _checkCanCall(address caller, bytes calldata data) internal virtual {
AccessManagedStorage storage $ = _getAccessManagedStorage();
(bool immediate, uint32 delay) = AuthorityUtils.canCallWithDelay(
authority(),
caller,
address(this),
bytes4(data[0:4])
);
if (!immediate) {
if (delay > 0) {
$._consumingSchedule = true;
IAccessManager(authority()).consumeScheduledOp(caller, data);
$._consumingSchedule = false;
} else {
revert AccessManagedUnauthorized(caller);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC4626.sol)
pragma solidity ^0.8.20;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {ERC20Upgradeable} from "../ERC20Upgradeable.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC4626} from "@openzeppelin/contracts/interfaces/IERC4626.sol";
import {Math} from "@openzeppelin/contracts/utils/math/Math.sol";
import {Initializable} from "../../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the ERC4626 "Tokenized Vault Standard" as defined in
* https://eips.ethereum.org/EIPS/eip-4626[EIP-4626].
*
* This extension allows the minting and burning of "shares" (represented using the ERC20 inheritance) in exchange for
* underlying "assets" through standardized {deposit}, {mint}, {redeem} and {burn} workflows. This contract extends
* the ERC20 standard. Any additional extensions included along it would affect the "shares" token represented by this
* contract and not the "assets" token which is an independent contract.
*
* [CAUTION]
* ====
* In empty (or nearly empty) ERC-4626 vaults, deposits are at high risk of being stolen through frontrunning
* with a "donation" to the vault that inflates the price of a share. This is variously known as a donation or inflation
* attack and is essentially a problem of slippage. Vault deployers can protect against this attack by making an initial
* deposit of a non-trivial amount of the asset, such that price manipulation becomes infeasible. Withdrawals may
* similarly be affected by slippage. Users can protect against this attack as well as unexpected slippage in general by
* verifying the amount received is as expected, using a wrapper that performs these checks such as
* https://github.com/fei-protocol/ERC4626#erc4626router-and-base[ERC4626Router].
*
* Since v4.9, this implementation uses virtual assets and shares to mitigate that risk. The `_decimalsOffset()`
* corresponds to an offset in the decimal representation between the underlying asset's decimals and the vault
* decimals. This offset also determines the rate of virtual shares to virtual assets in the vault, which itself
* determines the initial exchange rate. While not fully preventing the attack, analysis shows that the default offset
* (0) makes it non-profitable, as a result of the value being captured by the virtual shares (out of the attacker's
* donation) matching the attacker's expected gains. With a larger offset, the attack becomes orders of magnitude more
* expensive than it is profitable. More details about the underlying math can be found
* xref:erc4626.adoc#inflation-attack[here].
*
* The drawback of this approach is that the virtual shares do capture (a very small) part of the value being accrued
* to the vault. Also, if the vault experiences losses, the users try to exit the vault, the virtual shares and assets
* will cause the first user to exit to experience reduced losses in detriment to the last users that will experience
* bigger losses. Developers willing to revert back to the pre-v4.9 behavior just need to override the
* `_convertToShares` and `_convertToAssets` functions.
*
* To learn more, check out our xref:ROOT:erc4626.adoc[ERC-4626 guide].
* ====
*/
abstract contract ERC4626Upgradeable is Initializable, ERC20Upgradeable, IERC4626 {
using Math for uint256;
/// @custom:storage-location erc7201:openzeppelin.storage.ERC4626
struct ERC4626Storage {
IERC20 _asset;
uint8 _underlyingDecimals;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ERC4626")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant ERC4626StorageLocation = 0x0773e532dfede91f04b12a73d3d2acd361424f41f76b4fb79f090161e36b4e00;
function _getERC4626Storage() private pure returns (ERC4626Storage storage $) {
assembly {
$.slot := ERC4626StorageLocation
}
}
/**
* @dev Attempted to deposit more assets than the max amount for `receiver`.
*/
error ERC4626ExceededMaxDeposit(address receiver, uint256 assets, uint256 max);
/**
* @dev Attempted to mint more shares than the max amount for `receiver`.
*/
error ERC4626ExceededMaxMint(address receiver, uint256 shares, uint256 max);
/**
* @dev Attempted to withdraw more assets than the max amount for `receiver`.
*/
error ERC4626ExceededMaxWithdraw(address owner, uint256 assets, uint256 max);
/**
* @dev Attempted to redeem more shares than the max amount for `receiver`.
*/
error ERC4626ExceededMaxRedeem(address owner, uint256 shares, uint256 max);
/**
* @dev Set the underlying asset contract. This must be an ERC20-compatible contract (ERC20 or ERC777).
*/
function __ERC4626_init(IERC20 asset_) internal onlyInitializing {
__ERC4626_init_unchained(asset_);
}
function __ERC4626_init_unchained(IERC20 asset_) internal onlyInitializing {
ERC4626Storage storage $ = _getERC4626Storage();
(bool success, uint8 assetDecimals) = _tryGetAssetDecimals(asset_);
$._underlyingDecimals = success ? assetDecimals : 18;
$._asset = asset_;
}
/**
* @dev Attempts to fetch the asset decimals. A return value of false indicates that the attempt failed in some way.
*/
function _tryGetAssetDecimals(IERC20 asset_) private view returns (bool, uint8) {
(bool success, bytes memory encodedDecimals) = address(asset_).staticcall(
abi.encodeCall(IERC20Metadata.decimals, ())
);
if (success && encodedDecimals.length >= 32) {
uint256 returnedDecimals = abi.decode(encodedDecimals, (uint256));
if (returnedDecimals <= type(uint8).max) {
return (true, uint8(returnedDecimals));
}
}
return (false, 0);
}
/**
* @dev Decimals are computed by adding the decimal offset on top of the underlying asset's decimals. This
* "original" value is cached during construction of the vault contract. If this read operation fails (e.g., the
* asset has not been created yet), a default of 18 is used to represent the underlying asset's decimals.
*
* See {IERC20Metadata-decimals}.
*/
function decimals() public view virtual override(IERC20Metadata, ERC20Upgradeable) returns (uint8) {
ERC4626Storage storage $ = _getERC4626Storage();
return $._underlyingDecimals + _decimalsOffset();
}
/** @dev See {IERC4626-asset}. */
function asset() public view virtual returns (address) {
ERC4626Storage storage $ = _getERC4626Storage();
return address($._asset);
}
/** @dev See {IERC4626-totalAssets}. */
function totalAssets() public view virtual returns (uint256) {
ERC4626Storage storage $ = _getERC4626Storage();
return $._asset.balanceOf(address(this));
}
/** @dev See {IERC4626-convertToShares}. */
function convertToShares(uint256 assets) public view virtual returns (uint256) {
return _convertToShares(assets, Math.Rounding.Floor);
}
/** @dev See {IERC4626-convertToAssets}. */
function convertToAssets(uint256 shares) public view virtual returns (uint256) {
return _convertToAssets(shares, Math.Rounding.Floor);
}
/** @dev See {IERC4626-maxDeposit}. */
function maxDeposit(address) public view virtual returns (uint256) {
return type(uint256).max;
}
/** @dev See {IERC4626-maxMint}. */
function maxMint(address) public view virtual returns (uint256) {
return type(uint256).max;
}
/** @dev See {IERC4626-maxWithdraw}. */
function maxWithdraw(address owner) public view virtual returns (uint256) {
return _convertToAssets(balanceOf(owner), Math.Rounding.Floor);
}
/** @dev See {IERC4626-maxRedeem}. */
function maxRedeem(address owner) public view virtual returns (uint256) {
return balanceOf(owner);
}
/** @dev See {IERC4626-previewDeposit}. */
function previewDeposit(uint256 assets) public view virtual returns (uint256) {
return _convertToShares(assets, Math.Rounding.Floor);
}
/** @dev See {IERC4626-previewMint}. */
function previewMint(uint256 shares) public view virtual returns (uint256) {
return _convertToAssets(shares, Math.Rounding.Ceil);
}
/** @dev See {IERC4626-previewWithdraw}. */
function previewWithdraw(uint256 assets) public view virtual returns (uint256) {
return _convertToShares(assets, Math.Rounding.Ceil);
}
/** @dev See {IERC4626-previewRedeem}. */
function previewRedeem(uint256 shares) public view virtual returns (uint256) {
return _convertToAssets(shares, Math.Rounding.Floor);
}
/** @dev See {IERC4626-deposit}. */
function deposit(uint256 assets, address receiver) public virtual returns (uint256) {
uint256 maxAssets = maxDeposit(receiver);
if (assets > maxAssets) {
revert ERC4626ExceededMaxDeposit(receiver, assets, maxAssets);
}
uint256 shares = previewDeposit(assets);
_deposit(_msgSender(), receiver, assets, shares);
return shares;
}
/** @dev See {IERC4626-mint}.
*
* As opposed to {deposit}, minting is allowed even if the vault is in a state where the price of a share is zero.
* In this case, the shares will be minted without requiring any assets to be deposited.
*/
function mint(uint256 shares, address receiver) public virtual returns (uint256) {
uint256 maxShares = maxMint(receiver);
if (shares > maxShares) {
revert ERC4626ExceededMaxMint(receiver, shares, maxShares);
}
uint256 assets = previewMint(shares);
_deposit(_msgSender(), receiver, assets, shares);
return assets;
}
/** @dev See {IERC4626-withdraw}. */
function withdraw(uint256 assets, address receiver, address owner) public virtual returns (uint256) {
uint256 maxAssets = maxWithdraw(owner);
if (assets > maxAssets) {
revert ERC4626ExceededMaxWithdraw(owner, assets, maxAssets);
}
uint256 shares = previewWithdraw(assets);
_withdraw(_msgSender(), receiver, owner, assets, shares);
return shares;
}
/** @dev See {IERC4626-redeem}. */
function redeem(uint256 shares, address receiver, address owner) public virtual returns (uint256) {
uint256 maxShares = maxRedeem(owner);
if (shares > maxShares) {
revert ERC4626ExceededMaxRedeem(owner, shares, maxShares);
}
uint256 assets = previewRedeem(shares);
_withdraw(_msgSender(), receiver, owner, assets, shares);
return assets;
}
/**
* @dev Internal conversion function (from assets to shares) with support for rounding direction.
*/
function _convertToShares(uint256 assets, Math.Rounding rounding) internal view virtual returns (uint256) {
return assets.mulDiv(totalSupply() + 10 ** _decimalsOffset(), totalAssets() + 1, rounding);
}
/**
* @dev Internal conversion function (from shares to assets) with support for rounding direction.
*/
function _convertToAssets(uint256 shares, Math.Rounding rounding) internal view virtual returns (uint256) {
return shares.mulDiv(totalAssets() + 1, totalSupply() + 10 ** _decimalsOffset(), rounding);
}
/**
* @dev Deposit/mint common workflow.
*/
function _deposit(address caller, address receiver, uint256 assets, uint256 shares) internal virtual {
ERC4626Storage storage $ = _getERC4626Storage();
// If _asset is ERC777, `transferFrom` can trigger a reentrancy BEFORE the transfer happens through the
// `tokensToSend` hook. On the other hand, the `tokenReceived` hook, that is triggered after the transfer,
// calls the vault, which is assumed not malicious.
//
// Conclusion: we need to do the transfer before we mint so that any reentrancy would happen before the
// assets are transferred and before the shares are minted, which is a valid state.
// slither-disable-next-line reentrancy-no-eth
SafeERC20.safeTransferFrom($._asset, caller, address(this), assets);
_mint(receiver, shares);
emit Deposit(caller, receiver, assets, shares);
}
/**
* @dev Withdraw/redeem common workflow.
*/
function _withdraw(
address caller,
address receiver,
address owner,
uint256 assets,
uint256 shares
) internal virtual {
ERC4626Storage storage $ = _getERC4626Storage();
if (caller != owner) {
_spendAllowance(owner, caller, shares);
}
// If _asset is ERC777, `transfer` can trigger a reentrancy AFTER the transfer happens through the
// `tokensReceived` hook. On the other hand, the `tokensToSend` hook, that is triggered before the transfer,
// calls the vault, which is assumed not malicious.
//
// Conclusion: we need to do the transfer after the burn so that any reentrancy would happen after the
// shares are burned and after the assets are transferred, which is a valid state.
_burn(owner, shares);
SafeERC20.safeTransfer($._asset, receiver, assets);
emit Withdraw(caller, receiver, owner, assets, shares);
}
function _decimalsOffset() internal view virtual returns (uint8) {
return 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC-20 standard as defined in the ERC.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the value of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the value of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 value) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the
* allowance mechanism. `value` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 value) external returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1363.sol)
pragma solidity ^0.8.20;
import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";
/**
* @title IERC1363
* @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
*
* Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
* after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
*/
interface IERC1363 is IERC20, IERC165 {
/*
* Note: the ERC-165 identifier for this interface is 0xb0202a11.
* 0xb0202a11 ===
* bytes4(keccak256('transferAndCall(address,uint256)')) ^
* bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
* bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
* bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
* bytes4(keccak256('approveAndCall(address,uint256)')) ^
* bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
*/
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferAndCall(address to, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @param data Additional data with no specified format, sent in call to `to`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param from The address which you want to send tokens from.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferFromAndCall(address from, address to, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param from The address which you want to send tokens from.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @param data Additional data with no specified format, sent in call to `to`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function approveAndCall(address spender, uint256 value) external returns (bool);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
* @param data Additional data with no specified format, sent in call to `spender`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)
pragma solidity ^0.8.20;
import {Errors} from "./Errors.sol";
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev There's no code at `target` (it is not a contract).
*/
error AddressEmptyCode(address target);
/**
* @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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
if (address(this).balance < amount) {
revert Errors.InsufficientBalance(address(this).balance, amount);
}
(bool success, ) = recipient.call{value: amount}("");
if (!success) {
revert Errors.FailedCall();
}
}
/**
* @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 or custom error, it is bubbled
* up by this function (like regular Solidity function calls). However, if
* the call reverted with no returned reason, this function reverts with a
* {Errors.FailedCall} error.
*
* 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.
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0);
}
/**
* @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`.
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
if (address(this).balance < value) {
revert Errors.InsufficientBalance(address(this).balance, value);
}
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
* was not a contract or bubbling up the revert reason (falling back to {Errors.FailedCall}) in case
* of an unsuccessful call.
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata
) internal view returns (bytes memory) {
if (!success) {
_revert(returndata);
} else {
// only check if target is a contract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
if (returndata.length == 0 && target.code.length == 0) {
revert AddressEmptyCode(target);
}
return returndata;
}
}
/**
* @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
* revert reason or with a default {Errors.FailedCall} error.
*/
function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
if (!success) {
_revert(returndata);
} else {
return returndata;
}
}
/**
* @dev Reverts with returndata if present. Otherwise reverts with {Errors.FailedCall}.
*/
function _revert(bytes memory returndata) 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 Errors.FailedCall();
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
/**
* @dev Helper library for emitting standardized panic codes.
*
* ```solidity
* contract Example {
* using Panic for uint256;
*
* // Use any of the declared internal constants
* function foo() { Panic.GENERIC.panic(); }
*
* // Alternatively
* function foo() { Panic.panic(Panic.GENERIC); }
* }
* ```
*
* Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil].
*/
// slither-disable-next-line unused-state
library Panic {
/// @dev generic / unspecified error
uint256 internal constant GENERIC = 0x00;
/// @dev used by the assert() builtin
uint256 internal constant ASSERT = 0x01;
/// @dev arithmetic underflow or overflow
uint256 internal constant UNDER_OVERFLOW = 0x11;
/// @dev division or modulo by zero
uint256 internal constant DIVISION_BY_ZERO = 0x12;
/// @dev enum conversion error
uint256 internal constant ENUM_CONVERSION_ERROR = 0x21;
/// @dev invalid encoding in storage
uint256 internal constant STORAGE_ENCODING_ERROR = 0x22;
/// @dev empty array pop
uint256 internal constant EMPTY_ARRAY_POP = 0x31;
/// @dev array out of bounds access
uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32;
/// @dev resource error (too large allocation or too large array)
uint256 internal constant RESOURCE_ERROR = 0x41;
/// @dev calling invalid internal function
uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51;
/// @dev Reverts with a panic code. Recommended to use with
/// the internal constants with predefined codes.
function panic(uint256 code) internal pure {
/// @solidity memory-safe-assembly
assembly {
mstore(0x00, 0x4e487b71)
mstore(0x20, code)
revert(0x1c, 0x24)
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.
pragma solidity ^0.8.20;
/**
* @dev Wrappers over Solidity's uintXX/intXX/bool casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeCast {
/**
* @dev Value doesn't fit in an uint of `bits` size.
*/
error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value);
/**
* @dev An int value doesn't fit in an uint of `bits` size.
*/
error SafeCastOverflowedIntToUint(int256 value);
/**
* @dev Value doesn't fit in an int of `bits` size.
*/
error SafeCastOverflowedIntDowncast(uint8 bits, int256 value);
/**
* @dev An uint value doesn't fit in an int of `bits` size.
*/
error SafeCastOverflowedUintToInt(uint256 value);
/**
* @dev Returns the downcasted uint248 from uint256, reverting on
* overflow (when the input is greater than largest uint248).
*
* Counterpart to Solidity's `uint248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*/
function toUint248(uint256 value) internal pure returns (uint248) {
if (value > type(uint248).max) {
revert SafeCastOverflowedUintDowncast(248, value);
}
return uint248(value);
}
/**
* @dev Returns the downcasted uint240 from uint256, reverting on
* overflow (when the input is greater than largest uint240).
*
* Counterpart to Solidity's `uint240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*/
function toUint240(uint256 value) internal pure returns (uint240) {
if (value > type(uint240).max) {
revert SafeCastOverflowedUintDowncast(240, value);
}
return uint240(value);
}
/**
* @dev Returns the downcasted uint232 from uint256, reverting on
* overflow (when the input is greater than largest uint232).
*
* Counterpart to Solidity's `uint232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*/
function toUint232(uint256 value) internal pure returns (uint232) {
if (value > type(uint232).max) {
revert SafeCastOverflowedUintDowncast(232, value);
}
return uint232(value);
}
/**
* @dev Returns the downcasted uint224 from uint256, reverting on
* overflow (when the input is greater than largest uint224).
*
* Counterpart to Solidity's `uint224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*/
function toUint224(uint256 value) internal pure returns (uint224) {
if (value > type(uint224).max) {
revert SafeCastOverflowedUintDowncast(224, value);
}
return uint224(value);
}
/**
* @dev Returns the downcasted uint216 from uint256, reverting on
* overflow (when the input is greater than largest uint216).
*
* Counterpart to Solidity's `uint216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*/
function toUint216(uint256 value) internal pure returns (uint216) {
if (value > type(uint216).max) {
revert SafeCastOverflowedUintDowncast(216, value);
}
return uint216(value);
}
/**
* @dev Returns the downcasted uint208 from uint256, reverting on
* overflow (when the input is greater than largest uint208).
*
* Counterpart to Solidity's `uint208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*/
function toUint208(uint256 value) internal pure returns (uint208) {
if (value > type(uint208).max) {
revert SafeCastOverflowedUintDowncast(208, value);
}
return uint208(value);
}
/**
* @dev Returns the downcasted uint200 from uint256, reverting on
* overflow (when the input is greater than largest uint200).
*
* Counterpart to Solidity's `uint200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*/
function toUint200(uint256 value) internal pure returns (uint200) {
if (value > type(uint200).max) {
revert SafeCastOverflowedUintDowncast(200, value);
}
return uint200(value);
}
/**
* @dev Returns the downcasted uint192 from uint256, reverting on
* overflow (when the input is greater than largest uint192).
*
* Counterpart to Solidity's `uint192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*/
function toUint192(uint256 value) internal pure returns (uint192) {
if (value > type(uint192).max) {
revert SafeCastOverflowedUintDowncast(192, value);
}
return uint192(value);
}
/**
* @dev Returns the downcasted uint184 from uint256, reverting on
* overflow (when the input is greater than largest uint184).
*
* Counterpart to Solidity's `uint184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*/
function toUint184(uint256 value) internal pure returns (uint184) {
if (value > type(uint184).max) {
revert SafeCastOverflowedUintDowncast(184, value);
}
return uint184(value);
}
/**
* @dev Returns the downcasted uint176 from uint256, reverting on
* overflow (when the input is greater than largest uint176).
*
* Counterpart to Solidity's `uint176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*/
function toUint176(uint256 value) internal pure returns (uint176) {
if (value > type(uint176).max) {
revert SafeCastOverflowedUintDowncast(176, value);
}
return uint176(value);
}
/**
* @dev Returns the downcasted uint168 from uint256, reverting on
* overflow (when the input is greater than largest uint168).
*
* Counterpart to Solidity's `uint168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*/
function toUint168(uint256 value) internal pure returns (uint168) {
if (value > type(uint168).max) {
revert SafeCastOverflowedUintDowncast(168, value);
}
return uint168(value);
}
/**
* @dev Returns the downcasted uint160 from uint256, reverting on
* overflow (when the input is greater than largest uint160).
*
* Counterpart to Solidity's `uint160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*/
function toUint160(uint256 value) internal pure returns (uint160) {
if (value > type(uint160).max) {
revert SafeCastOverflowedUintDowncast(160, value);
}
return uint160(value);
}
/**
* @dev Returns the downcasted uint152 from uint256, reverting on
* overflow (when the input is greater than largest uint152).
*
* Counterpart to Solidity's `uint152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*/
function toUint152(uint256 value) internal pure returns (uint152) {
if (value > type(uint152).max) {
revert SafeCastOverflowedUintDowncast(152, value);
}
return uint152(value);
}
/**
* @dev Returns the downcasted uint144 from uint256, reverting on
* overflow (when the input is greater than largest uint144).
*
* Counterpart to Solidity's `uint144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*/
function toUint144(uint256 value) internal pure returns (uint144) {
if (value > type(uint144).max) {
revert SafeCastOverflowedUintDowncast(144, value);
}
return uint144(value);
}
/**
* @dev Returns the downcasted uint136 from uint256, reverting on
* overflow (when the input is greater than largest uint136).
*
* Counterpart to Solidity's `uint136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*/
function toUint136(uint256 value) internal pure returns (uint136) {
if (value > type(uint136).max) {
revert SafeCastOverflowedUintDowncast(136, value);
}
return uint136(value);
}
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toUint128(uint256 value) internal pure returns (uint128) {
if (value > type(uint128).max) {
revert SafeCastOverflowedUintDowncast(128, value);
}
return uint128(value);
}
/**
* @dev Returns the downcasted uint120 from uint256, reverting on
* overflow (when the input is greater than largest uint120).
*
* Counterpart to Solidity's `uint120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*/
function toUint120(uint256 value) internal pure returns (uint120) {
if (value > type(uint120).max) {
revert SafeCastOverflowedUintDowncast(120, value);
}
return uint120(value);
}
/**
* @dev Returns the downcasted uint112 from uint256, reverting on
* overflow (when the input is greater than largest uint112).
*
* Counterpart to Solidity's `uint112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*/
function toUint112(uint256 value) internal pure returns (uint112) {
if (value > type(uint112).max) {
revert SafeCastOverflowedUintDowncast(112, value);
}
return uint112(value);
}
/**
* @dev Returns the downcasted uint104 from uint256, reverting on
* overflow (when the input is greater than largest uint104).
*
* Counterpart to Solidity's `uint104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*/
function toUint104(uint256 value) internal pure returns (uint104) {
if (value > type(uint104).max) {
revert SafeCastOverflowedUintDowncast(104, value);
}
return uint104(value);
}
/**
* @dev Returns the downcasted uint96 from uint256, reverting on
* overflow (when the input is greater than largest uint96).
*
* Counterpart to Solidity's `uint96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*/
function toUint96(uint256 value) internal pure returns (uint96) {
if (value > type(uint96).max) {
revert SafeCastOverflowedUintDowncast(96, value);
}
return uint96(value);
}
/**
* @dev Returns the downcasted uint88 from uint256, reverting on
* overflow (when the input is greater than largest uint88).
*
* Counterpart to Solidity's `uint88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*/
function toUint88(uint256 value) internal pure returns (uint88) {
if (value > type(uint88).max) {
revert SafeCastOverflowedUintDowncast(88, value);
}
return uint88(value);
}
/**
* @dev Returns the downcasted uint80 from uint256, reverting on
* overflow (when the input is greater than largest uint80).
*
* Counterpart to Solidity's `uint80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*/
function toUint80(uint256 value) internal pure returns (uint80) {
if (value > type(uint80).max) {
revert SafeCastOverflowedUintDowncast(80, value);
}
return uint80(value);
}
/**
* @dev Returns the downcasted uint72 from uint256, reverting on
* overflow (when the input is greater than largest uint72).
*
* Counterpart to Solidity's `uint72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*/
function toUint72(uint256 value) internal pure returns (uint72) {
if (value > type(uint72).max) {
revert SafeCastOverflowedUintDowncast(72, value);
}
return uint72(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toUint64(uint256 value) internal pure returns (uint64) {
if (value > type(uint64).max) {
revert SafeCastOverflowedUintDowncast(64, value);
}
return uint64(value);
}
/**
* @dev Returns the downcasted uint56 from uint256, reverting on
* overflow (when the input is greater than largest uint56).
*
* Counterpart to Solidity's `uint56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*/
function toUint56(uint256 value) internal pure returns (uint56) {
if (value > type(uint56).max) {
revert SafeCastOverflowedUintDowncast(56, value);
}
return uint56(value);
}
/**
* @dev Returns the downcasted uint48 from uint256, reverting on
* overflow (when the input is greater than largest uint48).
*
* Counterpart to Solidity's `uint48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*/
function toUint48(uint256 value) internal pure returns (uint48) {
if (value > type(uint48).max) {
revert SafeCastOverflowedUintDowncast(48, value);
}
return uint48(value);
}
/**
* @dev Returns the downcasted uint40 from uint256, reverting on
* overflow (when the input is greater than largest uint40).
*
* Counterpart to Solidity's `uint40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*/
function toUint40(uint256 value) internal pure returns (uint40) {
if (value > type(uint40).max) {
revert SafeCastOverflowedUintDowncast(40, value);
}
return uint40(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toUint32(uint256 value) internal pure returns (uint32) {
if (value > type(uint32).max) {
revert SafeCastOverflowedUintDowncast(32, value);
}
return uint32(value);
}
/**
* @dev Returns the downcasted uint24 from uint256, reverting on
* overflow (when the input is greater than largest uint24).
*
* Counterpart to Solidity's `uint24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*/
function toUint24(uint256 value) internal pure returns (uint24) {
if (value > type(uint24).max) {
revert SafeCastOverflowedUintDowncast(24, value);
}
return uint24(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toUint16(uint256 value) internal pure returns (uint16) {
if (value > type(uint16).max) {
revert SafeCastOverflowedUintDowncast(16, value);
}
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*/
function toUint8(uint256 value) internal pure returns (uint8) {
if (value > type(uint8).max) {
revert SafeCastOverflowedUintDowncast(8, value);
}
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*/
function toUint256(int256 value) internal pure returns (uint256) {
if (value < 0) {
revert SafeCastOverflowedIntToUint(value);
}
return uint256(value);
}
/**
* @dev Returns the downcasted int248 from int256, reverting on
* overflow (when the input is less than smallest int248 or
* greater than largest int248).
*
* Counterpart to Solidity's `int248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*/
function toInt248(int256 value) internal pure returns (int248 downcasted) {
downcasted = int248(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(248, value);
}
}
/**
* @dev Returns the downcasted int240 from int256, reverting on
* overflow (when the input is less than smallest int240 or
* greater than largest int240).
*
* Counterpart to Solidity's `int240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*/
function toInt240(int256 value) internal pure returns (int240 downcasted) {
downcasted = int240(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(240, value);
}
}
/**
* @dev Returns the downcasted int232 from int256, reverting on
* overflow (when the input is less than smallest int232 or
* greater than largest int232).
*
* Counterpart to Solidity's `int232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*/
function toInt232(int256 value) internal pure returns (int232 downcasted) {
downcasted = int232(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(232, value);
}
}
/**
* @dev Returns the downcasted int224 from int256, reverting on
* overflow (when the input is less than smallest int224 or
* greater than largest int224).
*
* Counterpart to Solidity's `int224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*/
function toInt224(int256 value) internal pure returns (int224 downcasted) {
downcasted = int224(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(224, value);
}
}
/**
* @dev Returns the downcasted int216 from int256, reverting on
* overflow (when the input is less than smallest int216 or
* greater than largest int216).
*
* Counterpart to Solidity's `int216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*/
function toInt216(int256 value) internal pure returns (int216 downcasted) {
downcasted = int216(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(216, value);
}
}
/**
* @dev Returns the downcasted int208 from int256, reverting on
* overflow (when the input is less than smallest int208 or
* greater than largest int208).
*
* Counterpart to Solidity's `int208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*/
function toInt208(int256 value) internal pure returns (int208 downcasted) {
downcasted = int208(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(208, value);
}
}
/**
* @dev Returns the downcasted int200 from int256, reverting on
* overflow (when the input is less than smallest int200 or
* greater than largest int200).
*
* Counterpart to Solidity's `int200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*/
function toInt200(int256 value) internal pure returns (int200 downcasted) {
downcasted = int200(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(200, value);
}
}
/**
* @dev Returns the downcasted int192 from int256, reverting on
* overflow (when the input is less than smallest int192 or
* greater than largest int192).
*
* Counterpart to Solidity's `int192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*/
function toInt192(int256 value) internal pure returns (int192 downcasted) {
downcasted = int192(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(192, value);
}
}
/**
* @dev Returns the downcasted int184 from int256, reverting on
* overflow (when the input is less than smallest int184 or
* greater than largest int184).
*
* Counterpart to Solidity's `int184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*/
function toInt184(int256 value) internal pure returns (int184 downcasted) {
downcasted = int184(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(184, value);
}
}
/**
* @dev Returns the downcasted int176 from int256, reverting on
* overflow (when the input is less than smallest int176 or
* greater than largest int176).
*
* Counterpart to Solidity's `int176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*/
function toInt176(int256 value) internal pure returns (int176 downcasted) {
downcasted = int176(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(176, value);
}
}
/**
* @dev Returns the downcasted int168 from int256, reverting on
* overflow (when the input is less than smallest int168 or
* greater than largest int168).
*
* Counterpart to Solidity's `int168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*/
function toInt168(int256 value) internal pure returns (int168 downcasted) {
downcasted = int168(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(168, value);
}
}
/**
* @dev Returns the downcasted int160 from int256, reverting on
* overflow (when the input is less than smallest int160 or
* greater than largest int160).
*
* Counterpart to Solidity's `int160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*/
function toInt160(int256 value) internal pure returns (int160 downcasted) {
downcasted = int160(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(160, value);
}
}
/**
* @dev Returns the downcasted int152 from int256, reverting on
* overflow (when the input is less than smallest int152 or
* greater than largest int152).
*
* Counterpart to Solidity's `int152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*/
function toInt152(int256 value) internal pure returns (int152 downcasted) {
downcasted = int152(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(152, value);
}
}
/**
* @dev Returns the downcasted int144 from int256, reverting on
* overflow (when the input is less than smallest int144 or
* greater than largest int144).
*
* Counterpart to Solidity's `int144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*/
function toInt144(int256 value) internal pure returns (int144 downcasted) {
downcasted = int144(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(144, value);
}
}
/**
* @dev Returns the downcasted int136 from int256, reverting on
* overflow (when the input is less than smallest int136 or
* greater than largest int136).
*
* Counterpart to Solidity's `int136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*/
function toInt136(int256 value) internal pure returns (int136 downcasted) {
downcasted = int136(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(136, value);
}
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toInt128(int256 value) internal pure returns (int128 downcasted) {
downcasted = int128(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(128, value);
}
}
/**
* @dev Returns the downcasted int120 from int256, reverting on
* overflow (when the input is less than smallest int120 or
* greater than largest int120).
*
* Counterpart to Solidity's `int120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*/
function toInt120(int256 value) internal pure returns (int120 downcasted) {
downcasted = int120(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(120, value);
}
}
/**
* @dev Returns the downcasted int112 from int256, reverting on
* overflow (when the input is less than smallest int112 or
* greater than largest int112).
*
* Counterpart to Solidity's `int112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*/
function toInt112(int256 value) internal pure returns (int112 downcasted) {
downcasted = int112(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(112, value);
}
}
/**
* @dev Returns the downcasted int104 from int256, reverting on
* overflow (when the input is less than smallest int104 or
* greater than largest int104).
*
* Counterpart to Solidity's `int104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*/
function toInt104(int256 value) internal pure returns (int104 downcasted) {
downcasted = int104(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(104, value);
}
}
/**
* @dev Returns the downcasted int96 from int256, reverting on
* overflow (when the input is less than smallest int96 or
* greater than largest int96).
*
* Counterpart to Solidity's `int96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*/
function toInt96(int256 value) internal pure returns (int96 downcasted) {
downcasted = int96(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(96, value);
}
}
/**
* @dev Returns the downcasted int88 from int256, reverting on
* overflow (when the input is less than smallest int88 or
* greater than largest int88).
*
* Counterpart to Solidity's `int88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*/
function toInt88(int256 value) internal pure returns (int88 downcasted) {
downcasted = int88(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(88, value);
}
}
/**
* @dev Returns the downcasted int80 from int256, reverting on
* overflow (when the input is less than smallest int80 or
* greater than largest int80).
*
* Counterpart to Solidity's `int80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*/
function toInt80(int256 value) internal pure returns (int80 downcasted) {
downcasted = int80(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(80, value);
}
}
/**
* @dev Returns the downcasted int72 from int256, reverting on
* overflow (when the input is less than smallest int72 or
* greater than largest int72).
*
* Counterpart to Solidity's `int72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*/
function toInt72(int256 value) internal pure returns (int72 downcasted) {
downcasted = int72(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(72, value);
}
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toInt64(int256 value) internal pure returns (int64 downcasted) {
downcasted = int64(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(64, value);
}
}
/**
* @dev Returns the downcasted int56 from int256, reverting on
* overflow (when the input is less than smallest int56 or
* greater than largest int56).
*
* Counterpart to Solidity's `int56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*/
function toInt56(int256 value) internal pure returns (int56 downcasted) {
downcasted = int56(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(56, value);
}
}
/**
* @dev Returns the downcasted int48 from int256, reverting on
* overflow (when the input is less than smallest int48 or
* greater than largest int48).
*
* Counterpart to Solidity's `int48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*/
function toInt48(int256 value) internal pure returns (int48 downcasted) {
downcasted = int48(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(48, value);
}
}
/**
* @dev Returns the downcasted int40 from int256, reverting on
* overflow (when the input is less than smallest int40 or
* greater than largest int40).
*
* Counterpart to Solidity's `int40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*/
function toInt40(int256 value) internal pure returns (int40 downcasted) {
downcasted = int40(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(40, value);
}
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toInt32(int256 value) internal pure returns (int32 downcasted) {
downcasted = int32(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(32, value);
}
}
/**
* @dev Returns the downcasted int24 from int256, reverting on
* overflow (when the input is less than smallest int24 or
* greater than largest int24).
*
* Counterpart to Solidity's `int24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*/
function toInt24(int256 value) internal pure returns (int24 downcasted) {
downcasted = int24(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(24, value);
}
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toInt16(int256 value) internal pure returns (int16 downcasted) {
downcasted = int16(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(16, value);
}
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*/
function toInt8(int256 value) internal pure returns (int8 downcasted) {
downcasted = int8(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(8, value);
}
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*/
function toInt256(uint256 value) internal pure returns (int256) {
// Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
if (value > uint256(type(int256).max)) {
revert SafeCastOverflowedUintToInt(value);
}
return int256(value);
}
/**
* @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump.
*/
function toUint(bool b) internal pure returns (uint256 u) {
/// @solidity memory-safe-assembly
assembly {
u := iszero(iszero(b))
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/manager/IAuthority.sol)
pragma solidity ^0.8.20;
/**
* @dev Standard interface for permissioning originally defined in Dappsys.
*/
interface IAuthority {
/**
* @dev Returns true if the caller can invoke on a target the function identified by a function selector.
*/
function canCall(address caller, address target, bytes4 selector) external view returns (bool allowed);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/manager/AuthorityUtils.sol)
pragma solidity ^0.8.20;
import {IAuthority} from "./IAuthority.sol";
library AuthorityUtils {
/**
* @dev Since `AccessManager` implements an extended IAuthority interface, invoking `canCall` with backwards compatibility
* for the preexisting `IAuthority` interface requires special care to avoid reverting on insufficient return data.
* This helper function takes care of invoking `canCall` in a backwards compatible way without reverting.
*/
function canCallWithDelay(
address authority,
address caller,
address target,
bytes4 selector
) internal view returns (bool immediate, uint32 delay) {
(bool success, bytes memory data) = authority.staticcall(
abi.encodeCall(IAuthority.canCall, (caller, target, selector))
);
if (success) {
if (data.length >= 0x40) {
(immediate, delay) = abi.decode(data, (bool, uint32));
} else if (data.length >= 0x20) {
immediate = abi.decode(data, (bool));
}
}
return (immediate, delay);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/manager/IAccessManager.sol)
pragma solidity ^0.8.20;
import {IAccessManaged} from "./IAccessManaged.sol";
import {Time} from "../../utils/types/Time.sol";
interface IAccessManager {
/**
* @dev A delayed operation was scheduled.
*/
event OperationScheduled(
bytes32 indexed operationId,
uint32 indexed nonce,
uint48 schedule,
address caller,
address target,
bytes data
);
/**
* @dev A scheduled operation was executed.
*/
event OperationExecuted(bytes32 indexed operationId, uint32 indexed nonce);
/**
* @dev A scheduled operation was canceled.
*/
event OperationCanceled(bytes32 indexed operationId, uint32 indexed nonce);
/**
* @dev Informational labelling for a roleId.
*/
event RoleLabel(uint64 indexed roleId, string label);
/**
* @dev Emitted when `account` is granted `roleId`.
*
* NOTE: The meaning of the `since` argument depends on the `newMember` argument.
* If the role is granted to a new member, the `since` argument indicates when the account becomes a member of the role,
* otherwise it indicates the execution delay for this account and roleId is updated.
*/
event RoleGranted(uint64 indexed roleId, address indexed account, uint32 delay, uint48 since, bool newMember);
/**
* @dev Emitted when `account` membership or `roleId` is revoked. Unlike granting, revoking is instantaneous.
*/
event RoleRevoked(uint64 indexed roleId, address indexed account);
/**
* @dev Role acting as admin over a given `roleId` is updated.
*/
event RoleAdminChanged(uint64 indexed roleId, uint64 indexed admin);
/**
* @dev Role acting as guardian over a given `roleId` is updated.
*/
event RoleGuardianChanged(uint64 indexed roleId, uint64 indexed guardian);
/**
* @dev Grant delay for a given `roleId` will be updated to `delay` when `since` is reached.
*/
event RoleGrantDelayChanged(uint64 indexed roleId, uint32 delay, uint48 since);
/**
* @dev Target mode is updated (true = closed, false = open).
*/
event TargetClosed(address indexed target, bool closed);
/**
* @dev Role required to invoke `selector` on `target` is updated to `roleId`.
*/
event TargetFunctionRoleUpdated(address indexed target, bytes4 selector, uint64 indexed roleId);
/**
* @dev Admin delay for a given `target` will be updated to `delay` when `since` is reached.
*/
event TargetAdminDelayUpdated(address indexed target, uint32 delay, uint48 since);
error AccessManagerAlreadyScheduled(bytes32 operationId);
error AccessManagerNotScheduled(bytes32 operationId);
error AccessManagerNotReady(bytes32 operationId);
error AccessManagerExpired(bytes32 operationId);
error AccessManagerLockedAccount(address account);
error AccessManagerLockedRole(uint64 roleId);
error AccessManagerBadConfirmation();
error AccessManagerUnauthorizedAccount(address msgsender, uint64 roleId);
error AccessManagerUnauthorizedCall(address caller, address target, bytes4 selector);
error AccessManagerUnauthorizedConsume(address target);
error AccessManagerUnauthorizedCancel(address msgsender, address caller, address target, bytes4 selector);
error AccessManagerInvalidInitialAdmin(address initialAdmin);
/**
* @dev Check if an address (`caller`) is authorised to call a given function on a given contract directly (with
* no restriction). Additionally, it returns the delay needed to perform the call indirectly through the {schedule}
* & {execute} workflow.
*
* This function is usually called by the targeted contract to control immediate execution of restricted functions.
* Therefore we only return true if the call can be performed without any delay. If the call is subject to a
* previously set delay (not zero), then the function should return false and the caller should schedule the operation
* for future execution.
*
* If `immediate` is true, the delay can be disregarded and the operation can be immediately executed, otherwise
* the operation can be executed if and only if delay is greater than 0.
*
* NOTE: The IAuthority interface does not include the `uint32` delay. This is an extension of that interface that
* is backward compatible. Some contracts may thus ignore the second return argument. In that case they will fail
* to identify the indirect workflow, and will consider calls that require a delay to be forbidden.
*
* NOTE: This function does not report the permissions of this manager itself. These are defined by the
* {_canCallSelf} function instead.
*/
function canCall(
address caller,
address target,
bytes4 selector
) external view returns (bool allowed, uint32 delay);
/**
* @dev Expiration delay for scheduled proposals. Defaults to 1 week.
*
* IMPORTANT: Avoid overriding the expiration with 0. Otherwise every contract proposal will be expired immediately,
* disabling any scheduling usage.
*/
function expiration() external view returns (uint32);
/**
* @dev Minimum setback for all delay updates, with the exception of execution delays. It
* can be increased without setback (and reset via {revokeRole} in the case event of an
* accidental increase). Defaults to 5 days.
*/
function minSetback() external view returns (uint32);
/**
* @dev Get whether the contract is closed disabling any access. Otherwise role permissions are applied.
*/
function isTargetClosed(address target) external view returns (bool);
/**
* @dev Get the role required to call a function.
*/
function getTargetFunctionRole(address target, bytes4 selector) external view returns (uint64);
/**
* @dev Get the admin delay for a target contract. Changes to contract configuration are subject to this delay.
*/
function getTargetAdminDelay(address target) external view returns (uint32);
/**
* @dev Get the id of the role that acts as an admin for the given role.
*
* The admin permission is required to grant the role, revoke the role and update the execution delay to execute
* an operation that is restricted to this role.
*/
function getRoleAdmin(uint64 roleId) external view returns (uint64);
/**
* @dev Get the role that acts as a guardian for a given role.
*
* The guardian permission allows canceling operations that have been scheduled under the role.
*/
function getRoleGuardian(uint64 roleId) external view returns (uint64);
/**
* @dev Get the role current grant delay.
*
* Its value may change at any point without an event emitted following a call to {setGrantDelay}.
* Changes to this value, including effect timepoint are notified in advance by the {RoleGrantDelayChanged} event.
*/
function getRoleGrantDelay(uint64 roleId) external view returns (uint32);
/**
* @dev Get the access details for a given account for a given role. These details include the timepoint at which
* membership becomes active, and the delay applied to all operation by this user that requires this permission
* level.
*
* Returns:
* [0] Timestamp at which the account membership becomes valid. 0 means role is not granted.
* [1] Current execution delay for the account.
* [2] Pending execution delay for the account.
* [3] Timestamp at which the pending execution delay will become active. 0 means no delay update is scheduled.
*/
function getAccess(
uint64 roleId,
address account
) external view returns (uint48 since, uint32 currentDelay, uint32 pendingDelay, uint48 effect);
/**
* @dev Check if a given account currently has the permission level corresponding to a given role. Note that this
* permission might be associated with an execution delay. {getAccess} can provide more details.
*/
function hasRole(uint64 roleId, address account) external view returns (bool isMember, uint32 executionDelay);
/**
* @dev Give a label to a role, for improved role discoverability by UIs.
*
* Requirements:
*
* - the caller must be a global admin
*
* Emits a {RoleLabel} event.
*/
function labelRole(uint64 roleId, string calldata label) external;
/**
* @dev Add `account` to `roleId`, or change its execution delay.
*
* This gives the account the authorization to call any function that is restricted to this role. An optional
* execution delay (in seconds) can be set. If that delay is non 0, the user is required to schedule any operation
* that is restricted to members of this role. The user will only be able to execute the operation after the delay has
* passed, before it has expired. During this period, admin and guardians can cancel the operation (see {cancel}).
*
* If the account has already been granted this role, the execution delay will be updated. This update is not
* immediate and follows the delay rules. For example, if a user currently has a delay of 3 hours, and this is
* called to reduce that delay to 1 hour, the new delay will take some time to take effect, enforcing that any
* operation executed in the 3 hours that follows this update was indeed scheduled before this update.
*
* Requirements:
*
* - the caller must be an admin for the role (see {getRoleAdmin})
* - granted role must not be the `PUBLIC_ROLE`
*
* Emits a {RoleGranted} event.
*/
function grantRole(uint64 roleId, address account, uint32 executionDelay) external;
/**
* @dev Remove an account from a role, with immediate effect. If the account does not have the role, this call has
* no effect.
*
* Requirements:
*
* - the caller must be an admin for the role (see {getRoleAdmin})
* - revoked role must not be the `PUBLIC_ROLE`
*
* Emits a {RoleRevoked} event if the account had the role.
*/
function revokeRole(uint64 roleId, address account) external;
/**
* @dev Renounce role permissions for the calling account with immediate effect. If the sender is not in
* the role this call has no effect.
*
* Requirements:
*
* - the caller must be `callerConfirmation`.
*
* Emits a {RoleRevoked} event if the account had the role.
*/
function renounceRole(uint64 roleId, address callerConfirmation) external;
/**
* @dev Change admin role for a given role.
*
* Requirements:
*
* - the caller must be a global admin
*
* Emits a {RoleAdminChanged} event
*/
function setRoleAdmin(uint64 roleId, uint64 admin) external;
/**
* @dev Change guardian role for a given role.
*
* Requirements:
*
* - the caller must be a global admin
*
* Emits a {RoleGuardianChanged} event
*/
function setRoleGuardian(uint64 roleId, uint64 guardian) external;
/**
* @dev Update the delay for granting a `roleId`.
*
* Requirements:
*
* - the caller must be a global admin
*
* Emits a {RoleGrantDelayChanged} event.
*/
function setGrantDelay(uint64 roleId, uint32 newDelay) external;
/**
* @dev Set the role required to call functions identified by the `selectors` in the `target` contract.
*
* Requirements:
*
* - the caller must be a global admin
*
* Emits a {TargetFunctionRoleUpdated} event per selector.
*/
function setTargetFunctionRole(address target, bytes4[] calldata selectors, uint64 roleId) external;
/**
* @dev Set the delay for changing the configuration of a given target contract.
*
* Requirements:
*
* - the caller must be a global admin
*
* Emits a {TargetAdminDelayUpdated} event.
*/
function setTargetAdminDelay(address target, uint32 newDelay) external;
/**
* @dev Set the closed flag for a contract.
*
* Requirements:
*
* - the caller must be a global admin
*
* Emits a {TargetClosed} event.
*/
function setTargetClosed(address target, bool closed) external;
/**
* @dev Return the timepoint at which a scheduled operation will be ready for execution. This returns 0 if the
* operation is not yet scheduled, has expired, was executed, or was canceled.
*/
function getSchedule(bytes32 id) external view returns (uint48);
/**
* @dev Return the nonce for the latest scheduled operation with a given id. Returns 0 if the operation has never
* been scheduled.
*/
function getNonce(bytes32 id) external view returns (uint32);
/**
* @dev Schedule a delayed operation for future execution, and return the operation identifier. It is possible to
* choose the timestamp at which the operation becomes executable as long as it satisfies the execution delays
* required for the caller. The special value zero will automatically set the earliest possible time.
*
* Returns the `operationId` that was scheduled. Since this value is a hash of the parameters, it can reoccur when
* the same parameters are used; if this is relevant, the returned `nonce` can be used to uniquely identify this
* scheduled operation from other occurrences of the same `operationId` in invocations of {execute} and {cancel}.
*
* Emits a {OperationScheduled} event.
*
* NOTE: It is not possible to concurrently schedule more than one operation with the same `target` and `data`. If
* this is necessary, a random byte can be appended to `data` to act as a salt that will be ignored by the target
* contract if it is using standard Solidity ABI encoding.
*/
function schedule(
address target,
bytes calldata data,
uint48 when
) external returns (bytes32 operationId, uint32 nonce);
/**
* @dev Execute a function that is delay restricted, provided it was properly scheduled beforehand, or the
* execution delay is 0.
*
* Returns the nonce that identifies the previously scheduled operation that is executed, or 0 if the
* operation wasn't previously scheduled (if the caller doesn't have an execution delay).
*
* Emits an {OperationExecuted} event only if the call was scheduled and delayed.
*/
function execute(address target, bytes calldata data) external payable returns (uint32);
/**
* @dev Cancel a scheduled (delayed) operation. Returns the nonce that identifies the previously scheduled
* operation that is cancelled.
*
* Requirements:
*
* - the caller must be the proposer, a guardian of the targeted function, or a global admin
*
* Emits a {OperationCanceled} event.
*/
function cancel(address caller, address target, bytes calldata data) external returns (uint32);
/**
* @dev Consume a scheduled operation targeting the caller. If such an operation exists, mark it as consumed
* (emit an {OperationExecuted} event and clean the state). Otherwise, throw an error.
*
* This is useful for contract that want to enforce that calls targeting them were scheduled on the manager,
* with all the verifications that it implies.
*
* Emit a {OperationExecuted} event.
*/
function consumeScheduledOp(address caller, bytes calldata data) external;
/**
* @dev Hashing function for delayed operations.
*/
function hashOperation(address caller, address target, bytes calldata data) external view returns (bytes32);
/**
* @dev Changes the authority of a target managed by this manager instance.
*
* Requirements:
*
* - the caller must be a global admin
*/
function updateAuthority(address target, address newAuthority) external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/manager/IAccessManaged.sol)
pragma solidity ^0.8.20;
interface IAccessManaged {
/**
* @dev Authority that manages this contract was updated.
*/
event AuthorityUpdated(address authority);
error AccessManagedUnauthorized(address caller);
error AccessManagedRequiredDelay(address caller, uint32 delay);
error AccessManagedInvalidAuthority(address authority);
/**
* @dev Returns the current authority.
*/
function authority() external view returns (address);
/**
* @dev Transfers control to a new authority. The caller must be the current authority.
*/
function setAuthority(address) external;
/**
* @dev Returns true only in the context of a delayed restricted call, at the moment that the scheduled operation is
* being consumed. Prevents denial of service for delayed restricted calls in the case that the contract performs
* attacker controlled calls.
*/
function isConsumingScheduledOp() external view returns (bytes4);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.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 ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.20;
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```solidity
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
*
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Storage of the initializable contract.
*
* It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
* when using with upgradeable contracts.
*
* @custom:storage-location erc7201:openzeppelin.storage.Initializable
*/
struct InitializableStorage {
/**
* @dev Indicates that the contract has been initialized.
*/
uint64 _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool _initializing;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;
/**
* @dev The contract is already initialized.
*/
error InvalidInitialization();
/**
* @dev The contract is not initializing.
*/
error NotInitializing();
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint64 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts.
*
* Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
* number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
* production.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
// Cache values to avoid duplicated sloads
bool isTopLevelCall = !$._initializing;
uint64 initialized = $._initialized;
// Allowed calls:
// - initialSetup: the contract is not in the initializing state and no previous version was
// initialized
// - construction: the contract is initialized at version 1 (no reininitialization) and the
// current contract is just being deployed
bool initialSetup = initialized == 0 && isTopLevelCall;
bool construction = initialized == 1 && address(this).code.length == 0;
if (!initialSetup && !construction) {
revert InvalidInitialization();
}
$._initialized = 1;
if (isTopLevelCall) {
$._initializing = true;
}
_;
if (isTopLevelCall) {
$._initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* A reinitializer may be used after the original initialization step. This is essential to configure modules that
* are added through upgrades and that require initialization.
*
* When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
* cannot be nested. If one is invoked in the context of another, execution will revert.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*
* WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint64 version) {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
if ($._initializing || $._initialized >= version) {
revert InvalidInitialization();
}
$._initialized = version;
$._initializing = true;
_;
$._initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
_checkInitializing();
_;
}
/**
* @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
*/
function _checkInitializing() internal view virtual {
if (!_isInitializing()) {
revert NotInitializing();
}
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*
* Emits an {Initialized} event the first time it is successfully executed.
*/
function _disableInitializers() internal virtual {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
if ($._initializing) {
revert InvalidInitialization();
}
if ($._initialized != type(uint64).max) {
$._initialized = type(uint64).max;
emit Initialized(type(uint64).max);
}
}
/**
* @dev Returns the highest version that has been initialized. See {reinitializer}.
*/
function _getInitializedVersion() internal view returns (uint64) {
return _getInitializableStorage()._initialized;
}
/**
* @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
*/
function _isInitializing() internal view returns (bool) {
return _getInitializableStorage()._initializing;
}
/**
* @dev Returns a pointer to the storage namespace.
*/
// solhint-disable-next-line var-name-mixedcase
function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
assembly {
$.slot := INITIALIZABLE_STORAGE
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.20;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {ContextUpgradeable} from "../../utils/ContextUpgradeable.sol";
import {IERC20Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
*
* TIP: For a detailed writeup see our guide
* https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*/
abstract contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20, IERC20Metadata, IERC20Errors {
/// @custom:storage-location erc7201:openzeppelin.storage.ERC20
struct ERC20Storage {
mapping(address account => uint256) _balances;
mapping(address account => mapping(address spender => uint256)) _allowances;
uint256 _totalSupply;
string _name;
string _symbol;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ERC20")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant ERC20StorageLocation = 0x52c63247e1f47db19d5ce0460030c497f067ca4cebf71ba98eeadabe20bace00;
function _getERC20Storage() private pure returns (ERC20Storage storage $) {
assembly {
$.slot := ERC20StorageLocation
}
}
/**
* @dev Sets the values for {name} and {symbol}.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {
__ERC20_init_unchained(name_, symbol_);
}
function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
ERC20Storage storage $ = _getERC20Storage();
$._name = name_;
$._symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual returns (string memory) {
ERC20Storage storage $ = _getERC20Storage();
return $._name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual returns (string memory) {
ERC20Storage storage $ = _getERC20Storage();
return $._symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the default value returned by this function, unless
* it's overridden.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual returns (uint256) {
ERC20Storage storage $ = _getERC20Storage();
return $._totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual returns (uint256) {
ERC20Storage storage $ = _getERC20Storage();
return $._balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `value`.
*/
function transfer(address to, uint256 value) public virtual returns (bool) {
address owner = _msgSender();
_transfer(owner, to, value);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual returns (uint256) {
ERC20Storage storage $ = _getERC20Storage();
return $._allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 value) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, value);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `value`.
* - the caller must have allowance for ``from``'s tokens of at least
* `value`.
*/
function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, value);
_transfer(from, to, value);
return true;
}
/**
* @dev Moves a `value` amount of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* NOTE: This function is not virtual, {_update} should be overridden instead.
*/
function _transfer(address from, address to, uint256 value) internal {
if (from == address(0)) {
revert ERC20InvalidSender(address(0));
}
if (to == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(from, to, value);
}
/**
* @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
* (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
* this function.
*
* Emits a {Transfer} event.
*/
function _update(address from, address to, uint256 value) internal virtual {
ERC20Storage storage $ = _getERC20Storage();
if (from == address(0)) {
// Overflow check required: The rest of the code assumes that totalSupply never overflows
$._totalSupply += value;
} else {
uint256 fromBalance = $._balances[from];
if (fromBalance < value) {
revert ERC20InsufficientBalance(from, fromBalance, value);
}
unchecked {
// Overflow not possible: value <= fromBalance <= totalSupply.
$._balances[from] = fromBalance - value;
}
}
if (to == address(0)) {
unchecked {
// Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
$._totalSupply -= value;
}
} else {
unchecked {
// Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
$._balances[to] += value;
}
}
emit Transfer(from, to, value);
}
/**
* @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
* Relies on the `_update` mechanism
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* NOTE: This function is not virtual, {_update} should be overridden instead.
*/
function _mint(address account, uint256 value) internal {
if (account == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(address(0), account, value);
}
/**
* @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
* Relies on the `_update` mechanism.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* NOTE: This function is not virtual, {_update} should be overridden instead
*/
function _burn(address account, uint256 value) internal {
if (account == address(0)) {
revert ERC20InvalidSender(address(0));
}
_update(account, address(0), value);
}
/**
* @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*
* Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
*/
function _approve(address owner, address spender, uint256 value) internal {
_approve(owner, spender, value, true);
}
/**
* @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
*
* By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
* `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
* `Approval` event during `transferFrom` operations.
*
* Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
* true using the following override:
* ```
* function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
* super._approve(owner, spender, value, true);
* }
* ```
*
* Requirements are the same as {_approve}.
*/
function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
ERC20Storage storage $ = _getERC20Storage();
if (owner == address(0)) {
revert ERC20InvalidApprover(address(0));
}
if (spender == address(0)) {
revert ERC20InvalidSpender(address(0));
}
$._allowances[owner][spender] = value;
if (emitEvent) {
emit Approval(owner, spender, value);
}
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `value`.
*
* Does not update the allowance value in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Does not emit an {Approval} event.
*/
function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
if (currentAllowance < value) {
revert ERC20InsufficientAllowance(spender, currentAllowance, value);
}
unchecked {
_approve(owner, spender, currentAllowance - value, false);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)
pragma solidity ^0.8.20;
import {IERC20} from "../token/ERC20/IERC20.sol";// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)
pragma solidity ^0.8.20;
import {IERC165} from "../utils/introspection/IERC165.sol";// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
/**
* @dev Collection of common custom errors used in multiple contracts
*
* IMPORTANT: Backwards compatibility is not guaranteed in future versions of the library.
* It is recommended to avoid relying on the error API for critical functionality.
*/
library Errors {
/**
* @dev The ETH balance of the account is not enough to perform the operation.
*/
error InsufficientBalance(uint256 balance, uint256 needed);
/**
* @dev A call to an address target failed. The target may have reverted.
*/
error FailedCall();
/**
* @dev The deployment failed.
*/
error FailedDeployment();
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/types/Time.sol)
pragma solidity ^0.8.20;
import {Math} from "../math/Math.sol";
import {SafeCast} from "../math/SafeCast.sol";
/**
* @dev This library provides helpers for manipulating time-related objects.
*
* It uses the following types:
* - `uint48` for timepoints
* - `uint32` for durations
*
* While the library doesn't provide specific types for timepoints and duration, it does provide:
* - a `Delay` type to represent duration that can be programmed to change value automatically at a given point
* - additional helper functions
*/
library Time {
using Time for *;
/**
* @dev Get the block timestamp as a Timepoint.
*/
function timestamp() internal view returns (uint48) {
return SafeCast.toUint48(block.timestamp);
}
/**
* @dev Get the block number as a Timepoint.
*/
function blockNumber() internal view returns (uint48) {
return SafeCast.toUint48(block.number);
}
// ==================================================== Delay =====================================================
/**
* @dev A `Delay` is a uint32 duration that can be programmed to change value automatically at a given point in the
* future. The "effect" timepoint describes when the transitions happens from the "old" value to the "new" value.
* This allows updating the delay applied to some operation while keeping some guarantees.
*
* In particular, the {update} function guarantees that if the delay is reduced, the old delay still applies for
* some time. For example if the delay is currently 7 days to do an upgrade, the admin should not be able to set
* the delay to 0 and upgrade immediately. If the admin wants to reduce the delay, the old delay (7 days) should
* still apply for some time.
*
*
* The `Delay` type is 112 bits long, and packs the following:
*
* ```
* | [uint48]: effect date (timepoint)
* | | [uint32]: value before (duration)
* ↓ ↓ ↓ [uint32]: value after (duration)
* 0xAAAAAAAAAAAABBBBBBBBCCCCCCCC
* ```
*
* NOTE: The {get} and {withUpdate} functions operate using timestamps. Block number based delays are not currently
* supported.
*/
type Delay is uint112;
/**
* @dev Wrap a duration into a Delay to add the one-step "update in the future" feature
*/
function toDelay(uint32 duration) internal pure returns (Delay) {
return Delay.wrap(duration);
}
/**
* @dev Get the value at a given timepoint plus the pending value and effect timepoint if there is a scheduled
* change after this timepoint. If the effect timepoint is 0, then the pending value should not be considered.
*/
function _getFullAt(Delay self, uint48 timepoint) private pure returns (uint32, uint32, uint48) {
(uint32 valueBefore, uint32 valueAfter, uint48 effect) = self.unpack();
return effect <= timepoint ? (valueAfter, 0, 0) : (valueBefore, valueAfter, effect);
}
/**
* @dev Get the current value plus the pending value and effect timepoint if there is a scheduled change. If the
* effect timepoint is 0, then the pending value should not be considered.
*/
function getFull(Delay self) internal view returns (uint32, uint32, uint48) {
return _getFullAt(self, timestamp());
}
/**
* @dev Get the current value.
*/
function get(Delay self) internal view returns (uint32) {
(uint32 delay, , ) = self.getFull();
return delay;
}
/**
* @dev Update a Delay object so that it takes a new duration after a timepoint that is automatically computed to
* enforce the old delay at the moment of the update. Returns the updated Delay object and the timestamp when the
* new delay becomes effective.
*/
function withUpdate(
Delay self,
uint32 newValue,
uint32 minSetback
) internal view returns (Delay updatedDelay, uint48 effect) {
uint32 value = self.get();
uint32 setback = uint32(Math.max(minSetback, value > newValue ? value - newValue : 0));
effect = timestamp() + setback;
return (pack(value, newValue, effect), effect);
}
/**
* @dev Split a delay into its components: valueBefore, valueAfter and effect (transition timepoint).
*/
function unpack(Delay self) internal pure returns (uint32 valueBefore, uint32 valueAfter, uint48 effect) {
uint112 raw = Delay.unwrap(self);
valueAfter = uint32(raw);
valueBefore = uint32(raw >> 32);
effect = uint48(raw >> 64);
return (valueBefore, valueAfter, effect);
}
/**
* @dev pack the components into a Delay object.
*/
function pack(uint32 valueBefore, uint32 valueAfter, uint48 effect) internal pure returns (Delay) {
return Delay.wrap((uint112(effect) << 64) | (uint112(valueBefore) << 32) | uint112(valueAfter));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;
/**
* @dev Standard ERC-20 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
*/
interface IERC20Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC20InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC20InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
* @param spender Address that may be allowed to operate on tokens without being their owner.
* @param allowance Amount of tokens a `spender` is allowed to operate with.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC20InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `spender` to be approved. Used in approvals.
* @param spender Address that may be allowed to operate on tokens without being their owner.
*/
error ERC20InvalidSpender(address spender);
}
/**
* @dev Standard ERC-721 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
*/
interface IERC721Errors {
/**
* @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
* Used in balance queries.
* @param owner Address of the current owner of a token.
*/
error ERC721InvalidOwner(address owner);
/**
* @dev Indicates a `tokenId` whose `owner` is the zero address.
* @param tokenId Identifier number of a token.
*/
error ERC721NonexistentToken(uint256 tokenId);
/**
* @dev Indicates an error related to the ownership over a particular token. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param tokenId Identifier number of a token.
* @param owner Address of the current owner of a token.
*/
error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC721InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC721InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param tokenId Identifier number of a token.
*/
error ERC721InsufficientApproval(address operator, uint256 tokenId);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC721InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC721InvalidOperator(address operator);
}
/**
* @dev Standard ERC-1155 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
*/
interface IERC1155Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
* @param tokenId Identifier number of a token.
*/
error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC1155InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC1155InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param owner Address of the current owner of a token.
*/
error ERC1155MissingApprovalForAll(address operator, address owner);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC1155InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC1155InvalidOperator(address operator);
/**
* @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
* Used in batch transfers.
* @param idsLength Length of the array of token identifiers
* @param valuesLength Length of the array of token amounts
*/
error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC-165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[ERC].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}{
"remappings": [
"@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
"@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
"forge-std/=lib/forge-std/src/",
"config/=lib/spectra-contracts-configs/script/",
"ds-test/=lib/openzeppelin-contracts-upgradeable/lib/forge-std/lib/ds-test/src/",
"erc4626-tests/=lib/erc4626-tests/",
"openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
"openzeppelin-contracts/=lib/openzeppelin-contracts/",
"spectra-contracts-configs/=lib/spectra-contracts-configs/"
],
"optimizer": {
"enabled": false,
"runs": 200
},
"metadata": {
"useLiteralContent": false,
"bytecodeHash": "ipfs",
"appendCBOR": true
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "shanghai",
"viaIR": false
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
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Creation Code
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0x64646C8bA5D8c190E1EDc1697cCe389483e3fc42
Net Worth in USD
$0.00
Net Worth in HYPE
0
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.