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// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.28;
import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";
import {ISilo, IERC4626, IERC3156FlashLender} from "./interfaces/ISilo.sol";
import {IShareToken} from "./interfaces/IShareToken.sol";
import {IERC3156FlashBorrower} from "./interfaces/IERC3156FlashBorrower.sol";
import {ISiloConfig} from "./interfaces/ISiloConfig.sol";
import {ISiloFactory} from "./interfaces/ISiloFactory.sol";
import {ShareCollateralToken} from "./utils/ShareCollateralToken.sol";
import {Actions} from "./lib/Actions.sol";
import {Views} from "./lib/Views.sol";
import {SiloStdLib} from "./lib/SiloStdLib.sol";
import {SiloLendingLib} from "./lib/SiloLendingLib.sol";
import {SiloERC4626Lib} from "./lib/SiloERC4626Lib.sol";
import {SiloMathLib} from "./lib/SiloMathLib.sol";
import {Rounding} from "./lib/Rounding.sol";
import {Hook} from "./lib/Hook.sol";
import {ShareTokenLib} from "./lib/ShareTokenLib.sol";
import {SiloStorageLib} from "./lib/SiloStorageLib.sol";
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// 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);
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// 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.
     */
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
import {IERC4626, IERC20, IERC20Metadata} from "openzeppelin5/interfaces/IERC4626.sol";
import {IERC3156FlashLender} from "./IERC3156FlashLender.sol";
import {ISiloConfig} from "./ISiloConfig.sol";
import {ISiloFactory} from "./ISiloFactory.sol";
import {IHookReceiver} from "./IHookReceiver.sol";
// solhint-disable ordering
interface ISilo is IERC20, IERC4626, IERC3156FlashLender {
    /// @dev Interest accrual happens on each deposit/withdraw/borrow/repay. View methods work on storage that might be
    ///      outdate. Some calculations require accrued interest to return current state of Silo. This struct is used
    ///      to make a decision inside functions if interest should be accrued in memory to work on updated values.
    enum AccrueInterestInMemory {
        No,
        Yes
    }
    /// @dev Silo has two separate oracles for solvency and maxLtv calculations. MaxLtv oracle is optional. Solvency
    ///      oracle can also be optional if asset is used as denominator in Silo config. For example, in ETH/USDC Silo
    ///      one could setup only solvency oracle for ETH that returns price in USDC. Then USDC does not need an oracle
    ///      because it's used as denominator for ETH and it's "price" can be assume as 1.
    enum OracleType {
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
import {IERC20Metadata} from "openzeppelin5/token/ERC20/extensions/IERC20Metadata.sol";
import {ISiloConfig} from "./ISiloConfig.sol";
import {ISilo} from "./ISilo.sol";
interface IShareToken is IERC20Metadata {
    struct HookSetup {
        /// @param this is the same as in siloConfig
        address hookReceiver;
        /// @param hooks bitmap
        uint24 hooksBefore;
        /// @param hooks bitmap
        uint24 hooksAfter;
        /// @param tokenType must be one of this hooks values: COLLATERAL_TOKEN, PROTECTED_TOKEN, DEBT_TOKEN
        uint24 tokenType;
    }
    struct ShareTokenStorage {
        /// @notice Silo address for which tokens was deployed
        ISilo silo;
        /// @dev cached silo config address
        ISiloConfig siloConfig;
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
interface IERC3156FlashBorrower {
    /// @notice During the execution of the flashloan, Silo methods are not taking into consideration the fact,
    /// that some (or all) tokens were transferred as flashloan, therefore some methods can return invalid state
    /// eg. maxWithdraw can return amount that are not available to withdraw during flashlon.
    /// @dev Receive a flash loan.
    /// @param _initiator The initiator of the loan.
    /// @param _token The loan currency.
    /// @param _amount The amount of tokens lent.
    /// @param _fee The additional amount of tokens to repay.
    /// @param _data Arbitrary data structure, intended to contain user-defined parameters.
    /// @return The keccak256 hash of "ERC3156FlashBorrower.onFlashLoan"
    function onFlashLoan(address _initiator, address _token, uint256 _amount, uint256 _fee, bytes calldata _data)
        external
        returns (bytes32);
}
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
import {ISilo} from "./ISilo.sol";
import {ICrossReentrancyGuard} from "./ICrossReentrancyGuard.sol";
interface ISiloConfig is ICrossReentrancyGuard {
    struct InitData {
        /// @notice Can be address zero if deployer fees are not to be collected. If deployer address is zero then
        /// deployer fee must be zero as well. Deployer will be minted an NFT that gives the right to claim deployer
        /// fees. NFT can be transferred with the right to claim.
        address deployer;
        /// @notice Address of the hook receiver called on every before/after action on Silo. Hook contract also
        /// implements liquidation logic and veSilo gauge connection.
        address hookReceiver;
        /// @notice Deployer's fee in 18 decimals points. Deployer will earn this fee based on the interest earned
        /// by the Silo. Max deployer fee is set by the DAO. At deployment it is 15%.
        uint256 deployerFee;
        /// @notice DAO's fee in 18 decimals points. DAO will earn this fee based on the interest earned
        /// by the Silo. Acceptable fee range fee is set by the DAO. Default at deployment is 5% - 50%.
        uint256 daoFee;
        /// @notice Address of the first token
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
import {IERC721} from "openzeppelin5/interfaces/IERC721.sol";
import {ISiloConfig} from "./ISiloConfig.sol";
interface ISiloFactory is IERC721 {
    struct Range {
        uint128 min;
        uint128 max;
    }
    /// @notice Emitted on the creation of a Silo.
    /// @param implementation Address of the Silo implementation.
    /// @param token0 Address of the first Silo token.
    /// @param token1 Address of the second Silo token.
    /// @param silo0 Address of the first Silo.
    /// @param silo1 Address of the second Silo.
    /// @param siloConfig Address of the SiloConfig.
    event NewSilo(
        address indexed implementation,
        address indexed token0,
        address indexed token1,
        address silo0,
        address silo1,
        address siloConfig
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.28;
import {ShareTokenLib} from "../lib/ShareTokenLib.sol";
import {SiloMathLib} from "../lib/SiloMathLib.sol";
import {ShareCollateralTokenLib} from "../lib/ShareCollateralTokenLib.sol";
import {IShareToken, ShareToken, ISilo} from "./ShareToken.sol";
/// @title ShareCollateralToken
/// @notice ERC20 compatible token representing collateral in Silo
/// @custom:security-contact security@silo.finance
abstract contract ShareCollateralToken is ShareToken {
    /// @inheritdoc IShareToken
    function mint(address _owner, address /* _spender */, uint256 _amount) external virtual override onlySilo {
        _mint(_owner, _amount);
    }
    /// @inheritdoc IShareToken
    function burn(address _owner, address _spender, uint256 _amount) external virtual override onlySilo {
        if (_owner != _spender) _spendAllowance(_owner, _spender, _amount);
        _burn(_owner, _amount);
    }
    /// @dev decimals of share token
    function decimals() public view virtual override(ShareToken) returns (uint8) {
        return ShareTokenLib.decimals() + uint8(SiloMathLib._DECIMALS_OFFSET);
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";
import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {IInterestRateModelV2} from "../interfaces/IInterestRateModelV2.sol";
import {ISilo} from "../interfaces/ISilo.sol";
import {IShareToken} from "../interfaces/IShareToken.sol";
import {IERC3156FlashBorrower} from "../interfaces/IERC3156FlashBorrower.sol";
import {IHookReceiver} from "../interfaces/IHookReceiver.sol";
import {SiloERC4626Lib} from "./SiloERC4626Lib.sol";
import {SiloSolvencyLib} from "./SiloSolvencyLib.sol";
import {SiloLendingLib} from "./SiloLendingLib.sol";
import {SiloStdLib} from "./SiloStdLib.sol";
import {Hook} from "./Hook.sol";
import {CallBeforeQuoteLib} from "./CallBeforeQuoteLib.sol";
import {NonReentrantLib} from "./NonReentrantLib.sol";
import {ShareTokenLib} from "./ShareTokenLib.sol";
import {SiloStorageLib} from "./SiloStorageLib.sol";
import {Views} from "./Views.sol";
library Actions {
    using SafeERC20 for IERC20;
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {ISilo} from "../interfaces/ISilo.sol";
import {ISiloOracle} from "../interfaces/ISiloOracle.sol";
import {IShareToken} from "../interfaces/IShareToken.sol";
import {ISiloFactory} from "../interfaces/ISiloFactory.sol";
import {SiloERC4626Lib} from "./SiloERC4626Lib.sol";
import {SiloSolvencyLib} from "./SiloSolvencyLib.sol";
import {SiloLendingLib} from "./SiloLendingLib.sol";
import {SiloStdLib} from "./SiloStdLib.sol";
import {SiloMathLib} from "./SiloMathLib.sol";
import {Rounding} from "./Rounding.sol";
import {ShareTokenLib} from "./ShareTokenLib.sol";
import {SiloStorageLib} from "./SiloStorageLib.sol";
// solhint-disable ordering
library Views {
    uint256 internal constant _100_PERCENT = 1e18;
    bytes32 internal constant _FLASHLOAN_CALLBACK = keccak256("ERC3156FlashBorrower.onFlashLoan");
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {ISilo} from "../interfaces/ISilo.sol";
import {IInterestRateModel} from "../interfaces/IInterestRateModel.sol";
import {IShareToken} from "../interfaces/IShareToken.sol";
import {SiloMathLib} from "./SiloMathLib.sol";
library SiloStdLib {
    using SafeERC20 for IERC20;
    uint256 internal constant _PRECISION_DECIMALS = 1e18;
    /// @notice Returns flash fee amount
    /// @param _config address of config contract for Silo
    /// @param _token for which fee is calculated
    /// @param _amount for which fee is calculated
    /// @return fee flash fee amount
    function flashFee(ISiloConfig _config, address _token, uint256 _amount) internal view returns (uint256 fee) {
        if (_amount == 0) return 0;
        // all user set fees are in 18 decimals points
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";
import {Math} from "openzeppelin5/utils/math/Math.sol";
import {ISiloOracle} from "../interfaces/ISiloOracle.sol";
import {ISilo} from "../interfaces/ISilo.sol";
import {IShareToken} from "../interfaces/IShareToken.sol";
import {IInterestRateModel} from "../interfaces/IInterestRateModel.sol";
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {SiloSolvencyLib} from "./SiloSolvencyLib.sol";
import {SiloStdLib} from "./SiloStdLib.sol";
import {SiloMathLib} from "./SiloMathLib.sol";
import {Rounding} from "./Rounding.sol";
import {ShareTokenLib} from "./ShareTokenLib.sol";
import {SiloStorageLib} from "./SiloStorageLib.sol";
library SiloLendingLib {
    using SafeERC20 for IERC20;
    using Math for uint256;
    uint256 internal constant _PRECISION_DECIMALS = 1e18;
    /// @notice Allows repaying borrowed assets either partially or in full
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {SafeERC20} from "openzeppelin5/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "openzeppelin5/token/ERC20/IERC20.sol";
import {Math} from "openzeppelin5/utils/math/Math.sol";
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {ISilo} from "../interfaces/ISilo.sol";
import {IShareToken} from "../interfaces/IShareToken.sol";
import {SiloSolvencyLib} from "./SiloSolvencyLib.sol";
import {SiloMathLib} from "./SiloMathLib.sol";
import {SiloStdLib} from "./SiloStdLib.sol";
import {SiloLendingLib} from "./SiloLendingLib.sol";
import {Rounding} from "./Rounding.sol";
import {Hook} from "./Hook.sol";
import {ShareTokenLib} from "./ShareTokenLib.sol";
import {SiloStorageLib} from "./SiloStorageLib.sol";
// solhint-disable function-max-lines
library SiloERC4626Lib {
    using SafeERC20 for IERC20;
    using Math for uint256;
    uint256 internal constant _PRECISION_DECIMALS = 1e18;
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {Math} from "openzeppelin5/utils/math/Math.sol";
import {Rounding} from "../lib/Rounding.sol";
import {ISilo} from "../interfaces/ISilo.sol";
library SiloMathLib {
    using Math for uint256;
    uint256 internal constant _PRECISION_DECIMALS = 1e18;
    uint256 internal constant _DECIMALS_OFFSET = 3;
    /// @dev this is constant version of openzeppelin5/contracts/token/ERC20/extensions/ERC4626._decimalsOffset
    uint256 internal constant _DECIMALS_OFFSET_POW = 10 ** _DECIMALS_OFFSET;
    /// @notice Returns available liquidity to be borrowed
    /// @dev Accrued interest is entirely added to `debtAssets` but only part of it is added to `collateralAssets`. The
    ///      difference is DAO's and deployer's cut. That means DAO's and deployer's cut is not considered a borrowable
    ///      liquidity.
    function liquidity(uint256 _collateralAssets, uint256 _debtAssets) internal pure returns (uint256 liquidAssets) {
        unchecked {
            // we checked the underflow
            liquidAssets = _debtAssets > _collateralAssets ? 0 : _collateralAssets - _debtAssets;
        }
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// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.28;
import {Math} from "openzeppelin5/utils/math/Math.sol";
// solhint-disable private-vars-leading-underscore
library Rounding {
    Math.Rounding internal constant UP = (Math.Rounding.Ceil);
    Math.Rounding internal constant DOWN = (Math.Rounding.Floor);
    Math.Rounding internal constant DEBT_TO_ASSETS = (Math.Rounding.Ceil);
    // COLLATERAL_TO_ASSETS is used to calculate borrower collateral (so we want to round down)
    Math.Rounding internal constant COLLATERAL_TO_ASSETS = (Math.Rounding.Floor);
    // why DEPOSIT_TO_ASSETS is Up if COLLATERAL_TO_ASSETS is Down?
    // DEPOSIT_TO_ASSETS is used for preview deposit and deposit, based on provided shares we want to pull "more" tokens
    // so we rounding up, "token flow" is in different direction than for COLLATERAL_TO_ASSETS, that's why
    // different rounding policy
    Math.Rounding internal constant DEPOSIT_TO_ASSETS = (Math.Rounding.Ceil);
    Math.Rounding internal constant DEPOSIT_TO_SHARES = (Math.Rounding.Floor);
    Math.Rounding internal constant BORROW_TO_ASSETS = (Math.Rounding.Floor);
    Math.Rounding internal constant BORROW_TO_SHARES = (Math.Rounding.Ceil);
    Math.Rounding internal constant MAX_BORROW_TO_ASSETS = (Math.Rounding.Floor);
    Math.Rounding internal constant MAX_BORROW_TO_SHARES = (Math.Rounding.Floor);
    Math.Rounding internal constant MAX_BORROW_VALUE = (Math.Rounding.Floor);
    Math.Rounding internal constant REPAY_TO_ASSETS = (Math.Rounding.Ceil);
    Math.Rounding internal constant REPAY_TO_SHARES = (Math.Rounding.Floor);
    Math.Rounding internal constant MAX_REPAY_TO_ASSETS = (Math.Rounding.Ceil);
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// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.28;
import {ISilo} from "../interfaces/ISilo.sol";
// solhint-disable private-vars-leading-underscore
library Hook {
    /// @notice The data structure for the deposit hook
    /// @param assets The amount of assets deposited
    /// @param shares The amount of shares deposited
    /// @param receiver The receiver of the deposit
    struct BeforeDepositInput {
        uint256 assets;
        uint256 shares;
        address receiver;
    }
    /// @notice The data structure for the deposit hook
    /// @param assets The amount of assets deposited
    /// @param shares The amount of shares deposited
    /// @param receiver The receiver of the deposit
    /// @param receivedAssets The exact amount of assets being deposited
    /// @param mintedShares The exact amount of shares being minted
    struct AfterDepositInput {
        uint256 assets;
        uint256 shares;
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
import {Strings} from "openzeppelin5/utils/Strings.sol";
import {ISilo} from "../interfaces/ISilo.sol";
import {IShareToken} from "../interfaces/IShareToken.sol";
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {TokenHelper} from "../lib/TokenHelper.sol";
import {CallBeforeQuoteLib} from "../lib/CallBeforeQuoteLib.sol";
import {Hook} from "../lib/Hook.sol";
// solhint-disable ordering
library ShareTokenLib {
    using Hook for uint24;
    using CallBeforeQuoteLib for ISiloConfig.ConfigData;
    // keccak256(abi.encode(uint256(keccak256("silo.storage.ShareToken")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant _STORAGE_LOCATION = 0x01b0b3f9d6e360167e522fa2b18ba597ad7b2b35841fec7e1ca4dbb0adea1200;
    function getShareTokenStorage() internal pure returns (IShareToken.ShareTokenStorage storage $) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            $.slot := _STORAGE_LOCATION
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.28;
import {ISilo} from "silo-core/contracts/interfaces/ISilo.sol";
library SiloStorageLib {
    // keccak256(abi.encode(uint256(keccak256("silo.storage.SiloVault")) - 1)) & ~bytes32(uint256(0xff));
    bytes32 private constant _STORAGE_LOCATION = 0xd7513ffe3a01a9f6606089d1b67011bca35bec018ac0faa914e1c529408f8300;
    function getSiloStorage() internal pure returns (ISilo.SiloStorage storage $) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            $.slot := _STORAGE_LOCATION
        }
    }
}
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// 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)'))
     */
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// 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].
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// 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.
     *
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
import {IERC3156FlashBorrower} from "./IERC3156FlashBorrower.sol";
/// @notice https://eips.ethereum.org/EIPS/eip-3156
interface IERC3156FlashLender {
    /// @notice Protected deposits are not available for a flash loan.
    /// During the execution of the flashloan, Silo methods are not taking into consideration the fact,
    /// that some (or all) tokens were transferred as flashloan, therefore some methods can return invalid state
    /// eg. maxWithdraw can return amount that are not available to withdraw during flashlon.
    /// @dev Initiate a flash loan.
    /// @param _receiver The receiver of the tokens in the loan, and the receiver of the callback.
    /// @param _token The loan currency.
    /// @param _amount The amount of tokens lent.
    /// @param _data Arbitrary data structure, intended to contain user-defined parameters.
    function flashLoan(IERC3156FlashBorrower _receiver, address _token, uint256 _amount, bytes calldata _data)
        external
        returns (bool);
    /// @dev The amount of currency available to be lent.
    /// @param _token The loan currency.
    /// @return The amount of `token` that can be borrowed.
    function maxFlashLoan(address _token) external view returns (uint256);
    /// @dev The fee to be charged for a given loan.
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
import {ISiloConfig} from "./ISiloConfig.sol";
interface IHookReceiver {
    struct HookConfig {
        uint24 hooksBefore;
        uint24 hooksAfter;
    }
    event HookConfigured(address silo, uint24 hooksBefore, uint24 hooksAfter);
    /// @notice Initialize a hook receiver
    /// @param _siloConfig Silo configuration with all the details about the silo
    /// @param _data Data to initialize the hook receiver (if needed)
    function initialize(ISiloConfig _siloConfig, bytes calldata _data) external;
    /// @notice state of Silo before action, can be also without interest, if you need them, call silo.accrueInterest()
    function beforeAction(address _silo, uint256 _action, bytes calldata _input) external;
    function afterAction(address _silo, uint256 _action, bytes calldata _inputAndOutput) external;
    /// @notice return hooksBefore and hooksAfter configuration
    function hookReceiverConfig(address _silo) external view returns (uint24 hooksBefore, uint24 hooksAfter);
}
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// 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);
}
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
interface ICrossReentrancyGuard {
    error CrossReentrantCall();
    error CrossReentrancyNotActive();
    /// @notice only silo method for cross Silo reentrancy
    function turnOnReentrancyProtection() external;
    /// @notice only silo method for cross Silo reentrancy
    function turnOffReentrancyProtection() external;
    /// @notice view method for checking cross Silo reentrancy flag
    /// @return entered true if the reentrancy guard is currently set to "entered", which indicates there is a
    /// `nonReentrant` function in the call stack.
    function reentrancyGuardEntered() external view returns (bool entered);
}
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// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC721.sol)
pragma solidity ^0.8.20;
import {IERC721} from "../token/ERC721/IERC721.sol";
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// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;
import {ISilo} from "../interfaces/ISilo.sol";
import {IShareToken} from "../interfaces/IShareToken.sol";
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {ShareTokenLib} from "./ShareTokenLib.sol";
import {CallBeforeQuoteLib} from "./CallBeforeQuoteLib.sol";
import {SiloSolvencyLib} from "./SiloSolvencyLib.sol";
library ShareCollateralTokenLib {
    using CallBeforeQuoteLib for ISiloConfig.ConfigData;
    function isSolventAfterCollateralTransfer(address _sender) external returns (bool isSolvent) {
        IShareToken.ShareTokenStorage storage $ = ShareTokenLib.getShareTokenStorage();
        ISiloConfig siloConfig = $.siloConfig;
        (
            ISiloConfig.DepositConfig memory deposit,
            ISiloConfig.ConfigData memory collateral,
            ISiloConfig.ConfigData memory debt
        ) = siloConfig.getConfigsForWithdraw(address($.silo), _sender);
        // when deposit silo is collateral silo, that means this sToken is collateral for debt
        if (collateral.silo != deposit.silo) return true;
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.28;
import {IERC20Permit} from "openzeppelin5/token/ERC20/extensions/ERC20Permit.sol";
import {ERC20PermitUpgradeable} from "openzeppelin5-upgradeable/token/ERC20/extensions/ERC20PermitUpgradeable.sol";
import {ERC20Upgradeable} from "openzeppelin5-upgradeable/token/ERC20/ERC20Upgradeable.sol";
import {IERC20Metadata, IERC20} from "openzeppelin5/token/ERC20/ERC20.sol";
import {IHookReceiver} from "../interfaces/IHookReceiver.sol";
import {IShareToken, ISilo} from "../interfaces/IShareToken.sol";
import {ISiloConfig} from "../SiloConfig.sol";
import {Hook} from "../lib/Hook.sol";
import {CallBeforeQuoteLib} from "../lib/CallBeforeQuoteLib.sol";
import {NonReentrantLib} from "../lib/NonReentrantLib.sol";
import {ShareTokenLib} from "../lib/ShareTokenLib.sol";
/// @title ShareToken
/// @notice Implements common interface for Silo tokens representing debt or collateral.
/// @dev Docs borrowed from https://github.com/OpenZeppelin/openzeppelin-contracts/tree/v4.9.3
///
/// 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
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
import {IInterestRateModelV2Config} from "./IInterestRateModelV2Config.sol";
interface IInterestRateModelV2 {
    struct Config {
        // uopt ∈ (0, 1) – optimal utilization;
        int256 uopt;
        // ucrit ∈ (uopt, 1) – threshold of large utilization;
        int256 ucrit;
        // ulow ∈ (0, uopt) – threshold of low utilization
        int256 ulow;
        // ki > 0 – integrator gain
        int256 ki;
        // kcrit > 0 – proportional gain for large utilization
        int256 kcrit;
        // klow ≥ 0 – proportional gain for low utilization
        int256 klow;
        // klin ≥ 0 – coefficient of the lower linear bound
        int256 klin;
        // beta ≥ 0 - a scaling factor
        int256 beta;
        // ri ≥ 0 – initial value of the integrator
        int112 ri;
        // Tcrit ≥ 0 - initial value of the time during which the utilization exceeds the critical value
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {Math} from "openzeppelin5/utils/math/Math.sol";
import {ISiloOracle} from "../interfaces/ISiloOracle.sol";
import {SiloStdLib, ISiloConfig, IShareToken, ISilo} from "./SiloStdLib.sol";
import {SiloMathLib} from "./SiloMathLib.sol";
import {Rounding} from "./Rounding.sol";
library SiloSolvencyLib {
    using Math for uint256;
    struct LtvData {
        ISiloOracle collateralOracle;
        ISiloOracle debtOracle;
        uint256 borrowerProtectedAssets;
        uint256 borrowerCollateralAssets;
        uint256 borrowerDebtAssets;
    }
    uint256 internal constant _PRECISION_DECIMALS = 1e18;
    uint256 internal constant _INFINITY = type(uint256).max;
    /// @notice Determines if a borrower is solvent based on the Loan-to-Value (LTV) ratio
    /// @param _collateralConfig Configuration data for the collateral
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {ISiloOracle} from "../interfaces/ISiloOracle.sol";
library CallBeforeQuoteLib {
    /// @dev Call `beforeQuote` on the `solvencyOracle` oracle
    /// @param _config Silo config data
    function callSolvencyOracleBeforeQuote(ISiloConfig.ConfigData memory _config) internal {
        if (_config.callBeforeQuote && _config.solvencyOracle != address(0)) {
            ISiloOracle(_config.solvencyOracle).beforeQuote(_config.token);
        }
    }
    /// @dev Call `beforeQuote` on the `maxLtvOracle` oracle
    /// @param _config Silo config data
    function callMaxLtvOracleBeforeQuote(ISiloConfig.ConfigData memory _config) internal {
        if (_config.callBeforeQuote && _config.maxLtvOracle != address(0)) {
            ISiloOracle(_config.maxLtvOracle).beforeQuote(_config.token);
        }
    }
}
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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.28;
import {ISiloConfig} from "../interfaces/ISiloConfig.sol";
import {ICrossReentrancyGuard} from "../interfaces/ICrossReentrancyGuard.sol";
library NonReentrantLib {
    function nonReentrant(ISiloConfig _config) internal view {
        require(!_config.reentrancyGuardEntered(), ICrossReentrancyGuard.CrossReentrantCall());
    }
}
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
interface ISiloOracle {
    /// @notice Hook function to call before `quote` function reads price
    /// @dev This hook function can be used to change state right before the price is read. For example it can be used
    ///      for curve read only reentrancy protection. In majority of implementations this will be an empty function.
    ///      WARNING: reverts are propagated to Silo so if `beforeQuote` reverts, Silo reverts as well.
    /// @param _baseToken Address of priced token
    function beforeQuote(address _baseToken) external;
    /// @return quoteAmount Returns quote price for _baseAmount of _baseToken
    /// @param _baseAmount Amount of priced token
    /// @param _baseToken Address of priced token
    function quote(uint256 _baseAmount, address _baseToken) external view returns (uint256 quoteAmount);
    /// @return address of token in which quote (price) is denominated
    function quoteToken() external view returns (address);
}
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// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
interface IInterestRateModel {
    event InterestRateModelError();
    /// @dev Sets config address for all Silos that will use this model
    /// @param _irmConfig address of IRM config contract
    function initialize(address _irmConfig) external;
    /// @dev get compound interest rate and update model storage for current block.timestamp
    /// @param _collateralAssets total silo collateral assets
    /// @param _debtAssets total silo debt assets
    /// @param _interestRateTimestamp last IRM timestamp
    /// @return rcomp compounded interest rate from last update until now (1e18 == 100%)
    function getCompoundInterestRateAndUpdate(
        uint256 _collateralAssets,
        uint256 _debtAssets,
        uint256 _interestRateTimestamp
    )
        external
        returns (uint256 rcomp);
    /// @dev get compound interest rate
    /// @param _silo address of Silo for which interest rate should be calculated
    /// @param _blockTimestamp current block timestamp
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// 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);
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// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol)
pragma solidity ^0.8.20;
import {Math} from "./math/Math.sol";
import {SignedMath} from "./math/SignedMath.sol";
/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant HEX_DIGITS = "0123456789abcdef";
    uint8 private constant ADDRESS_LENGTH = 20;
    /**
     * @dev The `value` string doesn't fit in the specified `length`.
     */
    error StringsInsufficientHexLength(uint256 value, uint256 length);
    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
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