Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.25;

import {IERC20} from "../lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
import {ReentrancyGuard} from "../lib/openzeppelin-contracts/contracts/utils/ReentrancyGuard.sol";
import {SafeERC20} from "../lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import {IZivoeTranches} from "./IZivoeTranches.sol";
import {IZivoeVault} from "./IZivoeVault.sol";

interface IERC20Permit {
    function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s)
        external;
}

/// @title ZivoeRouter - A router for ZivoeVault interactions
/// @notice This contract facilitates batched transactions for deposits and withdrawals to ZivoeVault
contract ZivoeRouter is ReentrancyGuard {
    using SafeERC20 for IERC20;

    IERC20 public immutable zSTT;
    IERC20 public immutable ZVE;
    IZivoeTranches public immutable ZVT;
    IZivoeVault public immutable VLT;

    /// @notice Constructor to initialize the router
    /// @param _zSTT The zSTT token address
    /// @param _ZVE The ZVE token address
    /// @param _ZVT The ZivoeTranches contract address
    /// @param _VLT The ZivoeVault contract address
    constructor(IERC20 _zSTT, IERC20 _ZVE, IZivoeTranches _ZVT, IZivoeVault _VLT) {
        zSTT = _zSTT;
        ZVE = _ZVE;
        ZVT = _ZVT;
        VLT = _VLT;
    }

    /// @notice Allows a user to deposit USDC, mint zSTT, deposit into ZivoeVault, and receive vault tokens.
    /// @param amount The amount of USDC to deposit.
    function depositVault(address stablecoin, uint256 amount) external nonReentrant {
        require(amount > 0, "Amount must be greater than zero");

        IERC20 USD = IERC20(stablecoin);

        // Pull USDC, mint zSTT
        USD.safeTransferFrom(msg.sender, address(this), amount);
        USD.safeIncreaseAllowance(address(ZVT), amount);
        ZVT.depositSenior(amount, stablecoin);

        // Transfer ZVE if minted during depositSenior()
        uint256 balZVE = ZVE.balanceOf(address(this));
        if (balZVE > 0) {
            ZVE.safeTransfer(msg.sender, balZVE);
        }

        // Deposit zSTT to vault (receiver is mgs.sender)
        uint256 zSTT_bal = zSTT.balanceOf(address(this));
        zSTT.safeIncreaseAllowance(address(VLT), zSTT_bal);
        VLT.deposit(zSTT_bal, address(msg.sender));
    }

    /// @notice Allows a user to deposit USDC using a permit, mint zSTT, deposit into ZivoeVault, and receive vault tokens.
    /// @param owner The owner of the assets to be deposited.
    /// @param amount The amount of USDC to deposit.
    /// @param deadline The permit signature expiration time.
    /// @param v The recovery byte of the permit signature.
    /// @param r The first 32 bytes of the permit signature.
    /// @param s The second 32 bytes of the permit signature.
    function depositWithPermit(address owner, address stablecoin, uint256 amount, uint256 deadline, uint8 v, bytes32 r, bytes32 s)
        external
        nonReentrant
    {
        require(amount > 0, "Amount must be greater than zero");

        IERC20 USD = IERC20(stablecoin);

        // Use permit to approve USDC
        IERC20Permit(stablecoin).permit(owner, address(this), amount, deadline, v, r, s);

        // Continue with deposit logic
        USD.safeTransferFrom(owner, address(this), amount);
        USD.safeIncreaseAllowance(address(ZVT), amount);
        ZVT.depositSenior(amount, stablecoin);

        // Transfer ZVE if minted during depositSenior()
        uint256 balZVE = ZVE.balanceOf(address(this));
        if (balZVE > 0) {
            ZVE.safeTransfer(owner, balZVE);
        }

        // Deposit zSTT to vault (receiver is owner)
        uint256 zSTT_bal = zSTT.balanceOf(address(this));
        zSTT.safeIncreaseAllowance(address(VLT), zSTT_bal);
        VLT.deposit(zSTT_bal, owner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (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) (interfaces/IERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

// 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 v5.1.0) (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 v5.1.0) (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 {
    /**
     * @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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    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.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    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).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            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 silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (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
            assembly ("memory-safe") {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert Errors.FailedCall();
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Errors.sol)

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.
 *
 * _Available since v5.1._
 */
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();

    /**
     * @dev A necessary precompile is missing.
     */
    error MissingPrecompile(address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.25;

/// @title IZivoeTranches Interface
/// @notice Interface for the ZivoeTranches contract, responsible for minting zSTT by depositing stablecoins.
interface IZivoeTranches {
    function depositSenior(uint256 amount, address asset) external;
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.25;

/// @title IZivoeVault Interface
/// @notice Interface for the ZivoeVault contract
interface IZivoeVault {
    function deposit(uint256 assets, address receiver) external returns (uint256);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 10
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IERC20","name":"_zSTT","type":"address"},{"internalType":"contract IERC20","name":"_ZVE","type":"address"},{"internalType":"contract IZivoeTranches","name":"_ZVT","type":"address"},{"internalType":"contract IZivoeVault","name":"_VLT","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[],"name":"VLT","outputs":[{"internalType":"contract IZivoeVault","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ZVE","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ZVT","outputs":[{"internalType":"contract IZivoeTranches","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"stablecoin","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"depositVault","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"stablecoin","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"depositWithPermit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"zSTT","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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

0000000000000000000000007aa5bf30042b2145b9f0629ea68de55b42ad3bb6000000000000000000000000e412d46a0fbd567332b7689cfffe1f8a4f19a9d20000000000000000000000006282b480f0b989f0b603f821a840d964bc4715a800000000000000000000000094babe9ee75c38034920bc6ed42748e8eefbedd4

-----Decoded View---------------
Arg [0] : _zSTT (address): 0x7aA5Bf30042b2145B9F0629ea68De55B42ad3BB6
Arg [1] : _ZVE (address): 0xe412D46a0fBD567332b7689cFFfE1F8A4f19A9d2
Arg [2] : _ZVT (address): 0x6282b480F0b989F0B603f821a840d964bc4715A8
Arg [3] : _VLT (address): 0x94BaBe9Ee75C38034920bC6ed42748E8eEFbedd4

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000007aa5bf30042b2145b9f0629ea68de55b42ad3bb6
Arg [1] : 000000000000000000000000e412d46a0fbd567332b7689cfffe1f8a4f19a9d2
Arg [2] : 0000000000000000000000006282b480f0b989f0b603f821a840d964bc4715a8
Arg [3] : 00000000000000000000000094babe9ee75c38034920bc6ed42748e8eefbedd4