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Contract Source Code Verified (Exact Match)

Contract Name:
Swapper1InchV6

Compiler Version
v0.8.25+commit.b61c2a91

Optimization Enabled:
Yes with 500 runs

Other Settings:
cancun EvmVersion
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.25;

/**
 * @notice 1Inch Pathfinder V6 implementation of the general ISwapper interface.
 * @author ether.fi [[email protected]]
 * @dev This contract is not expected to hold any funds
 * @dev It is possible that dust token amounts are left in this contract after a swap.
 * This can happen with some tokens that don't send the full transfer amount.
 * These dust amounts can build up over time and be used by anyone who calls the `swap` function.
 */
import {SafeERC20, IERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IAggregationExecutor, IOneInchRouterV6, SwapDescription} from "./interfaces/IOneInch.sol";
import {ISwapper} from "./interfaces/ISwapper.sol";
import {ReentrancyGuardTransient} from "./utils/ReentrancyGuardTransient.sol";

/**
 * @title Swapper1InchV6
 * @notice 1Inch Pathfinder V6 implementation of the general ISwapper interface.
 */
contract Swapper1InchV6 is ISwapper, ReentrancyGuardTransient {
    using SafeERC20 for IERC20;

    address public constant ETH = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    /// @notice 1Inch router contract to give allowance to perform swaps
    address public immutable swapRouter;

    error ToAssetBalanceDecreased();
    error OutputLessThanMinAmount();
    error SwapFailed();

    constructor(address _swapRouter) {
        swapRouter = _swapRouter;
    }

    /**
     * @notice Strategist swaps assets sitting in the contract of the `assetHolder`.
     * @param _fromAsset The token address of the asset being sold by the vault.
     * @param _toAsset The token address of the asset being purchased by the vault.
     * @param _fromAssetAmount The amount of assets being sold by the vault.
     * @param _minToAssetAmount The minimum amount of assets to be purchased.
     * @param _data RLP encoded executer address and bytes data. This is re-encoded tx.data from 1Inch swap API
     */
    function swap(
        address _fromAsset,
        address _toAsset,
        uint256 _fromAssetAmount,
        uint256 _minToAssetAmount,
        bytes calldata _data
    ) external nonReentrant returns (uint256 toAssetAmount) {
        if (IERC20(_fromAsset).allowance(address(this), swapRouter) < _fromAssetAmount) 
            IERC20(_fromAsset).forceApprove(swapRouter, type(uint256).max);

        uint256 toAssetBalBefore = IERC20(_toAsset).balanceOf(msg.sender);

        (bool success, ) = swapRouter.call(_data);        
        if (!success) revert SwapFailed();

        uint256 toAssetBalAfter = IERC20(_toAsset).balanceOf(msg.sender);
        if (toAssetBalAfter < toAssetBalBefore) revert ToAssetBalanceDecreased();
        if ((toAssetBalAfter - toAssetBalBefore) < _minToAssetAmount) revert OutputLessThanMinAmount();

        return toAssetBalAfter - toAssetBalBefore;
    }
}

// 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 {
    /**
     * @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).
     *
     * 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
pragma solidity ^0.8.25;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/// 1Inch swap data
struct SwapDescription {
    IERC20 srcToken; // contract address of a token to sell
    IERC20 dstToken; // contract address of a token to buy
    address payable srcReceiver;
    address payable dstReceiver; // Receiver of destination currency. default: fromAddress
    uint256 amount;
    uint256 minReturnAmount;
    uint256 flags;
}

/// @title Interface for making arbitrary calls during swap
interface IAggregationExecutor {
    /// @notice propagates information about original msg.sender and executes arbitrary data
    function execute(address msgSender) external payable returns (uint256); // 0x4b64e492
}

interface IOneInchRouterV6 {
    type Address is uint256;

    /**
     * @notice Performs a swap, delegating all calls encoded in `data` to `executor`. See tests for usage examples.
     * @dev Router keeps 1 wei of every token on the contract balance for gas optimisations reasons.
     *      This affects first swap of every token by leaving 1 wei on the contract.
     * @param executor Aggregation executor that executes calls described in `data`.
     * @param desc Swap description.
     * @param data Encoded calls that `caller` should execute in between of swaps.
     * @return returnAmount Resulting token amount.
     * @return spentAmount Source token amount.
     */
    function swap(
        IAggregationExecutor executor,
        SwapDescription calldata desc,
        bytes calldata data
    ) external payable returns (uint256 returnAmount, uint256 spentAmount);

    /**
     * @notice Swaps `amount` of the specified `token` for another token using an Unoswap-compatible exchange's pool,
     *         sending the resulting tokens to the `to` address, with a minimum return specified by `minReturn`.
     * @param to The address to receive the swapped tokens.
     * @param token The address of the token to be swapped.
     * @param amount The amount of tokens to be swapped.
     * @param minReturn The minimum amount of tokens to be received after the swap.
     * @param dex The address of the Unoswap-compatible exchange's pool.
     * @return returnAmount The actual amount of tokens received after the swap.
     */
    function unoswapTo(
        uint256 to,
        uint256 token,
        uint256 amount,
        uint256 minReturn,
        uint256 dex
    ) external returns (uint256 returnAmount);

    /**
     * @notice Swaps `amount` of the specified `token` for another token using two Unoswap-compatible exchange pools (`dex` and `dex2`) sequentially,
     *         sending the resulting tokens to the `to` address, with a minimum return specified by `minReturn`.
     * @param to The address to receive the swapped tokens.
     * @param token The address of the token to be swapped.
     * @param amount The amount of tokens to be swapped.
     * @param minReturn The minimum amount of tokens to be received after the swap.
     * @param dex The address of the first Unoswap-compatible exchange's pool.
     * @param dex2 The address of the second Unoswap-compatible exchange's pool.
     * @return returnAmount The actual amount of tokens received after the swap through both pools.
     */
    function unoswapTo2(
        uint256 to,
        uint256 token,
        uint256 amount,
        uint256 minReturn,
        uint256 dex,
        uint256 dex2
    ) external returns (uint256 returnAmount);
}

File 4 of 13 : ISwapper.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.25;

interface ISwapper {
    /**
     * @notice Strategist swaps assets sitting in the contract of the `assetHolder`
     * @param _fromAsset The token address of the asset being sold by the vault
     * @param _toAsset The token address of the asset being purchased by the vault
     * @param _fromAssetAmount The amount of assets being sold by the vault
     * @param _minToAssetAmount The minimum amount of assets to be purchased
     * @param _data Swap data
     */
    function swap(
        address _fromAsset,
        address _toAsset,
        uint256 _fromAssetAmount,
        uint256 _minToAssetAmount,
        bytes calldata _data
    ) external returns (uint256 toAssetAmount);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.24;

import {TransientSlot} from "./TransientSlot.sol";

// The MIT License (MIT)

// Copyright (c) 2016-2024 Zeppelin Group Ltd

// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:

// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

/**
 * @dev Variant of {ReentrancyGuard} that uses transient storage.
 *
 * NOTE: This variant only works on networks where EIP-1153 is available.
 *
 * _Available since v5.1._
 */
abstract contract ReentrancyGuardTransient {
    using TransientSlot for *;

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ReentrancyGuard")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant REENTRANCY_GUARD_STORAGE =
        0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00;

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

    /**
     * @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 (_reentrancyGuardEntered()) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        REENTRANCY_GUARD_STORAGE.asBoolean().tstore(true);
    }

    function _nonReentrantAfter() private {
        REENTRANCY_GUARD_STORAGE.asBoolean().tstore(false);
    }

    /**
     * @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 REENTRANCY_GUARD_STORAGE.asBoolean().tload();
    }
}

// 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
            assembly ("memory-safe") {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert Errors.FailedCall();
        }
    }
}

// SPDX-License-Identifier: MIT
// This file was procedurally generated from scripts/generate/templates/TransientSlot.js.

// The MIT License (MIT)

// Copyright (c) 2016-2024 Zeppelin Group Ltd

// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:

// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

pragma solidity ^0.8.24;

/**
 * @dev Library for reading and writing value-types to specific transient storage slots.
 *
 * Transient slots are often used to store temporary values that are removed after the current transaction.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 *  * Example reading and writing values using transient storage:
 * ```solidity
 * contract Lock {
 *     using TransientSlot for *;
 *
 *     // Define the slot. Alternatively, use the SlotDerivation library to derive the slot.
 *     bytes32 internal constant _LOCK_SLOT = 0xf4678858b2b588224636b8522b729e7722d32fc491da849ed75b3fdf3c84f542;
 *
 *     modifier locked() {
 *         require(!_LOCK_SLOT.asBoolean().tload());
 *
 *         _LOCK_SLOT.asBoolean().tstore(true);
 *         _;
 *         _LOCK_SLOT.asBoolean().tstore(false);
 *     }
 * }
 * ```
 *
 * TIP: Consider using this library along with {SlotDerivation}.
 */
library TransientSlot {
    /**
     * @dev UDVT that represent a slot holding a address.
     */
    type AddressSlot is bytes32;

    /**
     * @dev Cast an arbitrary slot to a AddressSlot.
     */
    function asAddress(bytes32 slot) internal pure returns (AddressSlot) {
        return AddressSlot.wrap(slot);
    }

    /**
     * @dev UDVT that represent a slot holding a bool.
     */
    type BooleanSlot is bytes32;

    /**
     * @dev Cast an arbitrary slot to a BooleanSlot.
     */
    function asBoolean(bytes32 slot) internal pure returns (BooleanSlot) {
        return BooleanSlot.wrap(slot);
    }

    /**
     * @dev UDVT that represent a slot holding a bytes32.
     */
    type Bytes32Slot is bytes32;

    /**
     * @dev Cast an arbitrary slot to a Bytes32Slot.
     */
    function asBytes32(bytes32 slot) internal pure returns (Bytes32Slot) {
        return Bytes32Slot.wrap(slot);
    }

    /**
     * @dev UDVT that represent a slot holding a uint256.
     */
    type Uint256Slot is bytes32;

    /**
     * @dev Cast an arbitrary slot to a Uint256Slot.
     */
    function asUint256(bytes32 slot) internal pure returns (Uint256Slot) {
        return Uint256Slot.wrap(slot);
    }

    /**
     * @dev UDVT that represent a slot holding a int256.
     */
    type Int256Slot is bytes32;

    /**
     * @dev Cast an arbitrary slot to a Int256Slot.
     */
    function asInt256(bytes32 slot) internal pure returns (Int256Slot) {
        return Int256Slot.wrap(slot);
    }

    /**
     * @dev Load the value held at location `slot` in transient storage.
     */
    function tload(AddressSlot slot) internal view returns (address value) {
        assembly ("memory-safe") {
            value := tload(slot)
        }
    }

    /**
     * @dev Store `value` at location `slot` in transient storage.
     */
    function tstore(AddressSlot slot, address value) internal {
        assembly ("memory-safe") {
            tstore(slot, value)
        }
    }

    /**
     * @dev Load the value held at location `slot` in transient storage.
     */
    function tload(BooleanSlot slot) internal view returns (bool value) {
        assembly ("memory-safe") {
            value := tload(slot)
        }
    }

    /**
     * @dev Store `value` at location `slot` in transient storage.
     */
    function tstore(BooleanSlot slot, bool value) internal {
        assembly ("memory-safe") {
            tstore(slot, value)
        }
    }

    /**
     * @dev Load the value held at location `slot` in transient storage.
     */
    function tload(Bytes32Slot slot) internal view returns (bytes32 value) {
        assembly ("memory-safe") {
            value := tload(slot)
        }
    }

    /**
     * @dev Store `value` at location `slot` in transient storage.
     */
    function tstore(Bytes32Slot slot, bytes32 value) internal {
        assembly ("memory-safe") {
            tstore(slot, value)
        }
    }

    /**
     * @dev Load the value held at location `slot` in transient storage.
     */
    function tload(Uint256Slot slot) internal view returns (uint256 value) {
        assembly ("memory-safe") {
            value := tload(slot)
        }
    }

    /**
     * @dev Store `value` at location `slot` in transient storage.
     */
    function tstore(Uint256Slot slot, uint256 value) internal {
        assembly ("memory-safe") {
            tstore(slot, value)
        }
    }

    /**
     * @dev Load the value held at location `slot` in transient storage.
     */
    function tload(Int256Slot slot) internal view returns (int256 value) {
        assembly ("memory-safe") {
            value := tload(slot)
        }
    }

    /**
     * @dev Store `value` at location `slot` in transient storage.
     */
    function tstore(Int256Slot slot, int256 value) internal {
        assembly ("memory-safe") {
            tstore(slot, value)
        }
    }
}

File 10 of 13 : IERC20.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";

File 11 of 13 : IERC165.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";

File 12 of 13 : Errors.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.
 *
 * _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 v5.0.0) (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);
}

Settings
{
  "remappings": [
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "@openzeppelin-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "ds-test/=lib/openzeppelin-contracts-upgradeable/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "halmos-cheatcodes/=lib/openzeppelin-contracts-upgradeable/lib/halmos-cheatcodes/src/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 500
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": true,
  "libraries": {}
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"address","name":"_swapRouter","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"OutputLessThanMinAmount","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[],"name":"SwapFailed","type":"error"},{"inputs":[],"name":"ToAssetBalanceDecreased","type":"error"},{"inputs":[],"name":"ETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_fromAsset","type":"address"},{"internalType":"address","name":"_toAsset","type":"address"},{"internalType":"uint256","name":"_fromAssetAmount","type":"uint256"},{"internalType":"uint256","name":"_minToAssetAmount","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"swap","outputs":[{"internalType":"uint256","name":"toAssetAmount","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"swapRouter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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

Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000111111125421ca6dc452d289314280a0f8842a65

-----Decoded View---------------
Arg [0] : _swapRouter (address): 0x111111125421cA6dc452d289314280a0f8842A65

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000111111125421ca6dc452d289314280a0f8842a65


Block Uncle Number Difficulty Gas Used Reward
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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.