Contract 0x6D2457a4ad276000A615295f7A80F79E48CcD318

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * 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[EIP 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
pragma solidity 0.8.9;

import {Pausable} from "@openzeppelin/contracts/security/Pausable.sol";
import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol";

/**
 * @title ControlledGateway
 * @notice Base Contract for both L1 and L2 LPT gateways. Provides AccessControl.
 * Gateways can be paused by the admin to stop outgoing token migrations
 */
contract ControlledGateway is AccessControl, Pausable {
    address public immutable l1Lpt;
    address public immutable l2Lpt;

    constructor(address _l1Lpt, address _l2Lpt) {
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);

        l1Lpt = _l1Lpt;
        l2Lpt = _l2Lpt;
    }

    function pause() external onlyRole(DEFAULT_ADMIN_ROLE) {
        _pause();
    }

    function unpause() external onlyRole(DEFAULT_ADMIN_ROLE) {
        _unpause();
    }
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface IL1LPTGateway {
    event DepositInitiated(
        address _l1Token,
        address indexed _from,
        address indexed _to,
        uint256 indexed _sequenceNumber,
        uint256 _amount
    );

    event WithdrawalFinalized(
        address _l1Token,
        address indexed _from,
        address indexed _to,
        uint256 indexed _exitNum,
        uint256 _amount
    );

    function outboundTransfer(
        address _l1Token,
        address _to,
        uint256 _amount,
        uint256 _maxGas,
        uint256 _gasPriceBid,
        bytes calldata _data
    ) external payable returns (bytes memory);

    function finalizeInboundTransfer(
        address _token,
        address _from,
        address _to,
        uint256 _amount,
        bytes calldata _data
    ) external;

    // if token is not supported this should return 0x0 address
    function calculateL2TokenAddress(address l1Token)
        external
        view
        returns (address);

    // used by router
    function counterpartGateway() external view returns (address);
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface IL2LPTGateway {
    event DepositFinalized(
        address indexed _l1Token,
        address indexed _from,
        address indexed _to,
        uint256 _amount
    );

    event WithdrawalInitiated(
        address _l1Token,
        address indexed _from,
        address indexed _to,
        uint256 indexed _l2ToL1Id,
        uint256 _exitNum,
        uint256 _amount
    );

    function outboundTransfer(
        address _token,
        address _to,
        uint256 _amount,
        bytes calldata _data
    ) external returns (bytes memory);

    function finalizeInboundTransfer(
        address _token,
        address _from,
        address _to,
        uint256 _amount,
        bytes calldata _data
    ) external;

    // if token is not supported this should return 0x0 address
    function calculateL2TokenAddress(address _l1Token)
        external
        view
        returns (address);

    // used by router
    function counterpartGateway() external view returns (address);
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import {IArbSys} from "../../arbitrum/IArbSys.sol";

abstract contract L2ArbitrumMessenger {
    event TxToL1(
        address indexed _from,
        address indexed _to,
        uint256 indexed _id,
        bytes _data
    );

    function sendTxToL1(
        address user,
        address to,
        bytes memory data
    ) internal returns (uint256) {
        // note: this method doesn't support sending ether to L1 together with a call
        uint256 id = IArbSys(address(100)).sendTxToL1(to, data);
        emit TxToL1(user, to, id, data);
        return id;
    }

    modifier onlyL1Counterpart(address l1Counterpart) {
        require(
            msg.sender == applyL1ToL2Alias(l1Counterpart),
            "ONLY_COUNTERPART_GATEWAY"
        );
        _;
    }

    uint160 internal constant OFFSET =
        uint160(0x1111000000000000000000000000000000001111);

    // l1 addresses are transformed durng l1->l2 calls
    function applyL1ToL2Alias(address l1Address)
        internal
        pure
        returns (address l2Address)
    {
        l2Address = address(uint160(l1Address) + OFFSET);
    }
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import {ControlledGateway} from "../../ControlledGateway.sol";
import {L2ArbitrumMessenger} from "./L2ArbitrumMessenger.sol";
import {IL2LPTGateway} from "./IL2LPTGateway.sol";
import {IL1LPTGateway} from "../../L1/gateway/IL1LPTGateway.sol";

interface Mintable {
    function mint(address _to, uint256 _amount) external;

    function burnFrom(address _from, uint256 _amount) external;
}

interface IL2LPTDataCache {
    function increaseL2SupplyFromL1(uint256 _amount) external;

    function decreaseL2SupplyFromL1(uint256 _amount) external;
}

/**
 * @title L2LPTGateway
 * @notice Manages inbound and outbound transfers of LPT between Arbitrum Rollup and L1
 * @dev the contract can be paused by the governor which will prevent any outbound transfers
 * but pausing the contract does not affect inbound transfers (tokens coming from L1)
 */
contract L2LPTGateway is IL2LPTGateway, ControlledGateway, L2ArbitrumMessenger {
    address public immutable l2Router;
    address public immutable l2LPTDataCache;

    address public l1Counterpart;

    event L1CounterpartUpdate(address _l1Counterpart);

    constructor(
        address _l2Router,
        address _l1Lpt,
        address _l2Lpt,
        address _l2LPTDataCache
    ) ControlledGateway(_l1Lpt, _l2Lpt) {
        l2Router = _l2Router;
        l2LPTDataCache = _l2LPTDataCache;

        _pause();
    }

    /**
     * @notice Sets address of companion L1LPTGateway
     * @dev Only address with the governor role is allowed to change the value of l1Counterpart
     * @param _l1Counterpart L1 Address of the counterpart
     */
    function setCounterpart(address _l1Counterpart)
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        l1Counterpart = _l1Counterpart;
        emit L1CounterpartUpdate(_l1Counterpart);
    }

    /**
     * @notice Burns L2 tokens and sends a message to L1
     * The tokens will be received on L1 only after the wait period (7 days) is over
     * @dev no additional callhook data is allowed
     * @param _l1Token L1 Address of LPT
     * @param _to Recipient address on L1
     * @param _amount Amount of tokens to burn
     * @param _data Contains sender and additional data to send to L1
     * @return ID of the withdraw tx
     */
    function outboundTransfer(
        address _l1Token,
        address _to,
        uint256 _amount,
        bytes calldata _data
    ) external override returns (bytes memory) {
        return outboundTransfer(_l1Token, _to, _amount, 0, 0, _data);
    }

    /**
     * @notice Burns L2 tokens and sends a message to L1
     * The tokens will be received on L1 only after the wait period (7 days) is over
     * @dev no additional callhook data is allowed
     * @param _l1Token L1 Address of LPT
     * @param _to Recipient address on L1
     * @param _amount Amount of tokens to burn
     * @param _data Contains sender and additional data (always zero) to send to L1
     * @return ID of the withdraw tx
     */
    function outboundTransfer(
        address _l1Token,
        address _to,
        uint256 _amount,
        uint256, // maxGas
        uint256, // gasPriceBid
        bytes calldata _data
    ) public whenNotPaused returns (bytes memory) {
        require(_l1Token == l1Lpt, "TOKEN_NOT_LPT");
        require(_amount > 0, "INVALID_ZERO_AMOUNT");

        (address from, bytes memory extraData) = parseOutboundData(_data);
        require(extraData.length == 0, "CALL_HOOK_DATA_NOT_ALLOWED");

        // from needs to approve this contract to burn the amount first
        Mintable(l2Lpt).burnFrom(from, _amount);
        IL2LPTDataCache(l2LPTDataCache).decreaseL2SupplyFromL1(_amount);

        uint256 id = sendTxToL1(
            from,
            l1Counterpart,
            getOutboundCalldata(_l1Token, from, _to, _amount, extraData)
        );

        // we don't need to track exitNums (b/c we have no fast exits) so we always use 0
        emit WithdrawalInitiated(_l1Token, from, _to, id, 0, _amount);

        return abi.encode(id);
    }

    /**
     * @notice Receives token amount from L1 and mints the equivalent tokens to the receiving address
     * @dev can only accept txs coming directly from L1 LPT Gateway
     * data param is unused because no additional data is allowed from L1
     * @param _l1Token L1 Address of LPT
     * @param _from Address of the sender on L1
     * @param _to Recepient address on L2
     * @param _amount Amount of tokens transferred
     */
    function finalizeInboundTransfer(
        address _l1Token,
        address _from,
        address _to,
        uint256 _amount,
        bytes calldata // data -- unused
    ) external override onlyL1Counterpart(l1Counterpart) {
        require(_l1Token == l1Lpt, "TOKEN_NOT_LPT");

        Mintable(l2Lpt).mint(_to, _amount);
        IL2LPTDataCache(l2LPTDataCache).increaseL2SupplyFromL1(_amount);

        emit DepositFinalized(_l1Token, _from, _to, _amount);
    }

    /**
     * @notice Decodes calldata required for migration of tokens
     * @dev extraData can be left empty
     * @param data Encoded callhook data
     * @return from Sender of the tx
     * @return extraData Any other data sent to L1
     */
    function parseOutboundData(bytes memory data)
        private
        view
        returns (address from, bytes memory extraData)
    {
        if (msg.sender == l2Router) {
            (from, extraData) = abi.decode(data, (address, bytes));
        } else {
            from = msg.sender;
            extraData = data;
        }
    }

    /**
     * @notice returns address of L1 LPT Gateway
     */
    function counterpartGateway() external view override returns (address) {
        return l1Counterpart;
    }

    /**
     * @notice returns address of L2 version of LPT
     */
    function calculateL2TokenAddress(address l1Token)
        external
        view
        override
        returns (address)
    {
        if (l1Token != l1Lpt) {
            return address(0);
        }

        return l2Lpt;
    }

    /**
     * @notice Creates calldata required to send tx to L1
     * @dev encodes the target function with its params which
     * will be called on L1 when the message is received on L1
     */
    function getOutboundCalldata(
        address token,
        address from,
        address to,
        uint256 amount,
        bytes memory data
    ) public pure returns (bytes memory outboundCalldata) {
        outboundCalldata = abi.encodeWithSelector(
            IL1LPTGateway.finalizeInboundTransfer.selector,
            token,
            from,
            to,
            amount,
            abi.encode(0, data) // we don't need to track exitNums (b/c we have no fast exits) so we always use 0
        );
    }
}

// SPDX-License-Identifier: Apache-2.0

/*
 * Copyright 2021, Offchain Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

pragma solidity 0.8.9;

/**
 * @title Precompiled contract that exists in every Arbitrum chain at address(100), 0x0000000000000000000000000000000000000064. Exposes a variety of system-level functionality.
 */
interface IArbSys {
    /**
     * @notice Get internal version number identifying an ArbOS build
     * @return version number as int
     */
    function arbOSVersion() external pure returns (uint256);

    function arbChainID() external view returns (uint256);

    /**
     * @notice Get Arbitrum block number (distinct from L1 block number; Arbitrum genesis block has block number 0)
     * @return block number as int
     */
    function arbBlockNumber() external view returns (uint256);

    /**
     * @notice Send given amount of Eth to dest from sender.
     * This is a convenience function, which is equivalent to calling sendTxToL1 with empty calldataForL1.
     * @param destination recipient address on L1
     * @return unique identifier for this L2-to-L1 transaction.
     */
    function withdrawEth(address destination)
        external
        payable
        returns (uint256);

    /**
     * @notice Send a transaction to L1
     * @param destination recipient address on L1
     * @param calldataForL1 (optional) calldata for L1 contract call
     * @return a unique identifier for this L2-to-L1 transaction.
     */
    function sendTxToL1(address destination, bytes calldata calldataForL1)
        external
        payable
        returns (uint256);

    /**
     * @notice get the number of transactions issued by the given external account or the account sequence number of the given contract
     * @param account target account
     * @return the number of transactions issued by the given external account or the account sequence number of the given contract
     */
    function getTransactionCount(address account)
        external
        view
        returns (uint256);

    /**
     * @notice get the value of target L2 storage slot
     * This function is only callable from address 0 to prevent contracts from being able to call it
     * @param account target account
     * @param index target index of storage slot
     * @return stotage value for the given account at the given index
     */
    function getStorageAt(address account, uint256 index)
        external
        view
        returns (uint256);

    /**
     * @notice check if current call is coming from l1
     * @return true if the caller of this was called directly from L1
     */
    function isTopLevelCall() external view returns (bool);

    event EthWithdrawal(address indexed destAddr, uint256 amount);

    event L2ToL1Transaction(
        address caller,
        address indexed destination,
        uint256 indexed uniqueId,
        uint256 indexed batchNumber,
        uint256 indexInBatch,
        uint256 arbBlockNum,
        uint256 ethBlockNum,
        uint256 timestamp,
        uint256 callvalue,
        bytes data
    );
}

{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

[{"inputs":[{"internalType":"address","name":"_l2Router","type":"address"},{"internalType":"address","name":"_l1Lpt","type":"address"},{"internalType":"address","name":"_l2Lpt","type":"address"},{"internalType":"address","name":"_l2LPTDataCache","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_l1Token","type":"address"},{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"DepositFinalized","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_l1Counterpart","type":"address"}],"name":"L1CounterpartUpdate","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":true,"internalType":"uint256","name":"_id","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"_data","type":"bytes"}],"name":"TxToL1","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_l1Token","type":"address"},{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"},{"indexed":true,"internalType":"uint256","name":"_l2ToL1Id","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_exitNum","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"WithdrawalInitiated","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"l1Token","type":"address"}],"name":"calculateL2TokenAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"counterpartGateway","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_l1Token","type":"address"},{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"finalizeInboundTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"getOutboundCalldata","outputs":[{"internalType":"bytes","name":"outboundCalldata","type":"bytes"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"l1Counterpart","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"l1Lpt","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"l2LPTDataCache","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"l2Lpt","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"l2Router","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_l1Token","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"outboundTransfer","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_l1Token","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"outboundTransfer","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_l1Counterpart","type":"address"}],"name":"setCounterpart","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000005288c571fd7ad117bea99bf60fe0846c4e84f93300000000000000000000000058b6a8a3302369daec383334672404ee733ab239000000000000000000000000289ba1701c2f088cf0faf8b3705246331cb8a839000000000000000000000000d78b6bd09cd28a83cfb21afa0da95c685a6bb0b1

-----Decoded View---------------
Arg [0] : _l2Router (address): 0x5288c571fd7ad117bea99bf60fe0846c4e84f933
Arg [1] : _l1Lpt (address): 0x58b6a8a3302369daec383334672404ee733ab239
Arg [2] : _l2Lpt (address): 0x289ba1701c2f088cf0faf8b3705246331cb8a839
Arg [3] : _l2LPTDataCache (address): 0xd78b6bd09cd28a83cfb21afa0da95c685a6bb0b1

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000005288c571fd7ad117bea99bf60fe0846c4e84f933
Arg [1] : 00000000000000000000000058b6a8a3302369daec383334672404ee733ab239
Arg [2] : 000000000000000000000000289ba1701c2f088cf0faf8b3705246331cb8a839
Arg [3] : 000000000000000000000000d78b6bd09cd28a83cfb21afa0da95c685a6bb0b1