// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
// Contracts
import { StandardBridge } from "src/universal/StandardBridge.sol";
// Libraries
import { Predeploys } from "src/libraries/Predeploys.sol";
// Interfaces
import { ISemver } from "interfaces/universal/ISemver.sol";
import { ICrossDomainMessenger } from "interfaces/universal/ICrossDomainMessenger.sol";
import { ISuperchainConfig } from "interfaces/L1/ISuperchainConfig.sol";
/// @custom:proxied true
/// @title L1StandardBridge
/// @notice The L1StandardBridge is responsible for transfering ETH and ERC20 tokens between L1 and
///         L2. In the case that an ERC20 token is native to L1, it will be escrowed within this
///         contract. If the ERC20 token is native to L2, it will be burnt. Before Bedrock, ETH was
///         stored within this contract. After Bedrock, ETH is instead stored inside the
///         OptimismPortal contract.
///         NOTE: this contract is not intended to support all variations of ERC20 tokens. Examples
///         of some token types that may not be properly supported by this contract include, but are
///         not limited to: tokens with transfer fees, rebasing tokens, and tokens with blocklists.
contract L1StandardBridge is StandardBridge, ISemver {
    /// @custom:legacy
    /// @notice Emitted whenever a deposit of ETH from L1 into L2 is initiated.
    /// @param from      Address of the depositor.
    /// @param to        Address of the recipient on L2.
    /// @param amount    Amount of ETH deposited.
    /// @param extraData Extra data attached to the deposit.
    event ETHDepositInitiated(address indexed from, address indexed to, uint256 amount, bytes extraData);
    /// @custom:legacy
    /// @notice Emitted whenever a withdrawal of ETH from L2 to L1 is finalized.
    /// @param from      Address of the withdrawer.
    /// @param to        Address of the recipient on L1.
    /// @param amount    Amount of ETH withdrawn.
    /// @param extraData Extra data attached to the withdrawal.
    event ETHWithdrawalFinalized(address indexed from, address indexed to, uint256 amount, bytes extraData);
    /// @custom:legacy
    /// @notice Emitted whenever an ERC20 deposit is initiated.
    /// @param l1Token   Address of the token on L1.
    /// @param l2Token   Address of the corresponding token on L2.
    /// @param from      Address of the depositor.
    /// @param to        Address of the recipient on L2.
    /// @param amount    Amount of the ERC20 deposited.
    /// @param extraData Extra data attached to the deposit.
    event ERC20DepositInitiated(
        address indexed l1Token,
        address indexed l2Token,
        address indexed from,
        address to,
        uint256 amount,
        bytes extraData
    );
    /// @custom:legacy
    /// @notice Emitted whenever an ERC20 withdrawal is finalized.
    /// @param l1Token   Address of the token on L1.
    /// @param l2Token   Address of the corresponding token on L2.
    /// @param from      Address of the withdrawer.
    /// @param to        Address of the recipient on L1.
    /// @param amount    Amount of the ERC20 withdrawn.
    /// @param extraData Extra data attached to the withdrawal.
    event ERC20WithdrawalFinalized(
        address indexed l1Token,
        address indexed l2Token,
        address indexed from,
        address to,
        uint256 amount,
        bytes extraData
    );
    /// @notice Semantic version.
    /// @custom:semver 2.3.0
    string public constant version = "2.3.0";
    /// @notice Address of the SuperchainConfig contract.
    ISuperchainConfig public superchainConfig;
    /// @custom:legacy
    /// @custom:spacer systemConfig
    /// @notice Spacer taking up the legacy `systemConfig` slot.
    address private spacer_51_0_20;
    /// @notice Constructs the L1StandardBridge contract.
    constructor() StandardBridge() {
        _disableInitializers();
    }
    /// @notice Initializer.
    /// @param _messenger        Contract for the CrossDomainMessenger on this network.
    /// @param _superchainConfig Contract for the SuperchainConfig on this network.
    function initialize(ICrossDomainMessenger _messenger, ISuperchainConfig _superchainConfig) external initializer {
        superchainConfig = _superchainConfig;
        __StandardBridge_init({
            _messenger: _messenger,
            _otherBridge: StandardBridge(payable(Predeploys.L2_STANDARD_BRIDGE))
        });
    }
    /// @inheritdoc StandardBridge
    function paused() public view override returns (bool) {
        return superchainConfig.paused();
    }
    /// @notice Allows EOAs to bridge ETH by sending directly to the bridge.
    receive() external payable override onlyEOA {
        _initiateETHDeposit(msg.sender, msg.sender, RECEIVE_DEFAULT_GAS_LIMIT, bytes(""));
    }
    /// @custom:legacy
    /// @notice Deposits some amount of ETH into the sender's account on L2.
    /// @param _minGasLimit Minimum gas limit for the deposit message on L2.
    /// @param _extraData   Optional data to forward to L2.
    ///                     Data supplied here will not be used to execute any code on L2 and is
    ///                     only emitted as extra data for the convenience of off-chain tooling.
    function depositETH(uint32 _minGasLimit, bytes calldata _extraData) external payable onlyEOA {
        _initiateETHDeposit(msg.sender, msg.sender, _minGasLimit, _extraData);
    }
    /// @custom:legacy
    /// @notice Deposits some amount of ETH into a target account on L2.
    ///         Note that if ETH is sent to a contract on L2 and the call fails, then that ETH will
    ///         be locked in the L2StandardBridge. ETH may be recoverable if the call can be
    ///         successfully replayed by increasing the amount of gas supplied to the call. If the
    ///         call will fail for any amount of gas, then the ETH will be locked permanently.
    /// @param _to          Address of the recipient on L2.
    /// @param _minGasLimit Minimum gas limit for the deposit message on L2.
    /// @param _extraData   Optional data to forward to L2.
    ///                     Data supplied here will not be used to execute any code on L2 and is
    ///                     only emitted as extra data for the convenience of off-chain tooling.
    function depositETHTo(address _to, uint32 _minGasLimit, bytes calldata _extraData) external payable {
        _initiateETHDeposit(msg.sender, _to, _minGasLimit, _extraData);
    }
    /// @custom:legacy
    /// @notice Deposits some amount of ERC20 tokens into the sender's account on L2.
    /// @param _l1Token     Address of the L1 token being deposited.
    /// @param _l2Token     Address of the corresponding token on L2.
    /// @param _amount      Amount of the ERC20 to deposit.
    /// @param _minGasLimit Minimum gas limit for the deposit message on L2.
    /// @param _extraData   Optional data to forward to L2.
    ///                     Data supplied here will not be used to execute any code on L2 and is
    ///                     only emitted as extra data for the convenience of off-chain tooling.
    function depositERC20(
        address _l1Token,
        address _l2Token,
        uint256 _amount,
        uint32 _minGasLimit,
        bytes calldata _extraData
    )
        external
        virtual
        onlyEOA
    {
        _initiateERC20Deposit(_l1Token, _l2Token, msg.sender, msg.sender, _amount, _minGasLimit, _extraData);
    }
    /// @custom:legacy
    /// @notice Deposits some amount of ERC20 tokens into a target account on L2.
    /// @param _l1Token     Address of the L1 token being deposited.
    /// @param _l2Token     Address of the corresponding token on L2.
    /// @param _to          Address of the recipient on L2.
    /// @param _amount      Amount of the ERC20 to deposit.
    /// @param _minGasLimit Minimum gas limit for the deposit message on L2.
    /// @param _extraData   Optional data to forward to L2.
    ///                     Data supplied here will not be used to execute any code on L2 and is
    ///                     only emitted as extra data for the convenience of off-chain tooling.
    function depositERC20To(
        address _l1Token,
        address _l2Token,
        address _to,
        uint256 _amount,
        uint32 _minGasLimit,
        bytes calldata _extraData
    )
        external
        virtual
    {
        _initiateERC20Deposit(_l1Token, _l2Token, msg.sender, _to, _amount, _minGasLimit, _extraData);
    }
    /// @custom:legacy
    /// @notice Finalizes a withdrawal of ETH from L2.
    /// @param _from      Address of the withdrawer on L2.
    /// @param _to        Address of the recipient on L1.
    /// @param _amount    Amount of ETH to withdraw.
    /// @param _extraData Optional data forwarded from L2.
    function finalizeETHWithdrawal(
        address _from,
        address _to,
        uint256 _amount,
        bytes calldata _extraData
    )
        external
        payable
    {
        finalizeBridgeETH(_from, _to, _amount, _extraData);
    }
    /// @custom:legacy
    /// @notice Finalizes a withdrawal of ERC20 tokens from L2.
    /// @param _l1Token   Address of the token on L1.
    /// @param _l2Token   Address of the corresponding token on L2.
    /// @param _from      Address of the withdrawer on L2.
    /// @param _to        Address of the recipient on L1.
    /// @param _amount    Amount of the ERC20 to withdraw.
    /// @param _extraData Optional data forwarded from L2.
    function finalizeERC20Withdrawal(
        address _l1Token,
        address _l2Token,
        address _from,
        address _to,
        uint256 _amount,
        bytes calldata _extraData
    )
        external
    {
        finalizeBridgeERC20(_l1Token, _l2Token, _from, _to, _amount, _extraData);
    }
    /// @custom:legacy
    /// @notice Retrieves the access of the corresponding L2 bridge contract.
    /// @return Address of the corresponding L2 bridge contract.
    function l2TokenBridge() external view returns (address) {
        return address(otherBridge);
    }
    /// @notice Internal function for initiating an ETH deposit.
    /// @param _from        Address of the sender on L1.
    /// @param _to          Address of the recipient on L2.
    /// @param _minGasLimit Minimum gas limit for the deposit message on L2.
    /// @param _extraData   Optional data to forward to L2.
    function _initiateETHDeposit(address _from, address _to, uint32 _minGasLimit, bytes memory _extraData) internal {
        _initiateBridgeETH(_from, _to, msg.value, _minGasLimit, _extraData);
    }
    /// @notice Internal function for initiating an ERC20 deposit.
    /// @param _l1Token     Address of the L1 token being deposited.
    /// @param _l2Token     Address of the corresponding token on L2.
    /// @param _from        Address of the sender on L1.
    /// @param _to          Address of the recipient on L2.
    /// @param _amount      Amount of the ERC20 to deposit.
    /// @param _minGasLimit Minimum gas limit for the deposit message on L2.
    /// @param _extraData   Optional data to forward to L2.
    function _initiateERC20Deposit(
        address _l1Token,
        address _l2Token,
        address _from,
        address _to,
        uint256 _amount,
        uint32 _minGasLimit,
        bytes memory _extraData
    )
        internal
    {
        _initiateBridgeERC20(_l1Token, _l2Token, _from, _to, _amount, _minGasLimit, _extraData);
    }
    /// @inheritdoc StandardBridge
    /// @notice Emits the legacy ETHDepositInitiated event followed by the ETHBridgeInitiated event.
    ///         This is necessary for backwards compatibility with the legacy bridge.
    function _emitETHBridgeInitiated(
        address _from,
        address _to,
        uint256 _amount,
        bytes memory _extraData
    )
        internal
        override
    {
        emit ETHDepositInitiated(_from, _to, _amount, _extraData);
        super._emitETHBridgeInitiated(_from, _to, _amount, _extraData);
    }
    /// @inheritdoc StandardBridge
    /// @notice Emits the legacy ERC20DepositInitiated event followed by the ERC20BridgeInitiated
    ///         event. This is necessary for backwards compatibility with the legacy bridge.
    function _emitETHBridgeFinalized(
        address _from,
        address _to,
        uint256 _amount,
        bytes memory _extraData
    )
        internal
        override
    {
        emit ETHWithdrawalFinalized(_from, _to, _amount, _extraData);
        super._emitETHBridgeFinalized(_from, _to, _amount, _extraData);
    }
    /// @inheritdoc StandardBridge
    /// @notice Emits the legacy ERC20WithdrawalFinalized event followed by the ERC20BridgeFinalized
    ///         event. This is necessary for backwards compatibility with the legacy bridge.
    function _emitERC20BridgeInitiated(
        address _localToken,
        address _remoteToken,
        address _from,
        address _to,
        uint256 _amount,
        bytes memory _extraData
    )
        internal
        override
    {
        emit ERC20DepositInitiated(_localToken, _remoteToken, _from, _to, _amount, _extraData);
        super._emitERC20BridgeInitiated(_localToken, _remoteToken, _from, _to, _amount, _extraData);
    }
    /// @inheritdoc StandardBridge
    /// @notice Emits the legacy ERC20WithdrawalFinalized event followed by the ERC20BridgeFinalized
    ///         event. This is necessary for backwards compatibility with the legacy bridge.
    function _emitERC20BridgeFinalized(
        address _localToken,
        address _remoteToken,
        address _from,
        address _to,
        uint256 _amount,
        bytes memory _extraData
    )
        internal
        override
    {
        emit ERC20WithdrawalFinalized(_localToken, _remoteToken, _from, _to, _amount, _extraData);
        super._emitERC20BridgeFinalized(_localToken, _remoteToken, _from, _to, _amount, _extraData);
    }
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
// Contracts
import { Initializable } from "@openzeppelin/contracts/proxy/utils/Initializable.sol";
// Libraries
import { ERC165Checker } from "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { SafeCall } from "src/libraries/SafeCall.sol";
import { EOA } from "src/libraries/EOA.sol";
// Interfaces
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IOptimismMintableERC20 } from "interfaces/universal/IOptimismMintableERC20.sol";
import { ILegacyMintableERC20 } from "interfaces/legacy/ILegacyMintableERC20.sol";
import { ICrossDomainMessenger } from "interfaces/universal/ICrossDomainMessenger.sol";
/// @custom:upgradeable
/// @title StandardBridge
/// @notice StandardBridge is a base contract for the L1 and L2 standard ERC20 bridges. It handles
///         the core bridging logic, including escrowing tokens that are native to the local chain
///         and minting/burning tokens that are native to the remote chain.
abstract contract StandardBridge is Initializable {
    using SafeERC20 for IERC20;
    /// @notice The L2 gas limit set when eth is depoisited using the receive() function.
    uint32 internal constant RECEIVE_DEFAULT_GAS_LIMIT = 200_000;
    /// @custom:legacy
    /// @custom:spacer messenger
    /// @notice Spacer for backwards compatibility.
    bytes30 private spacer_0_2_30;
    /// @custom:legacy
    /// @custom:spacer l2TokenBridge
    /// @notice Spacer for backwards compatibility.
    address private spacer_1_0_20;
    /// @notice Mapping that stores deposits for a given pair of local and remote tokens.
    mapping(address => mapping(address => uint256)) public deposits;
    /// @notice Messenger contract on this domain.
    /// @custom:network-specific
    ICrossDomainMessenger public messenger;
    /// @notice Corresponding bridge on the other domain.
    /// @custom:network-specific
    StandardBridge public otherBridge;
    /// @notice Reserve extra slots (to a total of 50) in the storage layout for future upgrades.
    ///         A gap size of 45 was chosen here, so that the first slot used in a child contract
    ///         would be a multiple of 50.
    uint256[45] private __gap;
    /// @notice Emitted when an ETH bridge is initiated to the other chain.
    /// @param from      Address of the sender.
    /// @param to        Address of the receiver.
    /// @param amount    Amount of ETH sent.
    /// @param extraData Extra data sent with the transaction.
    event ETHBridgeInitiated(address indexed from, address indexed to, uint256 amount, bytes extraData);
    /// @notice Emitted when an ETH bridge is finalized on this chain.
    /// @param from      Address of the sender.
    /// @param to        Address of the receiver.
    /// @param amount    Amount of ETH sent.
    /// @param extraData Extra data sent with the transaction.
    event ETHBridgeFinalized(address indexed from, address indexed to, uint256 amount, bytes extraData);
    /// @notice Emitted when an ERC20 bridge is initiated to the other chain.
    /// @param localToken  Address of the ERC20 on this chain.
    /// @param remoteToken Address of the ERC20 on the remote chain.
    /// @param from        Address of the sender.
    /// @param to          Address of the receiver.
    /// @param amount      Amount of the ERC20 sent.
    /// @param extraData   Extra data sent with the transaction.
    event ERC20BridgeInitiated(
        address indexed localToken,
        address indexed remoteToken,
        address indexed from,
        address to,
        uint256 amount,
        bytes extraData
    );
    /// @notice Emitted when an ERC20 bridge is finalized on this chain.
    /// @param localToken  Address of the ERC20 on this chain.
    /// @param remoteToken Address of the ERC20 on the remote chain.
    /// @param from        Address of the sender.
    /// @param to          Address of the receiver.
    /// @param amount      Amount of the ERC20 sent.
    /// @param extraData   Extra data sent with the transaction.
    event ERC20BridgeFinalized(
        address indexed localToken,
        address indexed remoteToken,
        address indexed from,
        address to,
        uint256 amount,
        bytes extraData
    );
    /// @notice Only allow EOAs to call the functions. Note that this is not safe against contracts
    ///         calling code within their constructors, but also doesn't really matter since we're
    ///         just trying to prevent users accidentally depositing with smart contract wallets.
    modifier onlyEOA() {
        require(EOA.isSenderEOA(), "StandardBridge: function can only be called from an EOA");
        _;
    }
    /// @notice Ensures that the caller is a cross-chain message from the other bridge.
    modifier onlyOtherBridge() {
        require(
            msg.sender == address(messenger) && messenger.xDomainMessageSender() == address(otherBridge),
            "StandardBridge: function can only be called from the other bridge"
        );
        _;
    }
    /// @notice Initializer.
    /// @param _messenger   Contract for CrossDomainMessenger on this network.
    /// @param _otherBridge Contract for the other StandardBridge contract.
    function __StandardBridge_init(
        ICrossDomainMessenger _messenger,
        StandardBridge _otherBridge
    )
        internal
        onlyInitializing
    {
        messenger = _messenger;
        otherBridge = _otherBridge;
    }
    /// @notice Allows EOAs to bridge ETH by sending directly to the bridge.
    ///         Must be implemented by contracts that inherit.
    receive() external payable virtual;
    /// @notice Getter for messenger contract.
    ///         Public getter is legacy and will be removed in the future. Use `messenger` instead.
    /// @return Contract of the messenger on this domain.
    /// @custom:legacy
    function MESSENGER() external view returns (ICrossDomainMessenger) {
        return messenger;
    }
    /// @notice Getter for the other bridge contract.
    ///         Public getter is legacy and will be removed in the future. Use `otherBridge` instead.
    /// @return Contract of the bridge on the other network.
    /// @custom:legacy
    function OTHER_BRIDGE() external view returns (StandardBridge) {
        return otherBridge;
    }
    /// @notice This function should return true if the contract is paused.
    ///         On L1 this function will check the SuperchainConfig for its paused status.
    ///         On L2 this function should be a no-op.
    /// @return Whether or not the contract is paused.
    function paused() public view virtual returns (bool) {
        return false;
    }
    /// @notice Sends ETH to the sender's address on the other chain.
    /// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
    /// @param _extraData   Extra data to be sent with the transaction. Note that the recipient will
    ///                     not be triggered with this data, but it will be emitted and can be used
    ///                     to identify the transaction.
    function bridgeETH(uint32 _minGasLimit, bytes calldata _extraData) public payable onlyEOA {
        _initiateBridgeETH(msg.sender, msg.sender, msg.value, _minGasLimit, _extraData);
    }
    /// @notice Sends ETH to a receiver's address on the other chain. Note that if ETH is sent to a
    ///         smart contract and the call fails, the ETH will be temporarily locked in the
    ///         StandardBridge on the other chain until the call is replayed. If the call cannot be
    ///         replayed with any amount of gas (call always reverts), then the ETH will be
    ///         permanently locked in the StandardBridge on the other chain. ETH will also
    ///         be locked if the receiver is the other bridge, because finalizeBridgeETH will revert
    ///         in that case.
    /// @param _to          Address of the receiver.
    /// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
    /// @param _extraData   Extra data to be sent with the transaction. Note that the recipient will
    ///                     not be triggered with this data, but it will be emitted and can be used
    ///                     to identify the transaction.
    function bridgeETHTo(address _to, uint32 _minGasLimit, bytes calldata _extraData) public payable {
        _initiateBridgeETH(msg.sender, _to, msg.value, _minGasLimit, _extraData);
    }
    /// @notice Sends ERC20 tokens to the sender's address on the other chain.
    /// @param _localToken  Address of the ERC20 on this chain.
    /// @param _remoteToken Address of the corresponding token on the remote chain.
    /// @param _amount      Amount of local tokens to deposit.
    /// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
    /// @param _extraData   Extra data to be sent with the transaction. Note that the recipient will
    ///                     not be triggered with this data, but it will be emitted and can be used
    ///                     to identify the transaction.
    function bridgeERC20(
        address _localToken,
        address _remoteToken,
        uint256 _amount,
        uint32 _minGasLimit,
        bytes calldata _extraData
    )
        public
        virtual
        onlyEOA
    {
        _initiateBridgeERC20(_localToken, _remoteToken, msg.sender, msg.sender, _amount, _minGasLimit, _extraData);
    }
    /// @notice Sends ERC20 tokens to a receiver's address on the other chain.
    /// @param _localToken  Address of the ERC20 on this chain.
    /// @param _remoteToken Address of the corresponding token on the remote chain.
    /// @param _to          Address of the receiver.
    /// @param _amount      Amount of local tokens to deposit.
    /// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
    /// @param _extraData   Extra data to be sent with the transaction. Note that the recipient will
    ///                     not be triggered with this data, but it will be emitted and can be used
    ///                     to identify the transaction.
    function bridgeERC20To(
        address _localToken,
        address _remoteToken,
        address _to,
        uint256 _amount,
        uint32 _minGasLimit,
        bytes calldata _extraData
    )
        public
        virtual
    {
        _initiateBridgeERC20(_localToken, _remoteToken, msg.sender, _to, _amount, _minGasLimit, _extraData);
    }
    /// @notice Finalizes an ETH bridge on this chain. Can only be triggered by the other
    ///         StandardBridge contract on the remote chain.
    /// @param _from      Address of the sender.
    /// @param _to        Address of the receiver.
    /// @param _amount    Amount of ETH being bridged.
    /// @param _extraData Extra data to be sent with the transaction. Note that the recipient will
    ///                   not be triggered with this data, but it will be emitted and can be used
    ///                   to identify the transaction.
    function finalizeBridgeETH(
        address _from,
        address _to,
        uint256 _amount,
        bytes calldata _extraData
    )
        public
        payable
        onlyOtherBridge
    {
        require(paused() == false, "StandardBridge: paused");
        require(msg.value == _amount, "StandardBridge: amount sent does not match amount required");
        require(_to != address(this), "StandardBridge: cannot send to self");
        require(_to != address(messenger), "StandardBridge: cannot send to messenger");
        // Emit the correct events. By default this will be _amount, but child
        // contracts may override this function in order to emit legacy events as well.
        _emitETHBridgeFinalized(_from, _to, _amount, _extraData);
        bool success = SafeCall.call(_to, gasleft(), _amount, hex"");
        require(success, "StandardBridge: ETH transfer failed");
    }
    /// @notice Finalizes an ERC20 bridge on this chain. Can only be triggered by the other
    ///         StandardBridge contract on the remote chain.
    /// @param _localToken  Address of the ERC20 on this chain.
    /// @param _remoteToken Address of the corresponding token on the remote chain.
    /// @param _from        Address of the sender.
    /// @param _to          Address of the receiver.
    /// @param _amount      Amount of the ERC20 being bridged.
    /// @param _extraData   Extra data to be sent with the transaction. Note that the recipient will
    ///                     not be triggered with this data, but it will be emitted and can be used
    ///                     to identify the transaction.
    function finalizeBridgeERC20(
        address _localToken,
        address _remoteToken,
        address _from,
        address _to,
        uint256 _amount,
        bytes calldata _extraData
    )
        public
        onlyOtherBridge
    {
        require(paused() == false, "StandardBridge: paused");
        if (_isOptimismMintableERC20(_localToken)) {
            require(
                _isCorrectTokenPair(_localToken, _remoteToken),
                "StandardBridge: wrong remote token for Optimism Mintable ERC20 local token"
            );
            IOptimismMintableERC20(_localToken).mint(_to, _amount);
        } else {
            deposits[_localToken][_remoteToken] = deposits[_localToken][_remoteToken] - _amount;
            IERC20(_localToken).safeTransfer(_to, _amount);
        }
        // Emit the correct events. By default this will be ERC20BridgeFinalized, but child
        // contracts may override this function in order to emit legacy events as well.
        _emitERC20BridgeFinalized(_localToken, _remoteToken, _from, _to, _amount, _extraData);
    }
    /// @notice Initiates a bridge of ETH through the CrossDomainMessenger.
    /// @param _from        Address of the sender.
    /// @param _to          Address of the receiver.
    /// @param _amount      Amount of ETH being bridged.
    /// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
    /// @param _extraData   Extra data to be sent with the transaction. Note that the recipient will
    ///                     not be triggered with this data, but it will be emitted and can be used
    ///                     to identify the transaction.
    function _initiateBridgeETH(
        address _from,
        address _to,
        uint256 _amount,
        uint32 _minGasLimit,
        bytes memory _extraData
    )
        internal
    {
        require(msg.value == _amount, "StandardBridge: bridging ETH must include sufficient ETH value");
        // Emit the correct events. By default this will be _amount, but child
        // contracts may override this function in order to emit legacy events as well.
        _emitETHBridgeInitiated(_from, _to, _amount, _extraData);
        messenger.sendMessage{ value: _amount }({
            _target: address(otherBridge),
            _message: abi.encodeWithSelector(this.finalizeBridgeETH.selector, _from, _to, _amount, _extraData),
            _minGasLimit: _minGasLimit
        });
    }
    /// @notice Sends ERC20 tokens to a receiver's address on the other chain.
    /// @param _localToken  Address of the ERC20 on this chain.
    /// @param _remoteToken Address of the corresponding token on the remote chain.
    /// @param _to          Address of the receiver.
    /// @param _amount      Amount of local tokens to deposit.
    /// @param _minGasLimit Minimum amount of gas that the bridge can be relayed with.
    /// @param _extraData   Extra data to be sent with the transaction. Note that the recipient will
    ///                     not be triggered with this data, but it will be emitted and can be used
    ///                     to identify the transaction.
    function _initiateBridgeERC20(
        address _localToken,
        address _remoteToken,
        address _from,
        address _to,
        uint256 _amount,
        uint32 _minGasLimit,
        bytes memory _extraData
    )
        internal
    {
        require(msg.value == 0, "StandardBridge: cannot send value");
        if (_isOptimismMintableERC20(_localToken)) {
            require(
                _isCorrectTokenPair(_localToken, _remoteToken),
                "StandardBridge: wrong remote token for Optimism Mintable ERC20 local token"
            );
            IOptimismMintableERC20(_localToken).burn(_from, _amount);
        } else {
            IERC20(_localToken).safeTransferFrom(_from, address(this), _amount);
            deposits[_localToken][_remoteToken] = deposits[_localToken][_remoteToken] + _amount;
        }
        // Emit the correct events. By default this will be ERC20BridgeInitiated, but child
        // contracts may override this function in order to emit legacy events as well.
        _emitERC20BridgeInitiated(_localToken, _remoteToken, _from, _to, _amount, _extraData);
        messenger.sendMessage({
            _target: address(otherBridge),
            _message: abi.encodeWithSelector(
                this.finalizeBridgeERC20.selector,
                // Because this call will be executed on the remote chain, we reverse the order of
                // the remote and local token addresses relative to their order in the
                // finalizeBridgeERC20 function.
                _remoteToken,
                _localToken,
                _from,
                _to,
                _amount,
                _extraData
            ),
            _minGasLimit: _minGasLimit
        });
    }
    /// @notice Checks if a given address is an OptimismMintableERC20. Not perfect, but good enough.
    ///         Just the way we like it.
    /// @param _token Address of the token to check.
    /// @return True if the token is an OptimismMintableERC20.
    function _isOptimismMintableERC20(address _token) internal view returns (bool) {
        return ERC165Checker.supportsInterface(_token, type(ILegacyMintableERC20).interfaceId)
            || ERC165Checker.supportsInterface(_token, type(IOptimismMintableERC20).interfaceId);
    }
    /// @notice Checks if the "other token" is the correct pair token for the OptimismMintableERC20.
    ///         Calls can be saved in the future by combining this logic with
    ///         `_isOptimismMintableERC20`.
    /// @param _mintableToken OptimismMintableERC20 to check against.
    /// @param _otherToken    Pair token to check.
    /// @return True if the other token is the correct pair token for the OptimismMintableERC20.
    function _isCorrectTokenPair(address _mintableToken, address _otherToken) internal view returns (bool) {
        if (ERC165Checker.supportsInterface(_mintableToken, type(ILegacyMintableERC20).interfaceId)) {
            return _otherToken == ILegacyMintableERC20(_mintableToken).l1Token();
        } else {
            return _otherToken == IOptimismMintableERC20(_mintableToken).remoteToken();
        }
    }
    /// @notice Emits the ETHBridgeInitiated event and if necessary the appropriate legacy event
    ///         when an ETH bridge is finalized on this chain.
    /// @param _from      Address of the sender.
    /// @param _to        Address of the receiver.
    /// @param _amount    Amount of ETH sent.
    /// @param _extraData Extra data sent with the transaction.
    function _emitETHBridgeInitiated(
        address _from,
        address _to,
        uint256 _amount,
        bytes memory _extraData
    )
        internal
        virtual
    {
        emit ETHBridgeInitiated(_from, _to, _amount, _extraData);
    }
    /// @notice Emits the ETHBridgeFinalized and if necessary the appropriate legacy event when an
    ///         ETH bridge is finalized on this chain.
    /// @param _from      Address of the sender.
    /// @param _to        Address of the receiver.
    /// @param _amount    Amount of ETH sent.
    /// @param _extraData Extra data sent with the transaction.
    function _emitETHBridgeFinalized(
        address _from,
        address _to,
        uint256 _amount,
        bytes memory _extraData
    )
        internal
        virtual
    {
        emit ETHBridgeFinalized(_from, _to, _amount, _extraData);
    }
    /// @notice Emits the ERC20BridgeInitiated event and if necessary the appropriate legacy
    ///         event when an ERC20 bridge is initiated to the other chain.
    /// @param _localToken  Address of the ERC20 on this chain.
    /// @param _remoteToken Address of the ERC20 on the remote chain.
    /// @param _from        Address of the sender.
    /// @param _to          Address of the receiver.
    /// @param _amount      Amount of the ERC20 sent.
    /// @param _extraData   Extra data sent with the transaction.
    function _emitERC20BridgeInitiated(
        address _localToken,
        address _remoteToken,
        address _from,
        address _to,
        uint256 _amount,
        bytes memory _extraData
    )
        internal
        virtual
    {
        emit ERC20BridgeInitiated(_localToken, _remoteToken, _from, _to, _amount, _extraData);
    }
    /// @notice Emits the ERC20BridgeFinalized event and if necessary the appropriate legacy
    ///         event when an ERC20 bridge is initiated to the other chain.
    /// @param _localToken  Address of the ERC20 on this chain.
    /// @param _remoteToken Address of the ERC20 on the remote chain.
    /// @param _from        Address of the sender.
    /// @param _to          Address of the receiver.
    /// @param _amount      Amount of the ERC20 sent.
    /// @param _extraData   Extra data sent with the transaction.
    function _emitERC20BridgeFinalized(
        address _localToken,
        address _remoteToken,
        address _from,
        address _to,
        uint256 _amount,
        bytes memory _extraData
    )
        internal
        virtual
    {
        emit ERC20BridgeFinalized(_localToken, _remoteToken, _from, _to, _amount, _extraData);
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title Predeploys
/// @notice Contains constant addresses for protocol contracts that are pre-deployed to the L2 system.
//          This excludes the preinstalls (non-protocol contracts).
library Predeploys {
    /// @notice Number of predeploy-namespace addresses reserved for protocol usage.
    uint256 internal constant PREDEPLOY_COUNT = 2048;
    /// @custom:legacy
    /// @notice Address of the LegacyMessagePasser predeploy. Deprecate. Use the updated
    ///         L2ToL1MessagePasser contract instead.
    address internal constant LEGACY_MESSAGE_PASSER = 0x4200000000000000000000000000000000000000;
    /// @custom:legacy
    /// @notice Address of the L1MessageSender predeploy. Deprecated. Use L2CrossDomainMessenger
    ///         or access tx.origin (or msg.sender) in a L1 to L2 transaction instead.
    ///         Not embedded into new OP-Stack chains.
    address internal constant L1_MESSAGE_SENDER = 0x4200000000000000000000000000000000000001;
    /// @custom:legacy
    /// @notice Address of the DeployerWhitelist predeploy. No longer active.
    address internal constant DEPLOYER_WHITELIST = 0x4200000000000000000000000000000000000002;
    /// @notice Address of the canonical WETH contract.
    address internal constant WETH = 0x4200000000000000000000000000000000000006;
    /// @notice Address of the L2CrossDomainMessenger predeploy.
    address internal constant L2_CROSS_DOMAIN_MESSENGER = 0x4200000000000000000000000000000000000007;
    /// @notice Address of the GasPriceOracle predeploy. Includes fee information
    ///         and helpers for computing the L1 portion of the transaction fee.
    address internal constant GAS_PRICE_ORACLE = 0x420000000000000000000000000000000000000F;
    /// @notice Address of the L2StandardBridge predeploy.
    address internal constant L2_STANDARD_BRIDGE = 0x4200000000000000000000000000000000000010;
    //// @notice Address of the SequencerFeeWallet predeploy.
    address internal constant SEQUENCER_FEE_WALLET = 0x4200000000000000000000000000000000000011;
    /// @notice Address of the OptimismMintableERC20Factory predeploy.
    address internal constant OPTIMISM_MINTABLE_ERC20_FACTORY = 0x4200000000000000000000000000000000000012;
    /// @custom:legacy
    /// @notice Address of the L1BlockNumber predeploy. Deprecated. Use the L1Block predeploy
    ///         instead, which exposes more information about the L1 state.
    address internal constant L1_BLOCK_NUMBER = 0x4200000000000000000000000000000000000013;
    /// @notice Address of the L2ERC721Bridge predeploy.
    address internal constant L2_ERC721_BRIDGE = 0x4200000000000000000000000000000000000014;
    /// @notice Address of the L1Block predeploy.
    address internal constant L1_BLOCK_ATTRIBUTES = 0x4200000000000000000000000000000000000015;
    /// @notice Address of the L2ToL1MessagePasser predeploy.
    address internal constant L2_TO_L1_MESSAGE_PASSER = 0x4200000000000000000000000000000000000016;
    /// @notice Address of the OptimismMintableERC721Factory predeploy.
    address internal constant OPTIMISM_MINTABLE_ERC721_FACTORY = 0x4200000000000000000000000000000000000017;
    /// @notice Address of the ProxyAdmin predeploy.
    address internal constant PROXY_ADMIN = 0x4200000000000000000000000000000000000018;
    /// @notice Address of the BaseFeeVault predeploy.
    address internal constant BASE_FEE_VAULT = 0x4200000000000000000000000000000000000019;
    /// @notice Address of the L1FeeVault predeploy.
    address internal constant L1_FEE_VAULT = 0x420000000000000000000000000000000000001A;
    /// @notice Address of the OperatorFeeVault predeploy.
    address internal constant OPERATOR_FEE_VAULT = 0x420000000000000000000000000000000000001b;
    /// @notice Address of the SchemaRegistry predeploy.
    address internal constant SCHEMA_REGISTRY = 0x4200000000000000000000000000000000000020;
    /// @notice Address of the EAS predeploy.
    address internal constant EAS = 0x4200000000000000000000000000000000000021;
    /// @notice Address of the GovernanceToken predeploy.
    address internal constant GOVERNANCE_TOKEN = 0x4200000000000000000000000000000000000042;
    /// @custom:legacy
    /// @notice Address of the LegacyERC20ETH predeploy. Deprecated. Balances are migrated to the
    ///         state trie as of the Bedrock upgrade. Contract has been locked and write functions
    ///         can no longer be accessed.
    address internal constant LEGACY_ERC20_ETH = 0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000;
    /// @notice Address of the CrossL2Inbox predeploy.
    address internal constant CROSS_L2_INBOX = 0x4200000000000000000000000000000000000022;
    /// @notice Address of the L2ToL2CrossDomainMessenger predeploy.
    address internal constant L2_TO_L2_CROSS_DOMAIN_MESSENGER = 0x4200000000000000000000000000000000000023;
    /// @notice Address of the SuperchainWETH predeploy.
    address internal constant SUPERCHAIN_WETH = 0x4200000000000000000000000000000000000024;
    /// @notice Address of the ETHLiquidity predeploy.
    address internal constant ETH_LIQUIDITY = 0x4200000000000000000000000000000000000025;
    /// @notice Address of the OptimismSuperchainERC20Factory predeploy.
    address internal constant OPTIMISM_SUPERCHAIN_ERC20_FACTORY = 0x4200000000000000000000000000000000000026;
    /// @notice Address of the OptimismSuperchainERC20Beacon predeploy.
    address internal constant OPTIMISM_SUPERCHAIN_ERC20_BEACON = 0x4200000000000000000000000000000000000027;
    // TODO: Precalculate the address of the implementation contract
    /// @notice Arbitrary address of the OptimismSuperchainERC20 implementation contract.
    address internal constant OPTIMISM_SUPERCHAIN_ERC20 = 0xB9415c6cA93bdC545D4c5177512FCC22EFa38F28;
    /// @notice Address of the SuperchainTokenBridge predeploy.
    address internal constant SUPERCHAIN_TOKEN_BRIDGE = 0x4200000000000000000000000000000000000028;
    /// @notice Returns the name of the predeploy at the given address.
    function getName(address _addr) internal pure returns (string memory out_) {
        require(isPredeployNamespace(_addr), "Predeploys: address must be a predeploy");
        if (_addr == LEGACY_MESSAGE_PASSER) return "LegacyMessagePasser";
        if (_addr == L1_MESSAGE_SENDER) return "L1MessageSender";
        if (_addr == DEPLOYER_WHITELIST) return "DeployerWhitelist";
        if (_addr == WETH) return "WETH";
        if (_addr == L2_CROSS_DOMAIN_MESSENGER) return "L2CrossDomainMessenger";
        if (_addr == GAS_PRICE_ORACLE) return "GasPriceOracle";
        if (_addr == L2_STANDARD_BRIDGE) return "L2StandardBridge";
        if (_addr == SEQUENCER_FEE_WALLET) return "SequencerFeeVault";
        if (_addr == OPTIMISM_MINTABLE_ERC20_FACTORY) return "OptimismMintableERC20Factory";
        if (_addr == L1_BLOCK_NUMBER) return "L1BlockNumber";
        if (_addr == L2_ERC721_BRIDGE) return "L2ERC721Bridge";
        if (_addr == L1_BLOCK_ATTRIBUTES) return "L1Block";
        if (_addr == L2_TO_L1_MESSAGE_PASSER) return "L2ToL1MessagePasser";
        if (_addr == OPTIMISM_MINTABLE_ERC721_FACTORY) return "OptimismMintableERC721Factory";
        if (_addr == PROXY_ADMIN) return "ProxyAdmin";
        if (_addr == BASE_FEE_VAULT) return "BaseFeeVault";
        if (_addr == L1_FEE_VAULT) return "L1FeeVault";
        if (_addr == OPERATOR_FEE_VAULT) return "OperatorFeeVault";
        if (_addr == SCHEMA_REGISTRY) return "SchemaRegistry";
        if (_addr == EAS) return "EAS";
        if (_addr == GOVERNANCE_TOKEN) return "GovernanceToken";
        if (_addr == LEGACY_ERC20_ETH) return "LegacyERC20ETH";
        if (_addr == CROSS_L2_INBOX) return "CrossL2Inbox";
        if (_addr == L2_TO_L2_CROSS_DOMAIN_MESSENGER) return "L2ToL2CrossDomainMessenger";
        if (_addr == SUPERCHAIN_WETH) return "SuperchainWETH";
        if (_addr == ETH_LIQUIDITY) return "ETHLiquidity";
        if (_addr == OPTIMISM_SUPERCHAIN_ERC20_FACTORY) return "OptimismSuperchainERC20Factory";
        if (_addr == OPTIMISM_SUPERCHAIN_ERC20_BEACON) return "OptimismSuperchainERC20Beacon";
        if (_addr == SUPERCHAIN_TOKEN_BRIDGE) return "SuperchainTokenBridge";
        revert("Predeploys: unnamed predeploy");
    }
    /// @notice Returns true if the predeploy is not proxied.
    function notProxied(address _addr) internal pure returns (bool) {
        return _addr == GOVERNANCE_TOKEN || _addr == WETH;
    }
    /// @notice Returns true if the address is a defined predeploy that is embedded into new OP-Stack chains.
    function isSupportedPredeploy(address _addr, bool _useInterop) internal pure returns (bool) {
        return _addr == LEGACY_MESSAGE_PASSER || _addr == DEPLOYER_WHITELIST || _addr == WETH
            || _addr == L2_CROSS_DOMAIN_MESSENGER || _addr == GAS_PRICE_ORACLE || _addr == L2_STANDARD_BRIDGE
            || _addr == SEQUENCER_FEE_WALLET || _addr == OPTIMISM_MINTABLE_ERC20_FACTORY || _addr == L1_BLOCK_NUMBER
            || _addr == L2_ERC721_BRIDGE || _addr == L1_BLOCK_ATTRIBUTES || _addr == L2_TO_L1_MESSAGE_PASSER
            || _addr == OPTIMISM_MINTABLE_ERC721_FACTORY || _addr == PROXY_ADMIN || _addr == BASE_FEE_VAULT
            || _addr == L1_FEE_VAULT || _addr == OPERATOR_FEE_VAULT || _addr == SCHEMA_REGISTRY || _addr == EAS
            || _addr == GOVERNANCE_TOKEN || (_useInterop && _addr == CROSS_L2_INBOX)
            || (_useInterop && _addr == L2_TO_L2_CROSS_DOMAIN_MESSENGER) || (_useInterop && _addr == SUPERCHAIN_WETH)
            || (_useInterop && _addr == ETH_LIQUIDITY) || (_useInterop && _addr == SUPERCHAIN_TOKEN_BRIDGE);
    }
    function isPredeployNamespace(address _addr) internal pure returns (bool) {
        return uint160(_addr) >> 11 == uint160(0x4200000000000000000000000000000000000000) >> 11;
    }
    /// @notice Function to compute the expected address of the predeploy implementation
    ///         in the genesis state.
    function predeployToCodeNamespace(address _addr) internal pure returns (address) {
        require(
            isPredeployNamespace(_addr), "Predeploys: can only derive code-namespace address for predeploy addresses"
        );
        return address(
            uint160(uint256(uint160(_addr)) & 0xffff | uint256(uint160(0xc0D3C0d3C0d3C0D3c0d3C0d3c0D3C0d3c0d30000)))
        );
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title ISemver
/// @notice ISemver is a simple contract for ensuring that contracts are
///         versioned using semantic versioning.
interface ISemver {
    /// @notice Getter for the semantic version of the contract. This is not
    ///         meant to be used onchain but instead meant to be used by offchain
    ///         tooling.
    /// @return Semver contract version as a string.
    function version() external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface ICrossDomainMessenger {
    event FailedRelayedMessage(bytes32 indexed msgHash);
    event Initialized(uint8 version);
    event RelayedMessage(bytes32 indexed msgHash);
    event SentMessage(address indexed target, address sender, bytes message, uint256 messageNonce, uint256 gasLimit);
    event SentMessageExtension1(address indexed sender, uint256 value);
    function MESSAGE_VERSION() external view returns (uint16);
    function MIN_GAS_CALLDATA_OVERHEAD() external view returns (uint64);
    function MIN_GAS_DYNAMIC_OVERHEAD_DENOMINATOR() external view returns (uint64);
    function MIN_GAS_DYNAMIC_OVERHEAD_NUMERATOR() external view returns (uint64);
    function OTHER_MESSENGER() external view returns (ICrossDomainMessenger);
    function RELAY_CALL_OVERHEAD() external view returns (uint64);
    function RELAY_CONSTANT_OVERHEAD() external view returns (uint64);
    function RELAY_GAS_CHECK_BUFFER() external view returns (uint64);
    function RELAY_RESERVED_GAS() external view returns (uint64);
    function TX_BASE_GAS() external view returns (uint64);
    function FLOOR_CALLDATA_OVERHEAD() external view returns (uint64);
    function ENCODING_OVERHEAD() external view returns (uint64);
    function baseGas(bytes memory _message, uint32 _minGasLimit) external pure returns (uint64);
    function failedMessages(bytes32) external view returns (bool);
    function messageNonce() external view returns (uint256);
    function otherMessenger() external view returns (ICrossDomainMessenger);
    function paused() external view returns (bool);
    function relayMessage(
        uint256 _nonce,
        address _sender,
        address _target,
        uint256 _value,
        uint256 _minGasLimit,
        bytes memory _message
    )
        external
        payable;
    function sendMessage(address _target, bytes memory _message, uint32 _minGasLimit) external payable;
    function successfulMessages(bytes32) external view returns (bool);
    function xDomainMessageSender() external view returns (address);
    function __constructor__() external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface ISuperchainConfig {
    enum UpdateType {
        GUARDIAN
    }
    event ConfigUpdate(UpdateType indexed updateType, bytes data);
    event Initialized(uint8 version);
    event Paused(string identifier);
    event Unpaused();
    function GUARDIAN_SLOT() external view returns (bytes32);
    function PAUSED_SLOT() external view returns (bytes32);
    function guardian() external view returns (address guardian_);
    function initialize(address _guardian, bool _paused) external;
    function pause(string memory _identifier) external;
    function paused() external view returns (bool paused_);
    function unpause() external;
    function version() external view returns (string memory);
    function __constructor__() external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/Address.sol";
/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;
    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;
    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);
    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!Address.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }
    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
     * initialization step. This is essential to configure modules that are added through upgrades and that require
     * initialization.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }
    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }
    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.2) (utils/introspection/ERC165Checker.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
 * @dev Library used to query support of an interface declared via {IERC165}.
 *
 * Note that these functions return the actual result of the query: they do not
 * `revert` if an interface is not supported. It is up to the caller to decide
 * what to do in these cases.
 */
library ERC165Checker {
    // As per the EIP-165 spec, no interface should ever match 0xffffffff
    bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;
    /**
     * @dev Returns true if `account` supports the {IERC165} interface,
     */
    function supportsERC165(address account) internal view returns (bool) {
        // Any contract that implements ERC165 must explicitly indicate support of
        // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
        return
            _supportsERC165Interface(account, type(IERC165).interfaceId) &&
            !_supportsERC165Interface(account, _INTERFACE_ID_INVALID);
    }
    /**
     * @dev Returns true if `account` supports the interface defined by
     * `interfaceId`. Support for {IERC165} itself is queried automatically.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
        // query support of both ERC165 as per the spec and support of _interfaceId
        return supportsERC165(account) && _supportsERC165Interface(account, interfaceId);
    }
    /**
     * @dev Returns a boolean array where each value corresponds to the
     * interfaces passed in and whether they're supported or not. This allows
     * you to batch check interfaces for a contract where your expectation
     * is that some interfaces may not be supported.
     *
     * See {IERC165-supportsInterface}.
     *
     * _Available since v3.4._
     */
    function getSupportedInterfaces(address account, bytes4[] memory interfaceIds)
        internal
        view
        returns (bool[] memory)
    {
        // an array of booleans corresponding to interfaceIds and whether they're supported or not
        bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);
        // query support of ERC165 itself
        if (supportsERC165(account)) {
            // query support of each interface in interfaceIds
            for (uint256 i = 0; i < interfaceIds.length; i++) {
                interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);
            }
        }
        return interfaceIdsSupported;
    }
    /**
     * @dev Returns true if `account` supports all the interfaces defined in
     * `interfaceIds`. Support for {IERC165} itself is queried automatically.
     *
     * Batch-querying can lead to gas savings by skipping repeated checks for
     * {IERC165} support.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
        // query support of ERC165 itself
        if (!supportsERC165(account)) {
            return false;
        }
        // query support of each interface in _interfaceIds
        for (uint256 i = 0; i < interfaceIds.length; i++) {
            if (!_supportsERC165Interface(account, interfaceIds[i])) {
                return false;
            }
        }
        // all interfaces supported
        return true;
    }
    /**
     * @notice Query if a contract implements an interface, does not check ERC165 support
     * @param account The address of the contract to query for support of an interface
     * @param interfaceId The interface identifier, as specified in ERC-165
     * @return true if the contract at account indicates support of the interface with
     * identifier interfaceId, false otherwise
     * @dev Assumes that account contains a contract that supports ERC165, otherwise
     * the behavior of this method is undefined. This precondition can be checked
     * with {supportsERC165}.
     * Interface identification is specified in ERC-165.
     */
    function _supportsERC165Interface(address account, bytes4 interfaceId) private view returns (bool) {
        // prepare call
        bytes memory encodedParams = abi.encodeWithSelector(IERC165.supportsInterface.selector, interfaceId);
        // perform static call
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly {
            success := staticcall(30000, account, add(encodedParams, 0x20), mload(encodedParams), 0x00, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0x00)
        }
        return success && returnSize >= 0x20 && returnValue > 0;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";
/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;
    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }
    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }
    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }
    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }
    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }
    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.
        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title SafeCall
/// @notice Perform low level safe calls
library SafeCall {
    /// @notice Performs a low level call without copying any returndata.
    /// @dev Passes no calldata to the call context.
    /// @param _target   Address to call
    /// @param _gas      Amount of gas to pass to the call
    /// @param _value    Amount of value to pass to the call
    function send(address _target, uint256 _gas, uint256 _value) internal returns (bool success_) {
        assembly {
            success_ :=
                call(
                    _gas, // gas
                    _target, // recipient
                    _value, // ether value
                    0, // inloc
                    0, // inlen
                    0, // outloc
                    0 // outlen
                )
        }
    }
    /// @notice Perform a low level call with all gas without copying any returndata
    /// @param _target   Address to call
    /// @param _value    Amount of value to pass to the call
    function send(address _target, uint256 _value) internal returns (bool success_) {
        success_ = send(_target, gasleft(), _value);
    }
    /// @notice Perform a low level call without copying any returndata
    /// @param _target   Address to call
    /// @param _gas      Amount of gas to pass to the call
    /// @param _value    Amount of value to pass to the call
    /// @param _calldata Calldata to pass to the call
    function call(
        address _target,
        uint256 _gas,
        uint256 _value,
        bytes memory _calldata
    )
        internal
        returns (bool success_)
    {
        assembly {
            success_ :=
                call(
                    _gas, // gas
                    _target, // recipient
                    _value, // ether value
                    add(_calldata, 32), // inloc
                    mload(_calldata), // inlen
                    0, // outloc
                    0 // outlen
                )
        }
    }
    /// @notice Perform a low level call without copying any returndata
    /// @param _target   Address to call
    /// @param _value    Amount of value to pass to the call
    /// @param _calldata Calldata to pass to the call
    function call(address _target, uint256 _value, bytes memory _calldata) internal returns (bool success_) {
        success_ = call({ _target: _target, _gas: gasleft(), _value: _value, _calldata: _calldata });
    }
    /// @notice Perform a low level call without copying any returndata
    /// @param _target   Address to call
    /// @param _calldata Calldata to pass to the call
    function call(address _target, bytes memory _calldata) internal returns (bool success_) {
        success_ = call({ _target: _target, _gas: gasleft(), _value: 0, _calldata: _calldata });
    }
    /// @notice Helper function to determine if there is sufficient gas remaining within the context
    ///         to guarantee that the minimum gas requirement for a call will be met as well as
    ///         optionally reserving a specified amount of gas for after the call has concluded.
    /// @param _minGas      The minimum amount of gas that may be passed to the target context.
    /// @param _reservedGas Optional amount of gas to reserve for the caller after the execution
    ///                     of the target context.
    /// @return `true` if there is enough gas remaining to safely supply `_minGas` to the target
    ///         context as well as reserve `_reservedGas` for the caller after the execution of
    ///         the target context.
    /// @dev !!!!! FOOTGUN ALERT !!!!!
    ///      1.) The 40_000 base buffer is to account for the worst case of the dynamic cost of the
    ///          `CALL` opcode's `address_access_cost`, `positive_value_cost`, and
    ///          `value_to_empty_account_cost` factors with an added buffer of 5,700 gas. It is
    ///          still possible to self-rekt by initiating a withdrawal with a minimum gas limit
    ///          that does not account for the `memory_expansion_cost` & `code_execution_cost`
    ///          factors of the dynamic cost of the `CALL` opcode.
    ///      2.) This function should *directly* precede the external call if possible. There is an
    ///          added buffer to account for gas consumed between this check and the call, but it
    ///          is only 5,700 gas.
    ///      3.) Because EIP-150 ensures that a maximum of 63/64ths of the remaining gas in the call
    ///          frame may be passed to a subcontext, we need to ensure that the gas will not be
    ///          truncated.
    ///      4.) Use wisely. This function is not a silver bullet.
    function hasMinGas(uint256 _minGas, uint256 _reservedGas) internal view returns (bool) {
        bool _hasMinGas;
        assembly {
            // Equation: gas × 63 ≥ minGas × 64 + 63(40_000 + reservedGas)
            _hasMinGas := iszero(lt(mul(gas(), 63), add(mul(_minGas, 64), mul(add(40000, _reservedGas), 63))))
        }
        return _hasMinGas;
    }
    /// @notice Perform a low level call without copying any returndata. This function
    ///         will revert if the call cannot be performed with the specified minimum
    ///         gas.
    /// @param _target   Address to call
    /// @param _minGas   The minimum amount of gas that may be passed to the call
    /// @param _value    Amount of value to pass to the call
    /// @param _calldata Calldata to pass to the call
    function callWithMinGas(
        address _target,
        uint256 _minGas,
        uint256 _value,
        bytes memory _calldata
    )
        internal
        returns (bool)
    {
        bool _success;
        bool _hasMinGas = hasMinGas(_minGas, 0);
        assembly {
            // Assertion: gasleft() >= (_minGas * 64) / 63 + 40_000
            if iszero(_hasMinGas) {
                // Store the "Error(string)" selector in scratch space.
                mstore(0, 0x08c379a0)
                // Store the pointer to the string length in scratch space.
                mstore(32, 32)
                // Store the string.
                //
                // SAFETY:
                // - We pad the beginning of the string with two zero bytes as well as the
                // length (24) to ensure that we override the free memory pointer at offset
                // 0x40. This is necessary because the free memory pointer is likely to
                // be greater than 1 byte when this function is called, but it is incredibly
                // unlikely that it will be greater than 3 bytes. As for the data within
                // 0x60, it is ensured that it is 0 due to 0x60 being the zero offset.
                // - It's fine to clobber the free memory pointer, we're reverting.
                mstore(88, 0x0000185361666543616c6c3a204e6f7420656e6f75676820676173)
                // Revert with 'Error("SafeCall: Not enough gas")'
                revert(28, 100)
            }
            // The call will be supplied at least ((_minGas * 64) / 63) gas due to the
            // above assertion. This ensures that, in all circumstances (except for when the
            // `_minGas` does not account for the `memory_expansion_cost` and `code_execution_cost`
            // factors of the dynamic cost of the `CALL` opcode), the call will receive at least
            // the minimum amount of gas specified.
            _success :=
                call(
                    gas(), // gas
                    _target, // recipient
                    _value, // ether value
                    add(_calldata, 32), // inloc
                    mload(_calldata), // inlen
                    0x00, // outloc
                    0x00 // outlen
                )
        }
        return _success;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title EOA
/// @notice A library for detecting if an address is an EOA.
library EOA {
    /// @notice Returns true if sender address is an EOA.
    /// @return isEOA_ True if the sender address is an EOA.
    function isSenderEOA() internal view returns (bool isEOA_) {
        if (msg.sender == tx.origin) {
            isEOA_ = true;
        } else if (address(msg.sender).code.length == 23) {
            // If the sender is not the origin, check for 7702 delegated EOAs.
            assembly {
                let ptr := mload(0x40)
                mstore(0x40, add(ptr, 0x20))
                extcodecopy(caller(), ptr, 0, 0x20)
                isEOA_ := eq(shr(232, mload(ptr)), 0xEF0100)
            }
        } else {
            // If more or less than 23 bytes of code, not a 7702 delegated EOA.
            isEOA_ = false;
        }
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
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 amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` 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 amount) 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 `amount` 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 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` 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 amount
    ) external returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
/// @title IOptimismMintableERC20
/// @notice This interface is available on the OptimismMintableERC20 contract.
///         We declare it as a separate interface so that it can be used in
///         custom implementations of OptimismMintableERC20.
interface IOptimismMintableERC20 is IERC165 {
    function remoteToken() external view returns (address);
    function bridge() external returns (address);
    function mint(address _to, uint256 _amount) external;
    function burn(address _from, uint256 _amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
/// @custom:legacy
/// @title ILegacyMintableERC20
/// @notice This interface was available on the legacy L2StandardERC20 contract.
///         It remains available on the OptimismMintableERC20 contract for
///         backwards compatibility.
interface ILegacyMintableERC20 is IERC165 {
    function l1Token() external view returns (address);
    function mint(address _to, uint256 _amount) external;
    function burn(address _from, uint256 _amount) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.
        return account.code.length > 0;
    }
    /**
     * @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://diligence.consensys.net/posts/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/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");
        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
    /**
     * @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, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * 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.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }
    /**
     * @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`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }
    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
// 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
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);
    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
// Contracts
import { CrossDomainMessenger } from "src/universal/CrossDomainMessenger.sol";
// Libraries
import { Predeploys } from "src/libraries/Predeploys.sol";
// Interfaces
import { ISemver } from "interfaces/universal/ISemver.sol";
import { ISuperchainConfig } from "interfaces/L1/ISuperchainConfig.sol";
import { IOptimismPortal2 as IOptimismPortal } from "interfaces/L1/IOptimismPortal2.sol";
/// @custom:proxied true
/// @title L1CrossDomainMessenger
/// @notice The L1CrossDomainMessenger is a message passing interface between L1 and L2 responsible
///         for sending and receiving data on the L1 side. Users are encouraged to use this
///         interface instead of interacting with lower-level contracts directly.
contract L1CrossDomainMessenger is CrossDomainMessenger, ISemver {
    /// @notice Contract of the SuperchainConfig.
    ISuperchainConfig public superchainConfig;
    /// @notice Contract of the OptimismPortal.
    /// @custom:network-specific
    IOptimismPortal public portal;
    /// @custom:legacy
    /// @custom:spacer systemConfig
    /// @notice Spacer taking up the legacy `systemConfig` slot.
    address private spacer_253_0_20;
    /// @notice Semantic version.
    /// @custom:semver 2.6.0
    string public constant version = "2.6.0";
    /// @notice Constructs the L1CrossDomainMessenger contract.
    constructor() {
        _disableInitializers();
    }
    /// @notice Initializes the contract.
    /// @param _superchainConfig Contract of the SuperchainConfig contract on this network.
    /// @param _portal Contract of the OptimismPortal contract on this network.
    function initialize(ISuperchainConfig _superchainConfig, IOptimismPortal _portal) external initializer {
        superchainConfig = _superchainConfig;
        portal = _portal;
        __CrossDomainMessenger_init({ _otherMessenger: CrossDomainMessenger(Predeploys.L2_CROSS_DOMAIN_MESSENGER) });
    }
    /// @notice Getter function for the OptimismPortal contract on this chain.
    ///         Public getter is legacy and will be removed in the future. Use `portal()` instead.
    /// @return Contract of the OptimismPortal on this chain.
    /// @custom:legacy
    function PORTAL() external view returns (IOptimismPortal) {
        return portal;
    }
    /// @inheritdoc CrossDomainMessenger
    function _sendMessage(address _to, uint64 _gasLimit, uint256 _value, bytes memory _data) internal override {
        portal.depositTransaction{ value: _value }({
            _to: _to,
            _value: _value,
            _gasLimit: _gasLimit,
            _isCreation: false,
            _data: _data
        });
    }
    /// @inheritdoc CrossDomainMessenger
    function _isOtherMessenger() internal view override returns (bool) {
        return msg.sender == address(portal) && portal.l2Sender() == address(otherMessenger);
    }
    /// @inheritdoc CrossDomainMessenger
    function _isUnsafeTarget(address _target) internal view override returns (bool) {
        return _target == address(this) || _target == address(portal);
    }
    /// @inheritdoc CrossDomainMessenger
    function paused() public view override returns (bool) {
        return superchainConfig.paused();
    }
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
// Libraries
import { Initializable } from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import { Math } from "@openzeppelin/contracts/utils/math/Math.sol";
import { SafeCall } from "src/libraries/SafeCall.sol";
import { Hashing } from "src/libraries/Hashing.sol";
import { Encoding } from "src/libraries/Encoding.sol";
import { Constants } from "src/libraries/Constants.sol";
/// @custom:legacy
/// @title CrossDomainMessengerLegacySpacer0
/// @notice Contract only exists to add a spacer to the CrossDomainMessenger where the
///         libAddressManager variable used to exist. Must be the first contract in the inheritance
///         tree of the CrossDomainMessenger.
contract CrossDomainMessengerLegacySpacer0 {
    /// @custom:legacy
    /// @custom:spacer libAddressManager
    /// @notice Spacer for backwards compatibility.
    address private spacer_0_0_20;
}
/// @custom:legacy
/// @title CrossDomainMessengerLegacySpacer1
/// @notice Contract only exists to add a spacer to the CrossDomainMessenger where the
///         PausableUpgradable and OwnableUpgradeable variables used to exist. Must be
///         the third contract in the inheritance tree of the CrossDomainMessenger.
contract CrossDomainMessengerLegacySpacer1 {
    /// @custom:legacy
    /// @custom:spacer ContextUpgradable's __gap
    /// @notice Spacer for backwards compatibility. Comes from OpenZeppelin
    ///         ContextUpgradable.
    uint256[50] private spacer_1_0_1600;
    /// @custom:legacy
    /// @custom:spacer OwnableUpgradeable's _owner
    /// @notice Spacer for backwards compatibility.
    ///         Come from OpenZeppelin OwnableUpgradeable.
    address private spacer_51_0_20;
    /// @custom:legacy
    /// @custom:spacer OwnableUpgradeable's __gap
    /// @notice Spacer for backwards compatibility. Comes from OpenZeppelin
    ///         OwnableUpgradeable.
    uint256[49] private spacer_52_0_1568;
    /// @custom:legacy
    /// @custom:spacer PausableUpgradable's _paused
    /// @notice Spacer for backwards compatibility. Comes from OpenZeppelin
    ///         PausableUpgradable.
    bool private spacer_101_0_1;
    /// @custom:legacy
    /// @custom:spacer PausableUpgradable's __gap
    /// @notice Spacer for backwards compatibility. Comes from OpenZeppelin
    ///         PausableUpgradable.
    uint256[49] private spacer_102_0_1568;
    /// @custom:legacy
    /// @custom:spacer ReentrancyGuardUpgradeable's `_status` field.
    /// @notice Spacer for backwards compatibility.
    uint256 private spacer_151_0_32;
    /// @custom:legacy
    /// @custom:spacer ReentrancyGuardUpgradeable's __gap
    /// @notice Spacer for backwards compatibility.
    uint256[49] private spacer_152_0_1568;
    /// @custom:legacy
    /// @custom:spacer blockedMessages
    /// @notice Spacer for backwards compatibility.
    mapping(bytes32 => bool) private spacer_201_0_32;
    /// @custom:legacy
    /// @custom:spacer relayedMessages
    /// @notice Spacer for backwards compatibility.
    mapping(bytes32 => bool) private spacer_202_0_32;
}
/// @custom:upgradeable
/// @title CrossDomainMessenger
/// @notice CrossDomainMessenger is a base contract that provides the core logic for the L1 and L2
///         cross-chain messenger contracts. It's designed to be a universal interface that only
///         needs to be extended slightly to provide low-level message passing functionality on each
///         chain it's deployed on. Currently only designed for message passing between two paired
///         chains and does not support one-to-many interactions.
///         Any changes to this contract MUST result in a semver bump for contracts that inherit it.
abstract contract CrossDomainMessenger is
    CrossDomainMessengerLegacySpacer0,
    Initializable,
    CrossDomainMessengerLegacySpacer1
{
    /// @notice Current message version identifier.
    uint16 public constant MESSAGE_VERSION = 1;
    /// @notice Constant overhead added to the base gas for a message.
    uint64 public constant RELAY_CONSTANT_OVERHEAD = 200_000;
    /// @notice Numerator for dynamic overhead added to the base gas for a message.
    uint64 public constant MIN_GAS_DYNAMIC_OVERHEAD_NUMERATOR = 64;
    /// @notice Denominator for dynamic overhead added to the base gas for a message.
    uint64 public constant MIN_GAS_DYNAMIC_OVERHEAD_DENOMINATOR = 63;
    /// @notice Extra gas added to base gas for each byte of calldata in a message.
    uint64 public constant MIN_GAS_CALLDATA_OVERHEAD = 16;
    /// @notice Gas reserved for performing the external call in `relayMessage`.
    uint64 public constant RELAY_CALL_OVERHEAD = 40_000;
    /// @notice Gas reserved for finalizing the execution of `relayMessage` after the safe call.
    uint64 public constant RELAY_RESERVED_GAS = 40_000;
    /// @notice Gas reserved for the execution between the `hasMinGas` check and the external
    ///         call in `relayMessage`.
    uint64 public constant RELAY_GAS_CHECK_BUFFER = 5_000;
    /// @notice Base gas required for any transaction in the EVM.
    uint64 public constant TX_BASE_GAS = 21_000;
    /// @notice Floor overhead per byte of non-zero calldata in a message. Calldata floor was
    ///         introduced in EIP-7623.
    uint64 public constant FLOOR_CALLDATA_OVERHEAD = 40;
    /// @notice Overhead added to the internal message data when the full call to relayMessage is
    ///         ABI encoded. This is a constant value that is specific to the V1 message encoding
    ///         scheme. 260 is an upper bound, actual overhead can be as low as 228 bytes for an
    ///         empty message.
    uint64 public constant ENCODING_OVERHEAD = 260;
    /// @notice Mapping of message hashes to boolean receipt values. Note that a message will only
    ///         be present in this mapping if it has successfully been relayed on this chain, and
    ///         can therefore not be relayed again.
    mapping(bytes32 => bool) public successfulMessages;
    /// @notice Address of the sender of the currently executing message on the other chain. If the
    ///         value of this variable is the default value (0x00000000...dead) then no message is
    ///         currently being executed. Use the xDomainMessageSender getter which will throw an
    ///         error if this is the case.
    address internal xDomainMsgSender;
    /// @notice Nonce for the next message to be sent, without the message version applied. Use the
    ///         messageNonce getter which will insert the message version into the nonce to give you
    ///         the actual nonce to be used for the message.
    uint240 internal msgNonce;
    /// @notice Mapping of message hashes to a boolean if and only if the message has failed to be
    ///         executed at least once. A message will not be present in this mapping if it
    ///         successfully executed on the first attempt.
    mapping(bytes32 => bool) public failedMessages;
    /// @notice CrossDomainMessenger contract on the other chain.
    /// @custom:network-specific
    CrossDomainMessenger public otherMessenger;
    /// @notice Reserve extra slots in the storage layout for future upgrades.
    ///         A gap size of 43 was chosen here, so that the first slot used in a child contract
    ///         would be 1 plus a multiple of 50.
    uint256[43] private __gap;
    /// @notice Emitted whenever a message is sent to the other chain.
    /// @param target       Address of the recipient of the message.
    /// @param sender       Address of the sender of the message.
    /// @param message      Message to trigger the recipient address with.
    /// @param messageNonce Unique nonce attached to the message.
    /// @param gasLimit     Minimum gas limit that the message can be executed with.
    event SentMessage(address indexed target, address sender, bytes message, uint256 messageNonce, uint256 gasLimit);
    /// @notice Additional event data to emit, required as of Bedrock. Cannot be merged with the
    ///         SentMessage event without breaking the ABI of this contract, this is good enough.
    /// @param sender Address of the sender of the message.
    /// @param value  ETH value sent along with the message to the recipient.
    event SentMessageExtension1(address indexed sender, uint256 value);
    /// @notice Emitted whenever a message is successfully relayed on this chain.
    /// @param msgHash Hash of the message that was relayed.
    event RelayedMessage(bytes32 indexed msgHash);
    /// @notice Emitted whenever a message fails to be relayed on this chain.
    /// @param msgHash Hash of the message that failed to be relayed.
    event FailedRelayedMessage(bytes32 indexed msgHash);
    /// @notice Sends a message to some target address on the other chain. Note that if the call
    ///         always reverts, then the message will be unrelayable, and any ETH sent will be
    ///         permanently locked. The same will occur if the target on the other chain is
    ///         considered unsafe (see the _isUnsafeTarget() function).
    /// @param _target      Target contract or wallet address.
    /// @param _message     Message to trigger the target address with.
    /// @param _minGasLimit Minimum gas limit that the message can be executed with.
    function sendMessage(address _target, bytes calldata _message, uint32 _minGasLimit) external payable {
        // Triggers a message to the other messenger. Note that the amount of gas provided to the
        // message is the amount of gas requested by the user PLUS the base gas value. We want to
        // guarantee the property that the call to the target contract will always have at least
        // the minimum gas limit specified by the user.
        _sendMessage({
            _to: address(otherMessenger),
            _gasLimit: baseGas(_message, _minGasLimit),
            _value: msg.value,
            _data: abi.encodeWithSelector(
                this.relayMessage.selector, messageNonce(), msg.sender, _target, msg.value, _minGasLimit, _message
            )
        });
        emit SentMessage(_target, msg.sender, _message, messageNonce(), _minGasLimit);
        emit SentMessageExtension1(msg.sender, msg.value);
        unchecked {
            ++msgNonce;
        }
    }
    /// @notice Relays a message that was sent by the other CrossDomainMessenger contract. Can only
    ///         be executed via cross-chain call from the other messenger OR if the message was
    ///         already received once and is currently being replayed.
    /// @param _nonce       Nonce of the message being relayed.
    /// @param _sender      Address of the user who sent the message.
    /// @param _target      Address that the message is targeted at.
    /// @param _value       ETH value to send with the message.
    /// @param _minGasLimit Minimum amount of gas that the message can be executed with.
    /// @param _message     Message to send to the target.
    function relayMessage(
        uint256 _nonce,
        address _sender,
        address _target,
        uint256 _value,
        uint256 _minGasLimit,
        bytes calldata _message
    )
        external
        payable
    {
        // On L1 this function will check the Portal for its paused status.
        // On L2 this function should be a no-op, because paused will always return false.
        require(paused() == false, "CrossDomainMessenger: paused");
        (, uint16 version) = Encoding.decodeVersionedNonce(_nonce);
        require(version < 2, "CrossDomainMessenger: only version 0 or 1 messages are supported at this time");
        // If the message is version 0, then it's a migrated legacy withdrawal. We therefore need
        // to check that the legacy version of the message has not already been relayed.
        if (version == 0) {
            bytes32 oldHash = Hashing.hashCrossDomainMessageV0(_target, _sender, _message, _nonce);
            require(successfulMessages[oldHash] == false, "CrossDomainMessenger: legacy withdrawal already relayed");
        }
        // We use the v1 message hash as the unique identifier for the message because it commits
        // to the value and minimum gas limit of the message.
        bytes32 versionedHash =
            Hashing.hashCrossDomainMessageV1(_nonce, _sender, _target, _value, _minGasLimit, _message);
        if (_isOtherMessenger()) {
            // These properties should always hold when the message is first submitted (as
            // opposed to being replayed).
            assert(msg.value == _value);
            assert(!failedMessages[versionedHash]);
        } else {
            require(msg.value == 0, "CrossDomainMessenger: value must be zero unless message is from a system address");
            require(failedMessages[versionedHash], "CrossDomainMessenger: message cannot be replayed");
        }
        require(
            _isUnsafeTarget(_target) == false, "CrossDomainMessenger: cannot send message to blocked system address"
        );
        require(successfulMessages[versionedHash] == false, "CrossDomainMessenger: message has already been relayed");
        // If there is not enough gas left to perform the external call and finish the execution,
        // return early and assign the message to the failedMessages mapping.
        // We are asserting that we have enough gas to:
        // 1. Call the target contract (_minGasLimit + RELAY_CALL_OVERHEAD + RELAY_GAS_CHECK_BUFFER)
        //   1.a. The RELAY_CALL_OVERHEAD is included in `hasMinGas`.
        // 2. Finish the execution after the external call (RELAY_RESERVED_GAS).
        //
        // If `xDomainMsgSender` is not the default L2 sender, this function
        // is being re-entered. This marks the message as failed to allow it to be replayed.
        if (
            !SafeCall.hasMinGas(_minGasLimit, RELAY_RESERVED_GAS + RELAY_GAS_CHECK_BUFFER)
                || xDomainMsgSender != Constants.DEFAULT_L2_SENDER
        ) {
            failedMessages[versionedHash] = true;
            emit FailedRelayedMessage(versionedHash);
            // Revert in this case if the transaction was triggered by the estimation address. This
            // should only be possible during gas estimation or we have bigger problems. Reverting
            // here will make the behavior of gas estimation change such that the gas limit
            // computed will be the amount required to relay the message, even if that amount is
            // greater than the minimum gas limit specified by the user.
            if (tx.origin == Constants.ESTIMATION_ADDRESS) {
                revert("CrossDomainMessenger: failed to relay message");
            }
            return;
        }
        xDomainMsgSender = _sender;
        bool success = SafeCall.call(_target, gasleft() - RELAY_RESERVED_GAS, _value, _message);
        xDomainMsgSender = Constants.DEFAULT_L2_SENDER;
        if (success) {
            // This check is identical to one above, but it ensures that the same message cannot be relayed
            // twice, and adds a layer of protection against rentrancy.
            assert(successfulMessages[versionedHash] == false);
            successfulMessages[versionedHash] = true;
            emit RelayedMessage(versionedHash);
        } else {
            failedMessages[versionedHash] = true;
            emit FailedRelayedMessage(versionedHash);
            // Revert in this case if the transaction was triggered by the estimation address. This
            // should only be possible during gas estimation or we have bigger problems. Reverting
            // here will make the behavior of gas estimation change such that the gas limit
            // computed will be the amount required to relay the message, even if that amount is
            // greater than the minimum gas limit specified by the user.
            if (tx.origin == Constants.ESTIMATION_ADDRESS) {
                revert("CrossDomainMessenger: failed to relay message");
            }
        }
    }
    /// @notice Retrieves the address of the contract or wallet that initiated the currently
    ///         executing message on the other chain. Will throw an error if there is no message
    ///         currently being executed. Allows the recipient of a call to see who triggered it.
    /// @return Address of the sender of the currently executing message on the other chain.
    function xDomainMessageSender() external view returns (address) {
        require(
            xDomainMsgSender != Constants.DEFAULT_L2_SENDER, "CrossDomainMessenger: xDomainMessageSender is not set"
        );
        return xDomainMsgSender;
    }
    /// @notice Retrieves the address of the paired CrossDomainMessenger contract on the other chain
    ///         Public getter is legacy and will be removed in the future. Use `otherMessenger()` instead.
    /// @return CrossDomainMessenger contract on the other chain.
    /// @custom:legacy
    function OTHER_MESSENGER() public view returns (CrossDomainMessenger) {
        return otherMessenger;
    }
    /// @notice Retrieves the next message nonce. Message version will be added to the upper two
    ///         bytes of the message nonce. Message version allows us to treat messages as having
    ///         different structures.
    /// @return Nonce of the next message to be sent, with added message version.
    function messageNonce() public view returns (uint256) {
        return Encoding.encodeVersionedNonce(msgNonce, MESSAGE_VERSION);
    }
    /// @notice Computes the amount of gas required to guarantee that a given message will be
    ///         received on the other chain without running out of gas. Guaranteeing that a message
    ///         will not run out of gas is important because this ensures that a message can always
    ///         be replayed on the other chain if it fails to execute completely.
    /// @param _message     Message to compute the amount of required gas for.
    /// @param _minGasLimit Minimum desired gas limit when message goes to target.
    /// @return Amount of gas required to guarantee message receipt.
    function baseGas(bytes memory _message, uint32 _minGasLimit) public pure returns (uint64) {
        // Base gas should really be computed on the fully encoded message but that would break the
        // expected API, so we instead just add the encoding overhead to the message length inside
        // of this function.
        // We need a minimum amount of execution gas to ensure that the message will be received on
        // the other side without running out of gas (stored within the failedMessages mapping).
        // If we get beyond the hasMinGas check, then we *must* supply more than minGasLimit to
        // the external call.
        uint64 executionGas = uint64(
            // Constant costs for relayMessage
            RELAY_CONSTANT_OVERHEAD
            // Covers dynamic parts of the CALL opcode
            + RELAY_CALL_OVERHEAD
            // Ensures execution of relayMessage completes after call
            + RELAY_RESERVED_GAS
            // Buffer between hasMinGas check and the CALL
            + RELAY_GAS_CHECK_BUFFER
            // Minimum gas limit, multiplied by 64/63 to account for EIP-150.
            + ((_minGasLimit * MIN_GAS_DYNAMIC_OVERHEAD_NUMERATOR) / MIN_GAS_DYNAMIC_OVERHEAD_DENOMINATOR)
        );
        // Total message size is the result of properly ABI encoding the call to relayMessage.
        // Since we only get the message data and not the rest of the calldata, we use the
        // ENCODING_OVERHEAD constant to conservatively account for the remaining bytes.
        uint64 totalMessageSize = uint64(_message.length + ENCODING_OVERHEAD);
        // Finally, replicate the transaction cost formula as defined after EIP-7623. This is
        // mostly relevant in the L1 -> L2 case because we need to be able to cover the intrinsic
        // cost of the message but it doesn't hurt in the L2 -> L1 case. After EIP-7623, the cost
        // of a transaction is floored by its calldata size. We don't need to account for the
        // contract creation case because this is always a call to relayMessage.
        return TX_BASE_GAS
            + uint64(
                Math.max(
                    executionGas + (totalMessageSize * MIN_GAS_CALLDATA_OVERHEAD),
                    (totalMessageSize * FLOOR_CALLDATA_OVERHEAD)
                )
            );
    }
    /// @notice Initializer.
    /// @param _otherMessenger CrossDomainMessenger contract on the other chain.
    function __CrossDomainMessenger_init(CrossDomainMessenger _otherMessenger) internal onlyInitializing {
        // We only want to set the xDomainMsgSender to the default value if it hasn't been initialized yet,
        // meaning that this is a fresh contract deployment.
        // This prevents resetting the xDomainMsgSender to the default value during an upgrade, which would enable
        // a reentrant withdrawal to sandwhich the upgrade replay a withdrawal twice.
        if (xDomainMsgSender == address(0)) {
            xDomainMsgSender = Constants.DEFAULT_L2_SENDER;
        }
        otherMessenger = _otherMessenger;
    }
    /// @notice Sends a low-level message to the other messenger. Needs to be implemented by child
    ///         contracts because the logic for this depends on the network where the messenger is
    ///         being deployed.
    /// @param _to       Recipient of the message on the other chain.
    /// @param _gasLimit Minimum gas limit the message can be executed with.
    /// @param _value    Amount of ETH to send with the message.
    /// @param _data     Message data.
    function _sendMessage(address _to, uint64 _gasLimit, uint256 _value, bytes memory _data) internal virtual;
    /// @notice Checks whether the message is coming from the other messenger. Implemented by child
    ///         contracts because the logic for this depends on the network where the messenger is
    ///         being deployed.
    /// @return Whether the message is coming from the other messenger.
    function _isOtherMessenger() internal view virtual returns (bool);
    /// @notice Checks whether a given call target is a system address that could cause the
    ///         messenger to peform an unsafe action. This is NOT a mechanism for blocking user
    ///         addresses. This is ONLY used to prevent the execution of messages to specific
    ///         system addresses that could cause security issues, e.g., having the
    ///         CrossDomainMessenger send messages to itself.
    /// @param _target Address of the contract to check.
    /// @return Whether or not the address is an unsafe system address.
    function _isUnsafeTarget(address _target) internal view virtual returns (bool);
    /// @notice This function should return true if the contract is paused.
    ///         On L1 this function will check the SuperchainConfig for its paused status.
    ///         On L2 this function should be a no-op.
    /// @return Whether or not the contract is paused.
    function paused() public view virtual returns (bool) {
        return false;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title Predeploys
/// @notice Contains constant addresses for protocol contracts that are pre-deployed to the L2 system.
//          This excludes the preinstalls (non-protocol contracts).
library Predeploys {
    /// @notice Number of predeploy-namespace addresses reserved for protocol usage.
    uint256 internal constant PREDEPLOY_COUNT = 2048;
    /// @custom:legacy
    /// @notice Address of the LegacyMessagePasser predeploy. Deprecate. Use the updated
    ///         L2ToL1MessagePasser contract instead.
    address internal constant LEGACY_MESSAGE_PASSER = 0x4200000000000000000000000000000000000000;
    /// @custom:legacy
    /// @notice Address of the L1MessageSender predeploy. Deprecated. Use L2CrossDomainMessenger
    ///         or access tx.origin (or msg.sender) in a L1 to L2 transaction instead.
    ///         Not embedded into new OP-Stack chains.
    address internal constant L1_MESSAGE_SENDER = 0x4200000000000000000000000000000000000001;
    /// @custom:legacy
    /// @notice Address of the DeployerWhitelist predeploy. No longer active.
    address internal constant DEPLOYER_WHITELIST = 0x4200000000000000000000000000000000000002;
    /// @notice Address of the canonical WETH contract.
    address internal constant WETH = 0x4200000000000000000000000000000000000006;
    /// @notice Address of the L2CrossDomainMessenger predeploy.
    address internal constant L2_CROSS_DOMAIN_MESSENGER = 0x4200000000000000000000000000000000000007;
    /// @notice Address of the GasPriceOracle predeploy. Includes fee information
    ///         and helpers for computing the L1 portion of the transaction fee.
    address internal constant GAS_PRICE_ORACLE = 0x420000000000000000000000000000000000000F;
    /// @notice Address of the L2StandardBridge predeploy.
    address internal constant L2_STANDARD_BRIDGE = 0x4200000000000000000000000000000000000010;
    //// @notice Address of the SequencerFeeWallet predeploy.
    address internal constant SEQUENCER_FEE_WALLET = 0x4200000000000000000000000000000000000011;
    /// @notice Address of the OptimismMintableERC20Factory predeploy.
    address internal constant OPTIMISM_MINTABLE_ERC20_FACTORY = 0x4200000000000000000000000000000000000012;
    /// @custom:legacy
    /// @notice Address of the L1BlockNumber predeploy. Deprecated. Use the L1Block predeploy
    ///         instead, which exposes more information about the L1 state.
    address internal constant L1_BLOCK_NUMBER = 0x4200000000000000000000000000000000000013;
    /// @notice Address of the L2ERC721Bridge predeploy.
    address internal constant L2_ERC721_BRIDGE = 0x4200000000000000000000000000000000000014;
    /// @notice Address of the L1Block predeploy.
    address internal constant L1_BLOCK_ATTRIBUTES = 0x4200000000000000000000000000000000000015;
    /// @notice Address of the L2ToL1MessagePasser predeploy.
    address internal constant L2_TO_L1_MESSAGE_PASSER = 0x4200000000000000000000000000000000000016;
    /// @notice Address of the OptimismMintableERC721Factory predeploy.
    address internal constant OPTIMISM_MINTABLE_ERC721_FACTORY = 0x4200000000000000000000000000000000000017;
    /// @notice Address of the ProxyAdmin predeploy.
    address internal constant PROXY_ADMIN = 0x4200000000000000000000000000000000000018;
    /// @notice Address of the BaseFeeVault predeploy.
    address internal constant BASE_FEE_VAULT = 0x4200000000000000000000000000000000000019;
    /// @notice Address of the L1FeeVault predeploy.
    address internal constant L1_FEE_VAULT = 0x420000000000000000000000000000000000001A;
    /// @notice Address of the OperatorFeeVault predeploy.
    address internal constant OPERATOR_FEE_VAULT = 0x420000000000000000000000000000000000001b;
    /// @notice Address of the SchemaRegistry predeploy.
    address internal constant SCHEMA_REGISTRY = 0x4200000000000000000000000000000000000020;
    /// @notice Address of the EAS predeploy.
    address internal constant EAS = 0x4200000000000000000000000000000000000021;
    /// @notice Address of the GovernanceToken predeploy.
    address internal constant GOVERNANCE_TOKEN = 0x4200000000000000000000000000000000000042;
    /// @custom:legacy
    /// @notice Address of the LegacyERC20ETH predeploy. Deprecated. Balances are migrated to the
    ///         state trie as of the Bedrock upgrade. Contract has been locked and write functions
    ///         can no longer be accessed.
    address internal constant LEGACY_ERC20_ETH = 0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000;
    /// @notice Address of the CrossL2Inbox predeploy.
    address internal constant CROSS_L2_INBOX = 0x4200000000000000000000000000000000000022;
    /// @notice Address of the L2ToL2CrossDomainMessenger predeploy.
    address internal constant L2_TO_L2_CROSS_DOMAIN_MESSENGER = 0x4200000000000000000000000000000000000023;
    /// @notice Address of the SuperchainWETH predeploy.
    address internal constant SUPERCHAIN_WETH = 0x4200000000000000000000000000000000000024;
    /// @notice Address of the ETHLiquidity predeploy.
    address internal constant ETH_LIQUIDITY = 0x4200000000000000000000000000000000000025;
    /// @notice Address of the OptimismSuperchainERC20Factory predeploy.
    address internal constant OPTIMISM_SUPERCHAIN_ERC20_FACTORY = 0x4200000000000000000000000000000000000026;
    /// @notice Address of the OptimismSuperchainERC20Beacon predeploy.
    address internal constant OPTIMISM_SUPERCHAIN_ERC20_BEACON = 0x4200000000000000000000000000000000000027;
    // TODO: Precalculate the address of the implementation contract
    /// @notice Arbitrary address of the OptimismSuperchainERC20 implementation contract.
    address internal constant OPTIMISM_SUPERCHAIN_ERC20 = 0xB9415c6cA93bdC545D4c5177512FCC22EFa38F28;
    /// @notice Address of the SuperchainTokenBridge predeploy.
    address internal constant SUPERCHAIN_TOKEN_BRIDGE = 0x4200000000000000000000000000000000000028;
    /// @notice Returns the name of the predeploy at the given address.
    function getName(address _addr) internal pure returns (string memory out_) {
        require(isPredeployNamespace(_addr), "Predeploys: address must be a predeploy");
        if (_addr == LEGACY_MESSAGE_PASSER) return "LegacyMessagePasser";
        if (_addr == L1_MESSAGE_SENDER) return "L1MessageSender";
        if (_addr == DEPLOYER_WHITELIST) return "DeployerWhitelist";
        if (_addr == WETH) return "WETH";
        if (_addr == L2_CROSS_DOMAIN_MESSENGER) return "L2CrossDomainMessenger";
        if (_addr == GAS_PRICE_ORACLE) return "GasPriceOracle";
        if (_addr == L2_STANDARD_BRIDGE) return "L2StandardBridge";
        if (_addr == SEQUENCER_FEE_WALLET) return "SequencerFeeVault";
        if (_addr == OPTIMISM_MINTABLE_ERC20_FACTORY) return "OptimismMintableERC20Factory";
        if (_addr == L1_BLOCK_NUMBER) return "L1BlockNumber";
        if (_addr == L2_ERC721_BRIDGE) return "L2ERC721Bridge";
        if (_addr == L1_BLOCK_ATTRIBUTES) return "L1Block";
        if (_addr == L2_TO_L1_MESSAGE_PASSER) return "L2ToL1MessagePasser";
        if (_addr == OPTIMISM_MINTABLE_ERC721_FACTORY) return "OptimismMintableERC721Factory";
        if (_addr == PROXY_ADMIN) return "ProxyAdmin";
        if (_addr == BASE_FEE_VAULT) return "BaseFeeVault";
        if (_addr == L1_FEE_VAULT) return "L1FeeVault";
        if (_addr == OPERATOR_FEE_VAULT) return "OperatorFeeVault";
        if (_addr == SCHEMA_REGISTRY) return "SchemaRegistry";
        if (_addr == EAS) return "EAS";
        if (_addr == GOVERNANCE_TOKEN) return "GovernanceToken";
        if (_addr == LEGACY_ERC20_ETH) return "LegacyERC20ETH";
        if (_addr == CROSS_L2_INBOX) return "CrossL2Inbox";
        if (_addr == L2_TO_L2_CROSS_DOMAIN_MESSENGER) return "L2ToL2CrossDomainMessenger";
        if (_addr == SUPERCHAIN_WETH) return "SuperchainWETH";
        if (_addr == ETH_LIQUIDITY) return "ETHLiquidity";
        if (_addr == OPTIMISM_SUPERCHAIN_ERC20_FACTORY) return "OptimismSuperchainERC20Factory";
        if (_addr == OPTIMISM_SUPERCHAIN_ERC20_BEACON) return "OptimismSuperchainERC20Beacon";
        if (_addr == SUPERCHAIN_TOKEN_BRIDGE) return "SuperchainTokenBridge";
        revert("Predeploys: unnamed predeploy");
    }
    /// @notice Returns true if the predeploy is not proxied.
    function notProxied(address _addr) internal pure returns (bool) {
        return _addr == GOVERNANCE_TOKEN || _addr == WETH;
    }
    /// @notice Returns true if the address is a defined predeploy that is embedded into new OP-Stack chains.
    function isSupportedPredeploy(address _addr, bool _useInterop) internal pure returns (bool) {
        return _addr == LEGACY_MESSAGE_PASSER || _addr == DEPLOYER_WHITELIST || _addr == WETH
            || _addr == L2_CROSS_DOMAIN_MESSENGER || _addr == GAS_PRICE_ORACLE || _addr == L2_STANDARD_BRIDGE
            || _addr == SEQUENCER_FEE_WALLET || _addr == OPTIMISM_MINTABLE_ERC20_FACTORY || _addr == L1_BLOCK_NUMBER
            || _addr == L2_ERC721_BRIDGE || _addr == L1_BLOCK_ATTRIBUTES || _addr == L2_TO_L1_MESSAGE_PASSER
            || _addr == OPTIMISM_MINTABLE_ERC721_FACTORY || _addr == PROXY_ADMIN || _addr == BASE_FEE_VAULT
            || _addr == L1_FEE_VAULT || _addr == OPERATOR_FEE_VAULT || _addr == SCHEMA_REGISTRY || _addr == EAS
            || _addr == GOVERNANCE_TOKEN || (_useInterop && _addr == CROSS_L2_INBOX)
            || (_useInterop && _addr == L2_TO_L2_CROSS_DOMAIN_MESSENGER) || (_useInterop && _addr == SUPERCHAIN_WETH)
            || (_useInterop && _addr == ETH_LIQUIDITY) || (_useInterop && _addr == SUPERCHAIN_TOKEN_BRIDGE);
    }
    function isPredeployNamespace(address _addr) internal pure returns (bool) {
        return uint160(_addr) >> 11 == uint160(0x4200000000000000000000000000000000000000) >> 11;
    }
    /// @notice Function to compute the expected address of the predeploy implementation
    ///         in the genesis state.
    function predeployToCodeNamespace(address _addr) internal pure returns (address) {
        require(
            isPredeployNamespace(_addr), "Predeploys: can only derive code-namespace address for predeploy addresses"
        );
        return address(
            uint160(uint256(uint160(_addr)) & 0xffff | uint256(uint160(0xc0D3C0d3C0d3C0D3c0d3C0d3c0D3C0d3c0d30000)))
        );
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title ISemver
/// @notice ISemver is a simple contract for ensuring that contracts are
///         versioned using semantic versioning.
interface ISemver {
    /// @notice Getter for the semantic version of the contract. This is not
    ///         meant to be used onchain but instead meant to be used by offchain
    ///         tooling.
    /// @return Semver contract version as a string.
    function version() external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface ISuperchainConfig {
    enum UpdateType {
        GUARDIAN
    }
    event ConfigUpdate(UpdateType indexed updateType, bytes data);
    event Initialized(uint8 version);
    event Paused(string identifier);
    event Unpaused();
    function GUARDIAN_SLOT() external view returns (bytes32);
    function PAUSED_SLOT() external view returns (bytes32);
    function guardian() external view returns (address guardian_);
    function initialize(address _guardian, bool _paused) external;
    function pause(string memory _identifier) external;
    function paused() external view returns (bool paused_);
    function unpause() external;
    function version() external view returns (string memory);
    function __constructor__() external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { Types } from "src/libraries/Types.sol";
import { GameType, Timestamp } from "src/dispute/lib/LibUDT.sol";
import { IDisputeGame } from "interfaces/dispute/IDisputeGame.sol";
import { IDisputeGameFactory } from "interfaces/dispute/IDisputeGameFactory.sol";
import { ISystemConfig } from "interfaces/L1/ISystemConfig.sol";
import { ISuperchainConfig } from "interfaces/L1/ISuperchainConfig.sol";
interface IOptimismPortal2 {
    error AlreadyFinalized();
    error BadTarget();
    error Blacklisted();
    error CallPaused();
    error ContentLengthMismatch();
    error EmptyItem();
    error GasEstimation();
    error InvalidDataRemainder();
    error InvalidDisputeGame();
    error InvalidGameType();
    error InvalidHeader();
    error InvalidMerkleProof();
    error InvalidProof();
    error LargeCalldata();
    error NonReentrant();
    error OutOfGas();
    error ProposalNotValidated();
    error SmallGasLimit();
    error Unauthorized();
    error UnexpectedList();
    error UnexpectedString();
    error Unproven();
    error LegacyGame();
    event DisputeGameBlacklisted(IDisputeGame indexed disputeGame);
    event Initialized(uint8 version);
    event RespectedGameTypeSet(GameType indexed newGameType, Timestamp indexed updatedAt);
    event TransactionDeposited(address indexed from, address indexed to, uint256 indexed version, bytes opaqueData);
    event WithdrawalFinalized(bytes32 indexed withdrawalHash, bool success);
    event WithdrawalProven(bytes32 indexed withdrawalHash, address indexed from, address indexed to);
    event WithdrawalProvenExtension1(bytes32 indexed withdrawalHash, address indexed proofSubmitter);
    receive() external payable;
    function blacklistDisputeGame(IDisputeGame _disputeGame) external;
    function checkWithdrawal(bytes32 _withdrawalHash, address _proofSubmitter) external view;
    function depositTransaction(
        address _to,
        uint256 _value,
        uint64 _gasLimit,
        bool _isCreation,
        bytes memory _data
    )
        external
        payable;
    function disputeGameBlacklist(IDisputeGame) external view returns (bool);
    function disputeGameFactory() external view returns (IDisputeGameFactory);
    function disputeGameFinalityDelaySeconds() external view returns (uint256);
    function donateETH() external payable;
    function finalizeWithdrawalTransaction(Types.WithdrawalTransaction memory _tx) external;
    function finalizeWithdrawalTransactionExternalProof(
        Types.WithdrawalTransaction memory _tx,
        address _proofSubmitter
    )
        external;
    function finalizedWithdrawals(bytes32) external view returns (bool);
    function guardian() external view returns (address);
    function initialize(
        IDisputeGameFactory _disputeGameFactory,
        ISystemConfig _systemConfig,
        ISuperchainConfig _superchainConfig,
        GameType _initialRespectedGameType
    )
        external;
    function l2Sender() external view returns (address);
    function minimumGasLimit(uint64 _byteCount) external pure returns (uint64);
    function numProofSubmitters(bytes32 _withdrawalHash) external view returns (uint256);
    function params() external view returns (uint128 prevBaseFee, uint64 prevBoughtGas, uint64 prevBlockNum); // nosemgrep
    function paused() external view returns (bool);
    function proofMaturityDelaySeconds() external view returns (uint256);
    function proofSubmitters(bytes32, uint256) external view returns (address);
    function proveWithdrawalTransaction(
        Types.WithdrawalTransaction memory _tx,
        uint256 _disputeGameIndex,
        Types.OutputRootProof memory _outputRootProof,
        bytes[] memory _withdrawalProof
    )
        external;
    function provenWithdrawals(
        bytes32,
        address
    )
        external
        view
        returns (IDisputeGame disputeGameProxy, uint64 timestamp); // nosemgrep
    function respectedGameType() external view returns (GameType);
    function respectedGameTypeUpdatedAt() external view returns (uint64);
    function setRespectedGameType(GameType _gameType) external;
    function superchainConfig() external view returns (ISuperchainConfig);
    function systemConfig() external view returns (ISystemConfig);
    function version() external pure returns (string memory);
    function __constructor__(uint256 _proofMaturityDelaySeconds, uint256 _disputeGameFinalityDelaySeconds) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;
    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;
    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);
    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }
    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
     * initialization step. This is essential to configure modules that are added through upgrades and that require
     * initialization.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }
    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }
    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }
    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }
    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }
    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }
    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }
            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                return prod0 / denominator;
            }
            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);
            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////
            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)
                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }
            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.
            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)
                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)
                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }
            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;
            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;
            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256
            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }
    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator,
        Rounding rounding
    ) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }
    /**
     * @dev Returns the square root of a number. It the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`.
        // We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`.
        // This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`.
        // Using an algorithm similar to the msb conmputation, we are able to compute `result = 2**(k/2)` which is a
        // good first aproximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1;
        uint256 x = a;
        if (x >> 128 > 0) {
            x >>= 128;
            result <<= 64;
        }
        if (x >> 64 > 0) {
            x >>= 64;
            result <<= 32;
        }
        if (x >> 32 > 0) {
            x >>= 32;
            result <<= 16;
        }
        if (x >> 16 > 0) {
            x >>= 16;
            result <<= 8;
        }
        if (x >> 8 > 0) {
            x >>= 8;
            result <<= 4;
        }
        if (x >> 4 > 0) {
            x >>= 4;
            result <<= 2;
        }
        if (x >> 2 > 0) {
            result <<= 1;
        }
        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }
    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        uint256 result = sqrt(a);
        if (rounding == Rounding.Up && result * result < a) {
            result += 1;
        }
        return result;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title SafeCall
/// @notice Perform low level safe calls
library SafeCall {
    /// @notice Performs a low level call without copying any returndata.
    /// @dev Passes no calldata to the call context.
    /// @param _target   Address to call
    /// @param _gas      Amount of gas to pass to the call
    /// @param _value    Amount of value to pass to the call
    function send(address _target, uint256 _gas, uint256 _value) internal returns (bool success_) {
        assembly {
            success_ :=
                call(
                    _gas, // gas
                    _target, // recipient
                    _value, // ether value
                    0, // inloc
                    0, // inlen
                    0, // outloc
                    0 // outlen
                )
        }
    }
    /// @notice Perform a low level call with all gas without copying any returndata
    /// @param _target   Address to call
    /// @param _value    Amount of value to pass to the call
    function send(address _target, uint256 _value) internal returns (bool success_) {
        success_ = send(_target, gasleft(), _value);
    }
    /// @notice Perform a low level call without copying any returndata
    /// @param _target   Address to call
    /// @param _gas      Amount of gas to pass to the call
    /// @param _value    Amount of value to pass to the call
    /// @param _calldata Calldata to pass to the call
    function call(
        address _target,
        uint256 _gas,
        uint256 _value,
        bytes memory _calldata
    )
        internal
        returns (bool success_)
    {
        assembly {
            success_ :=
                call(
                    _gas, // gas
                    _target, // recipient
                    _value, // ether value
                    add(_calldata, 32), // inloc
                    mload(_calldata), // inlen
                    0, // outloc
                    0 // outlen
                )
        }
    }
    /// @notice Perform a low level call without copying any returndata
    /// @param _target   Address to call
    /// @param _value    Amount of value to pass to the call
    /// @param _calldata Calldata to pass to the call
    function call(address _target, uint256 _value, bytes memory _calldata) internal returns (bool success_) {
        success_ = call({ _target: _target, _gas: gasleft(), _value: _value, _calldata: _calldata });
    }
    /// @notice Perform a low level call without copying any returndata
    /// @param _target   Address to call
    /// @param _calldata Calldata to pass to the call
    function call(address _target, bytes memory _calldata) internal returns (bool success_) {
        success_ = call({ _target: _target, _gas: gasleft(), _value: 0, _calldata: _calldata });
    }
    /// @notice Helper function to determine if there is sufficient gas remaining within the context
    ///         to guarantee that the minimum gas requirement for a call will be met as well as
    ///         optionally reserving a specified amount of gas for after the call has concluded.
    /// @param _minGas      The minimum amount of gas that may be passed to the target context.
    /// @param _reservedGas Optional amount of gas to reserve for the caller after the execution
    ///                     of the target context.
    /// @return `true` if there is enough gas remaining to safely supply `_minGas` to the target
    ///         context as well as reserve `_reservedGas` for the caller after the execution of
    ///         the target context.
    /// @dev !!!!! FOOTGUN ALERT !!!!!
    ///      1.) The 40_000 base buffer is to account for the worst case of the dynamic cost of the
    ///          `CALL` opcode's `address_access_cost`, `positive_value_cost`, and
    ///          `value_to_empty_account_cost` factors with an added buffer of 5,700 gas. It is
    ///          still possible to self-rekt by initiating a withdrawal with a minimum gas limit
    ///          that does not account for the `memory_expansion_cost` & `code_execution_cost`
    ///          factors of the dynamic cost of the `CALL` opcode.
    ///      2.) This function should *directly* precede the external call if possible. There is an
    ///          added buffer to account for gas consumed between this check and the call, but it
    ///          is only 5,700 gas.
    ///      3.) Because EIP-150 ensures that a maximum of 63/64ths of the remaining gas in the call
    ///          frame may be passed to a subcontext, we need to ensure that the gas will not be
    ///          truncated.
    ///      4.) Use wisely. This function is not a silver bullet.
    function hasMinGas(uint256 _minGas, uint256 _reservedGas) internal view returns (bool) {
        bool _hasMinGas;
        assembly {
            // Equation: gas × 63 ≥ minGas × 64 + 63(40_000 + reservedGas)
            _hasMinGas := iszero(lt(mul(gas(), 63), add(mul(_minGas, 64), mul(add(40000, _reservedGas), 63))))
        }
        return _hasMinGas;
    }
    /// @notice Perform a low level call without copying any returndata. This function
    ///         will revert if the call cannot be performed with the specified minimum
    ///         gas.
    /// @param _target   Address to call
    /// @param _minGas   The minimum amount of gas that may be passed to the call
    /// @param _value    Amount of value to pass to the call
    /// @param _calldata Calldata to pass to the call
    function callWithMinGas(
        address _target,
        uint256 _minGas,
        uint256 _value,
        bytes memory _calldata
    )
        internal
        returns (bool)
    {
        bool _success;
        bool _hasMinGas = hasMinGas(_minGas, 0);
        assembly {
            // Assertion: gasleft() >= (_minGas * 64) / 63 + 40_000
            if iszero(_hasMinGas) {
                // Store the "Error(string)" selector in scratch space.
                mstore(0, 0x08c379a0)
                // Store the pointer to the string length in scratch space.
                mstore(32, 32)
                // Store the string.
                //
                // SAFETY:
                // - We pad the beginning of the string with two zero bytes as well as the
                // length (24) to ensure that we override the free memory pointer at offset
                // 0x40. This is necessary because the free memory pointer is likely to
                // be greater than 1 byte when this function is called, but it is incredibly
                // unlikely that it will be greater than 3 bytes. As for the data within
                // 0x60, it is ensured that it is 0 due to 0x60 being the zero offset.
                // - It's fine to clobber the free memory pointer, we're reverting.
                mstore(88, 0x0000185361666543616c6c3a204e6f7420656e6f75676820676173)
                // Revert with 'Error("SafeCall: Not enough gas")'
                revert(28, 100)
            }
            // The call will be supplied at least ((_minGas * 64) / 63) gas due to the
            // above assertion. This ensures that, in all circumstances (except for when the
            // `_minGas` does not account for the `memory_expansion_cost` and `code_execution_cost`
            // factors of the dynamic cost of the `CALL` opcode), the call will receive at least
            // the minimum amount of gas specified.
            _success :=
                call(
                    gas(), // gas
                    _target, // recipient
                    _value, // ether value
                    add(_calldata, 32), // inloc
                    mload(_calldata), // inlen
                    0x00, // outloc
                    0x00 // outlen
                )
        }
        return _success;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// Libraries
import { Types } from "src/libraries/Types.sol";
import { Encoding } from "src/libraries/Encoding.sol";
/// @title Hashing
/// @notice Hashing handles Optimism's various different hashing schemes.
library Hashing {
    /// @notice Computes the hash of the RLP encoded L2 transaction that would be generated when a
    ///         given deposit is sent to the L2 system. Useful for searching for a deposit in the L2
    ///         system.
    /// @param _tx User deposit transaction to hash.
    /// @return Hash of the RLP encoded L2 deposit transaction.
    function hashDepositTransaction(Types.UserDepositTransaction memory _tx) internal pure returns (bytes32) {
        return keccak256(Encoding.encodeDepositTransaction(_tx));
    }
    /// @notice Computes the deposit transaction's "source hash", a value that guarantees the hash
    ///         of the L2 transaction that corresponds to a deposit is unique and is
    ///         deterministically generated from L1 transaction data.
    /// @param _l1BlockHash Hash of the L1 block where the deposit was included.
    /// @param _logIndex    The index of the log that created the deposit transaction.
    /// @return Hash of the deposit transaction's "source hash".
    function hashDepositSource(bytes32 _l1BlockHash, uint256 _logIndex) internal pure returns (bytes32) {
        bytes32 depositId = keccak256(abi.encode(_l1BlockHash, _logIndex));
        return keccak256(abi.encode(bytes32(0), depositId));
    }
    /// @notice Hashes the cross domain message based on the version that is encoded into the
    ///         message nonce.
    /// @param _nonce    Message nonce with version encoded into the first two bytes.
    /// @param _sender   Address of the sender of the message.
    /// @param _target   Address of the target of the message.
    /// @param _value    ETH value to send to the target.
    /// @param _gasLimit Gas limit to use for the message.
    /// @param _data     Data to send with the message.
    /// @return Hashed cross domain message.
    function hashCrossDomainMessage(
        uint256 _nonce,
        address _sender,
        address _target,
        uint256 _value,
        uint256 _gasLimit,
        bytes memory _data
    )
        internal
        pure
        returns (bytes32)
    {
        (, uint16 version) = Encoding.decodeVersionedNonce(_nonce);
        if (version == 0) {
            return hashCrossDomainMessageV0(_target, _sender, _data, _nonce);
        } else if (version == 1) {
            return hashCrossDomainMessageV1(_nonce, _sender, _target, _value, _gasLimit, _data);
        } else {
            revert("Hashing: unknown cross domain message version");
        }
    }
    /// @notice Hashes a cross domain message based on the V0 (legacy) encoding.
    /// @param _target Address of the target of the message.
    /// @param _sender Address of the sender of the message.
    /// @param _data   Data to send with the message.
    /// @param _nonce  Message nonce.
    /// @return Hashed cross domain message.
    function hashCrossDomainMessageV0(
        address _target,
        address _sender,
        bytes memory _data,
        uint256 _nonce
    )
        internal
        pure
        returns (bytes32)
    {
        return keccak256(Encoding.encodeCrossDomainMessageV0(_target, _sender, _data, _nonce));
    }
    /// @notice Hashes a cross domain message based on the V1 (current) encoding.
    /// @param _nonce    Message nonce.
    /// @param _sender   Address of the sender of the message.
    /// @param _target   Address of the target of the message.
    /// @param _value    ETH value to send to the target.
    /// @param _gasLimit Gas limit to use for the message.
    /// @param _data     Data to send with the message.
    /// @return Hashed cross domain message.
    function hashCrossDomainMessageV1(
        uint256 _nonce,
        address _sender,
        address _target,
        uint256 _value,
        uint256 _gasLimit,
        bytes memory _data
    )
        internal
        pure
        returns (bytes32)
    {
        return keccak256(Encoding.encodeCrossDomainMessageV1(_nonce, _sender, _target, _value, _gasLimit, _data));
    }
    /// @notice Derives the withdrawal hash according to the encoding in the L2 Withdrawer contract
    /// @param _tx Withdrawal transaction to hash.
    /// @return Hashed withdrawal transaction.
    function hashWithdrawal(Types.WithdrawalTransaction memory _tx) internal pure returns (bytes32) {
        return keccak256(abi.encode(_tx.nonce, _tx.sender, _tx.target, _tx.value, _tx.gasLimit, _tx.data));
    }
    /// @notice Hashes the various elements of an output root proof into an output root hash which
    ///         can be used to check if the proof is valid.
    /// @param _outputRootProof Output root proof which should hash to an output root.
    /// @return Hashed output root proof.
    function hashOutputRootProof(Types.OutputRootProof memory _outputRootProof) internal pure returns (bytes32) {
        return keccak256(
            abi.encode(
                _outputRootProof.version,
                _outputRootProof.stateRoot,
                _outputRootProof.messagePasserStorageRoot,
                _outputRootProof.latestBlockhash
            )
        );
    }
    /// @notice Generates a unique hash for cross l2 messages. This hash is used to identify
    ///         the message and ensure it is not relayed more than once.
    /// @param _destination Chain ID of the destination chain.
    /// @param _source Chain ID of the source chain.
    /// @param _nonce Unique nonce associated with the message to prevent replay attacks.
    /// @param _sender Address of the user who originally sent the message.
    /// @param _target Address of the contract or wallet that the message is targeting on the destination chain.
    /// @param _message The message payload to be relayed to the target on the destination chain.
    /// @return Hash of the encoded message parameters, used to uniquely identify the message.
    function hashL2toL2CrossDomainMessage(
        uint256 _destination,
        uint256 _source,
        uint256 _nonce,
        address _sender,
        address _target,
        bytes memory _message
    )
        internal
        pure
        returns (bytes32)
    {
        return keccak256(abi.encode(_destination, _source, _nonce, _sender, _target, _message));
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// Libraries
import { Types } from "src/libraries/Types.sol";
import { Hashing } from "src/libraries/Hashing.sol";
import { RLPWriter } from "src/libraries/rlp/RLPWriter.sol";
/// @title Encoding
/// @notice Encoding handles Optimism's various different encoding schemes.
library Encoding {
    /// @notice RLP encodes the L2 transaction that would be generated when a given deposit is sent
    ///         to the L2 system. Useful for searching for a deposit in the L2 system. The
    ///         transaction is prefixed with 0x7e to identify its EIP-2718 type.
    /// @param _tx User deposit transaction to encode.
    /// @return RLP encoded L2 deposit transaction.
    function encodeDepositTransaction(Types.UserDepositTransaction memory _tx) internal pure returns (bytes memory) {
        bytes32 source = Hashing.hashDepositSource(_tx.l1BlockHash, _tx.logIndex);
        bytes[] memory raw = new bytes[](8);
        raw[0] = RLPWriter.writeBytes(abi.encodePacked(source));
        raw[1] = RLPWriter.writeAddress(_tx.from);
        raw[2] = _tx.isCreation ? RLPWriter.writeBytes("") : RLPWriter.writeAddress(_tx.to);
        raw[3] = RLPWriter.writeUint(_tx.mint);
        raw[4] = RLPWriter.writeUint(_tx.value);
        raw[5] = RLPWriter.writeUint(uint256(_tx.gasLimit));
        raw[6] = RLPWriter.writeBool(false);
        raw[7] = RLPWriter.writeBytes(_tx.data);
        return abi.encodePacked(uint8(0x7e), RLPWriter.writeList(raw));
    }
    /// @notice Encodes the cross domain message based on the version that is encoded into the
    ///         message nonce.
    /// @param _nonce    Message nonce with version encoded into the first two bytes.
    /// @param _sender   Address of the sender of the message.
    /// @param _target   Address of the target of the message.
    /// @param _value    ETH value to send to the target.
    /// @param _gasLimit Gas limit to use for the message.
    /// @param _data     Data to send with the message.
    /// @return Encoded cross domain message.
    function encodeCrossDomainMessage(
        uint256 _nonce,
        address _sender,
        address _target,
        uint256 _value,
        uint256 _gasLimit,
        bytes memory _data
    )
        internal
        pure
        returns (bytes memory)
    {
        (, uint16 version) = decodeVersionedNonce(_nonce);
        if (version == 0) {
            return encodeCrossDomainMessageV0(_target, _sender, _data, _nonce);
        } else if (version == 1) {
            return encodeCrossDomainMessageV1(_nonce, _sender, _target, _value, _gasLimit, _data);
        } else {
            revert("Encoding: unknown cross domain message version");
        }
    }
    /// @notice Encodes a cross domain message based on the V0 (legacy) encoding.
    /// @param _target Address of the target of the message.
    /// @param _sender Address of the sender of the message.
    /// @param _data   Data to send with the message.
    /// @param _nonce  Message nonce.
    /// @return Encoded cross domain message.
    function encodeCrossDomainMessageV0(
        address _target,
        address _sender,
        bytes memory _data,
        uint256 _nonce
    )
        internal
        pure
        returns (bytes memory)
    {
        // nosemgrep: sol-style-use-abi-encodecall
        return abi.encodeWithSignature("relayMessage(address,address,bytes,uint256)", _target, _sender, _data, _nonce);
    }
    /// @notice Encodes a cross domain message based on the V1 (current) encoding.
    /// @param _nonce    Message nonce.
    /// @param _sender   Address of the sender of the message.
    /// @param _target   Address of the target of the message.
    /// @param _value    ETH value to send to the target.
    /// @param _gasLimit Gas limit to use for the message.
    /// @param _data     Data to send with the message.
    /// @return Encoded cross domain message.
    function encodeCrossDomainMessageV1(
        uint256 _nonce,
        address _sender,
        address _target,
        uint256 _value,
        uint256 _gasLimit,
        bytes memory _data
    )
        internal
        pure
        returns (bytes memory)
    {
        // nosemgrep: sol-style-use-abi-encodecall
        return abi.encodeWithSignature(
            "relayMessage(uint256,address,address,uint256,uint256,bytes)",
            _nonce,
            _sender,
            _target,
            _value,
            _gasLimit,
            _data
        );
    }
    /// @notice Adds a version number into the first two bytes of a message nonce.
    /// @param _nonce   Message nonce to encode into.
    /// @param _version Version number to encode into the message nonce.
    /// @return Message nonce with version encoded into the first two bytes.
    function encodeVersionedNonce(uint240 _nonce, uint16 _version) internal pure returns (uint256) {
        uint256 nonce;
        assembly {
            nonce := or(shl(240, _version), _nonce)
        }
        return nonce;
    }
    /// @notice Pulls the version out of a version-encoded nonce.
    /// @param _nonce Message nonce with version encoded into the first two bytes.
    /// @return Nonce without encoded version.
    /// @return Version of the message.
    function decodeVersionedNonce(uint256 _nonce) internal pure returns (uint240, uint16) {
        uint240 nonce;
        uint16 version;
        assembly {
            nonce := and(_nonce, 0x0000ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
            version := shr(240, _nonce)
        }
        return (nonce, version);
    }
    /// @notice Returns an appropriately encoded call to L1Block.setL1BlockValuesEcotone
    /// @param _baseFeeScalar       L1 base fee Scalar
    /// @param _blobBaseFeeScalar   L1 blob base fee Scalar
    /// @param _sequenceNumber      Number of L2 blocks since epoch start.
    /// @param _timestamp           L1 timestamp.
    /// @param _number              L1 blocknumber.
    /// @param _baseFee             L1 base fee.
    /// @param _blobBaseFee         L1 blob base fee.
    /// @param _hash                L1 blockhash.
    /// @param _batcherHash         Versioned hash to authenticate batcher by.
    function encodeSetL1BlockValuesEcotone(
        uint32 _baseFeeScalar,
        uint32 _blobBaseFeeScalar,
        uint64 _sequenceNumber,
        uint64 _timestamp,
        uint64 _number,
        uint256 _baseFee,
        uint256 _blobBaseFee,
        bytes32 _hash,
        bytes32 _batcherHash
    )
        internal
        pure
        returns (bytes memory)
    {
        bytes4 functionSignature = bytes4(keccak256("setL1BlockValuesEcotone()"));
        return abi.encodePacked(
            functionSignature,
            _baseFeeScalar,
            _blobBaseFeeScalar,
            _sequenceNumber,
            _timestamp,
            _number,
            _baseFee,
            _blobBaseFee,
            _hash,
            _batcherHash
        );
    }
    /// @notice Returns an appropriately encoded call to L1Block.setL1BlockValuesIsthmus
    /// @param _baseFeeScalar       L1 base fee Scalar
    /// @param _blobBaseFeeScalar   L1 blob base fee Scalar
    /// @param _sequenceNumber      Number of L2 blocks since epoch start.
    /// @param _timestamp           L1 timestamp.
    /// @param _number              L1 blocknumber.
    /// @param _baseFee             L1 base fee.
    /// @param _blobBaseFee         L1 blob base fee.
    /// @param _hash                L1 blockhash.
    /// @param _batcherHash         Versioned hash to authenticate batcher by.
    /// @param _operatorFeeScalar   Operator fee scalar.
    /// @param _operatorFeeConstant Operator fee constant.
    function encodeSetL1BlockValuesIsthmus(
        uint32 _baseFeeScalar,
        uint32 _blobBaseFeeScalar,
        uint64 _sequenceNumber,
        uint64 _timestamp,
        uint64 _number,
        uint256 _baseFee,
        uint256 _blobBaseFee,
        bytes32 _hash,
        bytes32 _batcherHash,
        uint32 _operatorFeeScalar,
        uint64 _operatorFeeConstant
    )
        internal
        pure
        returns (bytes memory)
    {
        bytes4 functionSignature = bytes4(keccak256("setL1BlockValuesIsthmus()"));
        return abi.encodePacked(
            functionSignature,
            _baseFeeScalar,
            _blobBaseFeeScalar,
            _sequenceNumber,
            _timestamp,
            _number,
            _baseFee,
            _blobBaseFee,
            _hash,
            _batcherHash,
            _operatorFeeScalar,
            _operatorFeeConstant
        );
    }
    /// @notice Returns an appropriately encoded call to L1Block.setL1BlockValuesInterop
    /// @param _baseFeeScalar       L1 base fee Scalar
    /// @param _blobBaseFeeScalar   L1 blob base fee Scalar
    /// @param _sequenceNumber      Number of L2 blocks since epoch start.
    /// @param _timestamp           L1 timestamp.
    /// @param _number              L1 blocknumber.
    /// @param _baseFee             L1 base fee.
    /// @param _blobBaseFee         L1 blob base fee.
    /// @param _hash                L1 blockhash.
    /// @param _batcherHash         Versioned hash to authenticate batcher by.
    function encodeSetL1BlockValuesInterop(
        uint32 _baseFeeScalar,
        uint32 _blobBaseFeeScalar,
        uint64 _sequenceNumber,
        uint64 _timestamp,
        uint64 _number,
        uint256 _baseFee,
        uint256 _blobBaseFee,
        bytes32 _hash,
        bytes32 _batcherHash
    )
        internal
        pure
        returns (bytes memory)
    {
        bytes4 functionSignature = bytes4(keccak256("setL1BlockValuesInterop()"));
        return abi.encodePacked(
            functionSignature,
            _baseFeeScalar,
            _blobBaseFeeScalar,
            _sequenceNumber,
            _timestamp,
            _number,
            _baseFee,
            _blobBaseFee,
            _hash,
            _batcherHash
        );
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// Interfaces
import { IResourceMetering } from "interfaces/L1/IResourceMetering.sol";
/// @title Constants
/// @notice Constants is a library for storing constants. Simple! Don't put everything in here, just
///         the stuff used in multiple contracts. Constants that only apply to a single contract
///         should be defined in that contract instead.
library Constants {
    /// @notice Special address to be used as the tx origin for gas estimation calls in the
    ///         OptimismPortal and CrossDomainMessenger calls. You only need to use this address if
    ///         the minimum gas limit specified by the user is not actually enough to execute the
    ///         given message and you're attempting to estimate the actual necessary gas limit. We
    ///         use address(1) because it's the ecrecover precompile and therefore guaranteed to
    ///         never have any code on any EVM chain.
    address internal constant ESTIMATION_ADDRESS = address(1);
    /// @notice Value used for the L2 sender storage slot in both the OptimismPortal and the
    ///         CrossDomainMessenger contracts before an actual sender is set. This value is
    ///         non-zero to reduce the gas cost of message passing transactions.
    address internal constant DEFAULT_L2_SENDER = 0x000000000000000000000000000000000000dEaD;
    /// @notice The storage slot that holds the address of a proxy implementation.
    /// @dev `bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)`
    bytes32 internal constant PROXY_IMPLEMENTATION_ADDRESS =
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
    /// @notice The storage slot that holds the address of the owner.
    /// @dev `bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1)`
    bytes32 internal constant PROXY_OWNER_ADDRESS = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
    /// @notice The address that represents ether when dealing with ERC20 token addresses.
    address internal constant ETHER = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    /// @notice The address that represents the system caller responsible for L1 attributes
    ///         transactions.
    address internal constant DEPOSITOR_ACCOUNT = 0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001;
    /// @notice Returns the default values for the ResourceConfig. These are the recommended values
    ///         for a production network.
    function DEFAULT_RESOURCE_CONFIG() internal pure returns (IResourceMetering.ResourceConfig memory) {
        IResourceMetering.ResourceConfig memory config = IResourceMetering.ResourceConfig({
            maxResourceLimit: 20_000_000,
            elasticityMultiplier: 10,
            baseFeeMaxChangeDenominator: 8,
            minimumBaseFee: 1 gwei,
            systemTxMaxGas: 1_000_000,
            maximumBaseFee: type(uint128).max
        });
        return config;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title Types
/// @notice Contains various types used throughout the Optimism contract system.
library Types {
    /// @notice OutputProposal represents a commitment to the L2 state. The timestamp is the L1
    ///         timestamp that the output root is posted. This timestamp is used to verify that the
    ///         finalization period has passed since the output root was submitted.
    /// @custom:field outputRoot    Hash of the L2 output.
    /// @custom:field timestamp     Timestamp of the L1 block that the output root was submitted in.
    /// @custom:field l2BlockNumber L2 block number that the output corresponds to.
    struct OutputProposal {
        bytes32 outputRoot;
        uint128 timestamp;
        uint128 l2BlockNumber;
    }
    /// @notice Struct representing the elements that are hashed together to generate an output root
    ///         which itself represents a snapshot of the L2 state.
    /// @custom:field version                  Version of the output root.
    /// @custom:field stateRoot                Root of the state trie at the block of this output.
    /// @custom:field messagePasserStorageRoot Root of the message passer storage trie.
    /// @custom:field latestBlockhash          Hash of the block this output was generated from.
    struct OutputRootProof {
        bytes32 version;
        bytes32 stateRoot;
        bytes32 messagePasserStorageRoot;
        bytes32 latestBlockhash;
    }
    /// @notice Struct representing a deposit transaction (L1 => L2 transaction) created by an end
    ///         user (as opposed to a system deposit transaction generated by the system).
    /// @custom:field from        Address of the sender of the transaction.
    /// @custom:field to          Address of the recipient of the transaction.
    /// @custom:field isCreation  True if the transaction is a contract creation.
    /// @custom:field value       Value to send to the recipient.
    /// @custom:field mint        Amount of ETH to mint.
    /// @custom:field gasLimit    Gas limit of the transaction.
    /// @custom:field data        Data of the transaction.
    /// @custom:field l1BlockHash Hash of the block the transaction was submitted in.
    /// @custom:field logIndex    Index of the log in the block the transaction was submitted in.
    struct UserDepositTransaction {
        address from;
        address to;
        bool isCreation;
        uint256 value;
        uint256 mint;
        uint64 gasLimit;
        bytes data;
        bytes32 l1BlockHash;
        uint256 logIndex;
    }
    /// @notice Struct representing a withdrawal transaction.
    /// @custom:field nonce    Nonce of the withdrawal transaction
    /// @custom:field sender   Address of the sender of the transaction.
    /// @custom:field target   Address of the recipient of the transaction.
    /// @custom:field value    Value to send to the recipient.
    /// @custom:field gasLimit Gas limit of the transaction.
    /// @custom:field data     Data of the transaction.
    struct WithdrawalTransaction {
        uint256 nonce;
        address sender;
        address target;
        uint256 value;
        uint256 gasLimit;
        bytes data;
    }
    /// @notice Enum representing where the FeeVault withdraws funds to.
    /// @custom:value L1 FeeVault withdraws funds to L1.
    /// @custom:value L2 FeeVault withdraws funds to L2.
    enum WithdrawalNetwork {
        L1,
        L2
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
// Libraries
import { Position } from "src/dispute/lib/LibPosition.sol";
using LibClaim for Claim global;
using LibHash for Hash global;
using LibDuration for Duration global;
using LibClock for Clock global;
using LibGameId for GameId global;
using LibTimestamp for Timestamp global;
using LibVMStatus for VMStatus global;
using LibGameType for GameType global;
/// @notice A `Clock` represents a packed `Duration` and `Timestamp`
/// @dev The packed layout of this type is as follows:
/// ┌────────────┬────────────────┐
/// │    Bits    │     Value      │
/// ├────────────┼────────────────┤
/// │ [0, 64)    │ Duration       │
/// │ [64, 128)  │ Timestamp      │
/// └────────────┴────────────────┘
type Clock is uint128;
/// @title LibClock
/// @notice This library contains helper functions for working with the `Clock` type.
library LibClock {
    /// @notice Packs a `Duration` and `Timestamp` into a `Clock` type.
    /// @param _duration The `Duration` to pack into the `Clock` type.
    /// @param _timestamp The `Timestamp` to pack into the `Clock` type.
    /// @return clock_ The `Clock` containing the `_duration` and `_timestamp`.
    function wrap(Duration _duration, Timestamp _timestamp) internal pure returns (Clock clock_) {
        assembly {
            clock_ := or(shl(0x40, _duration), _timestamp)
        }
    }
    /// @notice Pull the `Duration` out of a `Clock` type.
    /// @param _clock The `Clock` type to pull the `Duration` out of.
    /// @return duration_ The `Duration` pulled out of `_clock`.
    function duration(Clock _clock) internal pure returns (Duration duration_) {
        // Shift the high-order 64 bits into the low-order 64 bits, leaving only the `duration`.
        assembly {
            duration_ := shr(0x40, _clock)
        }
    }
    /// @notice Pull the `Timestamp` out of a `Clock` type.
    /// @param _clock The `Clock` type to pull the `Timestamp` out of.
    /// @return timestamp_ The `Timestamp` pulled out of `_clock`.
    function timestamp(Clock _clock) internal pure returns (Timestamp timestamp_) {
        // Clean the high-order 192 bits by shifting the clock left and then right again, leaving
        // only the `timestamp`.
        assembly {
            timestamp_ := shr(0xC0, shl(0xC0, _clock))
        }
    }
    /// @notice Get the value of a `Clock` type in the form of the underlying uint128.
    /// @param _clock The `Clock` type to get the value of.
    /// @return clock_ The value of the `Clock` type as a uint128 type.
    function raw(Clock _clock) internal pure returns (uint128 clock_) {
        assembly {
            clock_ := _clock
        }
    }
}
/// @notice A `GameId` represents a packed 4 byte game ID, a 8 byte timestamp, and a 20 byte address.
/// @dev The packed layout of this type is as follows:
/// ┌───────────┬───────────┐
/// │   Bits    │   Value   │
/// ├───────────┼───────────┤
/// │ [0, 32)   │ Game Type │
/// │ [32, 96)  │ Timestamp │
/// │ [96, 256) │ Address   │
/// └───────────┴───────────┘
type GameId is bytes32;
/// @title LibGameId
/// @notice Utility functions for packing and unpacking GameIds.
library LibGameId {
    /// @notice Packs values into a 32 byte GameId type.
    /// @param _gameType The game type.
    /// @param _timestamp The timestamp of the game's creation.
    /// @param _gameProxy The game proxy address.
    /// @return gameId_ The packed GameId.
    function pack(
        GameType _gameType,
        Timestamp _timestamp,
        address _gameProxy
    )
        internal
        pure
        returns (GameId gameId_)
    {
        assembly {
            gameId_ := or(or(shl(224, _gameType), shl(160, _timestamp)), _gameProxy)
        }
    }
    /// @notice Unpacks values from a 32 byte GameId type.
    /// @param _gameId The packed GameId.
    /// @return gameType_ The game type.
    /// @return timestamp_ The timestamp of the game's creation.
    /// @return gameProxy_ The game proxy address.
    function unpack(GameId _gameId)
        internal
        pure
        returns (GameType gameType_, Timestamp timestamp_, address gameProxy_)
    {
        assembly {
            gameType_ := shr(224, _gameId)
            timestamp_ := and(shr(160, _gameId), 0xFFFFFFFFFFFFFFFF)
            gameProxy_ := and(_gameId, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
        }
    }
}
/// @notice A claim represents an MPT root representing the state of the fault proof program.
type Claim is bytes32;
/// @title LibClaim
/// @notice This library contains helper functions for working with the `Claim` type.
library LibClaim {
    /// @notice Get the value of a `Claim` type in the form of the underlying bytes32.
    /// @param _claim The `Claim` type to get the value of.
    /// @return claim_ The value of the `Claim` type as a bytes32 type.
    function raw(Claim _claim) internal pure returns (bytes32 claim_) {
        assembly {
            claim_ := _claim
        }
    }
    /// @notice Hashes a claim and a position together.
    /// @param _claim A Claim type.
    /// @param _position The position of `claim`.
    /// @param _challengeIndex The index of the claim being moved against.
    /// @return claimHash_ A hash of abi.encodePacked(claim, position|challengeIndex);
    function hashClaimPos(
        Claim _claim,
        Position _position,
        uint256 _challengeIndex
    )
        internal
        pure
        returns (Hash claimHash_)
    {
        assembly {
            mstore(0x00, _claim)
            mstore(0x20, or(shl(128, _position), and(0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF, _challengeIndex)))
            claimHash_ := keccak256(0x00, 0x40)
        }
    }
}
/// @notice A dedicated duration type.
/// @dev Unit: seconds
type Duration is uint64;
/// @title LibDuration
/// @notice This library contains helper functions for working with the `Duration` type.
library LibDuration {
    /// @notice Get the value of a `Duration` type in the form of the underlying uint64.
    /// @param _duration The `Duration` type to get the value of.
    /// @return duration_ The value of the `Duration` type as a uint64 type.
    function raw(Duration _duration) internal pure returns (uint64 duration_) {
        assembly {
            duration_ := _duration
        }
    }
}
/// @notice A custom type for a generic hash.
type Hash is bytes32;
/// @title LibHash
/// @notice This library contains helper functions for working with the `Hash` type.
library LibHash {
    /// @notice Get the value of a `Hash` type in the form of the underlying bytes32.
    /// @param _hash The `Hash` type to get the value of.
    /// @return hash_ The value of the `Hash` type as a bytes32 type.
    function raw(Hash _hash) internal pure returns (bytes32 hash_) {
        assembly {
            hash_ := _hash
        }
    }
}
/// @notice A dedicated timestamp type.
type Timestamp is uint64;
/// @title LibTimestamp
/// @notice This library contains helper functions for working with the `Timestamp` type.
library LibTimestamp {
    /// @notice Get the value of a `Timestamp` type in the form of the underlying uint64.
    /// @param _timestamp The `Timestamp` type to get the value of.
    /// @return timestamp_ The value of the `Timestamp` type as a uint64 type.
    function raw(Timestamp _timestamp) internal pure returns (uint64 timestamp_) {
        assembly {
            timestamp_ := _timestamp
        }
    }
}
/// @notice A `VMStatus` represents the status of a VM execution.
type VMStatus is uint8;
/// @title LibVMStatus
/// @notice This library contains helper functions for working with the `VMStatus` type.
library LibVMStatus {
    /// @notice Get the value of a `VMStatus` type in the form of the underlying uint8.
    /// @param _vmstatus The `VMStatus` type to get the value of.
    /// @return vmstatus_ The value of the `VMStatus` type as a uint8 type.
    function raw(VMStatus _vmstatus) internal pure returns (uint8 vmstatus_) {
        assembly {
            vmstatus_ := _vmstatus
        }
    }
}
/// @notice A `GameType` represents the type of game being played.
type GameType is uint32;
/// @title LibGameType
/// @notice This library contains helper functions for working with the `GameType` type.
library LibGameType {
    /// @notice Get the value of a `GameType` type in the form of the underlying uint32.
    /// @param _gametype The `GameType` type to get the value of.
    /// @return gametype_ The value of the `GameType` type as a uint32 type.
    function raw(GameType _gametype) internal pure returns (uint32 gametype_) {
        assembly {
            gametype_ := _gametype
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { IInitializable } from "interfaces/dispute/IInitializable.sol";
import { Timestamp, GameStatus, GameType, Claim, Hash } from "src/dispute/lib/Types.sol";
interface IDisputeGame is IInitializable {
    event Resolved(GameStatus indexed status);
    function createdAt() external view returns (Timestamp);
    function resolvedAt() external view returns (Timestamp);
    function status() external view returns (GameStatus);
    function gameType() external view returns (GameType gameType_);
    function gameCreator() external pure returns (address creator_);
    function rootClaim() external pure returns (Claim rootClaim_);
    function l1Head() external pure returns (Hash l1Head_);
    function l2BlockNumber() external pure returns (uint256 l2BlockNumber_);
    function extraData() external pure returns (bytes memory extraData_);
    function resolve() external returns (GameStatus status_);
    function gameData() external view returns (GameType gameType_, Claim rootClaim_, bytes memory extraData_);
    function wasRespectedGameTypeWhenCreated() external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { IDisputeGame } from "interfaces/dispute/IDisputeGame.sol";
import { GameId, Timestamp, Claim, Hash, GameType } from "src/dispute/lib/Types.sol";
interface IDisputeGameFactory {
    struct GameSearchResult {
        uint256 index;
        GameId metadata;
        Timestamp timestamp;
        Claim rootClaim;
        bytes extraData;
    }
    error GameAlreadyExists(Hash uuid);
    error IncorrectBondAmount();
    error NoImplementation(GameType gameType);
    event DisputeGameCreated(address indexed disputeProxy, GameType indexed gameType, Claim indexed rootClaim);
    event ImplementationSet(address indexed impl, GameType indexed gameType);
    event InitBondUpdated(GameType indexed gameType, uint256 indexed newBond);
    event Initialized(uint8 version);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    function create(
        GameType _gameType,
        Claim _rootClaim,
        bytes memory _extraData
    )
        external
        payable
        returns (IDisputeGame proxy_);
    function findLatestGames(
        GameType _gameType,
        uint256 _start,
        uint256 _n
    )
        external
        view
        returns (GameSearchResult[] memory games_);
    function gameAtIndex(uint256 _index)
        external
        view
        returns (GameType gameType_, Timestamp timestamp_, IDisputeGame proxy_);
    function gameCount() external view returns (uint256 gameCount_);
    function gameImpls(GameType) external view returns (IDisputeGame);
    function games(
        GameType _gameType,
        Claim _rootClaim,
        bytes memory _extraData
    )
        external
        view
        returns (IDisputeGame proxy_, Timestamp timestamp_);
    function getGameUUID(
        GameType _gameType,
        Claim _rootClaim,
        bytes memory _extraData
    )
        external
        pure
        returns (Hash uuid_);
    function initBonds(GameType) external view returns (uint256);
    function initialize(address _owner) external;
    function owner() external view returns (address);
    function renounceOwnership() external;
    function setImplementation(GameType _gameType, IDisputeGame _impl) external;
    function setInitBond(GameType _gameType, uint256 _initBond) external;
    function transferOwnership(address newOwner) external; // nosemgrep
    function version() external view returns (string memory);
    function __constructor__() external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { IResourceMetering } from "interfaces/L1/IResourceMetering.sol";
interface ISystemConfig {
    enum UpdateType {
        BATCHER,
        FEE_SCALARS,
        GAS_LIMIT,
        UNSAFE_BLOCK_SIGNER,
        EIP_1559_PARAMS,
        OPERATOR_FEE_PARAMS
    }
    struct Addresses {
        address l1CrossDomainMessenger;
        address l1ERC721Bridge;
        address l1StandardBridge;
        address disputeGameFactory;
        address optimismPortal;
        address optimismMintableERC20Factory;
    }
    event ConfigUpdate(uint256 indexed version, UpdateType indexed updateType, bytes data);
    event Initialized(uint8 version);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    function BATCH_INBOX_SLOT() external view returns (bytes32);
    function DISPUTE_GAME_FACTORY_SLOT() external view returns (bytes32);
    function L1_CROSS_DOMAIN_MESSENGER_SLOT() external view returns (bytes32);
    function L1_ERC_721_BRIDGE_SLOT() external view returns (bytes32);
    function L1_STANDARD_BRIDGE_SLOT() external view returns (bytes32);
    function OPTIMISM_MINTABLE_ERC20_FACTORY_SLOT() external view returns (bytes32);
    function OPTIMISM_PORTAL_SLOT() external view returns (bytes32);
    function START_BLOCK_SLOT() external view returns (bytes32);
    function UNSAFE_BLOCK_SIGNER_SLOT() external view returns (bytes32);
    function VERSION() external view returns (uint256);
    function basefeeScalar() external view returns (uint32);
    function batchInbox() external view returns (address addr_);
    function batcherHash() external view returns (bytes32);
    function blobbasefeeScalar() external view returns (uint32);
    function disputeGameFactory() external view returns (address addr_);
    function gasLimit() external view returns (uint64);
    function eip1559Denominator() external view returns (uint32);
    function eip1559Elasticity() external view returns (uint32);
    function getAddresses() external view returns (Addresses memory);
    function initialize(
        address _owner,
        uint32 _basefeeScalar,
        uint32 _blobbasefeeScalar,
        bytes32 _batcherHash,
        uint64 _gasLimit,
        address _unsafeBlockSigner,
        IResourceMetering.ResourceConfig memory _config,
        address _batchInbox,
        Addresses memory _addresses
    )
        external;
    function l1CrossDomainMessenger() external view returns (address addr_);
    function l1ERC721Bridge() external view returns (address addr_);
    function l1StandardBridge() external view returns (address addr_);
    function maximumGasLimit() external pure returns (uint64);
    function minimumGasLimit() external view returns (uint64);
    function operatorFeeConstant() external view returns (uint64);
    function operatorFeeScalar() external view returns (uint32);
    function optimismMintableERC20Factory() external view returns (address addr_);
    function optimismPortal() external view returns (address addr_);
    function overhead() external view returns (uint256);
    function owner() external view returns (address);
    function renounceOwnership() external;
    function resourceConfig() external view returns (IResourceMetering.ResourceConfig memory);
    function scalar() external view returns (uint256);
    function setBatcherHash(bytes32 _batcherHash) external;
    function setGasConfig(uint256 _overhead, uint256 _scalar) external;
    function setGasConfigEcotone(uint32 _basefeeScalar, uint32 _blobbasefeeScalar) external;
    function setGasLimit(uint64 _gasLimit) external;
    function setOperatorFeeScalars(uint32 _operatorFeeScalar, uint64 _operatorFeeConstant) external;
    function setUnsafeBlockSigner(address _unsafeBlockSigner) external;
    function setEIP1559Params(uint32 _denominator, uint32 _elasticity) external;
    function startBlock() external view returns (uint256 startBlock_);
    function transferOwnership(address newOwner) external; // nosemgrep
    function unsafeBlockSigner() external view returns (address addr_);
    function version() external pure returns (string memory);
    function __constructor__() external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.
        return account.code.length > 0;
    }
    /**
     * @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://diligence.consensys.net/posts/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/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");
        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
    /**
     * @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, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * 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.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }
    /**
     * @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`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }
    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @custom:attribution https://github.com/bakaoh/solidity-rlp-encode
/// @title RLPWriter
/// @author RLPWriter is a library for encoding Solidity types to RLP bytes. Adapted from Bakaoh's
///         RLPEncode library (https://github.com/bakaoh/solidity-rlp-encode) with minor
///         modifications to improve legibility.
library RLPWriter {
    /// @notice RLP encodes a byte string.
    /// @param _in The byte string to encode.
    /// @return out_ The RLP encoded string in bytes.
    function writeBytes(bytes memory _in) internal pure returns (bytes memory out_) {
        if (_in.length == 1 && uint8(_in[0]) < 128) {
            out_ = _in;
        } else {
            out_ = abi.encodePacked(_writeLength(_in.length, 128), _in);
        }
    }
    /// @notice RLP encodes a list of RLP encoded byte byte strings.
    /// @param _in The list of RLP encoded byte strings.
    /// @return list_ The RLP encoded list of items in bytes.
    function writeList(bytes[] memory _in) internal pure returns (bytes memory list_) {
        list_ = _flatten(_in);
        list_ = abi.encodePacked(_writeLength(list_.length, 192), list_);
    }
    /// @notice RLP encodes a string.
    /// @param _in The string to encode.
    /// @return out_ The RLP encoded string in bytes.
    function writeString(string memory _in) internal pure returns (bytes memory out_) {
        out_ = writeBytes(bytes(_in));
    }
    /// @notice RLP encodes an address.
    /// @param _in The address to encode.
    /// @return out_ The RLP encoded address in bytes.
    function writeAddress(address _in) internal pure returns (bytes memory out_) {
        out_ = writeBytes(abi.encodePacked(_in));
    }
    /// @notice RLP encodes a uint.
    /// @param _in The uint256 to encode.
    /// @return out_ The RLP encoded uint256 in bytes.
    function writeUint(uint256 _in) internal pure returns (bytes memory out_) {
        out_ = writeBytes(_toBinary(_in));
    }
    /// @notice RLP encodes a bool.
    /// @param _in The bool to encode.
    /// @return out_ The RLP encoded bool in bytes.
    function writeBool(bool _in) internal pure returns (bytes memory out_) {
        out_ = new bytes(1);
        out_[0] = (_in ? bytes1(0x01) : bytes1(0x80));
    }
    /// @notice Encode the first byte and then the `len` in binary form if `length` is more than 55.
    /// @param _len    The length of the string or the payload.
    /// @param _offset 128 if item is string, 192 if item is list.
    /// @return out_ RLP encoded bytes.
    function _writeLength(uint256 _len, uint256 _offset) private pure returns (bytes memory out_) {
        if (_len < 56) {
            out_ = new bytes(1);
            out_[0] = bytes1(uint8(_len) + uint8(_offset));
        } else {
            uint256 lenLen;
            uint256 i = 1;
            while (_len / i != 0) {
                lenLen++;
                i *= 256;
            }
            out_ = new bytes(lenLen + 1);
            out_[0] = bytes1(uint8(lenLen) + uint8(_offset) + 55);
            for (i = 1; i <= lenLen; i++) {
                out_[i] = bytes1(uint8((_len / (256 ** (lenLen - i))) % 256));
            }
        }
    }
    /// @notice Encode integer in big endian binary form with no leading zeroes.
    /// @param _x The integer to encode.
    /// @return out_ RLP encoded bytes.
    function _toBinary(uint256 _x) private pure returns (bytes memory out_) {
        bytes memory b = abi.encodePacked(_x);
        uint256 i = 0;
        for (; i < 32; i++) {
            if (b[i] != 0) {
                break;
            }
        }
        out_ = new bytes(32 - i);
        for (uint256 j = 0; j < out_.length; j++) {
            out_[j] = b[i++];
        }
    }
    /// @custom:attribution https://github.com/Arachnid/solidity-stringutils
    /// @notice Copies a piece of memory to another location.
    /// @param _dest Destination location.
    /// @param _src  Source location.
    /// @param _len  Length of memory to copy.
    function _memcpy(uint256 _dest, uint256 _src, uint256 _len) private pure {
        uint256 dest = _dest;
        uint256 src = _src;
        uint256 len = _len;
        for (; len >= 32; len -= 32) {
            assembly {
                mstore(dest, mload(src))
            }
            dest += 32;
            src += 32;
        }
        uint256 mask;
        unchecked {
            mask = 256 ** (32 - len) - 1;
        }
        assembly {
            let srcpart := and(mload(src), not(mask))
            let destpart := and(mload(dest), mask)
            mstore(dest, or(destpart, srcpart))
        }
    }
    /// @custom:attribution https://github.com/sammayo/solidity-rlp-encoder
    /// @notice Flattens a list of byte strings into one byte string.
    /// @param _list List of byte strings to flatten.
    /// @return out_ The flattened byte string.
    function _flatten(bytes[] memory _list) private pure returns (bytes memory out_) {
        if (_list.length == 0) {
            return new bytes(0);
        }
        uint256 len;
        uint256 i = 0;
        for (; i < _list.length; i++) {
            len += _list[i].length;
        }
        out_ = new bytes(len);
        uint256 flattenedPtr;
        assembly {
            flattenedPtr := add(out_, 0x20)
        }
        for (i = 0; i < _list.length; i++) {
            bytes memory item = _list[i];
            uint256 listPtr;
            assembly {
                listPtr := add(item, 0x20)
            }
            _memcpy(flattenedPtr, listPtr, item.length);
            flattenedPtr += _list[i].length;
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IResourceMetering {
    struct ResourceParams {
        uint128 prevBaseFee;
        uint64 prevBoughtGas;
        uint64 prevBlockNum;
    }
    struct ResourceConfig {
        uint32 maxResourceLimit;
        uint8 elasticityMultiplier;
        uint8 baseFeeMaxChangeDenominator;
        uint32 minimumBaseFee;
        uint32 systemTxMaxGas;
        uint128 maximumBaseFee;
    }
    error OutOfGas();
    event Initialized(uint8 version);
    function params() external view returns (uint128 prevBaseFee, uint64 prevBoughtGas, uint64 prevBlockNum); // nosemgrep
    function __constructor__() external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
using LibPosition for Position global;
/// @notice A `Position` represents a position of a claim within the game tree.
/// @dev This is represented as a "generalized index" where the high-order bit
/// is the level in the tree and the remaining bits is a unique bit pattern, allowing
/// a unique identifier for each node in the tree. Mathematically, it is calculated
/// as 2^{depth} + indexAtDepth.
type Position is uint128;
/// @title LibPosition
/// @notice This library contains helper functions for working with the `Position` type.
library LibPosition {
    /// @notice the `MAX_POSITION_BITLEN` is the number of bits that the `Position` type, and the implementation of
    ///         its behavior within this library, can safely support.
    uint8 internal constant MAX_POSITION_BITLEN = 126;
    /// @notice Computes a generalized index (2^{depth} + indexAtDepth).
    /// @param _depth The depth of the position.
    /// @param _indexAtDepth The index at the depth of the position.
    /// @return position_ The computed generalized index.
    function wrap(uint8 _depth, uint128 _indexAtDepth) internal pure returns (Position position_) {
        assembly {
            // gindex = 2^{_depth} + _indexAtDepth
            position_ := add(shl(_depth, 1), _indexAtDepth)
        }
    }
    /// @notice Pulls the `depth` out of a `Position` type.
    /// @param _position The generalized index to get the `depth` of.
    /// @return depth_ The `depth` of the `position` gindex.
    /// @custom:attribution Solady <https://github.com/Vectorized/Solady>
    function depth(Position _position) internal pure returns (uint8 depth_) {
        // Return the most significant bit offset, which signifies the depth of the gindex.
        assembly {
            depth_ := or(depth_, shl(6, lt(0xffffffffffffffff, shr(depth_, _position))))
            depth_ := or(depth_, shl(5, lt(0xffffffff, shr(depth_, _position))))
            // For the remaining 32 bits, use a De Bruijn lookup.
            _position := shr(depth_, _position)
            _position := or(_position, shr(1, _position))
            _position := or(_position, shr(2, _position))
            _position := or(_position, shr(4, _position))
            _position := or(_position, shr(8, _position))
            _position := or(_position, shr(16, _position))
            depth_ :=
                or(
                    depth_,
                    byte(
                        shr(251, mul(_position, shl(224, 0x07c4acdd))),
                        0x0009010a0d15021d0b0e10121619031e080c141c0f111807131b17061a05041f
                    )
                )
        }
    }
    /// @notice Pulls the `indexAtDepth` out of a `Position` type.
    ///         The `indexAtDepth` is the left/right index of a position at a specific depth within
    ///         the binary tree, starting from index 0. For example, at gindex 2, the `depth` = 1
    ///         and the `indexAtDepth` = 0.
    /// @param _position The generalized index to get the `indexAtDepth` of.
    /// @return indexAtDepth_ The `indexAtDepth` of the `position` gindex.
    function indexAtDepth(Position _position) internal pure returns (uint128 indexAtDepth_) {
        // Return bits p_{msb-1}...p_{0}. This effectively pulls the 2^{depth} out of the gindex,
        // leaving only the `indexAtDepth`.
        uint256 msb = depth(_position);
        assembly {
            indexAtDepth_ := sub(_position, shl(msb, 1))
        }
    }
    /// @notice Get the left child of `_position`.
    /// @param _position The position to get the left position of.
    /// @return left_ The position to the left of `position`.
    function left(Position _position) internal pure returns (Position left_) {
        assembly {
            left_ := shl(1, _position)
        }
    }
    /// @notice Get the right child of `_position`
    /// @param _position The position to get the right position of.
    /// @return right_ The position to the right of `position`.
    function right(Position _position) internal pure returns (Position right_) {
        assembly {
            right_ := or(1, shl(1, _position))
        }
    }
    /// @notice Get the parent position of `_position`.
    /// @param _position The position to get the parent position of.
    /// @return parent_ The parent position of `position`.
    function parent(Position _position) internal pure returns (Position parent_) {
        assembly {
            parent_ := shr(1, _position)
        }
    }
    /// @notice Get the deepest, right most gindex relative to the `position`. This is equivalent to
    ///         calling `right` on a position until the maximum depth is reached.
    /// @param _position The position to get the relative deepest, right most gindex of.
    /// @param _maxDepth The maximum depth of the game.
    /// @return rightIndex_ The deepest, right most gindex relative to the `position`.
    function rightIndex(Position _position, uint256 _maxDepth) internal pure returns (Position rightIndex_) {
        uint256 msb = depth(_position);
        assembly {
            let remaining := sub(_maxDepth, msb)
            rightIndex_ := or(shl(remaining, _position), sub(shl(remaining, 1), 1))
        }
    }
    /// @notice Get the deepest, right most trace index relative to the `position`. This is
    ///         equivalent to calling `right` on a position until the maximum depth is reached and
    ///         then finding its index at depth.
    /// @param _position The position to get the relative trace index of.
    /// @param _maxDepth The maximum depth of the game.
    /// @return traceIndex_ The trace index relative to the `position`.
    function traceIndex(Position _position, uint256 _maxDepth) internal pure returns (uint256 traceIndex_) {
        uint256 msb = depth(_position);
        assembly {
            let remaining := sub(_maxDepth, msb)
            traceIndex_ := sub(or(shl(remaining, _position), sub(shl(remaining, 1), 1)), shl(_maxDepth, 1))
        }
    }
    /// @notice Gets the position of the highest ancestor of `_position` that commits to the same
    ///         trace index.
    /// @param _position The position to get the highest ancestor of.
    /// @return ancestor_ The highest ancestor of `position` that commits to the same trace index.
    function traceAncestor(Position _position) internal pure returns (Position ancestor_) {
        // Create a field with only the lowest unset bit of `_position` set.
        Position lsb;
        assembly {
            lsb := and(not(_position), add(_position, 1))
        }
        // Find the index of the lowest unset bit within the field.
        uint256 msb = depth(lsb);
        // The highest ancestor that commits to the same trace index is the original position
        // shifted right by the index of the lowest unset bit.
        assembly {
            let a := shr(msb, _position)
            // Bound the ancestor to the minimum gindex, 1.
            ancestor_ := or(a, iszero(a))
        }
    }
    /// @notice Gets the position of the highest ancestor of `_position` that commits to the same
    ///         trace index, while still being below `_upperBoundExclusive`.
    /// @param _position The position to get the highest ancestor of.
    /// @param _upperBoundExclusive The exclusive upper depth bound, used to inform where to stop in order
    ///                             to not escape a sub-tree.
    /// @return ancestor_ The highest ancestor of `position` that commits to the same trace index.
    function traceAncestorBounded(
        Position _position,
        uint256 _upperBoundExclusive
    )
        internal
        pure
        returns (Position ancestor_)
    {
        // This function only works for positions that are below the upper bound.
        if (_position.depth() <= _upperBoundExclusive) {
            assembly {
                // Revert with `ClaimAboveSplit()`
                mstore(0x00, 0xb34b5c22)
                revert(0x1C, 0x04)
            }
        }
        // Grab the global trace ancestor.
        ancestor_ = traceAncestor(_position);
        // If the ancestor is above or at the upper bound, shift it to be below the upper bound.
        // This should be a special case that only covers positions that commit to the final leaf
        // in a sub-tree.
        if (ancestor_.depth() <= _upperBoundExclusive) {
            ancestor_ = ancestor_.rightIndex(_upperBoundExclusive + 1);
        }
    }
    /// @notice Get the move position of `_position`, which is the left child of:
    ///         1. `_position` if `_isAttack` is true.
    ///         2. `_position | 1` if `_isAttack` is false.
    /// @param _position The position to get the relative attack/defense position of.
    /// @param _isAttack Whether or not the move is an attack move.
    /// @return move_ The move position relative to `position`.
    function move(Position _position, bool _isAttack) internal pure returns (Position move_) {
        assembly {
            move_ := shl(1, or(iszero(_isAttack), _position))
        }
    }
    /// @notice Get the value of a `Position` type in the form of the underlying uint128.
    /// @param _position The position to get the value of.
    /// @return raw_ The value of the `position` as a uint128 type.
    function raw(Position _position) internal pure returns (uint128 raw_) {
        assembly {
            raw_ := _position
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IInitializable {
    function initialize() external payable;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
// Libraries
import {
    Position,
    Hash,
    GameType,
    VMStatus,
    Timestamp,
    Duration,
    Clock,
    GameId,
    Claim,
    LibGameId,
    LibClock
} from "src/dispute/lib/LibUDT.sol";
/// @notice The current status of the dispute game.
enum GameStatus {
    // The game is currently in progress, and has not been resolved.
    IN_PROGRESS,
    // The game has concluded, and the `rootClaim` was challenged successfully.
    CHALLENGER_WINS,
    // The game has concluded, and the `rootClaim` could not be contested.
    DEFENDER_WINS
}
/// @notice The game's bond distribution type. Games are expected to start in the `UNDECIDED`
///         state, and then choose either `NORMAL` or `REFUND`.
enum BondDistributionMode {
    // Bond distribution strategy has not been chosen.
    UNDECIDED,
    // Bonds should be distributed as normal.
    NORMAL,
    // Bonds should be refunded to claimants.
    REFUND
}
/// @notice Represents an L2 output root and the L2 block number at which it was generated.
/// @custom:field root The output root.
/// @custom:field l2BlockNumber The L2 block number at which the output root was generated.
struct OutputRoot {
    Hash root;
    uint256 l2BlockNumber;
}
/// @title GameTypes
/// @notice A library that defines the IDs of games that can be played.
library GameTypes {
    /// @dev A dispute game type the uses the cannon vm.
    GameType internal constant CANNON = GameType.wrap(0);
    /// @dev A permissioned dispute game type that uses the cannon vm.
    GameType internal constant PERMISSIONED_CANNON = GameType.wrap(1);
    /// @notice A dispute game type that uses the asterisc vm.
    GameType internal constant ASTERISC = GameType.wrap(2);
    /// @notice A dispute game type that uses the asterisc vm with Kona.
    GameType internal constant ASTERISC_KONA = GameType.wrap(3);
    /// @notice A dispute game type that uses OP Succinct
    GameType internal constant OP_SUCCINCT = GameType.wrap(6);
    /// @notice A dispute game type with short game duration for testing withdrawals.
    ///         Not intended for production use.
    GameType internal constant FAST = GameType.wrap(254);
    /// @notice A dispute game type that uses an alphabet vm.
    ///         Not intended for production use.
    GameType internal constant ALPHABET = GameType.wrap(255);
    /// @notice A dispute game type that uses RISC Zero's Kailua
    GameType internal constant KAILUA = GameType.wrap(1337);
}
/// @title VMStatuses
/// @notice Named type aliases for the various valid VM status bytes.
library VMStatuses {
    /// @notice The VM has executed successfully and the outcome is valid.
    VMStatus internal constant VALID = VMStatus.wrap(0);
    /// @notice The VM has executed successfully and the outcome is invalid.
    VMStatus internal constant INVALID = VMStatus.wrap(1);
    /// @notice The VM has paniced.
    VMStatus internal constant PANIC = VMStatus.wrap(2);
    /// @notice The VM execution is still in progress.
    VMStatus internal constant UNFINISHED = VMStatus.wrap(3);
}
/// @title LocalPreimageKey
/// @notice Named type aliases for local `PreimageOracle` key identifiers.
library LocalPreimageKey {
    /// @notice The identifier for the L1 head hash.
    uint256 internal constant L1_HEAD_HASH = 0x01;
    /// @notice The identifier for the starting output root.
    uint256 internal constant STARTING_OUTPUT_ROOT = 0x02;
    /// @notice The identifier for the disputed output root.
    uint256 internal constant DISPUTED_OUTPUT_ROOT = 0x03;
    /// @notice The identifier for the disputed L2 block number.
    uint256 internal constant DISPUTED_L2_BLOCK_NUMBER = 0x04;
    /// @notice The identifier for the chain ID.
    uint256 internal constant CHAIN_ID = 0x05;
}