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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "../Constants.sol";
import "../interfaces/IEOARegistry.sol";
import "../interfaces/ITransferValidator.sol";
import "./TransferPolicy.sol";
import {CreatorTokenTransferValidatorConfiguration} from "./CreatorTokenTransferValidatorConfiguration.sol";
import "@limitbreak/permit-c/PermitC.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import "@opensea/tstorish/Tstorish.sol";

/**
 * @title  CreatorTokenTransferValidator
 * @author Limit Break, Inc.
 * @notice The CreatorTokenTransferValidator contract is designed to provide a customizable and secure transfer 
 *         validation mechanism for NFT collections. This contract allows the owner of an NFT collection to configure 
 *         the transfer security level, blacklisted accounts and codehashes, whitelisted accounts and codehashes, and
 *         authorized accounts and codehashes for each collection.
 *
 * @dev    <h4>Features</h4>
 *         - Transfer security levels: Provides different levels of transfer security, 
 *           from open transfers to completely restricted transfers.
 *         - Blacklist: Allows the owner of a collection to blacklist specific operator addresses or codehashes
 *           from executing transfers on behalf of others.
 *         - Whitelist: Allows the owner of a collection to whitelist specific operator addresses or codehashes
 *           permitted to execute transfers on behalf of others or send/receive tokens when otherwise disabled by 
 *           security policy.
 *         - Authorizers: Allows the owner of a collection to enable authorizer contracts, that can perform 
 *           authorization-based filtering of transfers.
 *
 * @dev    <h4>Benefits</h4>
 *         - Enhanced security: Allows creators to have more control over their NFT collections, ensuring the safety 
 *           and integrity of their assets.
 *         - Flexibility: Provides collection owners the ability to customize transfer rules as per their requirements.
 *         - Compliance: Facilitates compliance with regulations by enabling creators to restrict transfers based on 
 *           specific criteria.
 *
 * @dev    <h4>Intended Usage</h4>
 *         - The CreatorTokenTransferValidatorV3 contract is intended to be used by NFT collection owners to manage and 
 *           enforce transfer policies. This contract is integrated with the following varations of creator token 
 *           NFT contracts to validate transfers according to the defined security policies.
 *
 *           - ERC721-C:   Creator token implenting OpenZeppelin's ERC-721 standard.
 *           - ERC721-AC:  Creator token implenting Azuki's ERC-721A standard.
 *           - ERC721-CW:  Creator token implementing OpenZeppelin's ERC-721 standard with opt-in staking to 
 *                         wrap/upgrade a pre-existing ERC-721 collection.
 *           - ERC721-ACW: Creator token implementing Azuki's ERC721-A standard with opt-in staking to 
 *                         wrap/upgrade a pre-existing ERC-721 collection.
 *           - ERC1155-C:  Creator token implenting OpenZeppelin's ERC-1155 standard.
 *           - ERC1155-CW: Creator token implementing OpenZeppelin's ERC-1155 standard with opt-in staking to 
 *                         wrap/upgrade a pre-existing ERC-1155 collection.
 *
 *          <h4>Transfer Security Levels</h4>
 *          - Recommended: Recommended defaults are same as Level 3 (Whitelisting with OTC Enabled).
 *            - Caller Constraints: OperatorWhitelistEnableOTC
 *            - Receiver Constraints: None
 *          - Level 1: No transfer restrictions.
 *            - Caller Constraints: None
 *            - Receiver Constraints: None
 *          - Level 2: Only non-blacklisted operators can initiate transfers, over-the-counter (OTC) trading enabled.
 *            - Caller Constraints: OperatorBlacklistEnableOTC
 *            - Receiver Constraints: None
 *          - Level 3: Only whitelisted accounts can initiate transfers, over-the-counter (OTC) trading enabled.
 *            - Caller Constraints: OperatorWhitelistEnableOTC
 *            - Receiver Constraints: None
 *          - Level 4: Only whitelisted accounts can initiate transfers, over-the-counter (OTC) trading disabled.
 *            - Caller Constraints: OperatorWhitelistDisableOTC
 *            - Receiver Constraints: None
 *          - Level 5: Only whitelisted accounts can initiate transfers, over-the-counter (OTC) trading enabled. 
 *                     Transfers to contracts with code are not allowed, unless present on the whitelist.
 *            - Caller Constraints: OperatorWhitelistEnableOTC
 *            - Receiver Constraints: NoCode
 *          - Level 6: Only whitelisted accounts can initiate transfers, over-the-counter (OTC) trading enabled. 
 *                     Transfers are allowed only to Externally Owned Accounts (EOAs), unless present on the whitelist.
 *            - Caller Constraints: OperatorWhitelistEnableOTC
 *            - Receiver Constraints: EOA
 *          - Level 7: Only whitelisted accounts can initiate transfers, over-the-counter (OTC) trading disabled. 
 *                     Transfers to contracts with code are not allowed, unless present on the whitelist.
 *            - Caller Constraints: OperatorWhitelistDisableOTC
 *            - Receiver Constraints: NoCode
 *          - Level 8: Only whitelisted accounts can initiate transfers, over-the-counter (OTC) trading disabled. 
 *                     Transfers are allowed only to Externally Owned Accounts (EOAs), unless present on the whitelist.
 *            - Caller Constraints: OperatorWhitelistDisableOTC
 *            - Receiver Constraints: EOA
 */
contract CreatorTokenTransferValidator is IEOARegistry, ITransferValidator, ERC165, Tstorish, PermitC {
    using EnumerableSet for EnumerableSet.AddressSet;
    using EnumerableSet for EnumerableSet.Bytes32Set;

    /*************************************************************************/
    /*                             CUSTOM ERRORS                             */
    /*************************************************************************/

    /// @dev Thrown when attempting to set a list id that does not exist.
    error CreatorTokenTransferValidator__ListDoesNotExist();

    /// @dev Thrown when attempting to transfer the ownership of a list to the zero address.
    error CreatorTokenTransferValidator__ListOwnershipCannotBeTransferredToZeroAddress();

    /// @dev Thrown when attempting to call a function that requires the caller to be the list owner.
    error CreatorTokenTransferValidator__CallerDoesNotOwnList();

    /// @dev Thrown when validating a transfer for a collection using whitelists and the operator is not on the whitelist.
    error CreatorTokenTransferValidator__CallerMustBeWhitelisted();

    /// @dev Thrown when authorizing a transfer for a collection using authorizers and the msg.sender is not in the authorizer list.
    error CreatorTokenTransferValidator__CallerMustBeAnAuthorizer();

    /// @dev Thrown when attempting to call a function that requires owner or default admin role for a collection that the caller does not have.
    error CreatorTokenTransferValidator__CallerMustHaveElevatedPermissionsForSpecifiedNFT();

    /// @dev Thrown when constructor args are not valid
    error CreatorTokenTransferValidator__InvalidConstructorArgs();

    /// @dev Thrown when setting the transfer security level to an invalid value.
    error CreatorTokenTransferValidator__InvalidTransferSecurityLevel();

    /// @dev Thrown when validating a transfer for a collection using blacklists and the operator is on the blacklist.
    error CreatorTokenTransferValidator__OperatorIsBlacklisted();

    /// @dev Thrown when validating a transfer for a collection that does not allow receiver to have code and the receiver has code.
    error CreatorTokenTransferValidator__ReceiverMustNotHaveDeployedCode();

    /// @dev Thrown when validating a transfer for a collection that requires receivers be verified EOAs and the receiver is not verified.
    error CreatorTokenTransferValidator__ReceiverProofOfEOASignatureUnverified();

    /// @dev Thrown when a frozen account is the receiver of a transfer
    error CreatorTokenTransferValidator__ReceiverAccountIsFrozen();

    /// @dev Thrown when a frozen account is the sender of a transfer
    error CreatorTokenTransferValidator__SenderAccountIsFrozen();

    /// @dev Thrown when validating a transfer for a collection that is in soulbound token mode.
    error CreatorTokenTransferValidator__TokenIsSoulbound();

    /// @dev Thrown when an authorizer attempts to set a wildcard authorized operator on collections that don't allow wildcards
    error CreatorTokenTransferValidator__WildcardOperatorsCannotBeAuthorizedForCollection();

    /// @dev Thrown when attempting to set a authorized operator when authorization mode is disabled.
    error CreatorTokenTransferValidator__AuthorizationDisabledForCollection();

    /// @dev Thrown when attempting to validate a permitted transfer where the permit type does not match the collection-defined token type.
    error CreatorTokenTransferValidator__TokenTypesDoNotMatch();

    /*************************************************************************/
    /*                                EVENTS                                 */
    /*************************************************************************/

    /// @dev Emitted when a new list is created.
    event CreatedList(uint256 indexed id, string name);

    /// @dev Emitted when a list is applied to a collection.
    event AppliedListToCollection(address indexed collection, uint120 indexed id);

    /// @dev Emitted when the ownership of a list is transferred to a new owner.
    event ReassignedListOwnership(uint256 indexed id, address indexed newOwner);

    /// @dev Emitted when an account is added to the list of frozen accounts for a collection.
    event AccountFrozenForCollection(address indexed collection, address indexed account);

    /// @dev Emitted when an account is removed from the list of frozen accounts for a collection.
    event AccountUnfrozenForCollection(address indexed collection, address indexed account);

    /// @dev Emitted when an address is added to a list.
    event AddedAccountToList(uint8 indexed kind, uint256 indexed id, address indexed account);

    /// @dev Emitted when a codehash is added to a list.
    event AddedCodeHashToList(uint8 indexed kind, uint256 indexed id, bytes32 indexed codehash);

    /// @dev Emitted when an address is removed from a list.
    event RemovedAccountFromList(uint8 indexed kind, uint256 indexed id, address indexed account);

    /// @dev Emitted when a codehash is removed from a list.
    event RemovedCodeHashFromList(uint8 indexed kind, uint256 indexed id, bytes32 indexed codehash);

    /// @dev Emitted when the security level for a collection is updated.
    event SetTransferSecurityLevel(address indexed collection, uint8 level);

    /// @dev Emitted when a collection updates its authorization mode.
    event SetAuthorizationModeEnabled(address indexed collection, bool disabled, bool authorizersCannotSetWildcardOperators);

    /// @dev Emitted when a collection turns account freezing on or off.
    event SetAccountFreezingModeEnabled(address indexed collection, bool enabled);

    /// @dev Emitted when a collection's token type is updated.
    event SetTokenType(address indexed collection, uint16 tokenType);

    /*************************************************************************/
    /*                                STRUCTS                                */
    /*************************************************************************/

    /**
     * @dev This struct is internally for the storage of account and codehash lists.
     */
    struct List {
        EnumerableSet.AddressSet enumerableAccounts;
        EnumerableSet.Bytes32Set enumerableCodehashes;
        mapping (address => bool) nonEnumerableAccounts;
        mapping (bytes32 => bool) nonEnumerableCodehashes;
    }

    /**
     * @dev This struct is internally for the storage of account lists.
     */
    struct AccountList {
        EnumerableSet.AddressSet enumerableAccounts;
        mapping (address => bool) nonEnumerableAccounts;
    }

    /*************************************************************************/
    /*                               CONSTANTS                               */
    /*************************************************************************/

    /// @dev Immutable lookup table for constant gas determination of caller constraints by security level.
    /// @dev Created during contract construction using defined constants.
    uint256 private immutable _callerConstraintsLookup;

    /// @dev Immutable lookup table for constant gas determination of receiver constraints by security level.
    /// @dev Created during contract construction using defined constants.
    uint256 private immutable _receiverConstraintsLookup;

    /// @dev The address of the EOA Registry to use to validate an account is a verified EOA.
    address private immutable _eoaRegistry;

    /// @dev The legacy Creator Token Transfer Validator Interface
    bytes4 private constant LEGACY_TRANSFER_VALIDATOR_INTERFACE_ID = 0x00000000;

    /// @dev The default admin role value for contracts that implement access control.
    bytes32 private constant DEFAULT_ACCESS_CONTROL_ADMIN_ROLE = 0x00;
    /// @dev Value representing a zero value code hash.
    bytes32 private constant BYTES32_ZERO = 0x0000000000000000000000000000000000000000000000000000000000000000;

    address private constant WILDCARD_OPERATOR_ADDRESS = address(0x01);

    uint16 private constant DEFAULT_TOKEN_TYPE = 0;

    /*************************************************************************/
    /*                                STORAGE                                */
    /*************************************************************************/

    /// @notice Keeps track of the most recently created list id.
    uint120 public lastListId;

    /// @notice Mapping of list ids to list owners
    mapping (uint120 => address) public listOwners;

    /// @dev Mapping of collection addresses to their security policy settings
    mapping (address => CollectionSecurityPolicyV3) internal collectionSecurityPolicies;

    /// @dev Mapping of list ids to blacklist settings
    mapping (uint120 => List) internal blacklists;

    /// @dev Mapping of list ids to whitelist settings
    mapping (uint120 => List) internal whitelists;

    /// @dev Mapping of list ids to authorizers
    mapping (uint120 => List) internal authorizers;

    /// @dev Mapping of collections to accounts that are frozen for those collections
    mapping (address => AccountList) internal frozenAccounts;

    constructor(
        address defaultOwner,
        address eoaRegistry_,
        string memory name,
        string memory version,
        address validatorConfiguration
    ) 
    Tstorish()
    PermitC(
        name,
        version,
        defaultOwner,
        CreatorTokenTransferValidatorConfiguration(validatorConfiguration).getNativeValueToCheckPauseState()
    ) {
        if (defaultOwner == address(0) || eoaRegistry_ == address(0)) {
            revert CreatorTokenTransferValidator__InvalidConstructorArgs();
        }

        _createDefaultList(defaultOwner);

        _eoaRegistry = eoaRegistry_;

        _callerConstraintsLookup = _constructCallerConstraintsTable();

        _receiverConstraintsLookup = _constructReceiverConstraintsTable();
    }

    /**
     * @dev This function is only called during contract construction to create the default list.
     */
    function _createDefaultList(address defaultOwner) internal {
        uint120 id = 0;

        listOwners[id] = defaultOwner;

        emit CreatedList(id, "DEFAULT LIST");
        emit ReassignedListOwnership(id, defaultOwner);
    }

    /**
     * @dev This function is only called during contract construction to create the caller constraints
     * @dev lookup table.
     */
    function _constructCallerConstraintsTable() internal pure returns (uint256) {
        return 
        (CALLER_CONSTRAINTS_OPERATOR_WHITELIST_ENABLE_OTC << (TRANSFER_SECURITY_LEVEL_RECOMMENDED << 3))
            | (CALLER_CONSTRAINTS_NONE << (TRANSFER_SECURITY_LEVEL_ONE << 3))
            | (CALLER_CONSTRAINTS_OPERATOR_BLACKLIST_ENABLE_OTC << (TRANSFER_SECURITY_LEVEL_TWO << 3))
            | (CALLER_CONSTRAINTS_OPERATOR_WHITELIST_ENABLE_OTC << (TRANSFER_SECURITY_LEVEL_THREE << 3))
            | (CALLER_CONSTRAINTS_OPERATOR_WHITELIST_DISABLE_OTC << (TRANSFER_SECURITY_LEVEL_FOUR << 3))
            | (CALLER_CONSTRAINTS_OPERATOR_WHITELIST_ENABLE_OTC << (TRANSFER_SECURITY_LEVEL_FIVE << 3))
            | (CALLER_CONSTRAINTS_OPERATOR_WHITELIST_ENABLE_OTC << (TRANSFER_SECURITY_LEVEL_SIX << 3))
            | (CALLER_CONSTRAINTS_OPERATOR_WHITELIST_DISABLE_OTC << (TRANSFER_SECURITY_LEVEL_SEVEN << 3))
            | (CALLER_CONSTRAINTS_OPERATOR_WHITELIST_DISABLE_OTC << (TRANSFER_SECURITY_LEVEL_EIGHT << 3))
            | (CALLER_CONSTRAINTS_SBT << (TRANSFER_SECURITY_LEVEL_NINE << 3));
    }

    /**
     * @dev This function is only called during contract construction to create the receiver constraints
     * @dev lookup table.
     */
    function _constructReceiverConstraintsTable() internal pure returns (uint256) {
        return 
        (RECEIVER_CONSTRAINTS_NONE << (TRANSFER_SECURITY_LEVEL_RECOMMENDED << 3))
            | (RECEIVER_CONSTRAINTS_NONE << (TRANSFER_SECURITY_LEVEL_ONE << 3))
            | (RECEIVER_CONSTRAINTS_NONE << (TRANSFER_SECURITY_LEVEL_TWO << 3))
            | (RECEIVER_CONSTRAINTS_NONE << (TRANSFER_SECURITY_LEVEL_THREE << 3))
            | (RECEIVER_CONSTRAINTS_NONE << (TRANSFER_SECURITY_LEVEL_FOUR << 3))
            | (RECEIVER_CONSTRAINTS_NO_CODE << (TRANSFER_SECURITY_LEVEL_FIVE << 3))
            | (RECEIVER_CONSTRAINTS_EOA << (TRANSFER_SECURITY_LEVEL_SIX << 3))
            | (RECEIVER_CONSTRAINTS_NO_CODE << (TRANSFER_SECURITY_LEVEL_SEVEN << 3))
            | (RECEIVER_CONSTRAINTS_EOA << (TRANSFER_SECURITY_LEVEL_EIGHT << 3))
            | (RECEIVER_CONSTRAINTS_SBT << (TRANSFER_SECURITY_LEVEL_NINE << 3));
    }

    /*************************************************************************/
    /*                               MODIFIERS                               */
    /*************************************************************************/

    /**
     * @dev This modifier restricts a function call to the owner of the list `id`.
     * @dev Throws when the caller is not the list owner.
     */
    modifier onlyListOwner(uint120 id) {
        _requireCallerOwnsList(id);
        _;
    }

    /*************************************************************************/
    /*                          APPLY TRANSFER POLICIES                      */
    /*************************************************************************/

    /**
     * @notice Apply the collection transfer policy to a transfer operation of a creator token.
     *
     * @dev If the caller is self (Permit-C Processor) it means we have already applied operator validation in the 
     *      _beforeTransferFrom callback.  In this case, the security policy was already applied and the operator
     *      that used the Permit-C processor passed the security policy check and transfer can be safely allowed.
     *
     * @dev The order of checking whitelisted accounts, authorized operator check and whitelisted codehashes
     *      is very deliberate.  The order of operations is determined by the most frequently used settings that are
     *      expected in the wild.
     *
     * @dev Throws when the collection has enabled account freezing mode and either the `from` or `to` addresses
     *      are on the list of frozen accounts for the collection.
     * @dev Throws when the collection is set to Level 9 - Soulbound Token.
     * @dev Throws when the receiver has deployed code and isn't whitelisted, if ReceiverConstraints.NoCode is set
     *      and the transfer is not approved by an authorizer for the collection.
     * @dev Throws when the receiver has never verified a signature to prove they are an EOA and the receiver
     *      isn't whitelisted, if the ReceiverConstraints.EOA is set and the transfer is not approved by an 
     *      authorizer for the collection..
     * @dev Throws when `msg.sender` is blacklisted, if CallerConstraints.OperatorBlacklistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when `msg.sender` isn't whitelisted, if CallerConstraints.OperatorWhitelistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when neither `msg.sender` nor `from` are whitelisted, if 
     *      CallerConstraints.OperatorWhitelistDisableOTC is set and the transfer 
     *      is not approved by an authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Transfer is allowed or denied based on the applied transfer policy.
     *
     * @param caller      The address initiating the transfer.
     * @param from        The address of the token owner.
     * @param to          The address of the token receiver.
     */
    function validateTransfer(address caller, address from, address to) public view {
        (bytes4 errorSelector,) = _validateTransfer(_callerAuthorizedCheckCollection, msg.sender, caller, from, to, 0);
        if (errorSelector != SELECTOR_NO_ERROR) {
            _revertCustomErrorSelectorAsm(errorSelector);
        }
    }

    /**
     * @notice Apply the collection transfer policy to a transfer operation of a creator token.
     *
     * @dev If the caller is self (Permit-C Processor) it means we have already applied operator validation in the 
     *      _beforeTransferFrom callback.  In this case, the security policy was already applied and the operator
     *      that used the Permit-C processor passed the security policy check and transfer can be safely allowed.
     *
     * @dev The order of checking whitelisted accounts, authorized operator check and whitelisted codehashes
     *      is very deliberate.  The order of operations is determined by the most frequently used settings that are
     *      expected in the wild.
     *
     * @dev Throws when the collection has enabled account freezing mode and either the `from` or `to` addresses
     *      are on the list of frozen accounts for the collection.
     * @dev Throws when the collection is set to Level 9 - Soulbound Token.
     * @dev Throws when the receiver has deployed code and isn't whitelisted, if ReceiverConstraints.NoCode is set
     *      and the transfer is not approved by an authorizer for the collection.
     * @dev Throws when the receiver has never verified a signature to prove they are an EOA and the receiver
     *      isn't whitelisted, if the ReceiverConstraints.EOA is set and the transfer is not approved by an 
     *      authorizer for the collection..
     * @dev Throws when `msg.sender` is blacklisted, if CallerConstraints.OperatorBlacklistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when `msg.sender` isn't whitelisted, if CallerConstraints.OperatorWhitelistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when neither `msg.sender` nor `from` are whitelisted, if 
     *      CallerConstraints.OperatorWhitelistDisableOTC is set and the transfer 
     *      is not approved by an authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Transfer is allowed or denied based on the applied transfer policy.
     *
     * @param caller      The address initiating the transfer.
     * @param from        The address of the token owner.
     * @param to          The address of the token receiver.
     * @param tokenId     The token id being transferred.
     */
    function validateTransfer(address caller, address from, address to, uint256 tokenId) public view {
        (bytes4 errorSelector,) = _validateTransfer(_callerAuthorizedCheckToken, msg.sender, caller, from, to, tokenId);
        if (errorSelector != SELECTOR_NO_ERROR) {
            _revertCustomErrorSelectorAsm(errorSelector);
        }
    }

    /**
     * @notice Apply the collection transfer policy to a transfer operation of a creator token.
     *
     * @dev If the caller is self (Permit-C Processor) it means we have already applied operator validation in the 
     *      _beforeTransferFrom callback.  In this case, the security policy was already applied and the operator
     *      that used the Permit-C processor passed the security policy check and transfer can be safely allowed.
     *
     * @dev The order of checking whitelisted accounts, authorized operator check and whitelisted codehashes
     *      is very deliberate.  The order of operations is determined by the most frequently used settings that are
     *      expected in the wild.
     *
     * @dev Throws when the collection has enabled account freezing mode and either the `from` or `to` addresses
     *      are on the list of frozen accounts for the collection.
     * @dev Throws when the collection is set to Level 9 - Soulbound Token.
     * @dev Throws when the receiver has deployed code and isn't whitelisted, if ReceiverConstraints.NoCode is set
     *      and the transfer is not approved by an authorizer for the collection.
     * @dev Throws when the receiver has never verified a signature to prove they are an EOA and the receiver
     *      isn't whitelisted, if the ReceiverConstraints.EOA is set and the transfer is not approved by an 
     *      authorizer for the collection..
     * @dev Throws when `msg.sender` is blacklisted, if CallerConstraints.OperatorBlacklistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when `msg.sender` isn't whitelisted, if CallerConstraints.OperatorWhitelistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when neither `msg.sender` nor `from` are whitelisted, if 
     *      CallerConstraints.OperatorWhitelistDisableOTC is set and the transfer 
     *      is not approved by an authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Transfer is allowed or denied based on the applied transfer policy.
     *
     * @param caller      The address initiating the transfer.
     * @param from        The address of the token owner.
     * @param to          The address of the token receiver.
     * @param tokenId     The token id being transferred.
     */
    function validateTransfer(address caller, address from, address to, uint256 tokenId, uint256 /*amount*/) external {
        validateTransfer(caller, from, to, tokenId);
    }

    /**
     * @notice Apply the collection transfer policy to a transfer operation of a creator token.
     *
     * @dev If the caller is self (Permit-C Processor) it means we have already applied operator validation in the 
     *      _beforeTransferFrom callback.  In this case, the security policy was already applied and the operator
     *      that used the Permit-C processor passed the security policy check and transfer can be safely allowed.
     *
     * @dev The order of checking whitelisted accounts, authorized operator check and whitelisted codehashes
     *      is very deliberate.  The order of operations is determined by the most frequently used settings that are
     *      expected in the wild.
     *
     * @dev Throws when the collection has enabled account freezing mode and either the `from` or `to` addresses
     *      are on the list of frozen accounts for the collection.
     * @dev Throws when the collection is set to Level 9 - Soulbound Token.
     * @dev Throws when the receiver has deployed code and isn't whitelisted, if ReceiverConstraints.NoCode is set
     *      and the transfer is not approved by an authorizer for the collection.
     * @dev Throws when the receiver has never verified a signature to prove they are an EOA and the receiver
     *      isn't whitelisted, if the ReceiverConstraints.EOA is set and the transfer is not approved by an 
     *      authorizer for the collection..
     * @dev Throws when `msg.sender` is blacklisted, if CallerConstraints.OperatorBlacklistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when `msg.sender` isn't whitelisted, if CallerConstraints.OperatorWhitelistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when neither `msg.sender` nor `from` are whitelisted, if 
     *      CallerConstraints.OperatorWhitelistDisableOTC is set and the transfer 
     *      is not approved by an authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Transfer is allowed or denied based on the applied transfer policy.
     *
     * @param caller      The address initiating the transfer.
     * @param from        The address of the token owner.
     * @param to          The address of the token receiver.
     */
    function applyCollectionTransferPolicy(address caller, address from, address to) external view {
        validateTransfer(caller, from, to);
    }

    /**
     * @notice Returns the caller and receiver constraints for the specified transfer security level.
     * 
     * @param level The transfer security level to return the caller and receiver constraints for.
     * 
     * @return callerConstraints    The `CallerConstraints` value for the level.
     * @return receiverConstraints The `ReceiverConstraints` value for the level.
     */
    function transferSecurityPolicies(
        uint256 level
    ) public view returns (uint256 callerConstraints, uint256 receiverConstraints) {
        callerConstraints = uint8((_callerConstraintsLookup >> (level << 3)));
        receiverConstraints = uint8((_receiverConstraintsLookup >> (level << 3)));
    }

    /**
     * @notice Sets an operator for an authorized transfer that skips transfer security level
     *         validation for caller and receiver constraints.
     * 
     * @dev    An authorizer *MUST* clear the authorization with a call to `afterAuthorizedTransfer`
     *         to prevent unauthorized transfers of the token.
     * 
     * @dev    Throws when authorization mode is disabled for the collection.
     * @dev    Throws when using the wildcard operator address and the collection does not allow
     *         for wildcard authorized operators.
     * @dev    Throws when the caller is not an allowed authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The `operator` is stored as an authorized operator for transfers.
     * 
     * @param operator  The address of the operator to set as authorized for transfers.
     * @param token     The address of the token to authorize.
     * @param tokenId   The token id to set the authorized operator for.
     */
    function beforeAuthorizedTransfer(address operator, address token, uint256 tokenId) external {
        _setOperatorInTransientStorage(operator, token, tokenId, false);
    }

    /**
     * @notice Clears the authorized operator for a token to prevent additional transfers that
     *         do not conform to the transfer security level for the token.
     * 
     * @dev    Throws when authorization mode is disabled for the collection.
     * @dev    Throws when using the wildcard operator address and the collection does not allow
     *         for wildcard authorized operators.
     * @dev    Throws when the caller is not an allowed authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The authorized operator for the token is cleared from storage.
     * 
     * @param token     The address of the token to authorize.
     * @param tokenId   The token id to set the authorized operator for.
     */
    function afterAuthorizedTransfer(address token, uint256 tokenId) public {
        _setOperatorInTransientStorage(address(uint160(uint256(BYTES32_ZERO))), token, tokenId, false);
    }

    /**
     * @notice Sets an operator for an authorized transfer that skips transfer security level
     *         validation for caller and receiver constraints.
     * @notice This overload of `beforeAuthorizedTransfer` defaults to a tokenId of 0.
     * 
     * @dev    An authorizer *MUST* clear the authorization with a call to `afterAuthorizedTransfer`
     *         to prevent unauthorized transfers of the token.
     * 
     * @dev    Throws when authorization mode is disabled for the collection.
     * @dev    Throws when using the wildcard operator address and the collection does not allow
     *         for wildcard authorized operators.
     * @dev    Throws when the caller is not an allowed authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The `operator` is stored as an authorized operator for transfers.
     * 
     * @param operator  The address of the operator to set as authorized for transfers.
     * @param token     The address of the token to authorize.
     */
    function beforeAuthorizedTransfer(address operator, address token) external {
        _setOperatorInTransientStorage(operator, token, 0, true);
    }

    /**
     * @notice Clears the authorized operator for a token to prevent additional transfers that
     *         do not conform to the transfer security level for the token.
     * @notice This overload of `afterAuthorizedTransfer` defaults to a tokenId of 0.
     * 
     * @dev    Throws when authorization mode is disabled for the collection.
     * @dev    Throws when using the wildcard operator address and the collection does not allow
     *         for wildcard authorized operators.
     * @dev    Throws when the caller is not an allowed authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The authorized operator for the token is cleared from storage.
     * 
     * @param token     The address of the token to authorize.
     */
    function afterAuthorizedTransfer(address token) external {
        afterAuthorizedTransfer(token, 0);
    }

    /**
     * @notice Sets the wildcard operator to authorize any operator to transfer a token while
     *         skipping transfer security level validation for caller and receiver constraints.
     * 
     * @dev    An authorizer *MUST* clear the authorization with a call to `afterAuthorizedTransfer`
     *         to prevent unauthorized transfers of the token.
     * 
     * @dev    Throws when authorization mode is disabled for the collection.
     * @dev    Throws when the collection does not allow for wildcard authorized operators.
     * @dev    Throws when the caller is not an allowed authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The wildcard operator is stored as an authorized operator for transfers.
     * 
     * @param token     The address of the token to authorize.
     * @param tokenId   The token id to set the authorized operator for.
     */
    function beforeAuthorizedTransfer(address token, uint256 tokenId) external {
        _setOperatorInTransientStorage(WILDCARD_OPERATOR_ADDRESS, token, tokenId, false);
    }

    /**
     * @notice Sets the wildcard operator to authorize any operator to transfer a token while
     *         skipping transfer security level validation for caller and receiver constraints.
     * 
     * @dev    An authorizer *MUST* clear the authorization with a call to `afterAuthorizedTransfer`
     *         to prevent unauthorized transfers of the token.
     * 
     * @dev    Throws when authorization mode is disabled for the collection.
     * @dev    Throws when the collection does not allow for wildcard authorized operators.
     * @dev    Throws when the caller is not an allowed authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The wildcard operator is stored as an authorized operator for transfers.
     * 
     * @param token     The address of the token to authorize.
     * @param tokenId   The token id to set the authorized operator for.
     */
    function beforeAuthorizedTransferWithAmount(address token, uint256 tokenId, uint256 /*amount*/) external {
        _setOperatorInTransientStorage(WILDCARD_OPERATOR_ADDRESS, token, tokenId, false);
    }

    /**
     * @notice Clears the authorized operator for a token to prevent additional transfers that
     *         do not conform to the transfer security level for the token.
     * 
     * @dev    Throws when authorization mode is disabled for the collection.
     * @dev    Throws when using the wildcard operator address and the collection does not allow
     *         for wildcard authorized operators.
     * @dev    Throws when the caller is not an allowed authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The authorized operator for the token is cleared from storage.
     * 
     * @param token     The address of the token to authorize.
     * @param tokenId   The token id to set the authorized operator for.
     */
    function afterAuthorizedTransferWithAmount(address token, uint256 tokenId) external {
        afterAuthorizedTransfer(token, tokenId);
    }

    /*************************************************************************/
    /*                              LIST MANAGEMENT                          */
    /*************************************************************************/

    /**
     * @notice Creates a new list id.  The list id is a handle to allow editing of blacklisted and whitelisted accounts
     *         and codehashes.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. A new list with the specified name is created.
     *      2. The caller is set as the owner of the new list.
     *      3. A `CreatedList` event is emitted.
     *      4. A `ReassignedListOwnership` event is emitted.
     *
     * @param  name The name of the new list.
     * @return id   The id of the new list.
     */
    function createList(string calldata name) public returns (uint120 id) {
        unchecked {
            id = ++lastListId;
        }

        listOwners[id] = msg.sender;

        emit CreatedList(id, name);
        emit ReassignedListOwnership(id, msg.sender);
    }

    /**
     * @notice Creates a new list id, and copies all blacklisted and whitelisted accounts and codehashes from the
     *         specified source list.
     *
     * @dev    <h4>Postconditions:</h4>
     *         1. A new list with the specified name is created.
     *         2. The caller is set as the owner of the new list.
     *         3. A `CreatedList` event is emitted.
     *         4. A `ReassignedListOwnership` event is emitted.
     *         5. All blacklisted and whitelisted accounts and codehashes from the specified source list are copied
     *            to the new list.
     *         6. An `AddedAccountToList` event is emitted for each blacklisted and whitelisted account copied.
     *         7. An `AddedCodeHashToList` event is emitted for each blacklisted and whitelisted codehash copied.
     *
     * @param  name         The name of the new list.
     * @param  sourceListId The id of the source list to copy from.
     * @return id           The id of the new list.
     */
    function createListCopy(string calldata name, uint120 sourceListId) external returns (uint120 id) {
        unchecked {
            id = ++lastListId;
        }

        unchecked {
            if (sourceListId > id - 1) {
                revert CreatorTokenTransferValidator__ListDoesNotExist();
            }
        }

        listOwners[id] = msg.sender;

        emit CreatedList(id, name);
        emit ReassignedListOwnership(id, msg.sender);

        List storage sourceBlacklist = blacklists[sourceListId];
        List storage sourceWhitelist = whitelists[sourceListId];
        List storage sourceAuthorizers = authorizers[sourceListId];
        List storage targetBlacklist = blacklists[id];
        List storage targetWhitelist = whitelists[id];
        List storage targetAuthorizers = authorizers[id];

        _copyAddressSet(LIST_TYPE_BLACKLIST, id, sourceBlacklist, targetBlacklist);
        _copyBytes32Set(LIST_TYPE_BLACKLIST, id, sourceBlacklist, targetBlacklist);
        _copyAddressSet(LIST_TYPE_WHITELIST, id, sourceWhitelist, targetWhitelist);
        _copyBytes32Set(LIST_TYPE_WHITELIST, id, sourceWhitelist, targetWhitelist);
        _copyAddressSet(LIST_TYPE_AUTHORIZERS, id, sourceAuthorizers, targetAuthorizers);
        _copyBytes32Set(LIST_TYPE_AUTHORIZERS, id, sourceAuthorizers, targetAuthorizers);
    }

    /**
     * @notice Transfer ownership of a list to a new owner.
     *
     * @dev Throws when the new owner is the zero address.
     * @dev Throws when the caller does not own the specified list.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The list ownership is transferred to the new owner.
     *      2. A `ReassignedListOwnership` event is emitted.
     *
     * @param id       The id of the list.
     * @param newOwner The address of the new owner.
     */
    function reassignOwnershipOfList(uint120 id, address newOwner) public {
        if(newOwner == address(0)) {
            revert CreatorTokenTransferValidator__ListOwnershipCannotBeTransferredToZeroAddress();
        }

        _reassignOwnershipOfList(id, newOwner);
    }

    /**
     * @notice Renounce the ownership of a list, rendering the list immutable.
     *
     * @dev Throws when the caller does not own the specified list.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The ownership of the specified list is renounced.
     *      2. A `ReassignedListOwnership` event is emitted.
     *
     * @param id The id of the list.
     */
    function renounceOwnershipOfList(uint120 id) public {
        _reassignOwnershipOfList(id, address(0));
    }

    /**
     * @notice Set the transfer security level, authorization mode and account freezing mode settings of a collection.
     *
     * @dev Throws when the caller is neither collection contract, nor the owner or admin of the specified collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The transfer security level of the specified collection is set to the new value.
     *      2. The authorization mode setting of the specified collection is set to the new value.
     *      3. The authorization wildcard operator mode setting of the specified collection is set to the new value.
     *      4. The account freezing mode setting of the specified collection is set to the new value.
     *      5. A `SetTransferSecurityLevel` event is emitted.
     *      6. A `SetAuthorizationModeEnabled` event is emitted.
     *      7. A `SetAccountFreezingModeEnabled` event is emitted.
     *
     * @param collection                 The address of the collection.
     * @param level                      The new transfer security level to apply.
     * @param disableAuthorizationMode   Flag if the collection allows for authorizer mode.
     * @param disableWildcardOperators   Flag if the authorizer can set wildcard operators.
     * @param enableAccountFreezingMode  Flag if the collection is using account freezing.
     */
    function setTransferSecurityLevelOfCollection(
        address collection, 
        uint8 level,
        bool disableAuthorizationMode,
        bool disableWildcardOperators,
        bool enableAccountFreezingMode) external {

        if (level > TRANSFER_SECURITY_LEVEL_NINE) {
            revert CreatorTokenTransferValidator__InvalidTransferSecurityLevel();
        }

        _requireCallerIsNFTOrContractOwnerOrAdmin(collection);
        collectionSecurityPolicies[collection].transferSecurityLevel = level;
        collectionSecurityPolicies[collection].disableAuthorizationMode = disableAuthorizationMode;
        collectionSecurityPolicies[collection].authorizersCannotSetWildcardOperators = disableWildcardOperators;
        collectionSecurityPolicies[collection].enableAccountFreezingMode = enableAccountFreezingMode;
        emit SetTransferSecurityLevel(collection, level);
        emit SetAuthorizationModeEnabled(collection, disableAuthorizationMode, disableWildcardOperators);
        emit SetAccountFreezingModeEnabled(collection, enableAccountFreezingMode);
    }

    /**
     * @notice Set the token type setting of a collection.
     *
     * @dev Throws when the caller is neither collection contract, nor the owner or admin of the specified collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The token type of the specified collection is set to the new value.
     *      2. A `SetTokenType` event is emitted.
     *
     * @param collection  The address of the collection.
     * @param tokenType   The new transfer security level to apply.
     */
    function setTokenTypeOfCollection(
        address collection, 
        uint16 tokenType
    ) external {
        _requireCallerIsNFTOrContractOwnerOrAdmin(collection);
        collectionSecurityPolicies[collection].tokenType = tokenType;
        emit SetTokenType(collection, tokenType);
    }

    /**
     * @notice Applies the specified list to a collection.
     * 
     * @dev Throws when the caller is neither collection contract, nor the owner or admin of the specified collection.
     * @dev Throws when the specified list id does not exist.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The list of the specified collection is set to the new value.
     *      2. An `AppliedListToCollection` event is emitted.
     *
     * @param collection The address of the collection.
     * @param id         The id of the operator whitelist.
     */
    function applyListToCollection(address collection, uint120 id) public {
        _requireCallerIsNFTOrContractOwnerOrAdmin(collection);

        if (id > lastListId) {
            revert CreatorTokenTransferValidator__ListDoesNotExist();
        }

        collectionSecurityPolicies[collection].listId = id;
        emit AppliedListToCollection(collection, id);
    }

    /**
     * @notice Adds accounts to the frozen accounts list of a collection.
     * 
     * @dev Throws when the caller is neither collection contract, nor the owner or admin of the specified collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The accounts are added to the list of frozen accounts for a collection.
     *      2. A `AccountFrozenForCollection` event is emitted for each account added to the list.
     *
     * @param collection        The address of the collection.
     * @param accountsToFreeze  The list of accounts to added to frozen accounts.
     */
    function freezeAccountsForCollection(address collection, address[] calldata accountsToFreeze) external {
        _requireCallerIsNFTOrContractOwnerOrAdmin(collection);

        AccountList storage accounts = frozenAccounts[collection];

        for (uint256 i = 0; i < accountsToFreeze.length;) {
            address accountToFreeze = accountsToFreeze[i];

            if (accounts.enumerableAccounts.add(accountToFreeze)) {
                emit AccountFrozenForCollection(collection, accountToFreeze);
                accounts.nonEnumerableAccounts[accountToFreeze] = true;
            }

            unchecked {
                ++i;
            }
        }
    }

    /**
     * @notice Removes accounts to the frozen accounts list of a collection.
     * 
     * @dev Throws when the caller is neither collection contract, nor the owner or admin of the specified collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. The accounts are removed from the list of frozen accounts for a collection.
     *      2. A `AccountUnfrozenForCollection` event is emitted for each account removed from the list.
     *
     * @param collection          The address of the collection.
     * @param accountsToUnfreeze  The list of accounts to remove from frozen accounts.
     */
    function unfreezeAccountsForCollection(address collection, address[] calldata accountsToUnfreeze) external {
        _requireCallerIsNFTOrContractOwnerOrAdmin(collection);

        AccountList storage accounts = frozenAccounts[collection];

        for (uint256 i = 0; i < accountsToUnfreeze.length;) {
            address accountToUnfreeze = accountsToUnfreeze[i];

            if (accounts.enumerableAccounts.remove(accountToUnfreeze)) {
                emit AccountUnfrozenForCollection(collection, accountToUnfreeze);
                accounts.nonEnumerableAccounts[accountToUnfreeze] = false;
            }

            unchecked {
                ++i;
            }
        }
    }

    /**
     * @notice Get the security policy of the specified collection.
     * @param collection The address of the collection.
     * @return           The security policy of the specified collection, which includes:
     *                   Transfer security level, operator whitelist id, permitted contract receiver allowlist id,
     *                   authorizer mode, if authorizer can set a wildcard operator, and if account freezing is
     *                   enabled.
     */
    function getCollectionSecurityPolicy(
        address collection
    ) external view returns (CollectionSecurityPolicyV3 memory) {
        return collectionSecurityPolicies[collection];
    }

    /**
     * @notice Adds one or more accounts to a blacklist.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the accounts array is empty.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Accounts not previously in the list are added.
     *      2. An `AddedAccountToList` event is emitted for each account that is newly added to the list.
     *
     * @param id       The id of the list.
     * @param accounts The addresses of the accounts to add.
     */
    function addAccountsToBlacklist(
        uint120 id, 
        address[] calldata accounts
    ) external {
        _addAccountsToList(blacklists[id], LIST_TYPE_BLACKLIST, id, accounts);
    }

    /**
     * @notice Adds one or more accounts to a whitelist.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the accounts array is empty.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Accounts not previously in the list are added.
     *      2. An `AddedAccountToList` event is emitted for each account that is newly added to the list.
     *
     * @param id       The id of the list.
     * @param accounts The addresses of the accounts to add.
     */
    function addAccountsToWhitelist(
        uint120 id, 
        address[] calldata accounts
    ) external {
        _addAccountsToList(whitelists[id], LIST_TYPE_WHITELIST, id, accounts);
    }

    /**
     * @notice Adds one or more accounts to authorizers.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the accounts array is empty.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Accounts not previously in the list are added.
     *      2. An `AddedAccountToList` event is emitted for each account that is newly added to the list.
     *
     * @param id       The id of the list.
     * @param accounts The addresses of the accounts to add.
     */
    function addAccountsToAuthorizers(
        uint120 id, 
        address[] calldata accounts
    ) external {
        _addAccountsToList(authorizers[id], LIST_TYPE_AUTHORIZERS, id, accounts);
    }

    /**
     * @notice Adds one or more codehashes to a blacklist.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the codehashes array is empty.
     * @dev Throws when a codehash is zero.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Codehashes not previously in the list are added.
     *      2. An `AddedCodeHashToList` event is emitted for each codehash that is newly added to the list.
     *
     * @param id         The id of the list.
     * @param codehashes The codehashes to add.
     */
    function addCodeHashesToBlacklist(
        uint120 id, 
        bytes32[] calldata codehashes
    ) external {
        _addCodeHashesToList(blacklists[id], LIST_TYPE_BLACKLIST, id, codehashes);
    }

    /**
     * @notice Adds one or more codehashes to a whitelist.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the codehashes array is empty.
     * @dev Throws when a codehash is zero.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Codehashes not previously in the list are added.
     *      2. An `AddedCodeHashToList` event is emitted for each codehash that is newly added to the list.
     *
     * @param id         The id of the list.
     * @param codehashes The codehashes to add.
     */
    function addCodeHashesToWhitelist(
        uint120 id, 
        bytes32[] calldata codehashes
    ) external {
        _addCodeHashesToList(whitelists[id], LIST_TYPE_WHITELIST, id, codehashes);
    }

    /**
     * @notice Removes one or more accounts from a blacklist.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the accounts array is empty.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Accounts previously in the list are removed.
     *      2. A `RemovedAccountFromList` event is emitted for each account that is removed from the list.
     *
     * @param id       The id of the list.
     * @param accounts The addresses of the accounts to remove.
     */
    function removeAccountsFromBlacklist(
        uint120 id, 
        address[] calldata accounts
    ) external {
        _removeAccountsFromList(blacklists[id], LIST_TYPE_BLACKLIST, id, accounts);
    }

    /**
     * @notice Removes one or more accounts from a whitelist.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the accounts array is empty.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Accounts previously in the list are removed.
     *      2. A `RemovedAccountFromList` event is emitted for each account that is removed from the list.
     *
     * @param id       The id of the list.
     * @param accounts The addresses of the accounts to remove.
     */
    function removeAccountsFromWhitelist(
        uint120 id, 
        address[] calldata accounts
    ) external {
        _removeAccountsFromList(whitelists[id], LIST_TYPE_WHITELIST, id, accounts);
    }

    /**
     * @notice Removes one or more accounts from authorizers.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the accounts array is empty.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Accounts previously in the list are removed.
     *      2. A `RemovedAccountFromList` event is emitted for each account that is removed from the list.
     *
     * @param id       The id of the list.
     * @param accounts The addresses of the accounts to remove.
     */
    function removeAccountsFromAuthorizers(
        uint120 id, 
        address[] calldata accounts
    ) external {
        _removeAccountsFromList(authorizers[id], LIST_TYPE_AUTHORIZERS, id, accounts);
    }

    /**
     * @notice Removes one or more codehashes from a blacklist.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the codehashes array is empty.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Codehashes previously in the list are removed.
     *      2. A `RemovedCodeHashFromList` event is emitted for each codehash that is removed from the list.
     *
     * @param id         The id of the list.
     * @param codehashes The codehashes to remove.
     */
    function removeCodeHashesFromBlacklist(
        uint120 id, 
        bytes32[] calldata codehashes
    ) external {
        _removeCodeHashesFromList(blacklists[id], LIST_TYPE_BLACKLIST, id, codehashes);
    }

    /**
     * @notice Removes one or more codehashes from a whitelist.
     *
     * @dev Throws when the caller does not own the specified list.
     * @dev Throws when the codehashes array is empty.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Codehashes previously in the list are removed.
     *      2. A `RemovedCodeHashFromList` event is emitted for each codehash that is removed from the list.
     *
     * @param id         The id of the list.
     * @param codehashes The codehashes to remove.
     */
    function removeCodeHashesFromWhitelist(
        uint120 id, 
        bytes32[] calldata codehashes
    ) external {
        _removeCodeHashesFromList(whitelists[id], LIST_TYPE_WHITELIST, id, codehashes);
    }

    /**
     * @notice Get blacklisted accounts by list id.
     * @param  id The id of the list.
     * @return An array of blacklisted accounts.
     */
    function getBlacklistedAccounts(uint120 id) public view returns (address[] memory) {
        return blacklists[id].enumerableAccounts.values();
    }

    /**
     * @notice Get whitelisted accounts by list id.
     * @param  id The id of the list.
     * @return An array of whitelisted accounts.
     */
    function getWhitelistedAccounts(uint120 id) public view returns (address[] memory) {
        return whitelists[id].enumerableAccounts.values();
    }

    /**
     * @notice Get authorizor accounts by list id.
     * @param  id The id of the list.
     * @return An array of authorizer accounts.
     */
    function getAuthorizerAccounts(uint120 id) public view returns (address[] memory) {
        return authorizers[id].enumerableAccounts.values();
    }

    /**
     * @notice Get blacklisted codehashes by list id.
     * @param id The id of the list.
     * @return   An array of blacklisted codehashes.
     */
    function getBlacklistedCodeHashes(uint120 id) public view returns (bytes32[] memory) {
        return blacklists[id].enumerableCodehashes.values();
    }

    /**
     * @notice Get whitelisted codehashes by list id.
     * @param id The id of the list.
     * @return   An array of whitelisted codehashes.
     */
    function getWhitelistedCodeHashes(uint120 id) public view returns (bytes32[] memory) {
        return whitelists[id].enumerableCodehashes.values();
    }

    /**
     * @notice Check if an account is blacklisted in a specified list.
     * @param id       The id of the list.
     * @param account  The address of the account to check.
     * @return         True if the account is blacklisted in the specified list, false otherwise.
     */
    function isAccountBlacklisted(uint120 id, address account) public view returns (bool) {
        return blacklists[id].nonEnumerableAccounts[account];
    }

    /**
     * @notice Check if an account is whitelisted in a specified list.
     * @param id       The id of the list.
     * @param account  The address of the account to check.
     * @return         True if the account is whitelisted in the specified list, false otherwise.
     */
    function isAccountWhitelisted(uint120 id, address account) public view returns (bool) {
        return whitelists[id].nonEnumerableAccounts[account];
    }

    /**
     * @notice Check if an account is an authorizer in a specified list.
     * @param id       The id of the list.
     * @param account  The address of the account to check.
     * @return         True if the account is an authorizer in the specified list, false otherwise.
     */
    function isAccountAuthorizer(uint120 id, address account) public view returns (bool) {
        return authorizers[id].nonEnumerableAccounts[account];
    }

    /**
     * @notice Check if a codehash is blacklisted in a specified list.
     * @param id       The id of the list.
     * @param codehash  The codehash to check.
     * @return         True if the codehash is blacklisted in the specified list, false otherwise.
     */
    function isCodeHashBlacklisted(uint120 id, bytes32 codehash) public view returns (bool) {
        return blacklists[id].nonEnumerableCodehashes[codehash];
    }

    /**
     * @notice Check if a codehash is whitelisted in a specified list.
     * @param id       The id of the list.
     * @param codehash  The codehash to check.
     * @return         True if the codehash is whitelisted in the specified list, false otherwise.
     */
    function isCodeHashWhitelisted(uint120 id, bytes32 codehash) public view returns (bool) {
        return whitelists[id].nonEnumerableCodehashes[codehash];
    }

    /**
     * @notice Get blacklisted accounts by collection.
     * @param collection The address of the collection.
     * @return           An array of blacklisted accounts.
     */
    function getBlacklistedAccountsByCollection(address collection) external view returns (address[] memory) {
        return getBlacklistedAccounts(collectionSecurityPolicies[collection].listId);
    }

    /**
     * @notice Get whitelisted accounts by collection.
     * @param collection The address of the collection.
     * @return           An array of whitelisted accounts.
     */
    function getWhitelistedAccountsByCollection(address collection) external view returns (address[] memory) {
        return getWhitelistedAccounts(collectionSecurityPolicies[collection].listId);
    }

    /**
     * @notice Get authorizer accounts by collection.
     * @param collection The address of the collection.
     * @return           An array of authorizer accounts.
     */
    function getAuthorizerAccountsByCollection(address collection) external view returns (address[] memory) {
        return getAuthorizerAccounts(collectionSecurityPolicies[collection].listId);
    }

    /**
     * @notice Get frozen accounts by collection.
     * @param collection The address of the collection.
     * @return           An array of frozen accounts.
     */
    function getFrozenAccountsByCollection(address collection) external view returns (address[] memory) {
        return frozenAccounts[collection].enumerableAccounts.values();
    }

    /**
     * @notice Get blacklisted codehashes by collection.
     * @param collection The address of the collection.
     * @return           An array of blacklisted codehashes.
     */
    function getBlacklistedCodeHashesByCollection(address collection) external view returns (bytes32[] memory) {
        return getBlacklistedCodeHashes(collectionSecurityPolicies[collection].listId);
    }

    /**
     * @notice Get whitelisted codehashes by collection.
     * @param collection The address of the collection.
     * @return           An array of whitelisted codehashes.
     */
    function getWhitelistedCodeHashesByCollection(address collection) external view returns (bytes32[] memory) {
        return getWhitelistedCodeHashes(collectionSecurityPolicies[collection].listId);
    }

    /**
     * @notice Check if an account is blacklisted by a specified collection.
     * @param collection The address of the collection.
     * @param account    The address of the account to check.
     * @return           True if the account is blacklisted by the specified collection, false otherwise.
     */
    function isAccountBlacklistedByCollection(address collection, address account) external view returns (bool) {
        return isAccountBlacklisted(collectionSecurityPolicies[collection].listId, account);
    }

    /**
     * @notice Check if an account is whitelisted by a specified collection.
     * @param collection The address of the collection.
     * @param account    The address of the account to check.
     * @return           True if the account is whitelisted by the specified collection, false otherwise.
     */
    function isAccountWhitelistedByCollection(address collection, address account) external view returns (bool) {
        return isAccountWhitelisted(collectionSecurityPolicies[collection].listId, account);
    }

    /**
     * @notice Check if an account is an authorizer of a specified collection.
     * @param collection The address of the collection.
     * @param account    The address of the account to check.
     * @return           True if the account is an authorizer by the specified collection, false otherwise.
     */
    function isAccountAuthorizerOfCollection(address collection, address account) external view returns (bool) {
        return isAccountAuthorizer(collectionSecurityPolicies[collection].listId, account);
    }

    /**
     * @notice Check if an account is frozen for a specified collection.
     * @param collection The address of the collection.
     * @param account    The address of the account to check.
     * @return           True if the account is frozen by the specified collection, false otherwise.
     */
    function isAccountFrozenForCollection(address collection, address account) external view returns (bool) {
        return frozenAccounts[collection].nonEnumerableAccounts[account];
    }

    /**
     * @notice Check if a codehash is blacklisted by a specified collection.
     * @param collection The address of the collection.
     * @param codehash   The codehash to check.
     * @return           True if the codehash is blacklisted by the specified collection, false otherwise.
     */
    function isCodeHashBlacklistedByCollection(address collection, bytes32 codehash) external view returns (bool) {
        return isCodeHashBlacklisted(collectionSecurityPolicies[collection].listId, codehash);
    }

    /**
     * @notice Check if a codehash is whitelisted by a specified collection.
     * @param collection The address of the collection.
     * @param codehash   The codehash to check.
     * @return           True if the codehash is whitelisted by the specified collection, false otherwise.
     */
    function isCodeHashWhitelistedByCollection(address collection, bytes32 codehash) external view returns (bool) {
        return isCodeHashWhitelisted(collectionSecurityPolicies[collection].listId, codehash);
    }

    /// @notice Returns true if the specified account has verified a signature on the registry, false otherwise.
    function isVerifiedEOA(address account) public view returns (bool) {
        return IEOARegistry(_eoaRegistry).isVerifiedEOA(account);
    }

    /// @notice ERC-165 Interface Support
    /// @dev    Do not remove LEGACY from this contract or future contracts.  
    ///         Doing so will break backwards compatibility with V1 and V2 creator tokens.
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == LEGACY_TRANSFER_VALIDATOR_INTERFACE_ID ||
            interfaceId == type(ITransferValidator).interfaceId ||
            interfaceId == type(IPermitC).interfaceId ||
            interfaceId == type(IEOARegistry).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /*************************************************************************/
    /*                                HELPERS                                */
    /*************************************************************************/

    /**
     * @notice Reverts the transaction if the caller is not the owner or assigned the default
     * @notice admin role of the contract at `tokenAddress`.
     *
     * @dev    Throws when the caller is neither owner nor assigned the default admin role.
     * 
     * @param tokenAddress The contract address of the token to check permissions for.
     */
    function _requireCallerIsNFTOrContractOwnerOrAdmin(address tokenAddress) internal view {
        address caller = msg.sender;
        
        if(caller == tokenAddress) {
            return;
        }

        (address contractOwner,) = _safeOwner(tokenAddress);
        if(caller == contractOwner) {
            return;
        }

        (bool callerIsContractAdmin,) = _safeHasRole(tokenAddress, DEFAULT_ACCESS_CONTROL_ADMIN_ROLE, caller);
        if(callerIsContractAdmin) {
            return;
        }

        revert CreatorTokenTransferValidator__CallerMustHaveElevatedPermissionsForSpecifiedNFT();
    }

    /**
     * @notice Copies all addresses in `ptrFromList` to `ptrToList`.
     * 
     * @dev    This function will copy all addresses from one list to another list.
     * @dev    Note: If used to copy adddresses to an existing list the current list contents will not be
     * @dev    deleted before copying. New addresses will be appeneded to the end of the list and the
     * @dev    non-enumerable mapping key value will be set to true.
     * 
     * @dev <h4>Postconditions:</h4>
     *      1. Addresses in from list that are not already present in to list are added to the to list.
     *      2. Emits an `AddedAccountToList` event for each address copied to the list.
     * 
     * @param  listType          The type of list addresses are being copied from and to.
     * @param  destinationListId The id of the list being copied to.
     * @param  ptrFromList       The storage pointer for the list being copied from.
     * @param  ptrToList         The storage pointer for the list being copied to.
     */
    function _copyAddressSet(
        uint8 listType,
        uint120 destinationListId,
        List storage ptrFromList,
        List storage ptrToList
    ) private {
        EnumerableSet.AddressSet storage ptrFromSet = ptrFromList.enumerableAccounts;
        EnumerableSet.AddressSet storage ptrToSet = ptrToList.enumerableAccounts;
        mapping (address => bool) storage ptrToNonEnumerableSet = ptrToList.nonEnumerableAccounts;
        uint256 sourceLength = ptrFromSet.length();
        address account;
        for (uint256 i = 0; i < sourceLength;) {
            account = ptrFromSet.at(i); 
            if (ptrToSet.add(account)) {
                emit AddedAccountToList(listType, destinationListId, account);
                ptrToNonEnumerableSet[account] = true;
            }

            unchecked {
                ++i;
            }
        }
    }

    /**
     * @notice Copies all codehashes in `ptrFromList` to `ptrToList`.
     * 
     * @dev    This function will copy all codehashes from one list to another list.
     * @dev    Note: If used to copy codehashes to an existing list the current list contents will not be
     * @dev    deleted before copying. New codehashes will be appeneded to the end of the list and the
     * @dev    non-enumerable mapping key value will be set to true.
     * 
     * @dev <h4>Postconditions:</h4>
     *      1. Codehashes in from list that are not already present in to list are added to the to list.
     *      2. Emits an `AddedCodeHashToList` event for each codehash copied to the list.
     * 
     * @param  listType          The type of list codehashes are being copied from and to.
     * @param  destinationListId The id of the list being copied to.
     * @param  ptrFromList       The storage pointer for the list being copied from.
     * @param  ptrToList         The storage pointer for the list being copied to.
     */
    function _copyBytes32Set(
        uint8 listType,
        uint120 destinationListId,
        List storage ptrFromList,
        List storage ptrToList
    ) private {
        EnumerableSet.Bytes32Set storage ptrFromSet = ptrFromList.enumerableCodehashes;
        EnumerableSet.Bytes32Set storage ptrToSet = ptrToList.enumerableCodehashes;
        mapping (bytes32 => bool) storage ptrToNonEnumerableSet = ptrToList.nonEnumerableCodehashes;
        uint256 sourceLength = ptrFromSet.length();
        bytes32 codehash;
        for (uint256 i = 0; i < sourceLength;) {
            codehash = ptrFromSet.at(i);
            if (ptrToSet.add(codehash)) {
                emit AddedCodeHashToList(listType, destinationListId, codehash);
                ptrToNonEnumerableSet[codehash] = true;
            }

            unchecked {
                ++i;
            }
        }
    }

    /**
     * @notice Adds one or more accounts to a list.
     * 
     * @dev <h4>Postconditions:</h4>
     *      1. Accounts that were not previously in the list are added to the list.
     *      2. An `AddedAccountToList` event is emitted for each account that was not
     *         previously on the list.
     * 
     * @param list     The storage pointer for the list to add accounts to.
     * @param listType The type of list the accounts are being added to.
     * @param id       The id of the list the accounts are being added to.
     * @param accounts An array of accounts to add to the list.
     */
    function _addAccountsToList(
        List storage list,
        uint8 listType,
        uint120 id,
        address[] calldata accounts
    ) internal onlyListOwner(id) {
        address account;
        for (uint256 i = 0; i < accounts.length;) {
            account = accounts[i];

            if (list.enumerableAccounts.add(account)) {
                emit AddedAccountToList(listType, id, account);
                list.nonEnumerableAccounts[account] = true;
            }

            unchecked {
                ++i;
            }
        }
    }

    /**
     * @notice Adds one or more codehashes to a list.
     * 
     * @dev <h4>Postconditions:</h4>
     *      1. Codehashes that were not previously in the list are added to the list.
     *      2. An `AddedCodeHashToList` event is emitted for each codehash that was not
     *         previously on the list.
     * 
     * @param list        The storage pointer for the list to add codehashes to.
     * @param listType    The type of list the codehashes are being added to.
     * @param id          The id of the list the codehashes are being added to.
     * @param codehashes  An array of codehashes to add to the list.
     */
    function _addCodeHashesToList(
        List storage list,
        uint8 listType,
        uint120 id,
        bytes32[] calldata codehashes
    ) internal onlyListOwner(id) {
        bytes32 codehash;
        for (uint256 i = 0; i < codehashes.length;) {
            codehash = codehashes[i];

            if (list.enumerableCodehashes.add(codehash)) {
                emit AddedCodeHashToList(listType, id, codehash);
                list.nonEnumerableCodehashes[codehash] = true;
            }

            unchecked {
                ++i;
            }
        }
    }

    /**
     * @notice Removes one or more accounts from a list.
     * 
     * @dev <h4>Postconditions:</h4>
     *      1. Accounts that were previously in the list are removed from the list.
     *      2. An `RemovedAccountFromList` event is emitted for each account that was
     *         previously on the list.
     * 
     * @param list        The storage pointer for the list to remove accounts from.
     * @param listType    The type of list the accounts are being removed from.
     * @param id          The id of the list the accounts are being removed from.
     * @param accounts    An array of accounts to remove from the list.
     */
    function _removeAccountsFromList(
        List storage list, 
        uint8 listType,
        uint120 id, 
        address[] memory accounts
    ) internal onlyListOwner(id) {
        address account;
        for (uint256 i = 0; i < accounts.length;) {
            account = accounts[i];
            if (list.enumerableAccounts.remove(account)) {
                emit RemovedAccountFromList(listType, id, account);
                delete list.nonEnumerableAccounts[account];
            }

            unchecked {
                ++i;
            }
        }
    }

    /**
     * @notice Removes one or more codehashes from a list.
     * 
     * @dev <h4>Postconditions:</h4>
     *      1. Codehashes that were previously in the list are removed from the list.
     *      2. An `RemovedCodeHashFromList` event is emitted for each codehash that was
     *         previously on the list.
     * 
     * @param list        The storage pointer for the list to remove codehashes from.
     * @param listType    The type of list the codehashes are being removed from.
     * @param id          The id of the list the codehashes are being removed from.
     * @param codehashes  An array of codehashes to remove from the list.
     */
    function _removeCodeHashesFromList(
        List storage list, 
        uint8 listType, 
        uint120 id, 
        bytes32[] calldata codehashes
    ) internal onlyListOwner(id) {
        bytes32 codehash;
        for (uint256 i = 0; i < codehashes.length;) {
            codehash = codehashes[i];
            if (list.enumerableCodehashes.remove(codehash)) {
                emit RemovedCodeHashFromList(listType, id, codehash);
                delete list.nonEnumerableCodehashes[codehash];
            }

            unchecked {
                ++i;
            }
        }
    }

    /**
     * @notice Sets the owner of list `id` to `newOwner`.
     * 
     * @dev    Throws when the caller is not the owner of the list.
     * 
     * @dev    <h4>Postconditions:</h4>
     *         1. The owner of list `id` is set to `newOwner`.
     *         2. Emits a `ReassignedListOwnership` event.
     * 
     * @param id       The id of the list to reassign ownership of.
     * @param newOwner The account to assign ownership of the list to.
     */
    function _reassignOwnershipOfList(uint120 id, address newOwner) private {
        _requireCallerOwnsList(id);
        listOwners[id] = newOwner;
        emit ReassignedListOwnership(id, newOwner);
    }

    /**
     * @notice Requires the caller to be the owner of list `id`.
     * 
     * @dev    Throws when the caller is not the owner of the list.
     * 
     * @param id  The id of the list to check ownership of.
     */
    function _requireCallerOwnsList(uint120 id) private view {
        if (msg.sender != listOwners[id]) {
            revert CreatorTokenTransferValidator__CallerDoesNotOwnList();
        }
    }

    /**
     * @dev Internal function used to efficiently retrieve the code length of `account`.
     * 
     * @param account The address to get the deployed code length for.
     * 
     * @return length The length of deployed code at the address.
     */
    function _getCodeLengthAsm(address account) internal view returns (uint256 length) {
        assembly { length := extcodesize(account) }
    }

    /**
     * @dev Internal function used to efficiently retrieve the codehash of `account`.
     * 
     * @param account The address to get the deployed codehash for.
     * 
     * @return codehash The codehash of the deployed code at the address.
     */
    function _getCodeHashAsm(address account) internal view returns (bytes32 codehash) {
        assembly { codehash := extcodehash(account) }
    }

    /**
     * @dev Hook that is called before any permitted token transfer that goes through Permit-C.
     *      Applies the collection transfer policy, using the operator that called Permit-C as the caller.
     *      This allows creator token standard protections to extend to permitted transfers.
     * 
     * @param token  The collection address of the token being transferred.
     * @param from   The address of the token owner.
     * @param to     The address of the token receiver.
     * @param id     The token id being transferred.
     */
    function _beforeTransferFrom(
        uint256 tokenType,
        address token, 
        address from, 
        address to, 
        uint256 id, 
        uint256 /*amount*/
    ) internal override returns (bool isError) {
        (bytes4 selector, uint16 collectionTokenType) = _validateTransfer(_callerAuthorizedCheckToken, token, msg.sender, from, to, id);
        if (collectionTokenType == DEFAULT_TOKEN_TYPE || collectionTokenType == tokenType) {
            isError = SELECTOR_NO_ERROR != selector;
        } else {
            revert CreatorTokenTransferValidator__TokenTypesDoNotMatch();
        }
    }

    /**
     * @notice Apply the collection transfer policy to a transfer operation of a creator token.
     *
     * @dev If the caller is self (Permit-C Processor) it means we have already applied operator validation in the 
     *      _beforeTransferFrom callback.  In this case, the security policy was already applied and the operator
     *      that used the Permit-C processor passed the security policy check and transfer can be safely allowed.
     *
     * @dev The order of checking whitelisted accounts, authorized operator check and whitelisted codehashes
     *      is very deliberate.  The order of operations is determined by the most frequently used settings that are
     *      expected in the wild.
     *
     * @dev Throws when the collection has enabled account freezing mode and either the `from` or `to` addresses
     *      are on the list of frozen accounts for the collection.
     * @dev Throws when the collection is set to Level 9 - Soulbound Token.
     * @dev Throws when the receiver has deployed code and isn't whitelisted, if ReceiverConstraints.NoCode is set
     *      and the transfer is not approved by an authorizer for the collection.
     * @dev Throws when the receiver has never verified a signature to prove they are an EOA and the receiver
     *      isn't whitelisted, if the ReceiverConstraints.EOA is set and the transfer is not approved by an 
     *      authorizer for the collection..
     * @dev Throws when `msg.sender` is blacklisted, if CallerConstraints.OperatorBlacklistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when `msg.sender` isn't whitelisted, if CallerConstraints.OperatorWhitelistEnableOTC is set, unless
     *      `msg.sender` is also the `from` address or the transfer is approved by an authorizer for the collection.
     * @dev Throws when neither `msg.sender` nor `from` are whitelisted, if 
     *      CallerConstraints.OperatorWhitelistDisableOTC is set and the transfer 
     *      is not approved by an authorizer for the collection.
     *
     * @dev <h4>Postconditions:</h4>
     *      1. Transfer is allowed or denied based on the applied transfer policy.
     *
     * @param collection  The collection address of the token being transferred.
     * @param caller      The address initiating the transfer.
     * @param from        The address of the token owner.
     * @param to          The address of the token receiver.
     * @param tokenId     The token id being transferred.
     * 
     * @return The selector value for an error if the transfer is not allowed, `SELECTOR_NO_ERROR` if the transfer is allowed.
     */
    function _validateTransfer(
        function(address,address,uint256) internal view returns(bool) _callerAuthorizedParam,
        address collection, 
        address caller, 
        address from, 
        address to,
        uint256 tokenId
    ) internal view returns (bytes4,uint16) {
        if (caller == address(this)) { 
            // If the caller is self (Permit-C Processor) it means we have already applied operator validation in the 
            // _beforeTransferFrom callback.  In this case, the security policy was already applied and the operator
            // that used the Permit-C processor passed the security policy check and transfer can be safely allowed.
            return (SELECTOR_NO_ERROR, DEFAULT_TOKEN_TYPE);
        }

        CollectionSecurityPolicyV3 storage collectionSecurityPolicy = collectionSecurityPolicies[collection];

        uint120 listId = collectionSecurityPolicy.listId;

        (uint256 callerConstraints, uint256 receiverConstraints) = 
            transferSecurityPolicies(collectionSecurityPolicy.transferSecurityLevel);

        if (collectionSecurityPolicy.enableAccountFreezingMode) {
            AccountList storage frozenAccountList = frozenAccounts[collection];
            
            if (frozenAccountList.nonEnumerableAccounts[from]) {
                return (CreatorTokenTransferValidator__SenderAccountIsFrozen.selector, DEFAULT_TOKEN_TYPE);
            }

            if (frozenAccountList.nonEnumerableAccounts[to]) {
                return (CreatorTokenTransferValidator__ReceiverAccountIsFrozen.selector, DEFAULT_TOKEN_TYPE);
            }
        }

        if (callerConstraints == CALLER_CONSTRAINTS_SBT) {
            return (CreatorTokenTransferValidator__TokenIsSoulbound.selector, DEFAULT_TOKEN_TYPE);
        }

        List storage whitelist = whitelists[listId];

        if (receiverConstraints == RECEIVER_CONSTRAINTS_NO_CODE) {
            if (_getCodeLengthAsm(to) > 0) {
                if (!whitelist.nonEnumerableAccounts[to]) {
                    // Cache _callerAuthorizedParam on stack to avoid stack too deep
                    function(address,address,uint256) internal view returns(bool) _callerAuthorized = _callerAuthorizedParam;
                    if(!_callerAuthorized(collection, caller, tokenId)) {
                        if (!whitelist.nonEnumerableCodehashes[_getCodeHashAsm(to)]) {
                            return (CreatorTokenTransferValidator__ReceiverMustNotHaveDeployedCode.selector, DEFAULT_TOKEN_TYPE);
                        }
                    }
                }
            }
        } else if (receiverConstraints == RECEIVER_CONSTRAINTS_EOA) {
            if (!isVerifiedEOA(to)) {
                if (!whitelist.nonEnumerableAccounts[to]) {
                    // Cache _callerAuthorizedParam on stack to avoid stack too deep
                    function(address,address,uint256) internal view returns(bool) _callerAuthorized = _callerAuthorizedParam;
                    if(!_callerAuthorized(collection, caller, tokenId)) {
                        if (!whitelist.nonEnumerableCodehashes[_getCodeHashAsm(to)]) {
                            return (CreatorTokenTransferValidator__ReceiverProofOfEOASignatureUnverified.selector, DEFAULT_TOKEN_TYPE);
                        }
                    }
                }
            }
        }

        if (caller == from) {
            if (callerConstraints != CALLER_CONSTRAINTS_OPERATOR_WHITELIST_DISABLE_OTC) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }
        }

        if (callerConstraints == CALLER_CONSTRAINTS_OPERATOR_BLACKLIST_ENABLE_OTC) {
            // Cache _callerAuthorizedParam on stack to avoid stack too deep
            function(address,address,uint256) internal view returns(bool) _callerAuthorized = _callerAuthorizedParam;
            if(_callerAuthorized(collection, caller, tokenId)) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            List storage blacklist = blacklists[listId];
            if (blacklist.nonEnumerableAccounts[caller]) {
                return (CreatorTokenTransferValidator__OperatorIsBlacklisted.selector, DEFAULT_TOKEN_TYPE);
            }

            if (blacklist.nonEnumerableCodehashes[_getCodeHashAsm(caller)]) {
                return (CreatorTokenTransferValidator__OperatorIsBlacklisted.selector, DEFAULT_TOKEN_TYPE);
            }
        } else if (callerConstraints == CALLER_CONSTRAINTS_OPERATOR_WHITELIST_ENABLE_OTC) {
            if (whitelist.nonEnumerableAccounts[caller]) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            // Cache _callerAuthorizedParam on stack to avoid stack too deep
            function(address,address,uint256) internal view returns(bool) _callerAuthorized = _callerAuthorizedParam;
            if( _callerAuthorized(collection, caller, tokenId)) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            if (whitelist.nonEnumerableCodehashes[_getCodeHashAsm(caller)]) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            return (CreatorTokenTransferValidator__CallerMustBeWhitelisted.selector, DEFAULT_TOKEN_TYPE);
        } else if (callerConstraints == CALLER_CONSTRAINTS_OPERATOR_WHITELIST_DISABLE_OTC) {
            mapping(address => bool) storage accountWhitelist = whitelist.nonEnumerableAccounts;

            if (accountWhitelist[caller]) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            if (accountWhitelist[from]) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            // Cache _callerAuthorizedParam on stack to avoid stack too deep
            function(address,address,uint256) internal view returns(bool) _callerAuthorized = _callerAuthorizedParam;
            if(_callerAuthorized(collection, caller, tokenId)) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            mapping(bytes32 => bool) storage codehashWhitelist = whitelist.nonEnumerableCodehashes;

            // Cache caller on stack to avoid stack too deep
            address tmpAddress = caller;
            if (codehashWhitelist[_getCodeHashAsm(tmpAddress)]) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            // Cache from on stack to avoid stack too deep
            tmpAddress = from;
            if (codehashWhitelist[_getCodeHashAsm(tmpAddress)]) {
                return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
            }

            return (CreatorTokenTransferValidator__CallerMustBeWhitelisted.selector, DEFAULT_TOKEN_TYPE);
        }

        return (SELECTOR_NO_ERROR, collectionSecurityPolicy.tokenType);
    }

    /**
     * @dev Internal function used to efficiently revert with a custom error selector.
     *
     * @param errorSelector The error selector to revert with.
     */
    function _revertCustomErrorSelectorAsm(bytes4 errorSelector) internal pure {
        assembly {
            mstore(0x00, errorSelector)
            revert(0x00, 0x04)
        }
    }

    /**
     * @dev Internal function used to check if authorization mode can be activated for a transfer.
     * 
     * @dev Throws when the collection has not enabled authorization mode.
     * @dev Throws when the wildcard operator is being set for a collection that does not
     *      allow wildcard operators.
     * @dev Throws when the authorizer is not in the list of approved authorizers for
     *      the collection.
     * 
     * @param collection  The collection address to activate authorization mode for a transfer.
     * @param operator    The operator specified by the authorizer to allow transfers.
     * @param authorizer  The address of the authorizer making the call.
     */
    function _checkCollectionAllowsAuthorizerAndOperator(
        address collection, 
        address operator, 
        address authorizer
    ) internal view {
        CollectionSecurityPolicyV3 storage collectionSecurityPolicy = collectionSecurityPolicies[collection];

        if (collectionSecurityPolicy.disableAuthorizationMode) {
            revert CreatorTokenTransferValidator__AuthorizationDisabledForCollection();
        }

        if (collectionSecurityPolicy.authorizersCannotSetWildcardOperators) {
            if (operator == WILDCARD_OPERATOR_ADDRESS) {
                revert CreatorTokenTransferValidator__WildcardOperatorsCannotBeAuthorizedForCollection();
            }
        }

        if (!authorizers[collectionSecurityPolicy.listId].nonEnumerableAccounts[authorizer]) {
            revert CreatorTokenTransferValidator__CallerMustBeAnAuthorizer();
        }
    }

    /**
     * @dev Modifier to apply the allowed authorizer and operator for collection checks.
     * 
     * @dev Throws when the collection has not enabled authorization mode.
     * @dev Throws when the wildcard operator is being set for a collection that does not
     *      allow wildcard operators.
     * @dev Throws when the authorizer is not in the list of approved authorizers for
     *      the collection.
     * 
     * @param collection  The collection address to activate authorization mode for a transfer.
     * @param operator    The operator specified by the authorizer to allow transfers.
     * @param authorizer  The address of the authorizer making the call.
     */
    modifier whenAuthorizerAndOperatorEnabledForCollection(
        address collection, 
        address operator, 
        address authorizer
    ) {
        _checkCollectionAllowsAuthorizerAndOperator(collection, operator, authorizer);
        _;
    }

    /**
     * @dev Internal function for setting the authorized operator in storage for a token and collection.
     * 
     * @param operator         The allowed operator for an authorized transfer.
     * @param collection       The address of the collection that the operator is authorized for.
     * @param tokenId          The id of the token that is authorized.
     * @param allowAnyTokenId  Flag if the authorizer is enabling transfers for any token id
     */
    function _setOperatorInTransientStorage(
        address operator,
        address collection, 
        uint256 tokenId,
        bool allowAnyTokenId
    ) internal whenAuthorizerAndOperatorEnabledForCollection(collection, operator, msg.sender) {
        _setTstorish(_getTransientOperatorSlot(collection), (allowAnyTokenId ? 1 << 255 : 0) | uint256(uint160(operator)));
        _setTstorish(_getTransientOperatorSlot(collection, tokenId), uint256(uint160(operator)));
    }

    /**
     * @dev Internal function to check if a caller is an authorized operator for the token being transferred.
     * 
     * @param caller     The caller of the token transfer.
     * @param collection The collection address of the token being transferred.
     * @param tokenId    The id of the token being transferred.
     * 
     * @return isAuthorized  True if the caller is authorized to transfer the token, false otherwise.
     */
    function _callerAuthorizedCheckToken(
      address collection,
        address caller,
        uint256 tokenId
    ) internal view returns (bool isAuthorized) {
        uint256 slotValue;
        (isAuthorized, ) = _callerAuthorized(caller, _getTransientOperatorSlot(collection, tokenId));
        if (isAuthorized) return true;
        (isAuthorized, slotValue) = _callerAuthorized(caller, _getTransientOperatorSlot(collection));
        isAuthorized = isAuthorized && slotValue >> 255 == 1;
    }

    /**
     * @dev Internal function to check if a caller is an authorized operator for the collection being transferred.
     * 
     * @param caller     The caller of the token transfer.
     * @param collection The collection address of the token being transferred.
     * 
     * @return isAuthorized  True if the caller is authorized to transfer the collection, false otherwise.
     */
    function _callerAuthorizedCheckCollection(
      address collection,
        address caller,
        uint256 /*tokenId*/
    ) internal view returns (bool isAuthorized) {
        (isAuthorized, ) = _callerAuthorized(caller, _getTransientOperatorSlot(collection));
    }

    /**
     * @dev Internal function to check if a caller is an authorized operator. 
     * @dev This overload of `_callerAuthorized` checks a specific storage slot for the caller address.
     * 
     * @param caller     The caller of the token transfer.
     * @param slot       The storage slot to check for the caller address.
     * 
     * @return isAuthorized  True if the caller is authorized to transfer the token, false otherwise.
     * @return slotValue     The transient storage value in `slot`, used to check for allow any token id flag if necessary.
     */
    function _callerAuthorized(address caller, uint256 slot) internal view returns (bool isAuthorized, uint256 slotValue) {
        slotValue = _getTstorish(slot);
        address authorizedOperator = address(uint160(slotValue));
        isAuthorized = authorizedOperator == WILDCARD_OPERATOR_ADDRESS || authorizedOperator == caller;
    }

    /**
     * @dev Internal function used to compute the transient storage slot for the authorized 
     *      operator of a token in a collection.
     * 
     * @param collection The collection address of the token being transferred.
     * @param tokenId    The id of the token being transferred.
     * 
     * @return operatorSlot The storage slot location for the authorized operator value.
     */
    function _getTransientOperatorSlot(
        address collection, 
        uint256 tokenId
    ) internal pure returns (uint256 operatorSlot) {
        assembly {
            mstore(0x00, collection)
            mstore(0x20, tokenId)
            operatorSlot := shr(4, keccak256(0x00, 0x40))
       }
    }

    /**
     * @dev Internal function used to compute the transient storage slot for the authorized operator of a collection.
     * 
     * @param collection The collection address of the token being transferred.
     * 
     * @return operatorSlot The storage slot location for the authorized operator value.
     */
    function _getTransientOperatorSlot(address collection) internal pure returns (uint256 operatorSlot) {
        return uint256(uint160(collection));
    }

    /**
     * @dev A gas efficient, and fallback-safe way to call the owner function on a token contract.
     *      This will get the owner if it exists - and when the function is unimplemented, the
     *      presence of a fallback function will not result in halted execution.
     * 
     * @param tokenAddress  The address of the token collection to get the owner of.
     * 
     * @return owner   The owner of the token collection contract.
     * @return isError True if there was an error in retrieving the owner, false if the call was successful.
     */
    function _safeOwner(
        address tokenAddress
    ) internal view returns(address owner, bool isError) {
        assembly {
            function _callOwner(_tokenAddress) -> _owner, _isError {
                mstore(0x00, 0x8da5cb5b)
                if and(iszero(lt(returndatasize(), 0x20)), staticcall(gas(), _tokenAddress, 0x1C, 0x04, 0x00, 0x20)) {
                    _owner := mload(0x00)
                    leave
                }
                _isError := true
            }
            owner, isError := _callOwner(tokenAddress)
        }
    }
    
    /**
     * @dev A gas efficient, and fallback-safe way to call the hasRole function on a token contract.
     *      This will check if the account `hasRole` if `hasRole` exists - and when the function is unimplemented, the
     *      presence of a fallback function will not result in halted execution.
     * 
     * @param tokenAddress  The address of the token collection to call hasRole on.
     * @param role          The role to check if the account has on the collection.
     * @param account       The address of the account to check if they have a specified role.
     * 
     * @return hasRole The owner of the token collection contract.
     * @return isError True if there was an error in retrieving the owner, false if the call was successful.
     */
    function _safeHasRole(
        address tokenAddress,
        bytes32 role,
        address account
    ) internal view returns(bool hasRole, bool isError) {
        assembly {
            function _callHasRole(_tokenAddress, _role, _account) -> _hasRole, _isError {
                let ptr := mload(0x40)
                mstore(0x40, add(ptr, 0x60))
                mstore(ptr, 0x91d14854)
                mstore(add(0x20, ptr), _role)
                mstore(add(0x40, ptr), _account)
                if and(iszero(lt(returndatasize(), 0x20)), staticcall(gas(), _tokenAddress, add(ptr, 0x1C), 0x44, 0x00, 0x20)) {
                    _hasRole := mload(0x00)
                    leave
                }
                _isError := true
            }
            hasRole, isError := _callHasRole(tokenAddress, role, account)
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/**
 * @dev Constant definitions for receiver constraints used by the transfer validator.
 */
/// @dev No constraints on the receiver of a token.
uint256 constant RECEIVER_CONSTRAINTS_NONE = 0;

/// @dev Token receiver cannot have deployed code.
uint256 constant RECEIVER_CONSTRAINTS_NO_CODE = 1;

/// @dev Token receiver must be a verified EOA with the EOA Registry.
uint256 constant RECEIVER_CONSTRAINTS_EOA = 2;

/// @dev Token is a soulbound token and cannot be transferred.
uint256 constant RECEIVER_CONSTRAINTS_SBT = 3;

/**
 * @dev Constant definitions for caller constraints used by the transfer validator.
 */
/// @dev No constraints on the caller of a token transfer.
uint256 constant CALLER_CONSTRAINTS_NONE = 0;

/// @dev Caller of a token transfer must not be on the blacklist unless it is an OTC transfer.
uint256 constant CALLER_CONSTRAINTS_OPERATOR_BLACKLIST_ENABLE_OTC = 1;

/// @dev Caller of a token transfer must be on the whitelist unless it is an OTC transfer.
uint256 constant CALLER_CONSTRAINTS_OPERATOR_WHITELIST_ENABLE_OTC = 2;

/// @dev Caller of a token transfer must be on the whitelist.
uint256 constant CALLER_CONSTRAINTS_OPERATOR_WHITELIST_DISABLE_OTC = 3;

/// @dev Token is a soulbound token and cannot be transferred.
uint256 constant CALLER_CONSTRAINTS_SBT = 4;


/**
 * @dev Constant definitions for transfer security levels used by the transfer validator
 *      to define what receiver and caller constraints are applied to a transfer.
 */

/// @dev Recommend Security Level -
///        Caller Constraints: Operator Whitelist
///        Receiver Constraints: None
///        OTC: Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_RECOMMENDED = 0;

/// @dev Security Level One -
///        Caller Constraints: None
///        Receiver Constraints: None
///        OTC: Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_ONE = 1;

/// @dev Security Level Two -
///        Caller Constraints: Operator Blacklist
///        Receiver Constraints: None
///        OTC: Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_TWO = 2;

/// @dev Security Level Three -
///        Caller Constraints: Operator Whitelist
///        Receiver Constraints: None
///        OTC: Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_THREE = 3;

/// @dev Security Level Four -
///        Caller Constraints: Operator Whitelist
///        Receiver Constraints: None
///        OTC: Not Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_FOUR = 4;

/// @dev Security Level Five -
///        Caller Constraints: Operator Whitelist
///        Receiver Constraints: No Code
///        OTC: Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_FIVE = 5;

/// @dev Security Level Six -
///        Caller Constraints: Operator Whitelist
///        Receiver Constraints: Verified EOA
///        OTC: Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_SIX = 6;

/// @dev Security Level Seven -
///        Caller Constraints: Operator Whitelist
///        Receiver Constraints: No Code
///        OTC: Not Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_SEVEN = 7;

/// @dev Security Level Eight -
///        Caller Constraints: Operator Whitelist
///        Receiver Constraints: Verified EOA
///        OTC: Not Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_EIGHT = 8;

/// @dev Security Level Nine -
///        Soulbound Token, No Transfers Allowed
uint8 constant TRANSFER_SECURITY_LEVEL_NINE = 9;

/// @dev List type is a blacklist.
uint8 constant LIST_TYPE_BLACKLIST = 0;

/// @dev List type is a whitelist.
uint8 constant LIST_TYPE_WHITELIST = 1;

/// @dev List type is authorizers.
uint8 constant LIST_TYPE_AUTHORIZERS = 2;

/// @dev Constant value for the no error selector.
bytes4 constant SELECTOR_NO_ERROR = bytes4(0x00000000);

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

interface IEOARegistry is IERC165 {
    function isVerifiedEOA(address account) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface ITransferValidator {
    function applyCollectionTransferPolicy(address caller, address from, address to) external view;
    function validateTransfer(address caller, address from, address to) external view;
    function validateTransfer(address caller, address from, address to, uint256 tokenId) external view;
    function validateTransfer(address caller, address from, address to, uint256 tokenId, uint256 amount) external;

    function beforeAuthorizedTransfer(address operator, address token, uint256 tokenId) external;
    function afterAuthorizedTransfer(address token, uint256 tokenId) external;
    function beforeAuthorizedTransfer(address operator, address token) external;
    function afterAuthorizedTransfer(address token) external;
    function beforeAuthorizedTransfer(address token, uint256 tokenId) external;
    function beforeAuthorizedTransferWithAmount(address token, uint256 tokenId, uint256 amount) external;
    function afterAuthorizedTransferWithAmount(address token, uint256 tokenId) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/**
 * @dev Defines constraints for staking tokens in token wrapper contracts.
 */
enum StakerConstraints {
    // 0: No constraints applied to staker.
    None,

    // 1: Transaction originator must be the address that will receive the wrapped tokens.
    CallerIsTxOrigin,

    // 2: Address that will receive the wrapped tokens must be a verified EOA.
    EOA
}

/**
 * @dev Defines the security policy for a token collection in Creator Token Standards V2.
 * 
 * @dev **transferSecurityLevel**: The transfer security level set for the collection.
 * @dev **listId**: The list id that contains the blacklist and whitelist to apply to the collection.
 * @dev **enableGraylisting**: If true, graylisting will be enabled for the collection.
 */
struct CollectionSecurityPolicyV3 {
    bool disableAuthorizationMode;
    bool authorizersCannotSetWildcardOperators;
    uint8 transferSecurityLevel;
    uint120 listId;
    bool enableAccountFreezingMode;
    uint16 tokenType;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/access/Ownable.sol";

contract CreatorTokenTransferValidatorConfiguration is Ownable {

    error CreatorTokenTransferValidatorConfiguration__ConfigurationNotInitialized();

    bool configurationInitialized;
    uint256 private nativeValueToCheckPauseState;

    constructor(address defaultOwner) {
        _transferOwnership(defaultOwner);
    }

    function setNativeValueToCheckPauseState(uint256 _nativeValueToCheckPauseState) external onlyOwner {
        nativeValueToCheckPauseState = _nativeValueToCheckPauseState;
        configurationInitialized = true;
    }

    function getNativeValueToCheckPauseState() external view returns(uint256 _nativeValueToCheckPauseState) {
        if (!configurationInitialized) {
            revert CreatorTokenTransferValidatorConfiguration__ConfigurationNotInitialized();
        }

        _nativeValueToCheckPauseState = nativeValueToCheckPauseState;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "./Errors.sol";
import {IERC20} from "@openzeppelin/contracts/interfaces/IERC20.sol";
import {IERC721} from "@openzeppelin/contracts/interfaces/IERC721.sol";
import {IERC1155} from "@openzeppelin/contracts/interfaces/IERC1155.sol";
import {IERC1271} from "@openzeppelin/contracts/interfaces/IERC1271.sol";
import {Ownable} from "./openzeppelin-optimized/Ownable.sol";
import {EIP712} from "./openzeppelin-optimized/EIP712.sol";
import {
    ZERO_BYTES32,
    ZERO, 
    ONE, 
    ORDER_STATE_OPEN,
    ORDER_STATE_FILLED,
    ORDER_STATE_CANCELLED,
    SINGLE_USE_PERMIT_TRANSFER_ADVANCED_TYPEHASH_STUB,
    PERMIT_ORDER_ADVANCED_TYPEHASH_STUB,
    UPPER_BIT_MASK,
    TOKEN_TYPE_ERC1155,
    TOKEN_TYPE_ERC20,
    TOKEN_TYPE_ERC721,
    PAUSABLE_APPROVAL_TRANSFER_FROM_ERC721,
    PAUSABLE_APPROVAL_TRANSFER_FROM_ERC1155,
    PAUSABLE_APPROVAL_TRANSFER_FROM_ERC20,
    PAUSABLE_PERMITTED_TRANSFER_FROM_ERC721,
    PAUSABLE_PERMITTED_TRANSFER_FROM_ERC1155,
    PAUSABLE_PERMITTED_TRANSFER_FROM_ERC20,
    PAUSABLE_ORDER_TRANSFER_FROM_ERC1155,
    PAUSABLE_ORDER_TRANSFER_FROM_ERC20
} from "./Constants.sol";
import {PackedApproval, OrderFillAmounts} from "./DataTypes.sol";
import {PermitHash} from './libraries/PermitHash.sol';
import {IPermitC} from './interfaces/IPermitC.sol';
import {CollateralizedPausableFlags} from './CollateralizedPausableFlags.sol';

/*
                                                     @@@@@@@@@@@@@@             
                                                    @@@@@@@@@@@@@@@@@@(         
                                                   @@@@@@@@@@@@@@@@@@@@@        
                                                  @@@@@@@@@@@@@@@@@@@@@@@@      
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                                                               @@@@@@@@@@@@     
                            @@@@@@@@@@@@@@*                    @@@@@@@@@@@@     
                           @@@@@@@@@@@@@@@     @               @@@@@@@@@@@@     
                          @@@@@@@@@@@@@@@     @                @@@@@@@@@@@      
                         @@@@@@@@@@@@@@@     @@               @@@@@@@@@@@@      
                        @@@@@@@@@@@@@@@     #@@             @@@@@@@@@@@@/       
                        @@@@@@@@@@@@@@.     @@@@@@@@@@@@@@@@@@@@@@@@@@@         
                       @@@@@@@@@@@@@@@     @@@@@@@@@@@@@@@@@@@@@@@@@            
                      @@@@@@@@@@@@@@@     @@@@@@@@@@@@@@@@@@@@@@@@@             
                     @@@@@@@@@@@@@@@     @@@@@@@@@@@@@@@@@@@@@@@@@@@@           
                    @@@@@@@@@@@@@@@     @@@@@&%%%%%%%%&&@@@@@@@@@@@@@@          
                    @@@@@@@@@@@@@@      @@@@@               @@@@@@@@@@@         
                   @@@@@@@@@@@@@@@     @@@@@                 @@@@@@@@@@@        
                  @@@@@@@@@@@@@@@     @@@@@@                 @@@@@@@@@@@        
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                @@@@@@@@@@@@@@@     @@@@@@@                 @@@@@@@@@@@&        
                @@@@@@@@@@@@@@     *@@@@@@@               (@@@@@@@@@@@@         
               @@@@@@@@@@@@@@@     @@@@@@@@             @@@@@@@@@@@@@@          
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             @@@@@@@@@@@@@@@     @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@            
            @@@@@@@@@@@@@@@     @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@              
           .@@@@@@@@@@@@@@     @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                 
           @@@@@@@@@@@@@@%     @@@@@@@@@@@@@@@@@@@@@@@@(                        
          @@@@@@@@@@@@@@@                                                       
         @@@@@@@@@@@@@@@                                                        
        @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                                         
       @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                                          
       @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&                                          
      @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                                           
 
* @title PermitC
* @custom:version 1.0.0
* @author Limit Break, Inc.
* @description Advanced approval management for ERC20, ERC721 and ERC1155 tokens
*              allowing for single use permit transfers, time-bound approvals
*              and order ID based transfers.
*/
contract PermitC is Ownable, CollateralizedPausableFlags, EIP712, IPermitC {

    /**
     * @notice Map of approval details for the provided bytes32 hash to allow for multiple accessors
     *
     * @dev    keccak256(abi.encode(owner, tokenType, token, id, orderId, masterNonce)) => 
     * @dev        operator => (state, amount, expiration)
     * @dev    Utilized for stored approvals by an owner's direct call to `approve` and  
     * @dev    approvals by signature in `updateApprovalBySignature`. Both methods use a
     * @dev    bytes32(0) value for the `orderId`.
     */
    mapping(bytes32 => mapping(address => PackedApproval)) private _transferApprovals;

    /**
     * @notice Map of approval details for the provided bytes32 hash to allow for multiple accessors
     *
     * @dev    keccak256(abi.encode(owner, tokenType, token, id, orderId, masterNonce)) => 
     * @dev        operator => (state, amount, expiration)
     * @dev    Utilized for order approvals by `fillPermittedOrderERC20` and `fillPermittedOrderERC1155`
     * @dev    with the `orderId` provided by the sender.
     */
    mapping(bytes32 => mapping(address => PackedApproval)) private _orderApprovals;

    /**
     * @notice Map of registered additional data hashes for transfer permits.
     *
     * @dev    This is used to prevent someone from providing an invalid EIP712 envelope label
     * @dev    and tricking a user into signing a different message than they expect.
     */
    mapping(bytes32 => bool) private _registeredTransferHashes;

    /**
     * @notice Map of registered additional data hashes for order permits.
     *
     * @dev    This is used to prevent someone from providing an invalid EIP712 envelope label
     * @dev    and tricking a user into signing a different message than they expect.
     */
    mapping(bytes32 => bool) private _registeredOrderHashes;

    /// @dev Map of an address to a bitmap (slot => status)
    mapping(address => mapping(uint256 => uint256)) private _unorderedNonces;

    /**
     * @notice Master nonce used to invalidate all outstanding approvals for an owner
     *
     * @dev    owner => masterNonce
     * @dev    This is incremented when the owner calls lockdown()
     */
    mapping(address => uint256) private _masterNonces;

    constructor(
        string memory name,
        string memory version,
        address _defaultContractOwner,
        uint256 _nativeValueToCheckPauseState
    ) CollateralizedPausableFlags(_nativeValueToCheckPauseState) EIP712(name, version) {
        _transferOwnership(_defaultContractOwner);
    }

    /**
     * =================================================
     * ================= Modifiers =====================
     * =================================================
     */

    modifier onlyRegisteredTransferAdvancedTypeHash(bytes32 advancedPermitHash) {
        _requireTransferAdvancedPermitHashIsRegistered(advancedPermitHash);
        _;
    }

    modifier onlyRegisteredOrderAdvancedTypeHash(bytes32 advancedPermitHash) {
        _requireOrderAdvancedPermitHashIsRegistered(advancedPermitHash);
        _;
    }

    /**
     * =================================================
     * ============== Approval Transfers ===============
     * =================================================
     */

    /**
     * @notice Approve an operator to spend a specific token / ID combination
     * @notice This function is compatible with ERC20, ERC721 and ERC1155
     * @notice To give unlimited approval for ERC20 and ERC1155, set amount to type(uint200).max
     * @notice When approving an ERC721, you MUST set amount to `1`
     * @notice When approving an ERC20, you MUST set id to `0`
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Updates the approval for an operator to use an amount of a specific token / ID combination
     * @dev    2. If the expiration is 0, the approval is valid only in the context of the current block
     * @dev    3. If the expiration is not 0, the approval is valid until the expiration timestamp
     * @dev    4. If the provided amount is type(uint200).max, the approval is unlimited
     *
     * @param  tokenType  The type of token being approved - must be 20, 721 or 1155.
     * @param  token      The address of the token contract
     * @param  id         The token ID
     * @param  operator   The address of the operator
     * @param  amount     The amount of tokens to approve
     * @param  expiration The expiration timestamp of the approval
     */
    function approve(
        uint256 tokenType,
        address token, 
        uint256 id, 
        address operator, 
        uint200 amount, 
        uint48 expiration
    ) external {
        _requireValidTokenType(tokenType);
        _storeApproval(tokenType, token, id, amount, expiration, msg.sender, operator);
    }

    /**
     * @notice Use a signed permit to increase the allowance for a provided operator
     * @notice This function is compatible with ERC20, ERC721 and ERC1155
     * @notice To give unlimited approval for ERC20 and ERC1155, set amount to type(uint200).max
     * @notice When approving an ERC721, you MUST set amount to `1`
     * @notice When approving an ERC20, you MUST set id to `0`
     * @notice An `approvalExpiration` of zero is considered an atomic permit which will use the 
     * @notice current block time as the expiration time when storing the permit data.
     *
     * @dev    - Throws if the permit has expired
     * @dev    - Throws if the permit's nonce has already been used
     * @dev    - Throws if the permit signature is does not recover to the provided owner
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Updates the approval for an operator to use an amount of a specific token / ID combination
     * @dev    3. Sets the expiration of the approval to the expiration timestamp of the permit
     * @dev    4. If the provided amount is type(uint200).max, the approval is unlimited
     *
     * @param  tokenType            The type of token being approved - must be 20, 721 or 1155.
     * @param  token                Address of the token to approve
     * @param  id                   The token ID
     * @param  nonce                The nonce of the permit
     * @param  amount               The amount of tokens to approve
     * @param  operator             The address of the operator
     * @param  approvalExpiration   The expiration timestamp of the approval
     * @param  sigDeadline          The deadline timestamp for the permit signature
     * @param  owner                The owner of the tokens
     * @param  signedPermit         The permit signature, signed by the owner
     */
    function updateApprovalBySignature(
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 nonce,
        uint200 amount,
        address operator,
        uint48 approvalExpiration,
        uint48 sigDeadline,
        address owner,
        bytes calldata signedPermit
    ) external {
        if (block.timestamp > sigDeadline) {
            revert PermitC__ApprovalTransferPermitExpiredOrUnset();
        }
        _requireValidTokenType(tokenType);
        _checkAndInvalidateNonce(owner, nonce);
        _verifyPermitSignature(
            _hashTypedDataV4(
                PermitHash.hashOnChainApproval(
                    tokenType,
                    token,
                    id,
                    amount,
                    nonce,
                    operator,
                    approvalExpiration,
                    sigDeadline,
                    _masterNonces[owner]
                )
            ),
            signedPermit, 
            owner
        );

        // Expiration of zero is considered an atomic permit which is only valid in the 
        // current block.
        approvalExpiration = approvalExpiration == 0 ? uint48(block.timestamp) : approvalExpiration;

        _storeApproval(tokenType, token, id, amount, approvalExpiration, owner, operator);
    }

    /**
     * @notice Returns the amount of allowance an operator has and it's expiration for a specific token and id
     * @notice If the expiration on the allowance has expired, returns 0
     * @notice To retrieve allowance for ERC20, set id to `0`
     * 
     * @param  owner     The owner of the token
     * @param  operator  The operator of the token
     * @param  tokenType The type of token the allowance is for
     * @param  token     The address of the token contract
     * @param  id        The token ID
     *
     * @return allowedAmount The amount of allowance the operator has
     * @return expiration    The expiration timestamp of the allowance
     */
    function allowance(
        address owner, 
        address operator, 
        uint256 tokenType,
        address token, 
        uint256 id
    ) external view returns (uint256 allowedAmount, uint256 expiration) {
        return _allowance(_transferApprovals, owner, operator, tokenType, token, id, ZERO_BYTES32);
    }

    /**
     * =================================================
     * ================ Signed Transfers ===============
     * =================================================
     */

    /**
     * @notice Registers the combination of a provided string with the `SINGLE_USE_PERMIT_TRANSFER_ADVANCED_TYPEHASH_STUB` 
     * @notice and `PERMIT_ORDER_ADVANCED_TYPEHASH_STUB` to create valid additional data hashes
     *
     * @dev    This function prevents malicious actors from changing the label of the EIP712 hash
     * @dev    to a value that would fool an external user into signing a different message.
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. The provided string is combined with the `SINGLE_USE_PERMIT_TRANSFER_ADVANCED_TYPEHASH_STUB` string
     * @dev    2. The combined string is hashed using keccak256
     * @dev    3. The resulting hash is added to the `_registeredTransferHashes` mapping
     * @dev    4. The provided string is combined with the `PERMIT_ORDER_ADVANCED_TYPEHASH_STUB` string
     * @dev    5. The combined string is hashed using keccak256
     * @dev    6. The resulting hash is added to the `_registeredOrderHashes` mapping
     *
     * @param  additionalDataTypeString The string to register as a valid additional data hash
     */
    function registerAdditionalDataHash(string calldata additionalDataTypeString) external {
        _registeredTransferHashes[
            keccak256(
                bytes(
                    string.concat(
                        SINGLE_USE_PERMIT_TRANSFER_ADVANCED_TYPEHASH_STUB, 
                        additionalDataTypeString
                    )
                )
            )
        ] = true;

        _registeredOrderHashes[
            keccak256(
                bytes(
                    string.concat(
                        PERMIT_ORDER_ADVANCED_TYPEHASH_STUB, 
                        additionalDataTypeString
                    )
                )
            )
        ] = true;
    }

    /**
     * @notice Transfer an ERC721 token from the owner to the recipient using a permit signature.
     *
     * @dev    Be advised that the permitted amount for ERC721 is always inferred to be 1, so signed permitted amount
     * @dev    MUST always be set to 1.
     *
     * @dev    - Throws if the permit is expired
     * @dev    - Throws if the nonce has already been used
     * @dev    - Throws if the permit is not signed by the owner
     * @dev    - Throws if the requested amount exceeds the permitted amount
     * @dev    - Throws if the provided token address does not implement ERC721 transferFrom function
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token from the owner to the recipient
     * @dev    2. The nonce of the permit is marked as used
     * @dev    3. Performs any additional checks in the before and after hooks
     *
     * @param token         The address of the token
     * @param id            The ID of the token
     * @param nonce         The nonce of the permit
     * @param expiration    The expiration timestamp of the permit
     * @param owner         The owner of the token
     * @param to            The address to transfer the tokens to
     * @param signedPermit  The permit signature, signed by the owner
     *
     * @return isError      True if the transfer failed, false otherwise
     */
    function permitTransferFromERC721(
        address token,
        uint256 id,
        uint256 nonce,
        uint256 expiration,
        address owner,
        address to,
        bytes calldata signedPermit
    ) external returns (bool isError) {
        _requireNotPaused(PAUSABLE_PERMITTED_TRANSFER_FROM_ERC721);

        _checkPermitApproval(TOKEN_TYPE_ERC721, token, id, ONE, nonce, expiration, owner, ONE, signedPermit);
        isError = _transferFromERC721(owner, to, token, id);

        if (isError) {
            _restoreNonce(owner, nonce);
        }
    }


    /**
     * @notice Transfers an ERC721 token from the owner to the recipient using a permit signature
     * @notice This function includes additional data to verify on the signature, allowing
     * @notice protocols to extend the validation in one function call. NOTE: before calling this 
     * @notice function you MUST register the stub end of the additional data typestring using
     * @notice the `registerAdditionalDataHash` function.
     *
     * @dev    Be advised that the permitted amount for ERC721 is always inferred to be 1, so signed permitted amount
     * @dev    MUST always be set to 1.
     *
     * @dev    - Throws for any reason permitTransferFromERC721 would.
     * @dev    - Throws if the additional data does not match the signature
     * @dev    - Throws if the provided hash has not been registered as a valid additional data hash
     * @dev    - Throws if the provided hash does not match the provided additional data
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token from the owner to the recipient
     * @dev    2. Performs any additional checks in the before and after hooks
     * @dev    3. The nonce of the permit is marked as used
     * 
     * @param  token                    The address of the token
     * @param  id                       The ID of the token
     * @param  nonce                    The nonce of the permit
     * @param  expiration               The expiration timestamp of the permit
     * @param  owner                    The owner of the token
     * @param  to                       The address to transfer the tokens to
     * @param  additionalData           The additional data to verify on the signature
     * @param  advancedPermitHash       The hash of the additional data
     * @param  signedPermit             The permit signature, signed by the owner
     *
     * @return isError                  True if the transfer failed, false otherwise
     */
    function permitTransferFromWithAdditionalDataERC721(
        address token,
        uint256 id,
        uint256 nonce,
        uint256 expiration,
        address owner,
        address to,
        bytes32 additionalData,
        bytes32 advancedPermitHash,
        bytes calldata signedPermit
   ) external onlyRegisteredTransferAdvancedTypeHash(advancedPermitHash) returns (bool isError) {
        _requireNotPaused(PAUSABLE_PERMITTED_TRANSFER_FROM_ERC721);

        _checkPermitApprovalWithAdditionalDataERC721(
            token,
            id,
            ONE,
            nonce,
            expiration,
            owner,
            ONE,
            signedPermit,
            additionalData,
            advancedPermitHash
        );
        isError = _transferFromERC721(owner, to, token, id);

        if (isError) {
            _restoreNonce(owner, nonce);
        }
    }

    /**
     * @notice Transfer an ERC1155 token from the owner to the recipient using a permit signature
     *
     * @dev    - Throws if the permit is expired
     * @dev    - Throws if the nonce has already been used
     * @dev    - Throws if the permit is not signed by the owner
     * @dev    - Throws if the requested amount exceeds the permitted amount
     * @dev    - Throws if the provided token address does not implement ERC1155 safeTransferFrom function
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token (in the requested amount) from the owner to the recipient
     * @dev    2. The nonce of the permit is marked as used
     * @dev    3. Performs any additional checks in the before and after hooks
     *
     * @param token           The address of the token
     * @param id              The ID of the token
     * @param nonce           The nonce of the permit
     * @param permitAmount    The amount of tokens permitted by the owner
     * @param expiration      The expiration timestamp of the permit
     * @param owner           The owner of the token
     * @param to              The address to transfer the tokens to
     * @param transferAmount  The amount of tokens to transfer
     * @param signedPermit    The permit signature, signed by the owner
     *
     * @return isError        True if the transfer failed, false otherwise
     */
    function permitTransferFromERC1155(
        address token,
        uint256 id,
        uint256 nonce,
        uint256 permitAmount,
        uint256 expiration,
        address owner,
        address to,
        uint256 transferAmount,
        bytes calldata signedPermit
    ) external returns (bool isError) {
        _requireNotPaused(PAUSABLE_PERMITTED_TRANSFER_FROM_ERC1155);

        _checkPermitApproval(TOKEN_TYPE_ERC1155, token, id, permitAmount, nonce, expiration, owner, transferAmount, signedPermit);
        isError = _transferFromERC1155(token, owner, to, id, transferAmount);

        if (isError) {
            _restoreNonce(owner, nonce);
        }
    }

    /**
     * @notice Transfers a token from the owner to the recipient using a permit signature
     * @notice This function includes additional data to verify on the signature, allowing
     * @notice protocols to extend the validation in one function call. NOTE: before calling this 
     * @notice function you MUST register the stub end of the additional data typestring using
     * @notice the `registerAdditionalDataHash` function.
     *
     * @dev    - Throws for any reason permitTransferFrom would.
     * @dev    - Throws if the additional data does not match the signature
     * @dev    - Throws if the provided hash has not been registered as a valid additional data hash
     * @dev    - Throws if the provided hash does not match the provided additional data
     * @dev    - Throws if the provided hash has not been registered as a valid additional data hash
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token (in the requested amount) from the owner to the recipient
     * @dev    2. Performs any additional checks in the before and after hooks
     * @dev    3. The nonce of the permit is marked as used
     *
     * @param  token                    The address of the token
     * @param  id                       The ID of the token
     * @param  nonce                    The nonce of the permit
     * @param  permitAmount             The amount of tokens permitted by the owner
     * @param  expiration               The expiration timestamp of the permit
     * @param  owner                    The owner of the token
     * @param  to                       The address to transfer the tokens to
     * @param  transferAmount           The amount of tokens to transfer
     * @param  additionalData           The additional data to verify on the signature
     * @param  advancedPermitHash       The hash of the additional data
     * @param  signedPermit             The permit signature, signed by the owner
     *
     * @return isError                  True if the transfer failed, false otherwise
     */
    function permitTransferFromWithAdditionalDataERC1155(
        address token,
        uint256 id,
        uint256 nonce,
        uint256 permitAmount,
        uint256 expiration,
        address owner,
        address to,
        uint256 transferAmount,
        bytes32 additionalData,
        bytes32 advancedPermitHash,
        bytes calldata signedPermit
    ) external onlyRegisteredTransferAdvancedTypeHash(advancedPermitHash) returns (bool isError) {
        _requireNotPaused(PAUSABLE_PERMITTED_TRANSFER_FROM_ERC1155);

        _checkPermitApprovalWithAdditionalDataERC1155(
            token,
            id,
            permitAmount,
            nonce,
            expiration,
            owner,
            transferAmount,
            signedPermit,
            additionalData,
            advancedPermitHash
        );
        
        // copy id to top of stack to avoid stack too deep
        uint256 tmpId = id;
        isError = _transferFromERC1155(token, owner, to, tmpId, transferAmount);

        if (isError) {
            _restoreNonce(owner, nonce);
        }
    }

    /**
     * @notice Transfer an ERC20 token from the owner to the recipient using a permit signature.
     *
     * @dev    Be advised that the token ID for ERC20 is always inferred to be 0, so signed token ID
     * @dev    MUST always be set to 0.
     *
     * @dev    - Throws if the permit is expired
     * @dev    - Throws if the nonce has already been used
     * @dev    - Throws if the permit is not signed by the owner
     * @dev    - Throws if the requested amount exceeds the permitted amount
     * @dev    - Throws if the provided token address does not implement ERC20 transferFrom function
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token in the requested amount from the owner to the recipient
     * @dev    2. The nonce of the permit is marked as used
     * @dev    3. Performs any additional checks in the before and after hooks
     *
     * @param token         The address of the token
     * @param nonce         The nonce of the permit
     * @param permitAmount  The amount of tokens permitted by the owner
     * @param expiration    The expiration timestamp of the permit
     * @param owner         The owner of the token
     * @param to            The address to transfer the tokens to
     * @param signedPermit  The permit signature, signed by the owner
     *
     * @return isError      True if the transfer failed, false otherwise
     */
    function permitTransferFromERC20(
        address token,
        uint256 nonce,
        uint256 permitAmount,
        uint256 expiration,
        address owner,
        address to,
        uint256 transferAmount,
        bytes calldata signedPermit
    ) external returns (bool isError) {
        _requireNotPaused(PAUSABLE_PERMITTED_TRANSFER_FROM_ERC20);

        _checkPermitApproval(TOKEN_TYPE_ERC20, token, ZERO, permitAmount, nonce, expiration, owner, transferAmount, signedPermit);
        isError = _transferFromERC20(token, owner, to, ZERO, transferAmount);

        if (isError) {
            _restoreNonce(owner, nonce);
        }
    }

    /**
     * @notice Transfers an ERC20 token from the owner to the recipient using a permit signature
     * @notice This function includes additional data to verify on the signature, allowing
     * @notice protocols to extend the validation in one function call. NOTE: before calling this 
     * @notice function you MUST register the stub end of the additional data typestring using
     * @notice the `registerAdditionalDataHash` function.
     *
     * @dev    Be advised that the token ID for ERC20 is always inferred to be 0, so signed token ID
     * @dev    MUST always be set to 0.
     *
     * @dev    - Throws for any reason permitTransferFromERC20 would.
     * @dev    - Throws if the additional data does not match the signature
     * @dev    - Throws if the provided hash has not been registered as a valid additional data hash
     * @dev    - Throws if the provided hash does not match the provided additional data
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token (in the requested amount) from the owner to the recipient
     * @dev    2. Performs any additional checks in the before and after hooks
     * @dev    3. The nonce of the permit is marked as used
     *
     * @param  token                    The address of the token
     * @param  nonce                    The nonce of the permit
     * @param  permitAmount             The amount of tokens permitted by the owner
     * @param  expiration               The expiration timestamp of the permit
     * @param  owner                    The owner of the token
     * @param  to                       The address to transfer the tokens to
     * @param  transferAmount           The amount of tokens to transfer
     * @param  additionalData           The additional data to verify on the signature
     * @param  advancedPermitHash       The hash of the additional data
     * @param  signedPermit             The permit signature, signed by the owner
     *
     * @return isError                  True if the transfer failed, false otherwise
     */
    function permitTransferFromWithAdditionalDataERC20(
        address token,
        uint256 nonce,
        uint256 permitAmount,
        uint256 expiration,
        address owner,
        address to,
        uint256 transferAmount,
        bytes32 additionalData,
        bytes32 advancedPermitHash,
        bytes calldata signedPermit
    ) external onlyRegisteredTransferAdvancedTypeHash(advancedPermitHash) returns (bool isError) {
        _requireNotPaused(PAUSABLE_PERMITTED_TRANSFER_FROM_ERC20);

        _checkPermitApprovalWithAdditionalDataERC20(
            token,
            ZERO,
            permitAmount,
            nonce,
            expiration,
            owner,
            transferAmount,
            signedPermit,
            additionalData,
            advancedPermitHash
        );
        isError = _transferFromERC20(token, owner, to, ZERO, transferAmount);

        if (isError) {
            _restoreNonce(owner, nonce);
        }
    }

    /**
     * @notice Returns true if the provided hash has been registered as a valid additional data hash for transfers.
     *
     * @param  hash The hash to check
     *
     * @return isRegistered true if the hash is valid, false otherwise
     */
    function isRegisteredTransferAdditionalDataHash(bytes32 hash) external view returns (bool isRegistered) {
        isRegistered = _registeredTransferHashes[hash];
    }

    /**
     * @notice Returns true if the provided hash has been registered as a valid additional data hash for orders.
     *
     * @param  hash The hash to check
     *
     * @return isRegistered true if the hash is valid, false otherwise
     */
    function isRegisteredOrderAdditionalDataHash(bytes32 hash) external view returns (bool isRegistered) {
        isRegistered = _registeredOrderHashes[hash];
    }

    /**
     * =================================================
     * =============== Order Transfers =================
     * =================================================
     */

    /**
     * @notice Transfers an ERC1155 token from the owner to the recipient using a permit signature
     * @notice Order transfers are used to transfer a specific amount of a token from a specific order
     * @notice and allow for multiple uses of the same permit up to the allocated amount. NOTE: before calling this 
     * @notice function you MUST register the stub end of the additional data typestring using
     * @notice the `registerAdditionalDataHash` function.
     *
     * @dev    - Throws if the permit is expired
     * @dev    - Throws if the permit is not signed by the owner
     * @dev    - Throws if the requested amount + amount already filled exceeds the permitted amount
     * @dev    - Throws if the requested amount is less than the minimum fill amount
     * @dev    - Throws if the provided token address does not implement ERC1155 safeTransferFrom function
     * @dev    - Throws if the provided advanced permit hash has not been registered
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token (in the requested amount) from the owner to the recipient
     * @dev    2. Updates the amount filled for the order ID
     * @dev    3. If completely filled, marks the order as filled
     * 
     * @param  signedPermit         The permit signature, signed by the owner
     * @param  orderFillAmounts     The amount of tokens to transfer
     * @param  token                The address of the token
     * @param  id                   The ID of the token
     * @param  owner                The owner of the token
     * @param  to                   The address to transfer the tokens to
     * @param  salt                 The salt of the permit
     * @param  expiration           The expiration timestamp of the permit
     * @param  orderId              The order ID
     * @param  advancedPermitHash   The hash of the additional data
     *
     * @return quantityFilled       The amount of tokens filled
     * @return isError              True if the transfer failed, false otherwise
     */
    function fillPermittedOrderERC1155(
        bytes calldata signedPermit,
        OrderFillAmounts calldata orderFillAmounts,
        address token,
        uint256 id,
        address owner,
        address to,
        uint256 salt,
        uint48 expiration,
        bytes32 orderId,
        bytes32 advancedPermitHash
    ) external onlyRegisteredOrderAdvancedTypeHash(advancedPermitHash) returns (uint256 quantityFilled, bool isError) {
        _requireNotPaused(PAUSABLE_ORDER_TRANSFER_FROM_ERC1155);

        PackedApproval storage orderStatus = _checkOrderTransferERC1155(
            signedPermit,
            orderFillAmounts,
            token,
            id,
            owner,
            salt,
            expiration,
            orderId,
            advancedPermitHash
        );

        (
            quantityFilled,
            isError
        ) = _orderTransfer(
                orderStatus,
                orderFillAmounts,
                token, 
                id, 
                owner, 
                to, 
                orderId,
                _transferFromERC1155
        );

        if (isError) {
            _restoreFillableItems(orderStatus, owner, orderId, quantityFilled, true);
        }
    }

    /**
     * @notice Transfers an ERC20 token from the owner to the recipient using a permit signature
     * @notice Order transfers are used to transfer a specific amount of a token from a specific order
     * @notice and allow for multiple uses of the same permit up to the allocated amount. NOTE: before calling this
     * @notice function you MUST register the stub end of the additional data typestring using
     * @notice the `registerAdditionalDataHash` function.
     *
     * @dev    - Throws if the permit is expired
     * @dev    - Throws if the permit is not signed by the owner
     * @dev    - Throws if the requested amount + amount already filled exceeds the permitted amount
     * @dev    - Throws if the requested amount is less than the minimum fill amount
     * @dev    - Throws if the provided token address does not implement ERC20 transferFrom function
     * @dev    - Throws if the provided advanced permit hash has not been registered
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token (in the requested amount) from the owner to the recipient
     * @dev    2. Updates the amount filled for the order ID
     * @dev    3. If completely filled, marks the order as filled
     *
     * @param  signedPermit         The permit signature, signed by the owner
     * @param  orderFillAmounts     The amount of tokens to transfer
     * @param  token                The address of the token
     * @param  owner                The owner of the token
     * @param  to                   The address to transfer the tokens to
     * @param  salt                 The salt of the permit
     * @param  expiration           The expiration timestamp of the permit
     * @param  orderId              The order ID
     * @param  advancedPermitHash   The hash of the additional data
     *
     * @return quantityFilled       The amount of tokens filled
     * @return isError              True if the transfer failed, false otherwise
     */
    function fillPermittedOrderERC20(
        bytes calldata signedPermit,
        OrderFillAmounts calldata orderFillAmounts,
        address token,
        address owner,
        address to,
        uint256 salt,
        uint48 expiration,
        bytes32 orderId,
        bytes32 advancedPermitHash
    ) external onlyRegisteredOrderAdvancedTypeHash(advancedPermitHash) returns (uint256 quantityFilled, bool isError) {
        _requireNotPaused(PAUSABLE_ORDER_TRANSFER_FROM_ERC20);

        PackedApproval storage orderStatus = _checkOrderTransferERC20(
            signedPermit,
            orderFillAmounts,
            token,
            ZERO,
            owner,
            salt,
            expiration,
            orderId,
            advancedPermitHash
        );

        (
            quantityFilled,
            isError
        ) = _orderTransfer(
                orderStatus,
                orderFillAmounts,
                token, 
                ZERO, 
                owner, 
                to, 
                orderId,
                _transferFromERC20
        );

        if (isError) {
            _restoreFillableItems(orderStatus, owner, orderId, quantityFilled, true);
        }
    }

    /**
     * @notice Closes an outstanding order to prevent further execution of transfers.
     *
     * @dev    - Throws if the order is not in the open state
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Marks the order as cancelled
     * @dev    2. Sets the order amount to 0
     * @dev    3. Sets the order expiration to 0
     * @dev    4. Emits a OrderClosed event
     *
     * @param  owner      The owner of the token
     * @param  operator   The operator allowed to transfer the token
     * @param  tokenType  The type of token the order is for - must be 20, 721 or 1155.
     * @param  token      The address of the token contract
     * @param  id         The token ID
     * @param  orderId    The order ID
     */
    function closePermittedOrder(
        address owner,
        address operator,
        uint256 tokenType,
        address token,
        uint256 id,
        bytes32 orderId
    ) external {
        if(!(msg.sender == owner || msg.sender == operator)) {
            revert PermitC__CallerMustBeOwnerOrOperator();
        }
        _requireValidTokenType(tokenType);
        PackedApproval storage orderStatus = _getPackedApprovalPtr(_orderApprovals, owner, tokenType, token, id, orderId, operator);
    
        if (orderStatus.state == ORDER_STATE_OPEN) {
            orderStatus.state = ORDER_STATE_CANCELLED;
            orderStatus.amount = 0;
            orderStatus.expiration = 0;
            emit OrderClosed(orderId, owner, operator, true);
        } else {
            revert PermitC__OrderIsEitherCancelledOrFilled();
        }
    }

    /**
     * @notice Returns the amount of allowance an operator has for a specific token and id
     * @notice If the expiration on the allowance has expired, returns 0
     *
     * @dev    Overload of the on chain allowance function for approvals with a specified order ID
     * 
     * @param  owner    The owner of the token
     * @param  operator The operator of the token
     * @param  token    The address of the token contract
     * @param  id       The token ID
     *
     * @return allowedAmount The amount of allowance the operator has
     */
    function allowance(
        address owner, 
        address operator, 
        uint256 tokenType,
        address token, 
        uint256 id, 
        bytes32 orderId
    ) external view returns (uint256 allowedAmount, uint256 expiration) {
        return _allowance(_orderApprovals, owner, operator, tokenType, token, id, orderId);
    }

    /**
     * =================================================
     * ================ Nonce Management ===============
     * =================================================
     */

    /**
     * @notice Invalidates the provided nonce
     *
     * @dev    - Throws if the provided nonce has already been used
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Sets the provided nonce as used for the sender
     *
     * @param  nonce Nonce to invalidate
     */
    function invalidateUnorderedNonce(uint256 nonce) external {
        _checkAndInvalidateNonce(msg.sender, nonce);
    }

    /**
     * @notice Returns if the provided nonce has been used
     *
     * @param  owner The owner of the token
     * @param  nonce The nonce to check
     *
     * @return isValid true if the nonce is valid, false otherwise
     */
    function isValidUnorderedNonce(address owner, uint256 nonce) external view returns (bool isValid) {
        isValid = ((_unorderedNonces[owner][uint248(nonce >> 8)] >> uint8(nonce)) & ONE) == ZERO;
    }

    /**
     * @notice Revokes all outstanding approvals for the sender
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Increments the master nonce for the sender
     * @dev    2. All outstanding approvals for the sender are invalidated
     */
    function lockdown() external {
        unchecked {
            _masterNonces[msg.sender]++;
        }

        emit Lockdown(msg.sender);
    }

    /**
     * @notice Returns the master nonce for the provided owner address
     *
     * @param  owner The owner address
     *
     * @return The master nonce
     */
    function masterNonce(address owner) external view returns (uint256) {
        return _masterNonces[owner];
    }

    /**
     * =================================================
     * ============== Transfer Functions ===============
     * =================================================
     */

    /**
     * @notice Transfer an ERC721 token from the owner to the recipient using on chain approvals
     *
     * @dev    Public transfer function overload for approval transfers
     * @dev    - Throws if the provided token address does not implement ERC721 transferFrom function
     * @dev    - Throws if the requested amount exceeds the approved amount
     * @dev    - Throws if the approval is expired
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token (in the requested amount) from the owner to the recipient
     * @dev    2. Decrements the approval amount by the requested amount
     * @dev    3. Performs any additional checks in the before and after hooks
     *
     * @param  owner    The owner of the token
     * @param  to       The recipient of the token
     * @param  token    The address of the token
     * @param  id       The id of the token
     *
     * @return isError  True if the transfer failed, false otherwise
     */
    function transferFromERC721(
        address owner,
        address to,
        address token,
        uint256 id
    ) external returns (bool isError) {
        _requireNotPaused(PAUSABLE_APPROVAL_TRANSFER_FROM_ERC721);

        PackedApproval storage approval = _checkAndUpdateApproval(owner, TOKEN_TYPE_ERC721, token, id, ONE, true);
        isError = _transferFromERC721(owner, to, token, id);

        if (isError) {
            _restoreFillableItems(approval, owner, ZERO_BYTES32, ONE, false);
        }
    }

    /**
     * @notice Transfer an ERC1155 token from the owner to the recipient using on chain approvals
     *
     * @dev    Public transfer function overload for approval transfers
     * @dev    - Throws if the provided token address does not implement ERC1155 safeTransferFrom function
     * @dev    - Throws if the requested amount exceeds the approved amount
     * @dev    - Throws if the approval is expired
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token (in the requested amount) from the owner to the recipient
     * @dev    2. Decrements the approval amount by the requested amount
     * @dev    3. Performs any additional checks in the before and after hooks
     *
     * @param  owner     The owner of the token
     * @param  to       The recipient of the token
     * @param  amount   The amount of the token to transfer
     * @param  token    The address of the token
     * @param  id       The id of the token
     *
     * @return isError  True if the transfer failed, false otherwise
     */
    function transferFromERC1155(
        address owner,
        address to,
        address token,
        uint256 id,
        uint256 amount
    ) external returns (bool isError) {
        _requireNotPaused(PAUSABLE_APPROVAL_TRANSFER_FROM_ERC1155);

        PackedApproval storage approval = _checkAndUpdateApproval(owner, TOKEN_TYPE_ERC1155, token, id, amount, false);
        isError = _transferFromERC1155(token, owner, to, id, amount);

        if (isError) {
            _restoreFillableItems(approval, owner, ZERO_BYTES32, amount, false);
        }
    }

    /**
     * @notice Transfer an ERC20 token from the owner to the recipient using on chain approvals
     *
     * @dev    Public transfer function overload for approval transfers
     * @dev    - Throws if the provided token address does not implement ERC20 transferFrom function
     * @dev    - Throws if the requested amount exceeds the approved amount
     * @dev    - Throws if the approval is expired
     * @dev    - Returns `false` if the transfer fails
     *
     * @dev    <h4>Postconditions:</h4>
     * @dev    1. Transfers the token (in the requested amount) from the owner to the recipient
     * @dev    2. Decrements the approval amount by the requested amount
     * @dev    3. Performs any additional checks in the before and after hooks
     *
     * @param  owner     The owner of the token
     * @param  to       The recipient of the token
     * @param  amount   The amount of the token to transfer
     * @param  token    The address of the token
     *
     * @return isError  True if the transfer failed, false otherwise
     */
    function transferFromERC20(
        address owner,
        address to,
        address token,
        uint256 amount
    ) external returns (bool isError) {
        _requireNotPaused(PAUSABLE_APPROVAL_TRANSFER_FROM_ERC20);

        PackedApproval storage approval = _checkAndUpdateApproval(owner, TOKEN_TYPE_ERC20, token, ZERO, amount, false);
        isError = _transferFromERC20(token, owner, to, ZERO, amount);

        if (isError) {
            _restoreFillableItems(approval, owner, ZERO_BYTES32, amount, false);
        }
    }

    /**
     * @notice  Performs a transfer of an ERC721 token.
     * 
     * @dev     Will **NOT** attempt transfer if `_beforeTransferFrom` hook returns false.
     * @dev     Will **NOT** revert if the transfer is unsucessful.
     * @dev     Invokers **MUST** check `isError` return value to determine success.
     * 
     * @param owner  The owner of the token being transferred
     * @param to     The address to transfer the token to
     * @param token  The token address of the token being transferred
     * @param id     The token id being transferred
     * 
     * @return isError True if the token was not transferred, false if token was transferred
     */
    function _transferFromERC721(
        address owner,
        address to,
        address token,
        uint256 id
    ) private returns (bool isError) {
        isError = _beforeTransferFrom(TOKEN_TYPE_ERC721, token, owner, to, id, ONE);

        if (!isError) {
            try IERC721(token).transferFrom(owner, to, id) { } 
            catch {
                isError = true;
            }
        }
    }

    /**
     * @notice  Performs a transfer of an ERC1155 token.
     * 
     * @dev     Will **NOT** attempt transfer if `_beforeTransferFrom` hook returns false.
     * @dev     Will **NOT** revert if the transfer is unsucessful.
     * @dev     Invokers **MUST** check `isError` return value to determine success.
     * 
     * @param token  The token address of the token being transferred
     * @param owner  The owner of the token being transferred
     * @param to     The address to transfer the token to
     * @param id     The token id being transferred
     * @param amount The quantity of token id to transfer
     * 
     * @return isError True if the token was not transferred, false if token was transferred
     */
    function _transferFromERC1155(
        address token,
        address owner,
        address to,
        uint256 id,
        uint256 amount
    ) private returns (bool isError) {
        isError = _beforeTransferFrom(TOKEN_TYPE_ERC1155, token, owner, to, id, amount);

        if (!isError) {
            try IERC1155(token).safeTransferFrom(owner, to, id, amount, "") { } catch {
                isError = true;
            }
        }
    }

    /**
     * @notice  Performs a transfer of an ERC20 token.
     * 
     * @dev     Will **NOT** attempt transfer if `_beforeTransferFrom` hook returns false.
     * @dev     Will **NOT** revert if the transfer is unsucessful.
     * @dev     Invokers **MUST** check `isError` return value to determine success.
     * 
     * @param token  The token address of the token being transferred
     * @param owner  The owner of the token being transferred
     * @param to     The address to transfer the token to
     * @param amount The quantity of token id to transfer
     * 
     * @return isError True if the token was not transferred, false if token was transferred
     */
    function _transferFromERC20(
        address token,
        address owner,
        address to,
        uint256 /*id*/,
        uint256 amount
      ) private returns (bool isError) {
        isError = _beforeTransferFrom(TOKEN_TYPE_ERC20, token, owner, to, ZERO, amount);

        if (!isError) {
            (bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.transferFrom.selector, owner, to, amount));
            if (!success) {
                isError = true;
            } else if (data.length > 0) {
                isError = !abi.decode(data, (bool));
            }
        }
    }

    /**
     * =================================================
     * ============ Signature Verification =============
     * =================================================
     */

    /**
     * @notice Returns the domain separator used in the permit signature
     *
     * @return domainSeparator The domain separator
     */
    function domainSeparatorV4() external view returns (bytes32 domainSeparator) {
        domainSeparator = _domainSeparatorV4();
    }

    /**
     * @notice  Verifies a permit signature based on the bytes length of the signature provided.
     * 
     * @dev     Throws when -
     * @dev         The bytes signature length is 64 or 65 bytes AND
     * @dev         The ECDSA recovered signer is not the owner AND
     * @dev         The owner's code length is zero OR the owner does not return a valid EIP-1271 response
     * @dev 
     * @dev         OR
     * @dev
     * @dev         The bytes signature length is not 64 or 65 bytes AND
     * @dev         The owner's code length is zero OR the owner does not return a valid EIP-1271 response
     */
    function _verifyPermitSignature(bytes32 digest, bytes calldata signature, address owner) private view {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // Divide the signature in r, s and v variables
            /// @solidity memory-safe-assembly
            assembly {
                r := calldataload(signature.offset)
                s := calldataload(add(signature.offset, 32))
                v := byte(0, calldataload(add(signature.offset, 64)))
            }
            (bool isError, address signer) = _ecdsaRecover(digest, v, r, s);
            if (owner != signer || isError) {
                _verifyEIP1271Signature(owner, digest, signature);
            }
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // Divide the signature in r and vs variables
            /// @solidity memory-safe-assembly
            assembly {
                r := calldataload(signature.offset)
                vs := calldataload(add(signature.offset, 32))
            }
            (bool isError, address signer) = _ecdsaRecover(digest, r, vs);
            if (owner != signer || isError) {
                _verifyEIP1271Signature(owner, digest, signature);
            }
        } else {
            _verifyEIP1271Signature(owner, digest, signature);
        }
    }

    /**
     * @notice Verifies an EIP-1271 signature.
     * 
     * @dev    Throws when `signer` code length is zero OR the EIP-1271 call does not
     * @dev    return the correct magic value.
     * 
     * @param signer     The signer address to verify a signature with
     * @param hash       The hash digest to verify with the signer
     * @param signature  The signature to verify
     */
    function _verifyEIP1271Signature(address signer, bytes32 hash, bytes calldata signature) private view {
        if(signer.code.length == 0) {
            revert PermitC__SignatureTransferInvalidSignature();
        }

        if (!_safeIsValidSignature(signer, hash, signature)) {
            revert PermitC__SignatureTransferInvalidSignature();
        }
    }

    /**
     * @notice  Overload of the `_ecdsaRecover` function to unpack the `v` and `s` values
     * 
     * @param digest    The hash digest that was signed
     * @param r         The `r` value of the signature
     * @param vs        The packed `v` and `s` values of the signature
     * 
     * @return isError  True if the ECDSA function is provided invalid inputs
     * @return signer   The recovered address from ECDSA
     */
    function _ecdsaRecover(bytes32 digest, bytes32 r, bytes32 vs) private pure returns (bool isError, address signer) {
        unchecked {
            bytes32 s = vs & UPPER_BIT_MASK;
            uint8 v = uint8(uint256(vs >> 255)) + 27;

            (isError, signer) = _ecdsaRecover(digest, v, r, s);
        }
    }

    /**
     * @notice  Recovers the signer address using ECDSA
     * 
     * @dev     Does **NOT** revert if invalid input values are provided or `signer` is recovered as address(0)
     * @dev     Returns an `isError` value in those conditions that is handled upstream
     * 
     * @param digest    The hash digest that was signed
     * @param v         The `v` value of the signature
     * @param r         The `r` value of the signature
     * @param s         The `s` value of the signature
     * 
     * @return isError  True if the ECDSA function is provided invalid inputs
     * @return signer   The recovered address from ECDSA
     */
    function _ecdsaRecover(bytes32 digest, uint8 v, bytes32 r, bytes32 s) private pure returns (bool isError, address signer) {
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            // Invalid signature `s` value - return isError = true and signer = address(0) to check EIP-1271
            return (true, address(0));
        }

        signer = ecrecover(digest, v, r, s);
        isError = (signer == address(0));
    }

    /**
     * @notice A gas efficient, and fallback-safe way to call the isValidSignature function for EIP-1271.
     *
     * @param signer     The EIP-1271 signer to call to check for a valid signature.
     * @param hash       The hash digest to verify with the EIP-1271 signer.
     * @param signature  The supplied signature to verify.
     * 
     * @return isValid   True if the EIP-1271 signer returns the EIP-1271 magic value.
     */
    function _safeIsValidSignature(
        address signer,
        bytes32 hash,
        bytes calldata signature
    ) private view returns(bool isValid) {
        assembly {
            function _callIsValidSignature(_signer, _hash, _signatureOffset, _signatureLength) -> _isValid {
                let ptr := mload(0x40)
                // store isValidSignature(bytes32,bytes) selector
                mstore(ptr, hex"1626ba7e")
                // store bytes32 hash value in abi encoded location
                mstore(add(ptr, 0x04), _hash)
                // store abi encoded location of the bytes signature data
                mstore(add(ptr, 0x24), 0x40)
                // store bytes signature length
                mstore(add(ptr, 0x44), _signatureLength)
                // copy calldata bytes signature to memory
                calldatacopy(add(ptr, 0x64), _signatureOffset, _signatureLength)
                // calculate data length based on abi encoded data with rounded up signature length
                let dataLength := add(0x64, and(add(_signatureLength, 0x1F), not(0x1F)))
                // update free memory pointer
                mstore(0x40, add(ptr, dataLength))

                // static call _signer with abi encoded data
                // skip return data check if call failed or return data size is not at least 32 bytes
                if and(iszero(lt(returndatasize(), 0x20)), staticcall(gas(), _signer, ptr, dataLength, 0x00, 0x20)) {
                    // check if return data is equal to isValidSignature magic value
                    _isValid := eq(mload(0x00), hex"1626ba7e")
                    leave
                }
            }
            isValid := _callIsValidSignature(signer, hash, signature.offset, signature.length)
        }
    }

    /**
     * =================================================
     * ===================== Hooks =====================
     * =================================================
     */

    /**
     * @dev    This function is empty by default. Override it to add additional logic after the approval transfer.
     * @dev    The function returns a boolean value instead of reverting to indicate if there is an error for more granular control in inheriting protocols.
     */
    function _beforeTransferFrom(uint256 tokenType, address token, address owner, address to, uint256 id, uint256 amount) internal virtual returns (bool isError) {}

    /**
     * =================================================
     * ==================== Internal ===================
     * =================================================
     */

    /**
     * @notice Checks if an advanced permit typehash has been registered with PermitC
     * 
     * @dev    Throws when the typehash has not been registered
     * 
     * @param advancedPermitHash  The permit typehash to check
     */
    function _requireTransferAdvancedPermitHashIsRegistered(bytes32 advancedPermitHash) private view {
        if (!_registeredTransferHashes[advancedPermitHash]) {
            revert PermitC__SignatureTransferPermitHashNotRegistered();
        }
    }

    /**
     * @notice Checks if an advanced permit typehash has been registered with PermitC
     * 
     * @dev    Throws when the typehash has not been registered
     * 
     * @param advancedPermitHash  The permit typehash to check
     */
    function _requireOrderAdvancedPermitHashIsRegistered(bytes32 advancedPermitHash) private view {
        if (!_registeredOrderHashes[advancedPermitHash]) {
            revert PermitC__SignatureTransferPermitHashNotRegistered();
        }
    }

    /**
     * @notice  Invalidates an account nonce if it has not been previously used
     * 
     * @dev     Throws when the nonce was previously used
     * 
     * @param account  The account to invalidate the nonce of
     * @param nonce    The nonce to invalidate
     */
    function _checkAndInvalidateNonce(address account, uint256 nonce) private {
        unchecked {
            if (uint256(_unorderedNonces[account][uint248(nonce >> 8)] ^= (ONE << uint8(nonce))) & 
                (ONE << uint8(nonce)) == ZERO) {
                revert PermitC__NonceAlreadyUsedOrRevoked();
            }
        }
    }

    /**
     * @notice Checks an approval to ensure it is sufficient for the `amount` to send
     * 
     * @dev    Throws when the approval is expired
     * @dev    Throws when the approved amount is insufficient
     * 
     * @param owner            The owner of the token
     * @param tokenType        The type of token
     * @param token            The address of the token
     * @param id               The id of the token
     * @param amount           The amount to deduct from the approval
     * @param zeroOutApproval  True if the approval should be set to zero
     * 
     * @return approval  Storage pointer for the approval data
     */
    function _checkAndUpdateApproval(
        address owner,
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 amount,
        bool zeroOutApproval
    ) private returns (PackedApproval storage approval) {
        approval = _getPackedApprovalPtr(_transferApprovals, owner, tokenType, token, id, ZERO_BYTES32, msg.sender);
        
        if (approval.expiration < block.timestamp) {
            revert PermitC__ApprovalTransferPermitExpiredOrUnset();
        }
        if (approval.amount < amount) {
            revert PermitC__ApprovalTransferExceededPermittedAmount();
        }

        if(zeroOutApproval) {
            approval.amount = 0;
        } else if (approval.amount < type(uint200).max) {
            unchecked {
                approval.amount -= uint200(amount);
            }
        }
    }

    /**
     * @notice  Gets the storage pointer for an approval
     * 
     * @param _approvals  The mapping to retrieve the approval from
     * @param account     The account the approval is from
     * @param tokenType   The type of token the approval is for
     * @param token       The address of the token
     * @param id          The id of the token
     * @param orderId     The order id for the approval
     * @param operator    The operator for the approval
     * 
     * @return approval  Storage pointer for the approval data
     */
    function _getPackedApprovalPtr(
        mapping(bytes32 => mapping(address => PackedApproval)) storage _approvals,
        address account, 
        uint256 tokenType,
        address token, 
        uint256 id,
        bytes32 orderId,
        address operator
    ) private view returns (PackedApproval storage approval) {
        approval = _approvals[_getPackedApprovalKey(account, tokenType, token, id, orderId)][operator];
    }

    /**
     * @notice  Gets the storage key for the mapping for a specific approval
     * 
     * @param owner      The owner of the token
     * @param tokenType  The type of token
     * @param token      The address of the token
     * @param id         The id of the token
     * @param orderId    The order id of the approval
     * 
     * @return key  The key value to use to access the approval in the mapping
     */
    function _getPackedApprovalKey(address owner, uint256 tokenType, address token, uint256 id, bytes32 orderId) private view returns (bytes32 key) {
        key = keccak256(abi.encode(owner, tokenType, token, id, orderId, _masterNonces[owner]));
    }

    /**
     * @notice Checks the permit approval for a single use permit without additional data
     * 
     * @dev    Throws when the `nonce` has already been consumed
     * @dev    Throws when the permit amount is less than the transfer amount
     * @dev    Throws when the permit is expired
     * @dev    Throws when the signature is invalid
     * 
     * @param tokenType       The type of token
     * @param token           The address of the token
     * @param id              The id of the token
     * @param permitAmount    The amount authorized by the owner signature
     * @param nonce           The nonce of the permit
     * @param expiration      The time the permit expires
     * @param owner           The owner of the token
     * @param transferAmount  The amount of tokens requested to transfer
     * @param signedPermit    The signature for the permit
     */
    function _checkPermitApproval(
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 permitAmount,
        uint256 nonce,
        uint256 expiration,
        address owner,
        uint256 transferAmount,
        bytes calldata signedPermit
    ) private {
        bytes32 digest = _hashTypedDataV4(
            PermitHash.hashSingleUsePermit(
                tokenType,
                token,
                id,
                permitAmount,
                nonce,
                expiration,
                _masterNonces[owner]
            )
        );

        _checkPermitData(
            nonce,
            expiration,
            transferAmount,
            permitAmount,
            owner,
            digest,
            signedPermit
        );
    }

    /**
     * @notice  Overload of `_checkPermitApprovalWithAdditionalData` to supply TOKEN_TYPE_ERC1155
     * 
     * @dev     Prevents stack too deep in `permitTransferFromWithAdditionalDataERC1155`
     * @dev     Throws when the `nonce` has already been consumed
     * @dev     Throws when the permit amount is less than the transfer amount
     * @dev     Throws when the permit is expired
     * @dev     Throws when the signature is invalid
     * 
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param permitAmount        The amount authorized by the owner signature
     * @param nonce               The nonce of the permit
     * @param expiration          The time the permit expires
     * @param owner               The owner of the token
     * @param transferAmount      The amount of tokens requested to transfer
     * @param signedPermit        The signature for the permit
     * @param additionalData      The additional data to validate with the permit signature
     * @param advancedPermitHash  The typehash of the permit to use for validating the signature
     */
    function _checkPermitApprovalWithAdditionalDataERC1155(
        address token,
        uint256 id,
        uint256 permitAmount,
        uint256 nonce,
        uint256 expiration,
        address owner,
        uint256 transferAmount,
        bytes calldata signedPermit,
        bytes32 additionalData,
        bytes32 advancedPermitHash
    ) private {
        _checkPermitApprovalWithAdditionalData(
            TOKEN_TYPE_ERC1155,
            token,
            id,
            permitAmount,
            nonce,
            expiration,
            owner,
            transferAmount,
            signedPermit,
            additionalData,
            advancedPermitHash
        );
    }

    /**
     * @notice  Overload of `_checkPermitApprovalWithAdditionalData` to supply TOKEN_TYPE_ERC20
     * 
     * @dev     Prevents stack too deep in `permitTransferFromWithAdditionalDataERC220`
     * @dev     Throws when the `nonce` has already been consumed
     * @dev     Throws when the permit amount is less than the transfer amount
     * @dev     Throws when the permit is expired
     * @dev     Throws when the signature is invalid
     * 
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param permitAmount        The amount authorized by the owner signature
     * @param nonce               The nonce of the permit
     * @param expiration          The time the permit expires
     * @param owner               The owner of the token
     * @param transferAmount      The amount of tokens requested to transfer
     * @param signedPermit        The signature for the permit
     * @param additionalData      The additional data to validate with the permit signature
     * @param advancedPermitHash  The typehash of the permit to use for validating the signature
     */
    function _checkPermitApprovalWithAdditionalDataERC20(
        address token,
        uint256 id,
        uint256 permitAmount,
        uint256 nonce,
        uint256 expiration,
        address owner,
        uint256 transferAmount,
        bytes calldata signedPermit,
        bytes32 additionalData,
        bytes32 advancedPermitHash
    ) private {
        _checkPermitApprovalWithAdditionalData(
            TOKEN_TYPE_ERC20,
            token,
            id,
            permitAmount,
            nonce,
            expiration,
            owner,
            transferAmount,
            signedPermit,
            additionalData,
            advancedPermitHash
        );
    }

    /**
     * @notice  Overload of `_checkPermitApprovalWithAdditionalData` to supply TOKEN_TYPE_ERC721
     * 
     * @dev     Prevents stack too deep in `permitTransferFromWithAdditionalDataERC721`
     * @dev     Throws when the `nonce` has already been consumed
     * @dev     Throws when the permit amount is less than the transfer amount
     * @dev     Throws when the permit is expired
     * @dev     Throws when the signature is invalid
     * 
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param permitAmount        The amount authorized by the owner signature
     * @param nonce               The nonce of the permit
     * @param expiration          The time the permit expires
     * @param owner               The owner of the token
     * @param transferAmount      The amount of tokens requested to transfer
     * @param signedPermit        The signature for the permit
     * @param additionalData      The additional data to validate with the permit signature
     * @param advancedPermitHash  The typehash of the permit to use for validating the signature
     */
    function _checkPermitApprovalWithAdditionalDataERC721(
        address token,
        uint256 id,
        uint256 permitAmount,
        uint256 nonce,
        uint256 expiration,
        address owner,
        uint256 transferAmount,
        bytes calldata signedPermit,
        bytes32 additionalData,
        bytes32 advancedPermitHash
    ) private {
        _checkPermitApprovalWithAdditionalData(
            TOKEN_TYPE_ERC721,
            token,
            id,
            permitAmount,
            nonce,
            expiration,
            owner,
            transferAmount,
            signedPermit,
            additionalData,
            advancedPermitHash
        );
    }

    /**
     * @notice Checks the permit approval for a single use permit with additional data
     * 
     * @dev    Throws when the `nonce` has already been consumed
     * @dev    Throws when the permit amount is less than the transfer amount
     * @dev    Throws when the permit is expired
     * @dev    Throws when the signature is invalid
     * 
     * @param tokenType           The type of token
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param permitAmount        The amount authorized by the owner signature
     * @param nonce               The nonce of the permit
     * @param expiration          The time the permit expires
     * @param owner               The owner of the token
     * @param transferAmount      The amount of tokens requested to transfer
     * @param signedPermit        The signature for the permit
     * @param additionalData      The additional data to validate with the permit signature
     * @param advancedPermitHash  The typehash of the permit to use for validating the signature
     */
    function _checkPermitApprovalWithAdditionalData(
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 permitAmount,
        uint256 nonce,
        uint256 expiration,
        address owner,
        uint256 transferAmount,
        bytes calldata signedPermit,
        bytes32 additionalData,
        bytes32 advancedPermitHash
    ) private {
        bytes32 digest = _getAdvancedTypedDataV4PermitHash(
            tokenType,
            token, 
            id, 
            permitAmount, 
            owner,
            nonce, 
            expiration, 
            additionalData, 
            advancedPermitHash
        );        

        _checkPermitData(
            nonce,
            expiration,
            transferAmount,
            permitAmount,
            owner,
            digest,
            signedPermit
        );
    }

    /**
     * @notice  Checks that a single use permit has not expired, was authorized for the amount
     * @notice  being transferred, has a valid nonce and has a valid signature.
     * 
     * @dev    Throws when the `nonce` has already been consumed
     * @dev    Throws when the permit amount is less than the transfer amount
     * @dev    Throws when the permit is expired
     * @dev    Throws when the signature is invalid
     * 
     * @param nonce           The nonce of the permit
     * @param expiration      The time the permit expires
     * @param transferAmount  The amount of tokens requested to transfer
     * @param permitAmount    The amount authorized by the owner signature
     * @param owner           The owner of the token
     * @param digest          The digest that was signed by the owner
     * @param signedPermit    The signature for the permit
     */
    function _checkPermitData(
        uint256 nonce,
        uint256 expiration, 
        uint256 transferAmount, 
        uint256 permitAmount, 
        address owner, 
        bytes32 digest,
        bytes calldata signedPermit
    ) private {
        if (block.timestamp > expiration) {
            revert PermitC__SignatureTransferExceededPermitExpired();
        }

        if (transferAmount > permitAmount) {
            revert PermitC__SignatureTransferExceededPermittedAmount();
        }

        _checkAndInvalidateNonce(owner, nonce);
        _verifyPermitSignature(digest, signedPermit, owner);
    }

    /**
     * @notice  Stores an approval for future use by `operator` to move tokens on behalf of `owner`
     * 
     * @param tokenType           The type of token
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param amount              The amount authorized by the owner
     * @param expiration          The time the permit expires
     * @param owner               The owner of the token
     * @param operator            The account allowed to transfer the tokens
     */
    function _storeApproval(
        uint256 tokenType,
        address token,
        uint256 id,
        uint200 amount,
        uint48 expiration,
        address owner,
        address operator
    ) private {
        PackedApproval storage approval = _getPackedApprovalPtr(_transferApprovals, owner, tokenType, token, id, ZERO_BYTES32, operator);
        
        approval.expiration = expiration;
        approval.amount = amount;

        emit Approval(owner, token, operator, id, amount, expiration);
    }

    /**
     * @notice  Overload of `_checkOrderTransfer` to supply TOKEN_TYPE_ERC1155
     * 
     * @dev     Prevents stack too deep in `fillPermittedOrderERC1155`
     * @dev     Throws when the order start amount is greater than type(uint200).max
     * @dev     Throws when the order status is not open
     * @dev     Throws when the signature is invalid
     * @dev     Throws when the permit is expired
     * 
     * @param signedPermit        The signature for the permit
     * @param orderFillAmounts    A struct containing the order start, requested fill and minimum fill amounts
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param owner               The owner of the token
     * @param salt                The salt value for the permit
     * @param expiration          The time the permit expires
     * @param orderId             The order id for the permit
     * @param advancedPermitHash  The typehash of the permit to use for validating the signature
     * 
     * @return orderStatus  Storage pointer for the approval data
     */
    function _checkOrderTransferERC1155(
        bytes calldata signedPermit,
        OrderFillAmounts calldata orderFillAmounts,
        address token,
        uint256 id,
        address owner,
        uint256 salt,
        uint48 expiration,
        bytes32 orderId,
        bytes32 advancedPermitHash
    ) private returns (PackedApproval storage orderStatus) {
        orderStatus = _checkOrderTransfer(
            signedPermit,
            orderFillAmounts,
            TOKEN_TYPE_ERC1155,
            token,
            id,
            owner,
            salt,
            expiration,
            orderId,
            advancedPermitHash
        );
    }

    /**
     * @notice  Overload of `_checkOrderTransfer` to supply TOKEN_TYPE_ERC20
     * 
     * @dev     Prevents stack too deep in `fillPermittedOrderERC20`
     * @dev     Throws when the order start amount is greater than type(uint200).max
     * @dev     Throws when the order status is not open
     * @dev     Throws when the signature is invalid
     * @dev     Throws when the permit is expired
     * 
     * @param signedPermit        The signature for the permit
     * @param orderFillAmounts    A struct containing the order start, requested fill and minimum fill amounts
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param owner               The owner of the token
     * @param salt                The salt value for the permit
     * @param expiration          The time the permit expires
     * @param orderId             The order id for the permit
     * @param advancedPermitHash  The typehash of the permit to use for validating the signature
     * 
     * @return orderStatus  Storage pointer for the approval data
     */
    function _checkOrderTransferERC20(
        bytes calldata signedPermit,
        OrderFillAmounts calldata orderFillAmounts,
        address token,
        uint256 id,
        address owner,
        uint256 salt,
        uint48 expiration,
        bytes32 orderId,
        bytes32 advancedPermitHash
    ) private returns (PackedApproval storage orderStatus) {
        orderStatus = _checkOrderTransfer(
            signedPermit,
            orderFillAmounts,
            TOKEN_TYPE_ERC20,
            token,
            id,
            owner,
            salt,
            expiration,
            orderId,
            advancedPermitHash
        );
    }

    /**
     * @notice  Validates an order transfer to check order start amount, status, signature if not previously
     * @notice  opened, and expiration.
     * 
     * @dev     Throws when the order start amount is greater than type(uint200).max
     * @dev     Throws when the order status is not open
     * @dev     Throws when the signature is invalid
     * @dev     Throws when the permit is expired
     * 
     * @param signedPermit        The signature for the permit
     * @param orderFillAmounts    A struct containing the order start, requested fill and minimum fill amounts
     * @param tokenType           The type of token
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param owner               The owner of the token
     * @param salt                The salt value for the permit
     * @param expiration          The time the permit expires
     * @param orderId             The order id for the permit
     * @param advancedPermitHash  The typehash of the permit to use for validating the signature
     * 
     * @return orderStatus  Storage pointer for the approval data
     */
    function _checkOrderTransfer(
        bytes calldata signedPermit,
        OrderFillAmounts calldata orderFillAmounts,
        uint256 tokenType,
        address token,
        uint256 id,
        address owner,
        uint256 salt,
        uint48 expiration,
        bytes32 orderId,
        bytes32 advancedPermitHash
    ) private returns (PackedApproval storage orderStatus) {
        if (orderFillAmounts.orderStartAmount > type(uint200).max) {
            revert PermitC__AmountExceedsStorageMaximum();
        }

        orderStatus = _getPackedApprovalPtr(_orderApprovals, owner, tokenType, token, id, orderId, msg.sender);

        if (orderStatus.state == ORDER_STATE_OPEN) {
            if (orderStatus.amount == 0) {
                _verifyPermitSignature(
                    _getAdvancedTypedDataV4PermitHash(
                        tokenType,
                        token, 
                        id, 
                        orderFillAmounts.orderStartAmount,
                        owner,
                        salt, 
                        expiration, 
                        orderId, 
                        advancedPermitHash
                    ), 
                    signedPermit, 
                    owner
                );

                orderStatus.amount = uint200(orderFillAmounts.orderStartAmount);
                orderStatus.expiration = expiration;   
                emit OrderOpened(orderId, owner, msg.sender, orderFillAmounts.orderStartAmount);
            }

            if (block.timestamp > orderStatus.expiration) {
                revert PermitC__SignatureTransferExceededPermitExpired();
            }
        } else {
            revert PermitC__OrderIsEitherCancelledOrFilled();
        }
    }

    /**
     * @notice  Checks the order fill amounts against approval data and transfers tokens, updates
     * @notice  approval if the fill results in the order being closed.
     * 
     * @dev     Throws when the amount to fill is less than the minimum fill amount
     * 
     * @param orderStatus         Storage pointer for the approval data
     * @param orderFillAmounts    A struct containing the order start, requested fill and minimum fill amounts
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param owner               The owner of the token
     * @param to                  The address to send the tokens to
     * @param orderId             The order id for the permit
     * @param _transferFrom       Function pointer of the transfer function to send tokens with
     * 
     * @return quantityFilled     The number of tokens filled in the order
     * @return isError            True if there was an error transferring tokens, false otherwise
     */
    function _orderTransfer(
        PackedApproval storage orderStatus,
        OrderFillAmounts calldata orderFillAmounts,
        address token,
        uint256 id,
        address owner,
        address to,
        bytes32 orderId,
        function (address, address, address, uint256, uint256) internal returns (bool) _transferFrom
    ) private returns (uint256 quantityFilled, bool isError) {
        quantityFilled = orderFillAmounts.requestedFillAmount;
        
        if (quantityFilled > orderStatus.amount) {
            quantityFilled = orderStatus.amount;
        }

        if (quantityFilled < orderFillAmounts.minimumFillAmount) {
            revert PermitC__UnableToFillMinimumRequestedQuantity();
        }

        unchecked {
            orderStatus.amount -= uint200(quantityFilled);
            emit OrderFilled(orderId, owner, msg.sender, quantityFilled);
        }

        if (orderStatus.amount == 0) {
            orderStatus.state = ORDER_STATE_FILLED;
            emit OrderClosed(orderId, owner, msg.sender, false);
        }

        isError = _transferFrom(token, owner, to, id, quantityFilled);
    }

    /**
     * @notice  Restores an account's nonce when a transfer was not successful
     * 
     * @dev     Throws when the nonce was not already consumed
     * 
     * @param account  The account to restore the nonce of
     * @param nonce    The nonce to restore
     */
    function _restoreNonce(address account, uint256 nonce) private {
        unchecked {
            if (uint256(_unorderedNonces[account][uint248(nonce >> 8)] ^= (ONE << uint8(nonce))) & 
                (ONE << uint8(nonce)) != ZERO) {
                revert PermitC__NonceNotUsedOrRevoked();
            }
        }
    }

    /**
     * @notice  Restores an approval amount when a transfer was not successful
     * 
     * @param approval        Storage pointer for the approval data
     * @param owner           The owner of the tokens
     * @param orderId         The order id to restore approval amount on
     * @param unfilledAmount  The amount that was not filled on the order
     * @param isOrderPermit   True if the fill restoration is for an permit order
     */
    function _restoreFillableItems(
        PackedApproval storage approval,
        address owner,
        bytes32 orderId,
        uint256 unfilledAmount,
        bool isOrderPermit
    ) private {
        if (unfilledAmount > 0) {
            if (isOrderPermit) {
                // Order permits always deduct amount and must be restored
                unchecked {
                    approval.amount += uint200(unfilledAmount);
                }

                approval.state = ORDER_STATE_OPEN;
                emit OrderRestored(orderId, owner, unfilledAmount);
            } else if (approval.amount < type(uint200).max) {
                // Stored approvals only deduct amount 
                unchecked {
                    approval.amount += uint200(unfilledAmount);
                }
            }
        }
    }

    function _requireValidTokenType(uint256 tokenType) private pure {
        if(!(
            tokenType == TOKEN_TYPE_ERC721 || 
            tokenType == TOKEN_TYPE_ERC1155 || 
            tokenType == TOKEN_TYPE_ERC20
            )
        ) {
            revert PermitC__InvalidTokenType();
        }
    }

    /**
     * @notice  Generates an EIP-712 digest for a permit
     * 
     * @param tokenType           The type of token
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param amount              The amount authorized by the owner signature
     * @param owner               The owner of the token
     * @param nonce               The nonce for the permit
     * @param expiration          The time the permit expires
     * @param additionalData      The additional data to validate with the permit signature
     * @param advancedPermitHash  The typehash of the permit to use for validating the signature
     * 
     * @return digest  The EIP-712 digest of the permit data
     */
    function _getAdvancedTypedDataV4PermitHash(
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 amount,
        address owner,
        uint256 nonce,
        uint256 expiration,
        bytes32 additionalData,
        bytes32 advancedPermitHash
    ) private view returns (bytes32 digest) {
        // cache masterNonce on stack to avoid stack too deep
        uint256 masterNonce_ = _masterNonces[owner];
        digest = 
            _hashTypedDataV4(
                PermitHash.hashSingleUsePermitWithAdditionalData(
                    tokenType,
                    token, 
                    id, 
                    amount, 
                    nonce, 
                    expiration, 
                    additionalData, 
                    advancedPermitHash, 
                    masterNonce_
                )
            );
    }

    /**
     * @notice  Returns the current allowed amount and expiration for a stored permit
     * 
     * @dev     Returns zero allowed if the permit has expired
     * 
     * @param _approvals  The mapping to retrieve the approval from
     * @param owner       The account the approval is from
     * @param operator    The operator for the approval
     * @param tokenType   The type of token the approval is for
     * @param token       The address of the token
     * @param id          The id of the token
     * @param orderId     The order id for the approval
     * 
     * @return allowedAmount  The amount authorized by the approval, zero if the permit has expired
     * @return expiration     The expiration of the approval
     */
    function _allowance(
        mapping(bytes32 => mapping(address => PackedApproval)) storage _approvals,
        address owner, 
        address operator, 
        uint256 tokenType, 
        address token, 
        uint256 id, 
        bytes32 orderId
    ) private view returns (uint256 allowedAmount, uint256 expiration) {
        PackedApproval storage allowed = _getPackedApprovalPtr(_approvals, owner, tokenType, token, id, orderId, operator);
        allowedAmount = allowed.expiration < block.timestamp ? 0 : allowed.amount;
        expiration = allowed.expiration;
    }

    /**
     * @notice  Allows the owner of the PermitC contract to access pausable admin functions
     * 
     * @dev     May be overriden by an inheriting contract to provide alternative permission structure
     */
    function _requireCallerHasPausePermissions() internal view virtual override {
        _checkOwner();
    }
}

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

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        bytes32[] memory store = _values(set._inner);
        bytes32[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

contract Tstorish {
    // Declare a storage variable indicating if TSTORE support has been
    // activated post-deployment.
    bool private _tstoreSupport;

    /*
     * ------------------------------------------------------------------------+
     * Opcode      | Mnemonic         | Stack              | Memory            |
     * ------------------------------------------------------------------------|
     * 60 0x02     | PUSH1 0x02       | 0x02               |                   |
     * 60 0x1e     | PUSH1 0x1e       | 0x1e 0x02          |                   |
     * 61 0x3d5c   | PUSH2 0x3d5c     | 0x3d5c 0x1e 0x02   |                   |
     * 3d          | RETURNDATASIZE   | 0 0x3d5c 0x1e 0x02 |                   |
     *                                                                         |
     * :: store deployed bytecode in memory: (3d) RETURNDATASIZE (5c) TLOAD :: |
     * 52          | MSTORE           | 0x1e 0x02          | [0..0x20): 0x3d5c |
     * f3          | RETURN           |                    | [0..0x20): 0x3d5c |
     * ------------------------------------------------------------------------+
     */
    uint256 constant _TLOAD_TEST_PAYLOAD = 0x6002_601e_613d5c_3d_52_f3;
    uint256 constant _TLOAD_TEST_PAYLOAD_LENGTH = 0x0a;
    uint256 constant _TLOAD_TEST_PAYLOAD_OFFSET = 0x16;

    // Declare an immutable variable to store the initial TSTORE support status.
    bool private immutable _tstoreInitialSupport;

    // Declare an immutable variable to store the tstore test contract address.
    address private immutable _tloadTestContract;

    // Declare a few custom revert error types.
    error TStoreAlreadyActivated();
    error TStoreNotSupported();
    error TloadTestContractDeploymentFailed();
    error OnlyDirectCalls();

    /**
     * @dev Determine TSTORE availability during deployment. This involves
     *      attempting to deploy a contract that utilizes TLOAD as part of the
     *      contract construction bytecode, and configuring initial support for
     *      using TSTORE in place of SSTORE based on the result.
     */
    constructor() {
        // Deploy the contract testing TLOAD support and store the address.
        address tloadTestContract = _prepareTloadTest();

        // Ensure the deployment was successful.
        if (tloadTestContract == address(0)) {
            revert TloadTestContractDeploymentFailed();
        }

        // Determine if TSTORE is supported.
        bool tstoreInitialSupport = _testTload(tloadTestContract);

        // Store the result as an immutable.
        _tstoreInitialSupport = tstoreInitialSupport;

        // Set the address of the deployed TLOAD test contract as an immutable.
        _tloadTestContract = tloadTestContract;
    }

    /**
     * @dev External function to activate TSTORE usage. Does not need to be
     *      called if TSTORE is supported from deployment, and only needs to be
     *      called once. Reverts if TSTORE has already been activated or if the
     *      opcode is not available. Note that this must be called directly from
     *      an externally-owned account to avoid potential reentrancy issues.
     */
    function __activateTstore() external {
        // Ensure this function is triggered from an externally-owned account.
        if (msg.sender != tx.origin) {
            revert OnlyDirectCalls();
        }

        // Determine if TSTORE can potentially be activated.
        if (_tstoreInitialSupport || _tstoreSupport) {
            revert TStoreAlreadyActivated();
        }

        // Determine if TSTORE can be activated and revert if not.
        if (!_testTload(_tloadTestContract)) {
            revert TStoreNotSupported();
        }

        // Mark TSTORE as activated.
        _tstoreSupport = true;
    }

    /**
     * @dev Internal function to set a TSTORISH value.
     *
     * @param storageSlot The slot to write the TSTORISH value to.
     * @param value       The value to write to the given storage slot.
     */
    function _setTstorish(uint256 storageSlot, uint256 value) internal {
        if (_tstoreInitialSupport) {
            assembly {
                tstore(storageSlot, value)
            }
        } else if (_tstoreSupport) {
            assembly {
                tstore(storageSlot, value)
            }
        } else {
            assembly {
                sstore(storageSlot, value)
            }
        }
    }

    /**
     * @dev Internal function to read a TSTORISH value.
     *
     * @param storageSlot The slot to read the TSTORISH value from.
     *
     * @return value The TSTORISH value at the given storage slot.
     */
    function _getTstorish(
        uint256 storageSlot
    ) internal view returns (uint256 value) {
        if (_tstoreInitialSupport) {
            assembly {
                value := tload(storageSlot)
            }
        } else if (_tstoreSupport) {
            assembly {
                value := tload(storageSlot)
            }
        } else {
            assembly {
                value := sload(storageSlot)
            }
        }
    }

    /**
     * @dev Internal function to clear a TSTORISH value.
     *
     * @param storageSlot The slot to clear the TSTORISH value for.
     */
    function _clearTstorish(uint256 storageSlot) internal {
        if (_tstoreInitialSupport) {
            assembly {
                tstore(storageSlot, 0)
            }
        } else if (_tstoreSupport) {
            assembly {
                tstore(storageSlot, 0)
            }
        } else {
            assembly {
                sstore(storageSlot, 0)
            }
        }
    }

    /**
     * @dev Private function to deploy a test contract that utilizes TLOAD as
     *      part of its fallback logic.
     */
    function _prepareTloadTest() private returns (address contractAddress) {
        // Utilize assembly to deploy a contract testing TLOAD support.
        assembly {
            // Write the contract deployment code payload to scratch space.
            mstore(0, _TLOAD_TEST_PAYLOAD)

            // Deploy the contract.
            contractAddress := create(
                0,
                _TLOAD_TEST_PAYLOAD_OFFSET,
                _TLOAD_TEST_PAYLOAD_LENGTH
            )
        }
    }

    /**
     * @dev Private view function to determine if TSTORE/TLOAD are supported by
     *      the current EVM implementation by attempting to call the test
     *      contract, which utilizes TLOAD as part of its fallback logic.
     */
    function _testTload(
        address tloadTestContract
    ) private view returns (bool ok) {
        // Call the test contract, which will perform a TLOAD test. If the call
        // does not revert, then TLOAD/TSTORE is supported. Do not forward all
        // available gas, as all forwarded gas will be consumed on revert.
        (ok, ) = tloadTestContract.staticcall{ gas: gasleft() / 10 }("");
    }
}

// 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 (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @dev Thrown when a stored approval exceeds type(uint200).max
error PermitC__AmountExceedsStorageMaximum();

/// @dev Thrown when a transfer amount requested exceeds the permitted amount
error PermitC__ApprovalTransferExceededPermittedAmount();

/// @dev Thrown when a transfer is requested after the permit has expired
error PermitC__ApprovalTransferPermitExpiredOrUnset();

/// @dev Thrown when attempting to close an order by an account that is not the owner or operator
error PermitC__CallerMustBeOwnerOrOperator();

/// @dev Thrown when attempting to approve a token type that is not valid for PermitC
error PermitC__InvalidTokenType();

/// @dev Thrown when attempting to invalidate a nonce that has already been used
error PermitC__NonceAlreadyUsedOrRevoked();

/// @dev Thrown when attempting to restore a nonce that has not been used
error PermitC__NonceNotUsedOrRevoked();

/// @dev Thrown when attempting to fill an order that has already been filled or cancelled
error PermitC__OrderIsEitherCancelledOrFilled();

/// @dev Thrown when a transfer amount requested exceeds the permitted amount
error PermitC__SignatureTransferExceededPermittedAmount();

/// @dev Thrown when a transfer is requested after the permit has expired
error PermitC__SignatureTransferExceededPermitExpired();

/// @dev Thrown when attempting to use an advanced permit typehash that is not registered
error PermitC__SignatureTransferPermitHashNotRegistered();

/// @dev Thrown when a permit signature is invalid
error PermitC__SignatureTransferInvalidSignature();

/// @dev Thrown when the remaining fill amount is less than the requested minimum fill
error PermitC__UnableToFillMinimumRequestedQuantity();

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC721.sol)

pragma solidity ^0.8.0;

import "../token/ERC721/IERC721.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1155.sol)

pragma solidity ^0.8.0;

import "../token/ERC1155/IERC1155.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC1271 standard signature validation method for
 * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
 *
 * _Available since v4.1._
 */
interface IERC1271 {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param hash      Hash of the data to be signed
     * @param signature Signature byte array associated with _data
     */
    function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import {Context} from "@openzeppelin/contracts/utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    error Ownable__CallerIsNotOwner();
    error Ownable__NewOwnerIsZeroAddress();

    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if(owner() != _msgSender()) revert Ownable__CallerIsNotOwner();
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if(newOwner == address(0)) revert Ownable__NewOwnerIsZeroAddress();
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/cryptography/EIP712.sol)

pragma solidity ^0.8.8;

import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
 * separator of the implementation contract. This will cause the `_domainSeparatorV4` function to always rebuild the
 * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
 *
 * _Available since v3.4._
 *
 * @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
 */
abstract contract EIP712 {
    bytes32 private constant _TYPE_HASH =
        keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");

    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _cachedDomainSeparator;
    uint256 private immutable _cachedChainId;

    bytes32 private immutable _hashedName;
    bytes32 private immutable _hashedVersion;

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        _hashedName = keccak256(bytes(name));
        _hashedVersion = keccak256(bytes(version));

        _cachedChainId = block.chainid;
        _cachedDomainSeparator = _buildDomainSeparator();
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (block.chainid == _cachedChainId) {
            return _cachedDomainSeparator;
        } else {
            return _buildDomainSeparator();
        }
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(_TYPE_HASH, _hashedName, _hashedVersion, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @dev Constant bytes32 value of 0x000...000
bytes32 constant ZERO_BYTES32 = bytes32(0);

/// @dev Constant value of 0
uint256 constant ZERO = 0;
/// @dev Constant value of 1
uint256 constant ONE = 1;

/// @dev Constant value representing an open order in storage
uint8 constant ORDER_STATE_OPEN = 0;
/// @dev Constant value representing a filled order in storage
uint8 constant ORDER_STATE_FILLED = 1;
/// @dev Constant value representing a cancelled order in storage
uint8 constant ORDER_STATE_CANCELLED = 2;

/// @dev Constant value representing the ERC721 token type for signatures and transfer hooks
uint256 constant TOKEN_TYPE_ERC721 = 721;
/// @dev Constant value representing the ERC1155 token type for signatures and transfer hooks
uint256 constant TOKEN_TYPE_ERC1155 = 1155;
/// @dev Constant value representing the ERC20 token type for signatures and transfer hooks
uint256 constant TOKEN_TYPE_ERC20 = 20;

/// @dev Constant value to mask the upper bits of a signature that uses a packed `vs` value to extract `s`
bytes32 constant UPPER_BIT_MASK = 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;

/// @dev EIP-712 typehash used for validating signature based stored approvals
bytes32 constant UPDATE_APPROVAL_TYPEHASH =
    keccak256("UpdateApprovalBySignature(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 approvalExpiration,uint256 sigDeadline,uint256 masterNonce)");

/// @dev EIP-712 typehash used for validating a single use permit without additional data
bytes32 constant SINGLE_USE_PERMIT_TYPEHASH =
    keccak256("PermitTransferFrom(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 expiration,uint256 masterNonce)");

/// @dev EIP-712 typehash used for validating a single use permit with additional data
string constant SINGLE_USE_PERMIT_TRANSFER_ADVANCED_TYPEHASH_STUB =
    "PermitTransferFromWithAdditionalData(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 nonce,address operator,uint256 expiration,uint256 masterNonce,";

/// @dev EIP-712 typehash used for validating an order permit that updates storage as it fills
string constant PERMIT_ORDER_ADVANCED_TYPEHASH_STUB =
    "PermitOrderWithAdditionalData(uint256 tokenType,address token,uint256 id,uint256 amount,uint256 salt,address operator,uint256 expiration,uint256 masterNonce,";

/// @dev Pausable flag for stored approval transfers of ERC721 assets
uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC721 = 1 << 0;
/// @dev Pausable flag for stored approval transfers of ERC1155 assets
uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC1155 = 1 << 1;
/// @dev Pausable flag for stored approval transfers of ERC20 assets
uint256 constant PAUSABLE_APPROVAL_TRANSFER_FROM_ERC20 = 1 << 2;

/// @dev Pausable flag for single use permit transfers of ERC721 assets
uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC721 = 1 << 3;
/// @dev Pausable flag for single use permit transfers of ERC1155 assets
uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC1155 = 1 << 4;
/// @dev Pausable flag for single use permit transfers of ERC20 assets
uint256 constant PAUSABLE_PERMITTED_TRANSFER_FROM_ERC20 = 1 << 5;

/// @dev Pausable flag for order fill transfers of ERC1155 assets
uint256 constant PAUSABLE_ORDER_TRANSFER_FROM_ERC1155 = 1 << 6;
/// @dev Pausable flag for order fill transfers of ERC20 assets
uint256 constant PAUSABLE_ORDER_TRANSFER_FROM_ERC20 = 1 << 7;

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/// @dev Storage data struct for stored approvals and order approvals
struct PackedApproval {
    // Only used for partial fill position 1155 transfers
    uint8 state;
    // Amount allowed
    uint200 amount;
    // Permission expiry
    uint48 expiration;
}

/// @dev Calldata data struct for order fill amounts
struct OrderFillAmounts {
    uint256 orderStartAmount;
    uint256 requestedFillAmount;
    uint256 minimumFillAmount;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import {SINGLE_USE_PERMIT_TYPEHASH, UPDATE_APPROVAL_TYPEHASH} from "../Constants.sol";

library PermitHash {

    /**
     * @notice  Hashes the permit data for a stored approval
     * 
     * @param tokenType           The type of token
     * @param token               The address of the token
     * @param id                  The id of the token
     * @param amount              The amount authorized by the owner signature
     * @param nonce               The nonce for the permit
     * @param operator            The account that is allowed to use the permit
     * @param approvalExpiration  The time the permit approval expires
     * @param sigDeadline         The deadline for submitting the permit onchain
     * @param masterNonce         The signers master nonce
     * 
     * @return hash  The hash of the permit data
     */
    function hashOnChainApproval(
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 amount,
        uint256 nonce,
        address operator, 
        uint256 approvalExpiration,
        uint256 sigDeadline,
        uint256 masterNonce
    ) internal pure returns (bytes32 hash) {
        hash = keccak256(
            abi.encode(
                UPDATE_APPROVAL_TYPEHASH,
                tokenType,
                token,
                id,
                amount,
                nonce,
                operator,
                approvalExpiration,
                sigDeadline,
                masterNonce
            )
        );
    }

    /**
     * @notice  Hashes the permit data with the single user permit without additional data typehash
     * 
     * @param tokenType               The type of token
     * @param token                   The address of the token
     * @param id                      The id of the token
     * @param amount                  The amount authorized by the owner signature
     * @param nonce                   The nonce for the permit
     * @param expiration              The time the permit expires
     * @param masterNonce             The signers master nonce
     * 
     * @return hash  The hash of the permit data
     */
    function hashSingleUsePermit(
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 amount,
        uint256 nonce,
        uint256 expiration,
        uint256 masterNonce
    ) internal view returns (bytes32 hash) {
        hash = keccak256(
            abi.encode(
                SINGLE_USE_PERMIT_TYPEHASH,
                tokenType,
                token,
                id,
                amount,
                nonce,
                msg.sender,
                expiration,
                masterNonce
            )
        );
    }

    /**
     * @notice  Hashes the permit data with the supplied typehash
     * 
     * @param tokenType               The type of token
     * @param token                   The address of the token
     * @param id                      The id of the token
     * @param amount                  The amount authorized by the owner signature
     * @param nonce                   The nonce for the permit
     * @param expiration              The time the permit expires
     * @param additionalData          The additional data to validate with the permit signature
     * @param additionalDataTypeHash  The typehash of the permit to use for validating the signature
     * @param masterNonce             The signers master nonce
     * 
     * @return hash  The hash of the permit data with the supplied typehash
     */
    function hashSingleUsePermitWithAdditionalData(
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 amount,
        uint256 nonce,
        uint256 expiration,
        bytes32 additionalData,
        bytes32 additionalDataTypeHash,
        uint256 masterNonce
    ) internal view returns (bytes32 hash) {
        hash = keccak256(
            abi.encode(
                additionalDataTypeHash,
                tokenType,
                token,
                id,
                amount,
                nonce,
                msg.sender,
                expiration,
                masterNonce,
                additionalData
            )
        );
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import {OrderFillAmounts} from "../DataTypes.sol";

interface IPermitC {

    /**
     * =================================================
     * ==================== Events =====================
     * =================================================
     */

    /// @dev Emitted when an approval is stored
    event Approval(
        address indexed owner,
        address indexed token,
        address indexed operator,
        uint256 id,
        uint200 amount,
        uint48 expiration
    );

    /// @dev Emitted when a user increases their master nonce
    event Lockdown(address indexed owner);

    /// @dev Emitted when an order is opened
    event OrderOpened(
        bytes32 indexed orderId,
        address indexed owner,
        address indexed operator,
        uint256 fillableQuantity
    );

    /// @dev Emitted when an order has a fill
    event OrderFilled(
        bytes32 indexed orderId,
        address indexed owner,
        address indexed operator,
        uint256 amount
    );

    /// @dev Emitted when an order has been fully filled or cancelled
    event OrderClosed(
        bytes32 indexed orderId, 
        address indexed owner, 
        address indexed operator, 
        bool wasCancellation);

    /// @dev Emitted when an order has an amount restored due to a failed transfer
    event OrderRestored(
        bytes32 indexed orderId,
        address indexed owner,
        uint256 amountRestoredToOrder
    );

    /**
     * =================================================
     * ============== Approval Transfers ===============
     * =================================================
     */
    function approve(uint256 tokenType, address token, uint256 id, address operator, uint200 amount, uint48 expiration) external;

    function updateApprovalBySignature(
        uint256 tokenType,
        address token,
        uint256 id,
        uint256 nonce,
        uint200 amount,
        address operator,
        uint48 approvalExpiration,
        uint48 sigDeadline,
        address owner,
        bytes calldata signedPermit
    ) external;

    function allowance(
        address owner, 
        address operator, 
        uint256 tokenType,
        address token, 
        uint256 id
    ) external view returns (uint256 amount, uint256 expiration);

    /**
     * =================================================
     * ================ Signed Transfers ===============
     * =================================================
     */
    function registerAdditionalDataHash(string memory additionalDataTypeString) external;

    function permitTransferFromERC721(
        address token,
        uint256 id,
        uint256 nonce,
        uint256 expiration,
        address owner,
        address to,
        bytes calldata signedPermit
    ) external returns (bool isError);

    function permitTransferFromWithAdditionalDataERC721(
        address token,
        uint256 id,
        uint256 nonce,
        uint256 expiration,
        address owner,
        address to,
        bytes32 additionalData,
        bytes32 advancedPermitHash,
        bytes calldata signedPermit
    ) external returns (bool isError);

    function permitTransferFromERC1155(
        address token,
        uint256 id,
        uint256 nonce,
        uint256 permitAmount,
        uint256 expiration,
        address owner,
        address to,
        uint256 transferAmount,
        bytes calldata signedPermit
    ) external returns (bool isError);

    function permitTransferFromWithAdditionalDataERC1155(
        address token,
        uint256 id,
        uint256 nonce,
        uint256 permitAmount,
        uint256 expiration,
        address owner,
        address to,
        uint256 transferAmount,
        bytes32 additionalData,
        bytes32 advancedPermitHash,
        bytes calldata signedPermit
    ) external returns (bool isError);

    function permitTransferFromERC20(
        address token,
        uint256 nonce,
        uint256 permitAmount,
        uint256 expiration,
        address owner,
        address to,
        uint256 transferAmount,
        bytes calldata signedPermit
    ) external returns (bool isError);

    function permitTransferFromWithAdditionalDataERC20(
        address token,
        uint256 nonce,
        uint256 permitAmount,
        uint256 expiration,
        address owner,
        address to,
        uint256 transferAmount,
        bytes32 additionalData,
        bytes32 advancedPermitHash,
        bytes calldata signedPermit
    ) external returns (bool isError);

    function isRegisteredTransferAdditionalDataHash(bytes32 hash) external view returns (bool isRegistered);

    function isRegisteredOrderAdditionalDataHash(bytes32 hash) external view returns (bool isRegistered);

    /**
     * =================================================
     * =============== Order Transfers =================
     * =================================================
     */
    function fillPermittedOrderERC1155(
        bytes calldata signedPermit,
        OrderFillAmounts calldata orderFillAmounts,
        address token,
        uint256 id,
        address owner,
        address to,
        uint256 nonce,
        uint48 expiration,
        bytes32 orderId,
        bytes32 advancedPermitHash
    ) external returns (uint256 quantityFilled, bool isError);

    function fillPermittedOrderERC20(
        bytes calldata signedPermit,
        OrderFillAmounts calldata orderFillAmounts,
        address token,
        address owner,
        address to,
        uint256 nonce,
        uint48 expiration,
        bytes32 orderId,
        bytes32 advancedPermitHash
    ) external returns (uint256 quantityFilled, bool isError);

    function closePermittedOrder(
        address owner,
        address operator,
        uint256 tokenType,
        address token,
        uint256 id,
        bytes32 orderId
    ) external;

    function allowance(
        address owner, 
        address operator, 
        uint256 tokenType,
        address token, 
        uint256 id,
        bytes32 orderId
    ) external view returns (uint256 amount, uint256 expiration);


    /**
     * =================================================
     * ================ Nonce Management ===============
     * =================================================
     */
    function invalidateUnorderedNonce(uint256 nonce) external;

    function isValidUnorderedNonce(address owner, uint256 nonce) external view returns (bool isValid);

    function lockdown() external;

    function masterNonce(address owner) external view returns (uint256);

    /**
     * =================================================
     * ============== Transfer Functions ===============
     * =================================================
     */
    function transferFromERC721(
        address from,
        address to,
        address token,
        uint256 id
    ) external returns (bool isError);

    function transferFromERC1155(
        address from,
        address to,
        address token,
        uint256 id,
        uint256 amount
    ) external returns (bool isError);

    function transferFromERC20(
        address from,
        address to,
        address token,
        uint256 amount
    ) external returns (bool isError);

    /**
     * =================================================
     * ============ Signature Verification =============
     * =================================================
     */
    function domainSeparatorV4() external view returns (bytes32);
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/*
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* @title CollateralizedPausableFlags
* @custom:version 1.0.0
* @author Limit Break, Inc.
* @description Collateralized Pausable Flags is an extension for contracts
*              that require features to be pausable in the event of potential
*              or actual threats without incurring a storage read overhead cost
*              during normal operations by using contract starting balance as
*              a signal for checking the paused state.
*
*              Using contract balance to enable checking paused state creates an
*              economic penalty for developers that deploy code that can be 
*              exploited as well as an economic incentive (recovery of collateral)
*              for them to mitigate the threat.
*
*              Developers implementing Collateralized Pausable Flags should consider
*              their risk mitigation strategy and ensure funds are readily available
*              for pausing if ever necessary by setting an appropriate threshold 
*              value and considering use of an escrow contract that can initiate the
*              pause with funds.
*
*              There is no restriction on the depositor as this can be easily 
*              circumvented through a `SELFDESTRUCT` opcode.
*
*              Developers must be aware of potential outflows from the contract that
*              could reduce collateral below the pausable check threshold and protect
*              against those methods when pausing is required.
*/
abstract contract CollateralizedPausableFlags {

    /// @dev Emitted when the pausable flags are updated
    event PausableFlagsUpdated(uint256 previousFlags, uint256 newFlags);

    /// @dev Thrown when an execution path requires a flag to not be paused but it is paused
    error CollateralizedPausableFlags__Paused();
    /// @dev Thrown when an executin path requires a flag to be paused but it is not paused
    error CollateralizedPausableFlags__NotPaused();
    /// @dev Thrown when a call to withdraw funds fails
    error CollateralizedPausableFlags__WithdrawFailed();

    /// @dev Immutable variable that defines the native funds threshold before flags are checked
    uint256 private immutable nativeValueToCheckPauseState;
    /// @dev Flags for current pausable state, each bit is considered a separate flag
    uint256 private pausableFlags;

    /// @dev Immutable pointer for the _requireNotPaused function to use based on value threshold
    function(uint256) internal view immutable _requireNotPaused;
    /// @dev Immutable pointer for the _requirePaused function to use based on value threshold
    function(uint256) internal view immutable _requirePaused;
    /// @dev Immutable pointer for the _getPausableFlags function to use based on value threshold
    function() internal view returns (uint256) immutable _getPausableFlags;

    constructor(uint256 _nativeValueToCheckPauseState) {
        // Optimizes value check at runtime by reducing the stored immutable 
        // value by 1 so that greater than can be used instead of greater 
        // than or equal while allowing the deployment parameter to reflect 
        // the value at which the deployer wants to trigger pause checking.
        // Example: 
        //     Constructed with a value of 1000
        //     Immutable value stored is 999
        //     State checking enabled at 1000 units deposited because
        //     1000 > 999 evaluates true
        if (_nativeValueToCheckPauseState > 0) {
            unchecked {
                _nativeValueToCheckPauseState -= 1;
            }
            _requireNotPaused = _requireNotPausedWithCollateralCheck;
            _requirePaused = _requirePausedWithCollateralCheck;
            _getPausableFlags = _getPausableFlagsWithCollateralCheck;
        } else {
            _requireNotPaused = _requireNotPausedWithoutCollateralCheck;
            _requirePaused = _requirePausedWithoutCollateralCheck;
            _getPausableFlags = _getPausableFlagsWithoutCollateralCheck;
        }

        nativeValueToCheckPauseState = _nativeValueToCheckPauseState;
    }

    /**
     * @dev  Modifier to make a function callable only when the specified flags are not paused
     * @dev  Throws when any of the flags specified are paused
     * 
     * @param _flags  The flags to check for pause state
     */
    modifier whenNotPaused(uint256 _flags) {
        _requireNotPaused(_flags);
        _;
    }

    /**
     * @dev  Modifier to make a function callable only when the specified flags are paused
     * @dev  Throws when any of the flags specified are not paused
     * 
     * @param _flags  The flags to check for pause state
     */
    modifier whenPaused(uint256 _flags) {
        _requirePaused(_flags);
        _;
    }

    /**
     * @dev  Modifier to make a function callable only by a permissioned account
     * @dev  Throws when the caller does not have permission
     */
    modifier onlyPausePermissionedCaller() {
        _requireCallerHasPausePermissions();
        _;
    }

    /**
     * @notice  Updates the pausable flags settings
     * 
     * @dev     Throws when the caller does not have permission
     * @dev     **NOTE:** Pausable flag settings will only take effect if contract balance exceeds 
     * @dev     `nativeValueToPause`
     * 
     * @dev     <h4>Postconditions:</h4>
     * @dev     1. address(this).balance increases by msg.value
     * @dev     2. `pausableFlags` is set to the new value
     * @dev     3. Emits a PausableFlagsUpdated event
     * 
     * @param _pausableFlags  The new pausable flags to set
     */
    function pause(uint256 _pausableFlags) external payable onlyPausePermissionedCaller {
        _setPausableFlags(_pausableFlags);
    }

    /**
     * @notice  Allows any account to supply funds for enabling the pausable checks
     * 
     * @dev     **NOTE:** The threshold check for pausable collateral does not pause
     * @dev     any functions unless the associated pausable flag is set.
     */
    function pausableDepositCollateral() external payable {
        // thank you for your contribution to safety
    }

    /**
     * @notice  Resets all pausable flags to unpaused and withdraws funds
     * 
     * @dev     Throws when the caller does not have permission
     * 
     * @dev     <h4>Postconditions:</h4>
     * @dev     1. `pausableFlags` is set to zero
     * @dev     2. Emits a PausableFlagsUpdated event
     * @dev     3. Transfers `withdrawAmount` of native funds to `withdrawTo` if non-zero
     * 
     * @param withdrawTo      The address to withdraw the collateral to
     * @param withdrawAmount  The amount of collateral to withdraw
     */
    function unpause(address withdrawTo, uint256 withdrawAmount) external onlyPausePermissionedCaller {
        _setPausableFlags(0);

        if (withdrawAmount > 0) {
            (bool success, ) = withdrawTo.call{value: withdrawAmount}("");
            if(!success) revert CollateralizedPausableFlags__WithdrawFailed();
        }
    }

    /**
     * @notice  Returns collateralized pausable configuration information
     * 
     * @return _nativeValueToCheckPauseState  The collateral required to enable pause state checking
     * @return _pausableFlags                 The current pausable flags set, only checked when collateral met
     */
    function pausableConfigurationSettings() external view returns(
        uint256 _nativeValueToCheckPauseState, 
        uint256 _pausableFlags
    ) {
        unchecked {
            _nativeValueToCheckPauseState = nativeValueToCheckPauseState + 1;
            _pausableFlags = pausableFlags;
        }
    }

    /**
     * @notice  Updates the `pausableFlags` variable and emits a PausableFlagsUpdated event
     * 
     * @param _pausableFlags  The new pausable flags to set
     */
    function _setPausableFlags(uint256 _pausableFlags) internal {
        uint256 previousFlags = pausableFlags;

        pausableFlags = _pausableFlags;

        emit PausableFlagsUpdated(previousFlags, _pausableFlags);
    }

    /**
     * @notice  Checks the current pause state of the supplied flags and reverts if any are paused
     * 
     * @dev     *Should* be called prior to any transfers of native funds out of the contract for efficiency
     * @dev     Throws when the native funds balance is greater than the value to enable pausing AND
     * @dev     one or more of the supplied `_flags` is paused.
     * 
     * @param _flags  The flags to check for pause state
     */
    function _requireNotPausedWithCollateralCheck(uint256 _flags) private view {
        if (_nativeBalanceSubMsgValue() > nativeValueToCheckPauseState) {
            if (pausableFlags & _flags > 0) {
                revert CollateralizedPausableFlags__Paused();
            }
        }
    }

    /**
     * @notice  Checks the current pause state of the supplied flags and reverts if any are paused
     * 
     * @dev     Throws when one or more of the supplied `_flags` is paused.
     * 
     * @param _flags  The flags to check for pause state
     */
    function _requireNotPausedWithoutCollateralCheck(uint256 _flags) private view {
        if (pausableFlags & _flags > 0) {
            revert CollateralizedPausableFlags__Paused();
        }
    }

    /**
     * @notice  Checks the current pause state of the supplied flags and reverts if none are paused
     * 
     * @dev     *Should* be called prior to any transfers of native funds out of the contract for efficiency
     * @dev     Throws when the native funds balance is not greater than the value to enable pausing OR
     * @dev     none of the supplied `_flags` are paused.
     * 
     * @param _flags  The flags to check for pause state
     */
    function _requirePausedWithCollateralCheck(uint256 _flags) private view {
        if (_nativeBalanceSubMsgValue() <= nativeValueToCheckPauseState) {
            revert CollateralizedPausableFlags__NotPaused();
        } else if (pausableFlags & _flags == 0) {
            revert CollateralizedPausableFlags__NotPaused();
        }
    }

    /**
     * @notice  Checks the current pause state of the supplied flags and reverts if none are paused
     * 
     * @dev     Throws when none of the supplied `_flags` are paused.
     * 
     * @param _flags  The flags to check for pause state
     */
    function _requirePausedWithoutCollateralCheck(uint256 _flags) private view {
        if (pausableFlags & _flags == 0) {
            revert CollateralizedPausableFlags__NotPaused();
        }
    }

    /**
     * @notice  Returns the current state of the pausable flags
     * 
     * @dev     Will return zero if the native funds balance is not greater than the value to enable pausing
     * 
     * @return _pausableFlags  The current state of the pausable flags
     */
    function _getPausableFlagsWithCollateralCheck() private view returns(uint256 _pausableFlags) {
        if (_nativeBalanceSubMsgValue() > nativeValueToCheckPauseState) {
            _pausableFlags = pausableFlags;
        }
    }

    /**
     * @notice  Returns the current state of the pausable flags
     * 
     * @return _pausableFlags  The current state of the pausable flags
     */
    function _getPausableFlagsWithoutCollateralCheck() private view returns(uint256 _pausableFlags) {
        _pausableFlags = pausableFlags;
    }

    /**
     * @notice  Returns the current contract balance minus the value sent with the call
     * 
     * @dev     This is expected to be the contract balance at the beginning of a function call
     * @dev     to efficiently determine whether a contract has the necessary collateral to enable
     * @dev     the pausable flags checking for contracts that hold native token funds.
     * @dev     This should **NOT** be used in any way to determine current balance for contract logic
     * @dev     other than its intended purpose for pause state checking activation.
     */
    function _nativeBalanceSubMsgValue() private view returns (uint256 _value) {
        unchecked {
            _value = address(this).balance - msg.value;
        }
    }

    /**
     * @dev  To be implemented by an inheriting contract for authorization to `pause` and `unpause` 
     * @dev  functions as well as any functions in the inheriting contract that utilize the
     * @dev  `onlyPausePermissionedCaller` modifier.
     * 
     * @dev  Implementing contract function **MUST** throw when the caller is not permissioned
     */
    function _requireCallerHasPausePermissions() internal view virtual;
}

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

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (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
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
        external
        view
        returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV // Deprecated in v4.8
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

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

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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. If 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)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 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) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10**64) {
                value /= 10**64;
                result += 64;
            }
            if (value >= 10**32) {
                value /= 10**32;
                result += 32;
            }
            if (value >= 10**16) {
                value /= 10**16;
                result += 16;
            }
            if (value >= 10**8) {
                value /= 10**8;
                result += 8;
            }
            if (value >= 10**4) {
                value /= 10**4;
                result += 4;
            }
            if (value >= 10**2) {
                value /= 10**2;
                result += 2;
            }
            if (value >= 10**1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
        }
    }
}

{
  "remappings": [
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "murky/=lib/murky/src/",
    "erc721a/=lib/ERC721A/",
    "@limitbreak/permit-c/=lib/PermitC/src/",
    "@opensea/tstorish/=lib/tstorish/src/",
    "@rari-capital/solmate/=lib/PermitC/lib/solmate/",
    "ERC721A/=lib/ERC721A/contracts/",
    "PermitC/=lib/PermitC/",
    "erc4626-tests/=lib/PermitC/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-gas-metering/=lib/PermitC/lib/forge-gas-metering/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/PermitC/lib/openzeppelin-contracts/contracts/",
    "solady/=lib/PermitC/lib/forge-gas-metering/lib/solady/",
    "solmate/=lib/PermitC/lib/solmate/src/",
    "tstorish/=lib/tstorish/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 777
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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tateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"}],"name":"createList","outputs":[{"internalType":"uint120","name":"id","type":"uint120"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"uint120","name":"sourceListId","type":"uint120"}],"name":"createListCopy","outputs":[{"internalType":"uint120","name":"id","type":"uint120"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"domainSeparatorV4","outputs":[{"internalType":"bytes32","name":"domainSeparator","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"signedPermit","type":"bytes"},{"components":[{"internalType":"uint256","name":"orderStartAmount","type":"uint256"},{"internalType":"uint256","name":"requestedFillAmount","type":"uint256"},{"internalType":"uint256","name":"minimumFillAmount","type":"uint256"}],"internalType":"struct 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

-----Decoded View---------------
Arg [0] : defaultOwner (address): 0xc327B16C33fdd558C1ad7DaaFf1a4081E91049f3
Arg [1] : eoaRegistry_ (address): 0xE0A0004CB92d89CD9b056927DF0FE008c16CF86F
Arg [2] : name (string): CreatorTokenTransferValidator
Arg [3] : version (string): 3
Arg [4] : validatorConfiguration (address): 0x721C006D06DC5c03B6106fa9fe32C10EFB1ddB62

-----Encoded View---------------
9 Constructor Arguments found :
Arg [0] : 000000000000000000000000c327b16c33fdd558c1ad7daaff1a4081e91049f3
Arg [1] : 000000000000000000000000e0a0004cb92d89cd9b056927df0fe008c16cf86f
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [3] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [4] : 000000000000000000000000721c006d06dc5c03b6106fa9fe32c10efb1ddb62
Arg [5] : 000000000000000000000000000000000000000000000000000000000000001d
Arg [6] : 43726561746f72546f6b656e5472616e7366657256616c696461746f72000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [8] : 3300000000000000000000000000000000000000000000000000000000000000