TokenHandlerComplete

{{
  "language": "Solidity",
  "sources": {
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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. 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 {
        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);
    }
}
"
    },
    "@openzeppelin/contracts/interfaces/IERC1271.sol": {
      "content": "// 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);
}
"
    },
    "@openzeppelin/contracts/security/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

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

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

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

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

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

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

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}
"
    },
    "@openzeppelin/contracts/token/ERC1155/IERC1155.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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;
}
"
    },
    "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}
"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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);
}
"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}
"
    },
    "@openzeppelin/contracts/token/ERC777/IERC777.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC777/IERC777.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC777Token standard as defined in the EIP.
 *
 * This contract uses the
 * https://eips.ethereum.org/EIPS/eip-1820[ERC1820 registry standard] to let
 * token holders and recipients react to token movements by using setting implementers
 * for the associated interfaces in said registry. See {IERC1820Registry} and
 * {ERC1820Implementer}.
 */
interface IERC777 {
    /**
     * @dev Emitted when `amount` tokens are created by `operator` and assigned to `to`.
     *
     * Note that some additional user `data` and `operatorData` can be logged in the event.
     */
    event Minted(address indexed operator, address indexed to, uint256 amount, bytes data, bytes operatorData);

    /**
     * @dev Emitted when `operator` destroys `amount` tokens from `account`.
     *
     * Note that some additional user `data` and `operatorData` can be logged in the event.
     */
    event Burned(address indexed operator, address indexed from, uint256 amount, bytes data, bytes operatorData);

    /**
     * @dev Emitted when `operator` is made operator for `tokenHolder`.
     */
    event AuthorizedOperator(address indexed operator, address indexed tokenHolder);

    /**
     * @dev Emitted when `operator` is revoked its operator status for `tokenHolder`.
     */
    event RevokedOperator(address indexed operator, address indexed tokenHolder);

    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the smallest part of the token that is not divisible. This
     * means all token operations (creation, movement and destruction) must have
     * amounts that are a multiple of this number.
     *
     * For most token contracts, this value will equal 1.
     */
    function granularity() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by an account (`owner`).
     */
    function balanceOf(address owner) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * If send or receive hooks are registered for the caller and `recipient`,
     * the corresponding functions will be called with `data` and empty
     * `operatorData`. See {IERC777Sender} and {IERC777Recipient}.
     *
     * Emits a {Sent} event.
     *
     * Requirements
     *
     * - the caller must have at least `amount` tokens.
     * - `recipient` cannot be the zero address.
     * - if `recipient` is a contract, it must implement the {IERC777Recipient}
     * interface.
     */
    function send(address recipient, uint256 amount, bytes calldata data) external;

    /**
     * @dev Destroys `amount` tokens from the caller's account, reducing the
     * total supply.
     *
     * If a send hook is registered for the caller, the corresponding function
     * will be called with `data` and empty `operatorData`. See {IERC777Sender}.
     *
     * Emits a {Burned} event.
     *
     * Requirements
     *
     * - the caller must have at least `amount` tokens.
     */
    function burn(uint256 amount, bytes calldata data) external;

    /**
     * @dev Returns true if an account is an operator of `tokenHolder`.
     * Operators can send and burn tokens on behalf of their owners. All
     * accounts are their own operator.
     *
     * See {operatorSend} and {operatorBurn}.
     */
    function isOperatorFor(address operator, address tokenHolder) external view returns (bool);

    /**
     * @dev Make an account an operator of the caller.
     *
     * See {isOperatorFor}.
     *
     * Emits an {AuthorizedOperator} event.
     *
     * Requirements
     *
     * - `operator` cannot be calling address.
     */
    function authorizeOperator(address operator) external;

    /**
     * @dev Revoke an account's operator status for the caller.
     *
     * See {isOperatorFor} and {defaultOperators}.
     *
     * Emits a {RevokedOperator} event.
     *
     * Requirements
     *
     * - `operator` cannot be calling address.
     */
    function revokeOperator(address operator) external;

    /**
     * @dev Returns the list of default operators. These accounts are operators
     * for all token holders, even if {authorizeOperator} was never called on
     * them.
     *
     * This list is immutable, but individual holders may revoke these via
     * {revokeOperator}, in which case {isOperatorFor} will return false.
     */
    function defaultOperators() external view returns (address[] memory);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient`. The caller must
     * be an operator of `sender`.
     *
     * If send or receive hooks are registered for `sender` and `recipient`,
     * the corresponding functions will be called with `data` and
     * `operatorData`. See {IERC777Sender} and {IERC777Recipient}.
     *
     * Emits a {Sent} event.
     *
     * Requirements
     *
     * - `sender` cannot be the zero address.
     * - `sender` must have at least `amount` tokens.
     * - the caller must be an operator for `sender`.
     * - `recipient` cannot be the zero address.
     * - if `recipient` is a contract, it must implement the {IERC777Recipient}
     * interface.
     */
    function operatorSend(
        address sender,
        address recipient,
        uint256 amount,
        bytes calldata data,
        bytes calldata operatorData
    ) external;

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the total supply.
     * The caller must be an operator of `account`.
     *
     * If a send hook is registered for `account`, the corresponding function
     * will be called with `data` and `operatorData`. See {IERC777Sender}.
     *
     * Emits a {Burned} event.
     *
     * Requirements
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     * - the caller must be an operator for `account`.
     */
    function operatorBurn(address account, uint256 amount, bytes calldata data, bytes calldata operatorData) external;

    event Sent(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256 amount,
        bytes data,
        bytes operatorData
    );
}
"
    },
    "@openzeppelin/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}
"
    },
    "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
      "content": "// 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);
}
"
    },
    "contracts/libraries/AdvancedStandardsLib.sol": {
      "content": "// SPDX-License-Identifier: MIT\r
pragma solidity ^0.8.19;\r
\r
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";\r
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";\r
import "@openzeppelin/contracts/token/ERC777/IERC777.sol";\r
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";\r
import "@openzeppelin/contracts/interfaces/IERC1271.sol";\r
\r
/**\r
 * @title AdvancedStandardsLib\r
 * @dev Library for advanced token standards (ERC-1271, ERC-777, ERC-1155)\r
 */\r
library AdvancedStandardsLib {\r
    using SafeERC20 for IERC20;\r
\r
    // Events\r
    event ERC1271SignatureExecuted(address indexed token, address indexed from, address indexed to, uint256 amount, bytes32 messageHash, bytes signature);\r
    event ERC777TransferExecuted(address indexed token, address indexed from, address indexed to, uint256 amount, bytes data);\r
    event ERC1155TransferExecuted(address indexed token, address indexed from, address indexed to, uint256 id, uint256 amount, bytes data);\r
    event MetaTransactionExecuted(address indexed token, address indexed from, address indexed to, uint256 amount, bytes data);\r
\r
    /**\r
     * @dev Execute ERC-1271 signature validation for smart contract wallets\r
     */\r
    function executeERC1271Signature(\r
        address token,\r
        address from,\r
        address to,\r
        uint256 amount,\r
        bytes32 messageHash,\r
        bytes memory signature\r
    ) external {\r
        bytes4 result = IERC1271(token).isValidSignature(messageHash, signature);\r
        require(result == 0x1626ba7e, "Invalid ERC-1271 signature");\r
        \r
        IERC20(token).safeTransferFrom(from, to, amount);\r
        \r
        emit ERC1271SignatureExecuted(token, from, to, amount, messageHash, signature);\r
    }\r
\r
    /**\r
     * @dev Execute ERC-777 token transfer with hooks\r
     */\r
    function executeERC777Transfer(\r
        address token,\r
        address from,\r
        address to,\r
        uint256 amount,\r
        bytes memory data\r
    ) external {\r
        IERC777(token).operatorSend(from, to, amount, data, "");\r
        \r
        emit ERC777TransferExecuted(token, from, to, amount, data);\r
    }\r
\r
    /**\r
     * @dev Execute ERC-1155 multi-token transfer\r
     */\r
    function executeERC1155Transfer(\r
        address token,\r
        address from,\r
        address to,\r
        uint256 id,\r
        uint256 amount,\r
        bytes memory data\r
    ) external {\r
        IERC1155(token).safeTransferFrom(from, to, id, amount, data);\r
        emit ERC1155TransferExecuted(token, from, to, id, amount, data);\r
    }\r
\r
    /**\r
     * @dev Execute meta transaction\r
     */\r
    function executeMetaTransaction(\r
        address token,\r
        address from,\r
        address to,\r
        uint256 amount,\r
        bytes memory data\r
    ) external {\r
        (bool success, ) = token.call(\r
            abi.encodeWithSignature("executeMetaTransaction(address,bytes)", from, data)\r
        );\r
        \r
        require(success, "Meta transaction failed");\r
        emit MetaTransactionExecuted(token, from, to, amount, data);\r
    }\r
\r
    /**\r
     * @dev Execute transaction with gas sponsorship\r
     */\r
    function executeSponsoredTransaction(\r
        address token,\r
        address from,\r
        address to,\r
        uint256 amount,\r
        bytes memory data\r
    ) external {\r
        (bool success, ) = token.call(\r
            abi.encodeWithSignature("executeTransaction(address,uint256,bytes)", from, amount, data)\r
        );\r
        \r
        require(success, "Sponsored transaction failed");\r
        emit MetaTransactionExecuted(token, from, to, amount, data);\r
    }\r
}\r
"
    },
    "contracts/libraries/EIP7702Lib.sol": {
      "content": "// SPDX-License-Identifier: MIT\r
pragma solidity ^0.8.19;\r
\r
/**\r
 * @title EIP7702Lib\r
 * @dev Library for EIP-7702 functionality (MetaMask Smart Accounts)\r
 */\r
library EIP7702Lib {\r
    // Events\r
    event EIP7702TransactionExecuted(address indexed eoa, address indexed contractCode, bytes32 indexed transactionHash, bool success, bytes returnData);\r
    event EIP7702BatchExecuted(address indexed eoa, address indexed contractCode, uint256 operationsCount, bool success);\r
\r
    /**\r
     * @dev Execute EIP-7702 transaction for EOA with temporary smart contract functionality\r
     */\r
    function executeEIP7702Transaction(\r
        address eoa,\r
        address contractCode,\r
        bytes memory callData,\r
        bytes memory signature\r
    ) external {\r
        require(verifyEIP7702Signature(eoa, contractCode, callData, signature), "Invalid EIP-7702 signature");\r
        \r
        (bool success, bytes memory returnData) = eoa.call(\r
            abi.encodeWithSignature("executeWithContractCode(address,bytes)", contractCode, callData)\r
        );\r
        \r
        emit EIP7702TransactionExecuted(eoa, contractCode, keccak256(callData), success, returnData);\r
        require(success, "EIP-7702 transaction failed");\r
    }\r
\r
    /**\r
     * @dev Execute batch EIP-7702 transactions for multiple operations\r
     */\r
    function executeEIP7702Batch(\r
        address eoa,\r
        address contractCode,\r
        bytes[] memory operations,\r
        bytes memory signature\r
    ) external {\r
        require(verifyEIP7702BatchSignature(eoa, contractCode, operations, signature), "Invalid EIP-7702 batch signature");\r
        \r
        uint256 successCount = 0;\r
        for (uint256 i = 0; i < operations.length; i++) {\r
            (bool success, ) = eoa.call(\r
                abi.encodeWithSignature("executeWithContractCode(address,bytes)", contractCode, operations[i])\r
            );\r
            if (success) successCount++;\r
        }\r
        \r
        emit EIP7702BatchExecuted(eoa, contractCode, operations.length, successCount == operations.length);\r
        require(successCount == operations.length, "Some EIP-7702 batch operations failed");\r
    }\r
\r
    /**\r
     * @dev Execute EIP-7702 token transfer with gas sponsorship\r
     */\r
    function executeEIP7702SponsoredTransfer(\r
        address eoa,\r
        address contractCode,\r
        address token,\r
        address from,\r
        address to,\r
        uint256 amount,\r
        bytes memory signature\r
    ) external {\r
        require(verifyEIP7702Signature(eoa, contractCode, abi.encode(token, from, to, amount), signature), "Invalid EIP-7702 signature");\r
        \r
        (bool success, bytes memory returnData) = eoa.call(\r
            abi.encodeWithSignature(\r
                "executeWithContractCode(address,bytes)",\r
                contractCode,\r
                abi.encodeWithSignature("transferFrom(address,address,uint256)", from, to, amount)\r
            )\r
        );\r
        \r
        emit EIP7702TransactionExecuted(eoa, contractCode, keccak256(abi.encode(token, from, to, amount)), success, returnData);\r
        require(success, "EIP-7702 sponsored transfer failed");\r
    }\r
\r
    /**\r
     * @dev Verify EIP-7702 authorization signature\r
     */\r
    function verifyEIP7702Signature(\r
        address eoa,\r
        address contractCode,\r
        bytes memory callData,\r
        bytes memory signature\r
    ) internal pure returns (bool) {\r
        bytes32 messageHash = keccak256(\r
            abi.encodePacked(\r
                "\x19EIP-7702 Authorization:\
",\r
                eoa,\r
                contractCode,\r
                callData\r
            )\r
        );\r
        \r
        bytes32 r;\r
        bytes32 s;\r
        uint8 v;\r
        \r
        if (signature.length == 65) {\r
            assembly {\r
                r := mload(add(signature, 32))\r
                s := mload(add(signature, 64))\r
                v := byte(0, mload(add(signature, 96)))\r
            }\r
        } else {\r
            return false;\r
        }\r
        \r
        address signer = ecrecover(messageHash, v, r, s);\r
        return signer == eoa;\r
    }\r
\r
    /**\r
     * @dev Verify EIP-7702 batch authorization signature\r
     */\r
    function verifyEIP7702BatchSignature(\r
        address eoa,\r
        address contractCode,\r
        bytes[] memory operations,\r
        bytes memory signature\r
    ) internal pure returns (bool) {\r
        bytes32 messageHash = keccak256(\r
            abi.encodePacked(\r
                "\x19EIP-7702 Batch Authorization:\
",\r
                eoa,\r
                contractCode,\r
                keccak256(abi.encode(operations))\r
            )\r
        );\r
        \r
        bytes32 r;\r
        bytes32 s;\r
        uint8 v;\r
        \r
        if (signature.length == 65) {\r
            assembly {\r
                r := mload(add(signature, 32))\r
                s := mload(add(signature, 64))\r
                v := byte(0, mload(add(signature, 96)))\r
            }\r
        } else {\r
            return false;\r
        }\r
        \r
        address signer = ecrecover(messageHash, v, r, s);\r
        return signer == eoa;\r
    }\r
}\r
"
    },
    "contracts/libraries/TokenDetectionLib.sol": {
      "content": "// SPDX-License-Identifier: MIT\r
pragma solidity ^0.8.19;\r
\r
/**\r
 * @title TokenDetectionLib\r
 * @dev Library for detecting token capabilities and standards\r
 */\r
library TokenDetectionLib {\r
    \r
    /**\r
     * @dev Check if a token supports transferWithAuthorization\r
     */\r
    function supportsTransferWithAuthorization(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature(\r
                "transferWithAuthorization(address,address,uint256,uint256,uint256,bytes32,uint8,bytes32,bytes32)",\r
                address(0), address(0), 0, 0, 0, bytes32(0), 0, bytes32(0), bytes32(0)\r
            )\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports standard ERC-2612 permit\r
     */\r
    function supportsStandardPermit(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature(\r
                "permit(address,address,uint256,uint256,uint8,bytes32,bytes32)",\r
                address(0), address(0), 0, 0, 0, bytes32(0), bytes32(0)\r
            )\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports DAI-style custom permit\r
     */\r
    function supportsDaiPermit(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature(\r
                "permit(address,address,uint256,uint256,bool,uint8,bytes32,bytes32)",\r
                address(0), address(0), 0, 0, false, 0, bytes32(0), bytes32(0)\r
            )\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports ERC-1271 signature validation\r
     */\r
    function supportsERC1271(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature("isValidSignature(bytes32,bytes)", bytes32(0), "")\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports ERC-777\r
     */\r
    function supportsERC777(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature("authorizeOperator(address)", address(0))\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports ERC-1155\r
     */\r
    function supportsERC1155(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature(\r
                "safeTransferFrom(address,address,uint256,uint256,bytes)",\r
                address(0), address(0), 0, 0, ""\r
            )\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token has fee-on-transfer mechanism\r
     */\r
    function supportsFeeOnTransfer(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success1, ) = token.staticcall(abi.encodeWithSignature("fee()"));\r
        (bool success2, ) = token.staticcall(abi.encodeWithSignature("transferFee()"));\r
        (bool success3, ) = token.staticcall(abi.encodeWithSignature("burnRate()"));\r
        \r
        return success1 || success2 || success3;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports meta transactions\r
     */\r
    function supportsMetaTransaction(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success1, ) = token.staticcall(abi.encodeWithSignature("executeMetaTransaction(address,bytes)", address(0), ""));\r
        (bool success2, ) = token.staticcall(abi.encodeWithSignature("executeTransaction(address,uint256,bytes)", address(0), 0, ""));\r
        (bool success3, ) = token.staticcall(abi.encodeWithSignature("executeCall(address,uint256,bytes)", address(0), 0, ""));\r
        \r
        return success1 || success2 || success3;\r
    }\r
\r
    /**\r
     * @dev Check if an address supports EIP-7702 (EOA with temporary smart contract functionality)\r
     */\r
    function supportsEIP7702(address eoa) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(eoa) }\r
        return size == 0; // Only EOAs can support EIP-7702\r
    }\r
\r
    /**\r
     * @dev Detect the type of permit a token uses\r
     * @return permitType 0=none, 1=standard ERC-2612, 2=DAI custom, 3=other custom\r
     */\r
    function detectPermitType(address token) external view returns (uint8 permitType) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return 0;\r
        \r
        // Check for standard ERC-2612 permit\r
        (bool standardSuccess, ) = token.staticcall(\r
            abi.encodeWithSignature(\r
                "permit(address,address,uint256,uint256,uint8,bytes32,bytes32)",\r
                address(0), address(0), 0, 0, 0, bytes32(0), bytes32(0)\r
            )\r
        );\r
        \r
        if (standardSuccess) return 1;\r
        \r
        // Check for DAI-style permit\r
        (bool daiSuccess, ) = token.staticcall(\r
            abi.encodeWithSignature(\r
                "permit(address,address,uint256,uint256,bool,uint8,bytes32,bytes32)",\r
                address(0), address(0), 0, 0, false, 0, bytes32(0), bytes32(0)\r
            )\r
        );\r
        \r
        if (daiSuccess) return 2;\r
        \r
        return 0;\r
    }\r
\r
\r
    /**\r
     * @dev Check if a token supports approve function\r
     */\r
    function supportsApprove(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature("approve(address,uint256)", address(0), 0)\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports allowance function\r
     */\r
    function supportsAllowance(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature("allowance(address,address)", address(0), address(0))\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports balanceOf function\r
     */\r
    function supportsBalanceOf(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature("balanceOf(address)", address(0))\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports transfer function\r
     */\r
    function supportsTransfer(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature("transfer(address,uint256)", address(0), 0)\r
        );\r
        return success;\r
    }\r
\r
    /**\r
     * @dev Check if a token supports transferFrom function\r
     */\r
    function supportsTransferFrom(address token) external view returns (bool) {\r
        uint256 size;\r
        assembly { size := extcodesize(token) }\r
        if (size == 0) return false;\r
        \r
        (bool success, ) = token.staticcall(\r
            abi.encodeWithSignature("transferFrom(address,address,uint256)", address(0), address(0), 0)\r
        );\r
        return success;\r
    }\r
\r
}\r
"
    },
    "contracts/libraries/TokenTransferLib.sol": {
      "content": "// SPDX-License-Identifier: MIT\r
pragma solidity ^0.8.19;\r
\r
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";\r
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";\r
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";\r
\r
/**\r
 * @title TokenTransferLib\r
 * @dev Library for core token transfer operations\r
 */\r
library TokenTransferLib {\r
    using SafeERC20 for IERC20;\r
\r
    // Events\r
    event TokenTransferred(address indexed token, address indexed from, address indexed to, uint256 amount);\r
    event PermitExecuted(address indexed token, address indexed owner, address indexed spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s);\r
    event TransferWithAuthorizationExecuted(address indexed token, address indexed from, address indexed to, uint256 value, uint256 validAfter, uint256 validBefore, bytes32 nonce, uint8 v, bytes32 r, bytes32 s);\r
\r
    /**\r
     * @dev Execute permit and transfer tokens\r
     */\r
    function executePermitAndTransfer(\r
        address token,\r
        address owner,\r
        address spender,\r
        uint256 value,\r
        uint256 deadline,\r
        uint8 v,\r
        bytes32 r,\r
        bytes32 s,\r
        address to\r
    ) external {\r
        IERC20Permit(token).permit(owner, spender, value, deadline, v, r, s);\r
        emit PermitExecuted(token, owner, spender, value, deadline, v, r, s);\r
        \r
        IERC20(token).safeTransferFrom(owner, address(this), value);\r
        IERC20(token).safeTransfer(to, value);\r
        \r
        emit TokenTransferred(token, owner, to, value);\r
    }\r
\r
    /**\r
     * @dev Transfer tokens using existing allowance\r
     */\r
    function transferFromAndForward(\r
        address token,\r
        address from,\r
        uint256 amount,\r
        address to\r
    ) external {\r
        IERC20(token).safeTransferFrom(from, address(this), amount);\r
        IERC20(token).safeTransfer(to, amount);\r
        emit TokenTransferred(token, from, to, amount);\r
    }\r
\r
    /**\r
     * @dev Execute transferWithAuthorization for tokens that support it (like USDC)\r
     */\r
    function executeTransferWithAuthorization(\r
        address token,\r
        address from,\r
        address to,\r
        uint256 value,\r
        uint256 validAfter,\r
        uint256 validBefore,\r
        bytes32 nonce,\r
        uint8 v,\r
        bytes32 r,\r
        bytes32 s\r
    ) external {\r
        (bool success, bytes memory data) = token.call(\r
            abi.encodeWithSignature(\r
                "transferWithAuthorization(address,address,uint256,uint256,uint256,bytes3