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// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

/*@@@@@@@       @@@@@@@@@
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    @@@@@@@@@@@@@@@@@@@@@@@@@
     @@@@@  HYPERLANE  @@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
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// ============ Internal Imports ============
import {StaticAggregationHook} from "./StaticAggregationHook.sol";
import {StaticAddressSetFactory} from "../../libs/StaticAddressSetFactory.sol";

contract StaticAggregationHookFactory is StaticAddressSetFactory {
    function _deployImplementation()
        internal
        virtual
        override
        returns (address)
    {
        return address(new StaticAggregationHook());
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

/*@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
     @@@@@  HYPERLANE  @@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
@@@@@@@@@       @@@@@@@@*/

import {AbstractPostDispatchHook} from "../libs/AbstractPostDispatchHook.sol";
import {IPostDispatchHook} from "../../interfaces/hooks/IPostDispatchHook.sol";
import {MetaProxy} from "../../libs/MetaProxy.sol";

contract StaticAggregationHook is AbstractPostDispatchHook {
    // ============ External functions ============

    /// @inheritdoc IPostDispatchHook
    function hookType() external pure override returns (uint8) {
        return uint8(IPostDispatchHook.Types.AGGREGATION);
    }

    /// @inheritdoc AbstractPostDispatchHook
    function _postDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) internal override {
        address[] memory _hooks = hooks(message);
        uint256 count = _hooks.length;
        for (uint256 i = 0; i < count; i++) {
            uint256 quote = IPostDispatchHook(_hooks[i]).quoteDispatch(
                metadata,
                message
            );

            IPostDispatchHook(_hooks[i]).postDispatch{value: quote}(
                metadata,
                message
            );
        }
    }

    /// @inheritdoc AbstractPostDispatchHook
    function _quoteDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) internal view override returns (uint256) {
        address[] memory _hooks = hooks(message);
        uint256 count = _hooks.length;
        uint256 total = 0;
        for (uint256 i = 0; i < count; i++) {
            total += IPostDispatchHook(_hooks[i]).quoteDispatch(
                metadata,
                message
            );
        }
        return total;
    }

    function hooks(bytes calldata) public pure returns (address[] memory) {
        return abi.decode(MetaProxy.metadata(), (address[]));
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;
// ============ External Imports ============
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {Create2} from "@openzeppelin/contracts/utils/Create2.sol";

// ============ Internal Imports ============
import {MetaProxy} from "./MetaProxy.sol";
import {PackageVersioned} from "../PackageVersioned.sol";
import {IThresholdAddressFactory} from "../interfaces/IThresholdAddressFactory.sol";

abstract contract StaticThresholdAddressSetFactory is
    PackageVersioned,
    IThresholdAddressFactory
{
    // ============ Immutables ============
    address public immutable implementation;

    // ============ Constructor ============

    constructor() {
        implementation = _deployImplementation();
    }

    function _deployImplementation() internal virtual returns (address);

    /**
     * @notice Deploys a StaticThresholdAddressSet contract address for the given
     * values
     * @dev Consider sorting addresses to ensure contract reuse
     * @param _values An array of addresses
     * @param _threshold The threshold value to use
     * @return set The contract address representing this StaticThresholdAddressSet
     */
    function deploy(
        address[] calldata _values,
        uint8 _threshold
    ) public returns (address) {
        require(
            0 < _threshold && _threshold <= _values.length,
            "Invalid threshold"
        );
        (bytes32 _salt, bytes memory _bytecode) = _saltAndBytecode(
            _values,
            _threshold
        );
        address _set = _getAddress(_salt, _bytecode);
        if (!Address.isContract(_set)) {
            _set = Create2.deploy(0, _salt, _bytecode);
        }
        return _set;
    }

    /**
     * @notice Returns the StaticThresholdAddressSet contract address for the given
     * values
     * @dev Consider sorting addresses to ensure contract reuse
     * @param _values An array of addresses
     * @param _threshold The threshold value to use
     * @return set The contract address representing this StaticThresholdAddressSet
     */
    function getAddress(
        address[] calldata _values,
        uint8 _threshold
    ) external view returns (address) {
        (bytes32 _salt, bytes memory _bytecode) = _saltAndBytecode(
            _values,
            _threshold
        );
        return _getAddress(_salt, _bytecode);
    }

    /**
     * @notice Returns the StaticThresholdAddressSet contract address for the given
     * values
     * @param _salt The salt used in Create2
     * @param _bytecode The metaproxy bytecode used in Create2
     * @return set The contract address representing this StaticThresholdAddressSet
     */
    function _getAddress(
        bytes32 _salt,
        bytes memory _bytecode
    ) internal view returns (address) {
        bytes32 _bytecodeHash = keccak256(_bytecode);
        return Create2.computeAddress(_salt, _bytecodeHash);
    }

    /**
     * @notice Returns the create2 salt and bytecode for the given values
     * @param _values An array of addresses
     * @param _threshold The threshold value to use
     * @return _salt The salt used in Create2
     * @return _bytecode The metaproxy bytecode used in Create2
     */
    function _saltAndBytecode(
        address[] calldata _values,
        uint8 _threshold
    ) internal view returns (bytes32, bytes memory) {
        bytes memory _metadata = abi.encode(_values, _threshold);
        bytes memory _bytecode = MetaProxy.bytecode(implementation, _metadata);
        bytes32 _salt = keccak256(_metadata);
        return (_salt, _bytecode);
    }
}

abstract contract StaticAddressSetFactory is StaticThresholdAddressSetFactory {
    /**
     * @notice Deploys a StaticAddressSet contract address for the given
     * values
     * @dev Consider sorting addresses to ensure contract reuse
     * @param _values An array of addresses
     * @return set The contract address representing this StaticAddressSet
     */
    function deploy(address[] calldata _values) external returns (address) {
        return super.deploy(_values, uint8(_values.length));
    }

    /**
     * @notice Returns the StaticAddressSet contract address for the given
     * values
     * @dev Consider sorting addresses to ensure contract reuse
     * @param _values An array of addresses
     * @return set The contract address representing this StaticAddressSet
     */
    function getAddress(
        address[] calldata _values
    ) external view returns (address) {
        (bytes32 _salt, bytes memory _bytecode) = _saltAndBytecode(
            _values,
            uint8(_values.length)
        );
        return super._getAddress(_salt, _bytecode);
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

/*@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
     @@@@@  HYPERLANE  @@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
@@@@@@@@@       @@@@@@@@*/

// ============ Internal Imports ============
import {StandardHookMetadata} from "./StandardHookMetadata.sol";
import {IPostDispatchHook} from "../../interfaces/hooks/IPostDispatchHook.sol";
import {PackageVersioned} from "../../PackageVersioned.sol";

/**
 * @title AbstractPostDispatch
 * @notice Abstract post dispatch hook supporting the current global hook metadata variant.
 */
abstract contract AbstractPostDispatchHook is
    IPostDispatchHook,
    PackageVersioned
{
    using StandardHookMetadata for bytes;

    // ============ External functions ============

    /// @inheritdoc IPostDispatchHook
    function supportsMetadata(
        bytes calldata metadata
    ) public pure virtual override returns (bool) {
        return
            metadata.length == 0 ||
            metadata.variant() == StandardHookMetadata.VARIANT;
    }

    /// @inheritdoc IPostDispatchHook
    function postDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) external payable override {
        require(
            supportsMetadata(metadata),
            "AbstractPostDispatchHook: invalid metadata variant"
        );
        _postDispatch(metadata, message);
    }

    /// @inheritdoc IPostDispatchHook
    function quoteDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) public view override returns (uint256) {
        require(
            supportsMetadata(metadata),
            "AbstractPostDispatchHook: invalid metadata variant"
        );
        return _quoteDispatch(metadata, message);
    }

    // ============ Internal functions ============

    /**
     * @notice Post dispatch hook implementation.
     * @param metadata The metadata of the message being dispatched.
     * @param message The message being dispatched.
     */
    function _postDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) internal virtual;

    /**
     * @notice Quote dispatch hook implementation.
     * @param metadata The metadata of the message being dispatched.
     * @param message The message being dispatched.
     * @return The quote for the dispatch.
     */
    function _quoteDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) internal view virtual returns (uint256);
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

/*@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
     @@@@@  HYPERLANE  @@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
@@@@@@@@@       @@@@@@@@*/

interface IPostDispatchHook {
    enum Types {
        UNUSED,
        ROUTING,
        AGGREGATION,
        MERKLE_TREE,
        INTERCHAIN_GAS_PAYMASTER,
        FALLBACK_ROUTING,
        ID_AUTH_ISM,
        PAUSABLE,
        PROTOCOL_FEE,
        LAYER_ZERO_V1,
        RATE_LIMITED,
        ARB_L2_TO_L1,
        OP_L2_TO_L1
    }

    /**
     * @notice Returns an enum that represents the type of hook
     */
    function hookType() external view returns (uint8);

    /**
     * @notice Returns whether the hook supports metadata
     * @param metadata metadata
     * @return Whether the hook supports metadata
     */
    function supportsMetadata(
        bytes calldata metadata
    ) external view returns (bool);

    /**
     * @notice Post action after a message is dispatched via the Mailbox
     * @param metadata The metadata required for the hook
     * @param message The message passed from the Mailbox.dispatch() call
     */
    function postDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) external payable;

    /**
     * @notice Compute the payment required by the postDispatch call
     * @param metadata The metadata required for the hook
     * @param message The message passed from the Mailbox.dispatch() call
     * @return Quoted payment for the postDispatch call
     */
    function quoteDispatch(
        bytes calldata metadata,
        bytes calldata message
    ) external view returns (uint256);
}

// SPDX-License-Identifier: CC0-1.0
pragma solidity >=0.7.6;

/// @dev Adapted from https://eips.ethereum.org/EIPS/eip-3448
library MetaProxy {
    bytes32 private constant PREFIX =
        hex"600b380380600b3d393df3363d3d373d3d3d3d60368038038091363936013d73";
    bytes13 private constant SUFFIX = hex"5af43d3d93803e603457fd5bf3";

    function bytecode(
        address _implementation,
        bytes memory _metadata
    ) internal pure returns (bytes memory) {
        return
            abi.encodePacked(
                PREFIX,
                bytes20(_implementation),
                SUFFIX,
                _metadata,
                _metadata.length
            );
    }

    function metadata() internal pure returns (bytes memory) {
        bytes memory data;
        assembly {
            let posOfMetadataSize := sub(calldatasize(), 32)
            let size := calldataload(posOfMetadataSize)
            let dataPtr := sub(posOfMetadataSize, size)
            data := mload(64)
            // increment free memory pointer by metadata size + 32 bytes (length)
            mstore(64, add(data, add(size, 32)))
            mstore(data, size)
            let memPtr := add(data, 32)
            calldatacopy(memPtr, dataPtr, size)
        }
        return data;
    }
}

// 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);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Create2.sol)

pragma solidity ^0.8.0;

/**
 * @dev Helper to make usage of the `CREATE2` EVM opcode easier and safer.
 * `CREATE2` can be used to compute in advance the address where a smart
 * contract will be deployed, which allows for interesting new mechanisms known
 * as 'counterfactual interactions'.
 *
 * See the https://eips.ethereum.org/EIPS/eip-1014#motivation[EIP] for more
 * information.
 */
library Create2 {
    /**
     * @dev Deploys a contract using `CREATE2`. The address where the contract
     * will be deployed can be known in advance via {computeAddress}.
     *
     * The bytecode for a contract can be obtained from Solidity with
     * `type(contractName).creationCode`.
     *
     * Requirements:
     *
     * - `bytecode` must not be empty.
     * - `salt` must have not been used for `bytecode` already.
     * - the factory must have a balance of at least `amount`.
     * - if `amount` is non-zero, `bytecode` must have a `payable` constructor.
     */
    function deploy(uint256 amount, bytes32 salt, bytes memory bytecode) internal returns (address addr) {
        require(address(this).balance >= amount, "Create2: insufficient balance");
        require(bytecode.length != 0, "Create2: bytecode length is zero");
        /// @solidity memory-safe-assembly
        assembly {
            addr := create2(amount, add(bytecode, 0x20), mload(bytecode), salt)
        }
        require(addr != address(0), "Create2: Failed on deploy");
    }

    /**
     * @dev Returns the address where a contract will be stored if deployed via {deploy}. Any change in the
     * `bytecodeHash` or `salt` will result in a new destination address.
     */
    function computeAddress(bytes32 salt, bytes32 bytecodeHash) internal view returns (address) {
        return computeAddress(salt, bytecodeHash, address(this));
    }

    /**
     * @dev Returns the address where a contract will be stored if deployed via {deploy} from a contract located at
     * `deployer`. If `deployer` is this contract's address, returns the same value as {computeAddress}.
     */
    function computeAddress(bytes32 salt, bytes32 bytecodeHash, address deployer) internal pure returns (address addr) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40) // Get free memory pointer

            // |                   | ↓ ptr ...  ↓ ptr + 0x0B (start) ...  ↓ ptr + 0x20 ...  ↓ ptr + 0x40 ...   |
            // |-------------------|---------------------------------------------------------------------------|
            // | bytecodeHash      |                                                        CCCCCCCCCCCCC...CC |
            // | salt              |                                      BBBBBBBBBBBBB...BB                   |
            // | deployer          | 000000...0000AAAAAAAAAAAAAAAAAAA...AA                                     |
            // | 0xFF              |            FF                                                             |
            // |-------------------|---------------------------------------------------------------------------|
            // | memory            | 000000...00FFAAAAAAAAAAAAAAAAAAA...AABBBBBBBBBBBBB...BBCCCCCCCCCCCCC...CC |
            // | keccak(start, 85) |            ↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑ |

            mstore(add(ptr, 0x40), bytecodeHash)
            mstore(add(ptr, 0x20), salt)
            mstore(ptr, deployer) // Right-aligned with 12 preceding garbage bytes
            let start := add(ptr, 0x0b) // The hashed data starts at the final garbage byte which we will set to 0xff
            mstore8(start, 0xff)
            addr := keccak256(start, 85)
        }
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.6.11;

/**
 * @title PackageVersioned
 * @notice Package version getter for contracts
 **/
abstract contract PackageVersioned {
    // GENERATED CODE - DO NOT EDIT
    string public constant PACKAGE_VERSION = "5.8.3";
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

interface IThresholdAddressFactory {
    function deploy(
        address[] calldata _values,
        uint8 _threshold
    ) external returns (address);
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

/*@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
     @@@@@  HYPERLANE  @@@@@@@
    @@@@@@@@@@@@@@@@@@@@@@@@@
   @@@@@@@@@       @@@@@@@@@
  @@@@@@@@@       @@@@@@@@@
 @@@@@@@@@       @@@@@@@@@
@@@@@@@@@       @@@@@@@@*/

/**
 * Format of metadata:
 *
 * [0:2] variant
 * [2:34] msg.value
 * [34:66] Gas limit for message (IGP)
 * [66:86] Refund address for message (IGP)
 * [86:] Custom metadata
 */
library StandardHookMetadata {
    struct Metadata {
        uint16 variant;
        uint256 msgValue;
        uint256 gasLimit;
        address refundAddress;
    }

    uint8 private constant VARIANT_OFFSET = 0;
    uint8 private constant MSG_VALUE_OFFSET = 2;
    uint8 private constant GAS_LIMIT_OFFSET = 34;
    uint8 private constant REFUND_ADDRESS_OFFSET = 66;
    uint256 private constant MIN_METADATA_LENGTH = 86;

    uint16 public constant VARIANT = 1;

    /**
     * @notice Returns the variant of the metadata.
     * @param _metadata ABI encoded standard hook metadata.
     * @return variant of the metadata as uint8.
     */
    function variant(bytes calldata _metadata) internal pure returns (uint16) {
        if (_metadata.length < VARIANT_OFFSET + 2) return 0;
        return uint16(bytes2(_metadata[VARIANT_OFFSET:VARIANT_OFFSET + 2]));
    }

    /**
     * @notice Returns the specified value for the message.
     * @param _metadata ABI encoded standard hook metadata.
     * @param _default Default fallback value.
     * @return Value for the message as uint256.
     */
    function msgValue(
        bytes calldata _metadata,
        uint256 _default
    ) internal pure returns (uint256) {
        if (_metadata.length < MSG_VALUE_OFFSET + 32) return _default;
        return
            uint256(bytes32(_metadata[MSG_VALUE_OFFSET:MSG_VALUE_OFFSET + 32]));
    }

    /**
     * @notice Returns the specified gas limit for the message.
     * @param _metadata ABI encoded standard hook metadata.
     * @param _default Default fallback gas limit.
     * @return Gas limit for the message as uint256.
     */
    function gasLimit(
        bytes calldata _metadata,
        uint256 _default
    ) internal pure returns (uint256) {
        if (_metadata.length < GAS_LIMIT_OFFSET + 32) return _default;
        return
            uint256(bytes32(_metadata[GAS_LIMIT_OFFSET:GAS_LIMIT_OFFSET + 32]));
    }

    /**
     * @notice Returns the specified refund address for the message.
     * @param _metadata ABI encoded standard hook metadata.
     * @param _default Default fallback refund address.
     * @return Refund address for the message as address.
     */
    function refundAddress(
        bytes calldata _metadata,
        address _default
    ) internal pure returns (address) {
        if (_metadata.length < REFUND_ADDRESS_OFFSET + 20) return _default;
        return
            address(
                bytes20(
                    _metadata[REFUND_ADDRESS_OFFSET:REFUND_ADDRESS_OFFSET + 20]
                )
            );
    }

    /**
     * @notice Returns any custom metadata.
     * @param _metadata ABI encoded standard hook metadata.
     * @return Custom metadata.
     */
    function getCustomMetadata(
        bytes calldata _metadata
    ) internal pure returns (bytes calldata) {
        if (_metadata.length < MIN_METADATA_LENGTH) return _metadata[0:0];
        return _metadata[MIN_METADATA_LENGTH:];
    }

    /**
     * @notice Formats the specified gas limit and refund address into standard hook metadata.
     * @param _msgValue msg.value for the message.
     * @param _gasLimit Gas limit for the message.
     * @param _refundAddress Refund address for the message.
     * @param _customMetadata Additional metadata to include in the standard hook metadata.
     * @return ABI encoded standard hook metadata.
     */
    function formatMetadata(
        uint256 _msgValue,
        uint256 _gasLimit,
        address _refundAddress,
        bytes memory _customMetadata
    ) internal pure returns (bytes memory) {
        return
            abi.encodePacked(
                VARIANT,
                _msgValue,
                _gasLimit,
                _refundAddress,
                _customMetadata
            );
    }

    /**
     * @notice Formats the specified gas limit and refund address into standard hook metadata.
     * @param _msgValue msg.value for the message.
     * @return ABI encoded standard hook metadata.
     */
    function overrideMsgValue(
        uint256 _msgValue
    ) internal view returns (bytes memory) {
        return formatMetadata(_msgValue, uint256(0), msg.sender, "");
    }

    /**
     * @notice Formats the specified gas limit and refund address into standard hook metadata.
     * @param _gasLimit Gas limit for the message.
     * @return ABI encoded standard hook metadata.
     */
    function overrideGasLimit(
        uint256 _gasLimit
    ) internal view returns (bytes memory) {
        return formatMetadata(uint256(0), _gasLimit, msg.sender, "");
    }

    /**
     * @notice Formats the specified refund address into standard hook metadata.
     * @param _refundAddress Refund address for the message.
     * @return ABI encoded standard hook metadata.
     */
    function overrideRefundAddress(
        address _refundAddress
    ) internal pure returns (bytes memory) {
        return formatMetadata(uint256(0), uint256(0), _refundAddress, "");
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"name":"PACKAGE_VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"_values","type":"address[]"}],"name":"deploy","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_values","type":"address[]"},{"internalType":"uint8","name":"_threshold","type":"uint8"}],"name":"deploy","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_values","type":"address[]"}],"name":"getAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"_values","type":"address[]"},{"internalType":"uint8","name":"_threshold","type":"uint8"}],"name":"getAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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