creation_sourcecode: {{
    "language": "Solidity",
    "settings": {
      "evmVersion": "paris",
      "optimizer": {
        "enabled": true,
        "runs": 5000
      },
      "outputSelection": {
        "*": {
          "*": [
            "evm.bytecode",
            "evm.deployedBytecode",
            "devdoc",
            "userdoc",
            "metadata",
            "abi"
          ]
        }
      }
    },
    "sources": {
      "@ensdomains/buffer/contracts/Buffer.sol": {
        "content": "// SPDX-License-Identifier: BSD-2-Clause\npragma solidity ^0.8.4;\n\n/**\n* @dev A library for working with mutable byte buffers in Solidity.\n*\n* Byte buffers are mutable and expandable, and provide a variety of primitives\n* for appending to them. At any time you can fetch a bytes object containing the\n* current contents of the buffer. The bytes object should not be stored between\n* operations, as it may change due to resizing of the buffer.\n*/\nlibrary Buffer {\n    /**\n    * @dev Represents a mutable buffer. Buffers have a current value (buf) and\n    *      a capacity. The capacity may be longer than the current value, in\n    *      which case it can be extended without the need to allocate more memory.\n    */\n    struct buffer {\n        bytes buf;\n        uint capacity;\n    }\n\n    /**\n    * @dev Initializes a buffer with an initial capacity.\n    * @param buf The buffer to initialize.\n    * @param capacity The number of bytes of space to allocate the buffer.\n    * @return The buffer, for chaining.\n    */\n    function init(buffer memory buf, uint capacity) internal pure returns(buffer memory) {\n        if (capacity % 32 != 0) {\n            capacity += 32 - (capacity % 32);\n        }\n        // Allocate space for the buffer data\n        buf.capacity = capacity;\n        assembly {\n            let ptr := mload(0x40)\n            mstore(buf, ptr)\n            mstore(ptr, 0)\n            let fpm := add(32, add(ptr, capacity))\n            if lt(fpm, ptr) {\n                revert(0, 0)\n            }\n            mstore(0x40, fpm)\n        }\n        return buf;\n    }\n\n    /**\n    * @dev Initializes a new buffer from an existing bytes object.\n    *      Changes to the buffer may mutate the original value.\n    * @param b The bytes object to initialize the buffer with.\n    * @return A new buffer.\n    */\n    function fromBytes(bytes memory b) internal pure returns(buffer memory) {\n        buffer memory buf;\n        buf.buf = b;\n        buf.capacity = b.length;\n        return buf;\n    }\n\n    function resize(buffer memory buf, uint capacity) private pure {\n        bytes memory oldbuf = buf.buf;\n        init(buf, capacity);\n        append(buf, oldbuf);\n    }\n\n    /**\n    * @dev Sets buffer length to 0.\n    * @param buf The buffer to truncate.\n    * @return The original buffer, for chaining..\n    */\n    function truncate(buffer memory buf) internal pure returns (buffer memory) {\n        assembly {\n            let bufptr := mload(buf)\n            mstore(bufptr, 0)\n        }\n        return buf;\n    }\n\n    /**\n    * @dev Appends len bytes of a byte string to a buffer. Resizes if doing so would exceed\n    *      the capacity of the buffer.\n    * @param buf The buffer to append to.\n    * @param data The data to append.\n    * @param len The number of bytes to copy.\n    * @return The original buffer, for chaining.\n    */\n    function append(buffer memory buf, bytes memory data, uint len) internal pure returns(buffer memory) {\n        require(len <= data.length);\n\n        uint off = buf.buf.length;\n        uint newCapacity = off + len;\n        if (newCapacity > buf.capacity) {\n            resize(buf, newCapacity * 2);\n        }\n\n        uint dest;\n        uint src;\n        assembly {\n            // Memory address of the buffer data\n            let bufptr := mload(buf)\n            // Length of existing buffer data\n            let buflen := mload(bufptr)\n            // Start address = buffer address + offset + sizeof(buffer length)\n            dest := add(add(bufptr, 32), off)\n            // Update buffer length if we're extending it\n            if gt(newCapacity, buflen) {\n                mstore(bufptr, newCapacity)\n            }\n            src := add(data, 32)\n        }\n\n        // Copy word-length chunks while possible\n        for (; len >= 32; len -= 32) {\n            assembly {\n                mstore(dest, mload(src))\n            }\n            dest += 32;\n            src += 32;\n        }\n\n        // Copy remaining bytes\n        unchecked {\n            uint mask = (256 ** (32 - len)) - 1;\n            assembly {\n                let srcpart := and(mload(src), not(mask))\n                let destpart := and(mload(dest), mask)\n                mstore(dest, or(destpart, srcpart))\n            }\n        }\n\n        return buf;\n    }\n\n    /**\n    * @dev Appends a byte string to a buffer. Resizes if doing so would exceed\n    *      the capacity of the buffer.\n    * @param buf The buffer to append to.\n    * @param data The data to append.\n    * @return The original buffer, for chaining.\n    */\n    function append(buffer memory buf, bytes memory data) internal pure returns (buffer memory) {\n        return append(buf, data, data.length);\n    }\n\n    /**\n    * @dev Appends a byte to the buffer. Resizes if doing so would exceed the\n    *      capacity of the buffer.\n    * @param buf The buffer to append to.\n    * @param data The data to append.\n    * @return The original buffer, for chaining.\n    */\n    function appendUint8(buffer memory buf, uint8 data) internal pure returns(buffer memory) {\n        uint off = buf.buf.length;\n        uint offPlusOne = off + 1;\n        if (off >= buf.capacity) {\n            resize(buf, offPlusOne * 2);\n        }\n\n        assembly {\n            // Memory address of the buffer data\n            let bufptr := mload(buf)\n            // Address = buffer address + sizeof(buffer length) + off\n            let dest := add(add(bufptr, off), 32)\n            mstore8(dest, data)\n            // Update buffer length if we extended it\n            if gt(offPlusOne, mload(bufptr)) {\n                mstore(bufptr, offPlusOne)\n            }\n        }\n\n        return buf;\n    }\n\n    /**\n    * @dev Appends len bytes of bytes32 to a buffer. Resizes if doing so would\n    *      exceed the capacity of the buffer.\n    * @param buf The buffer to append to.\n    * @param data The data to append.\n    * @param len The number of bytes to write (left-aligned).\n    * @return The original buffer, for chaining.\n    */\n    function append(buffer memory buf, bytes32 data, uint len) private pure returns(buffer memory) {\n        uint off = buf.buf.length;\n        uint newCapacity = len + off;\n        if (newCapacity > buf.capacity) {\n            resize(buf, newCapacity * 2);\n        }\n\n        unchecked {\n            uint mask = (256 ** len) - 1;\n            // Right-align data\n            data = data >> (8 * (32 - len));\n            assembly {\n                // Memory address of the buffer data\n                let bufptr := mload(buf)\n                // Address = buffer address + sizeof(buffer length) + newCapacity\n                let dest := add(bufptr, newCapacity)\n                mstore(dest, or(and(mload(dest), not(mask)), data))\n                // Update buffer length if we extended it\n                if gt(newCapacity, mload(bufptr)) {\n                    mstore(bufptr, newCapacity)\n                }\n            }\n        }\n        return buf;\n    }\n\n    /**\n    * @dev Appends a bytes20 to the buffer. Resizes if doing so would exceed\n    *      the capacity of the buffer.\n    * @param buf The buffer to append to.\n    * @param data The data to append.\n    * @return The original buffer, for chhaining.\n    */\n    function appendBytes20(buffer memory buf, bytes20 data) internal pure returns (buffer memory) {\n        return append(buf, bytes32(data), 20);\n    }\n\n    /**\n    * @dev Appends a bytes32 to the buffer. Resizes if doing so would exceed\n    *      the capacity of the buffer.\n    * @param buf The buffer to append to.\n    * @param data The data to append.\n    * @return The original buffer, for chaining.\n    */\n    function appendBytes32(buffer memory buf, bytes32 data) internal pure returns (buffer memory) {\n        return append(buf, data, 32);\n    }\n\n    /**\n     * @dev Appends a byte to the end of the buffer. Resizes if doing so would\n     *      exceed the capacity of the buffer.\n     * @param buf The buffer to append to.\n     * @param data The data to append.\n     * @param len The number of bytes to write (right-aligned).\n     * @return The original buffer.\n     */\n    function appendInt(buffer memory buf, uint data, uint len) internal pure returns(buffer memory) {\n        uint off = buf.buf.length;\n        uint newCapacity = len + off;\n        if (newCapacity > buf.capacity) {\n            resize(buf, newCapacity * 2);\n        }\n\n        uint mask = (256 ** len) - 1;\n        assembly {\n            // Memory address of the buffer data\n            let bufptr := mload(buf)\n            // Address = buffer address + sizeof(buffer length) + newCapacity\n            let dest := add(bufptr, newCapacity)\n            mstore(dest, or(and(mload(dest), not(mask)), data))\n            // Update buffer length if we extended it\n            if gt(newCapacity, mload(bufptr)) {\n                mstore(bufptr, newCapacity)\n            }\n        }\n        return buf;\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OApp.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\n// @dev Import the 'MessagingFee' and 'MessagingReceipt' so it's exposed to OApp implementers\n// solhint-disable-next-line no-unused-import\nimport { OAppSender, MessagingFee, MessagingReceipt } from \"./OAppSender.sol\";\n// @dev Import the 'Origin' so it's exposed to OApp implementers\n// solhint-disable-next-line no-unused-import\nimport { OAppReceiver, Origin } from \"./OAppReceiver.sol\";\nimport { OAppCore } from \"./OAppCore.sol\";\n\n/**\n * @title OApp\n * @dev Abstract contract serving as the base for OApp implementation, combining OAppSender and OAppReceiver functionality.\n */\nabstract contract OApp is OAppSender, OAppReceiver {\n    /**\n     * @dev Constructor to initialize the OApp with the provided endpoint and owner.\n     * @param _endpoint The address of the LOCAL LayerZero endpoint.\n     * @param _delegate The delegate capable of making OApp configurations inside of the endpoint.\n     */\n    constructor(address _endpoint, address _delegate) OAppCore(_endpoint, _delegate) {}\n\n    /**\n     * @notice Retrieves the OApp version information.\n     * @return senderVersion The version of the OAppSender.sol implementation.\n     * @return receiverVersion The version of the OAppReceiver.sol implementation.\n     */\n    function oAppVersion()\n        public\n        pure\n        virtual\n        override(OAppSender, OAppReceiver)\n        returns (uint64 senderVersion, uint64 receiverVersion)\n    {\n        return (SENDER_VERSION, RECEIVER_VERSION);\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OAppCore.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\nimport { Ownable } from \"@openzeppelin/contracts/access/Ownable.sol\";\nimport { IOAppCore, ILayerZeroEndpointV2 } from \"./interfaces/IOAppCore.sol\";\n\n/**\n * @title OAppCore\n * @dev Abstract contract implementing the IOAppCore interface with basic OApp configurations.\n */\nabstract contract OAppCore is IOAppCore, Ownable {\n    // The LayerZero endpoint associated with the given OApp\n    ILayerZeroEndpointV2 public immutable endpoint;\n\n    // Mapping to store peers associated with corresponding endpoints\n    mapping(uint32 eid => bytes32 peer) public peers;\n\n    /**\n     * @dev Constructor to initialize the OAppCore with the provided endpoint and delegate.\n     * @param _endpoint The address of the LOCAL Layer Zero endpoint.\n     * @param _delegate The delegate capable of making OApp configurations inside of the endpoint.\n     *\n     * @dev The delegate typically should be set as the owner of the contract.\n     */\n    constructor(address _endpoint, address _delegate) {\n        endpoint = ILayerZeroEndpointV2(_endpoint);\n\n        if (_delegate == address(0)) revert InvalidDelegate();\n        endpoint.setDelegate(_delegate);\n    }\n\n    /**\n     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.\n     * @param _eid The endpoint ID.\n     * @param _peer The address of the peer to be associated with the corresponding endpoint.\n     *\n     * @dev Only the owner/admin of the OApp can call this function.\n     * @dev Indicates that the peer is trusted to send LayerZero messages to this OApp.\n     * @dev Set this to bytes32(0) to remove the peer address.\n     * @dev Peer is a bytes32 to accommodate non-evm chains.\n     */\n    function setPeer(uint32 _eid, bytes32 _peer) public virtual onlyOwner {\n        _setPeer(_eid, _peer);\n    }\n\n    /**\n     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.\n     * @param _eid The endpoint ID.\n     * @param _peer The address of the peer to be associated with the corresponding endpoint.\n     *\n     * @dev Indicates that the peer is trusted to send LayerZero messages to this OApp.\n     * @dev Set this to bytes32(0) to remove the peer address.\n     * @dev Peer is a bytes32 to accommodate non-evm chains.\n     */\n    function _setPeer(uint32 _eid, bytes32 _peer) internal virtual {\n        peers[_eid] = _peer;\n        emit PeerSet(_eid, _peer);\n    }\n\n    /**\n     * @notice Internal function to get the peer address associated with a specific endpoint; reverts if NOT set.\n     * ie. the peer is set to bytes32(0).\n     * @param _eid The endpoint ID.\n     * @return peer The address of the peer associated with the specified endpoint.\n     */\n    function _getPeerOrRevert(uint32 _eid) internal view virtual returns (bytes32) {\n        bytes32 peer = peers[_eid];\n        if (peer == bytes32(0)) revert NoPeer(_eid);\n        return peer;\n    }\n\n    /**\n     * @notice Sets the delegate address for the OApp.\n     * @param _delegate The address of the delegate to be set.\n     *\n     * @dev Only the owner/admin of the OApp can call this function.\n     * @dev Provides the ability for a delegate to set configs, on behalf of the OApp, directly on the Endpoint contract.\n     */\n    function setDelegate(address _delegate) public onlyOwner {\n        endpoint.setDelegate(_delegate);\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OAppReceiver.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\nimport { IOAppReceiver, Origin } from \"./interfaces/IOAppReceiver.sol\";\nimport { OAppCore } from \"./OAppCore.sol\";\n\n/**\n * @title OAppReceiver\n * @dev Abstract contract implementing the ILayerZeroReceiver interface and extending OAppCore for OApp receivers.\n */\nabstract contract OAppReceiver is IOAppReceiver, OAppCore {\n    // Custom error message for when the caller is not the registered endpoint/\n    error OnlyEndpoint(address addr);\n\n    // @dev The version of the OAppReceiver implementation.\n    // @dev Version is bumped when changes are made to this contract.\n    uint64 internal constant RECEIVER_VERSION = 2;\n\n    /**\n     * @notice Retrieves the OApp version information.\n     * @return senderVersion The version of the OAppSender.sol contract.\n     * @return receiverVersion The version of the OAppReceiver.sol contract.\n     *\n     * @dev Providing 0 as the default for OAppSender version. Indicates that the OAppSender is not implemented.\n     * ie. this is a RECEIVE only OApp.\n     * @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions.\n     */\n    function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) {\n        return (0, RECEIVER_VERSION);\n    }\n\n    /**\n     * @notice Indicates whether an address is an approved composeMsg sender to the Endpoint.\n     * @dev _origin The origin information containing the source endpoint and sender address.\n     *  - srcEid: The source chain endpoint ID.\n     *  - sender: The sender address on the src chain.\n     *  - nonce: The nonce of the message.\n     * @dev _message The lzReceive payload.\n     * @param _sender The sender address.\n     * @return isSender Is a valid sender.\n     *\n     * @dev Applications can optionally choose to implement separate composeMsg senders that are NOT the bridging layer.\n     * @dev The default sender IS the OAppReceiver implementer.\n     */\n    function isComposeMsgSender(\n        Origin calldata /*_origin*/,\n        bytes calldata /*_message*/,\n        address _sender\n    ) public view virtual returns (bool) {\n        return _sender == address(this);\n    }\n\n    /**\n     * @notice Checks if the path initialization is allowed based on the provided origin.\n     * @param origin The origin information containing the source endpoint and sender address.\n     * @return Whether the path has been initialized.\n     *\n     * @dev This indicates to the endpoint that the OApp has enabled msgs for this particular path to be received.\n     * @dev This defaults to assuming if a peer has been set, its initialized.\n     * Can be overridden by the OApp if there is other logic to determine this.\n     */\n    function allowInitializePath(Origin calldata origin) public view virtual returns (bool) {\n        return peers[origin.srcEid] == origin.sender;\n    }\n\n    /**\n     * @notice Retrieves the next nonce for a given source endpoint and sender address.\n     * @dev _srcEid The source endpoint ID.\n     * @dev _sender The sender address.\n     * @return nonce The next nonce.\n     *\n     * @dev The path nonce starts from 1. If 0 is returned it means that there is NO nonce ordered enforcement.\n     * @dev Is required by the off-chain executor to determine the OApp expects msg execution is ordered.\n     * @dev This is also enforced by the OApp.\n     * @dev By default this is NOT enabled. ie. nextNonce is hardcoded to return 0.\n     */\n    function nextNonce(uint32 /*_srcEid*/, bytes32 /*_sender*/) public view virtual returns (uint64 nonce) {\n        return 0;\n    }\n\n    /**\n     * @dev Entry point for receiving messages or packets from the endpoint.\n     * @param _origin The origin information containing the source endpoint and sender address.\n     *  - srcEid: The source chain endpoint ID.\n     *  - sender: The sender address on the src chain.\n     *  - nonce: The nonce of the message.\n     * @param _guid The unique identifier for the received LayerZero message.\n     * @param _message The payload of the received message.\n     * @param _executor The address of the executor for the received message.\n     * @param _extraData Additional arbitrary data provided by the corresponding executor.\n     *\n     * @dev Entry point for receiving msg/packet from the LayerZero endpoint.\n     */\n    function lzReceive(\n        Origin calldata _origin,\n        bytes32 _guid,\n        bytes calldata _message,\n        address _executor,\n        bytes calldata _extraData\n    ) public payable virtual {\n        // Ensures that only the endpoint can attempt to lzReceive() messages to this OApp.\n        if (address(endpoint) != msg.sender) revert OnlyEndpoint(msg.sender);\n\n        // Ensure that the sender matches the expected peer for the source endpoint.\n        if (_getPeerOrRevert(_origin.srcEid) != _origin.sender) revert OnlyPeer(_origin.srcEid, _origin.sender);\n\n        // Call the internal OApp implementation of lzReceive.\n        _lzReceive(_origin, _guid, _message, _executor, _extraData);\n    }\n\n    /**\n     * @dev Internal function to implement lzReceive logic without needing to copy the basic parameter validation.\n     */\n    function _lzReceive(\n        Origin calldata _origin,\n        bytes32 _guid,\n        bytes calldata _message,\n        address _executor,\n        bytes calldata _extraData\n    ) internal virtual;\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OAppSender.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\nimport { SafeERC20, IERC20 } from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport { MessagingParams, MessagingFee, MessagingReceipt } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol\";\nimport { OAppCore } from \"./OAppCore.sol\";\n\n/**\n * @title OAppSender\n * @dev Abstract contract implementing the OAppSender functionality for sending messages to a LayerZero endpoint.\n */\nabstract contract OAppSender is OAppCore {\n    using SafeERC20 for IERC20;\n\n    // Custom error messages\n    error NotEnoughNative(uint256 msgValue);\n    error LzTokenUnavailable();\n\n    // @dev The version of the OAppSender implementation.\n    // @dev Version is bumped when changes are made to this contract.\n    uint64 internal constant SENDER_VERSION = 1;\n\n    /**\n     * @notice Retrieves the OApp version information.\n     * @return senderVersion The version of the OAppSender.sol contract.\n     * @return receiverVersion The version of the OAppReceiver.sol contract.\n     *\n     * @dev Providing 0 as the default for OAppReceiver version. Indicates that the OAppReceiver is not implemented.\n     * ie. this is a SEND only OApp.\n     * @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions\n     */\n    function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) {\n        return (SENDER_VERSION, 0);\n    }\n\n    /**\n     * @dev Internal function to interact with the LayerZero EndpointV2.quote() for fee calculation.\n     * @param _dstEid The destination endpoint ID.\n     * @param _message The message payload.\n     * @param _options Additional options for the message.\n     * @param _payInLzToken Flag indicating whether to pay the fee in LZ tokens.\n     * @return fee The calculated MessagingFee for the message.\n     *      - nativeFee: The native fee for the message.\n     *      - lzTokenFee: The LZ token fee for the message.\n     */\n    function _quote(\n        uint32 _dstEid,\n        bytes memory _message,\n        bytes memory _options,\n        bool _payInLzToken\n    ) internal view virtual returns (MessagingFee memory fee) {\n        return\n            endpoint.quote(\n                MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _payInLzToken),\n                address(this)\n            );\n    }\n\n    /**\n     * @dev Internal function to interact with the LayerZero EndpointV2.send() for sending a message.\n     * @param _dstEid The destination endpoint ID.\n     * @param _message The message payload.\n     * @param _options Additional options for the message.\n     * @param _fee The calculated LayerZero fee for the message.\n     *      - nativeFee: The native fee.\n     *      - lzTokenFee: The lzToken fee.\n     * @param _refundAddress The address to receive any excess fee values sent to the endpoint.\n     * @return receipt The receipt for the sent message.\n     *      - guid: The unique identifier for the sent message.\n     *      - nonce: The nonce of the sent message.\n     *      - fee: The LayerZero fee incurred for the message.\n     */\n    function _lzSend(\n        uint32 _dstEid,\n        bytes memory _message,\n        bytes memory _options,\n        MessagingFee memory _fee,\n        address _refundAddress\n    ) internal virtual returns (MessagingReceipt memory receipt) {\n        // @dev Push corresponding fees to the endpoint, any excess is sent back to the _refundAddress from the endpoint.\n        uint256 messageValue = _payNative(_fee.nativeFee);\n        if (_fee.lzTokenFee > 0) _payLzToken(_fee.lzTokenFee);\n\n        return\n            // solhint-disable-next-line check-send-result\n            endpoint.send{ value: messageValue }(\n                MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _fee.lzTokenFee > 0),\n                _refundAddress\n            );\n    }\n\n    /**\n     * @dev Internal function to pay the native fee associated with the message.\n     * @param _nativeFee The native fee to be paid.\n     * @return nativeFee The amount of native currency paid.\n     *\n     * @dev If the OApp needs to initiate MULTIPLE LayerZero messages in a single transaction,\n     * this will need to be overridden because msg.value would contain multiple lzFees.\n     * @dev Should be overridden in the event the LayerZero endpoint requires a different native currency.\n     * @dev Some EVMs use an ERC20 as a method for paying transactions/gasFees.\n     * @dev The endpoint is EITHER/OR, ie. it will NOT support both types of native payment at a time.\n     */\n    function _payNative(uint256 _nativeFee) internal virtual returns (uint256 nativeFee) {\n        if (msg.value != _nativeFee) revert NotEnoughNative(msg.value);\n        return _nativeFee;\n    }\n\n    /**\n     * @dev Internal function to pay the LZ token fee associated with the message.\n     * @param _lzTokenFee The LZ token fee to be paid.\n     *\n     * @dev If the caller is trying to pay in the specified lzToken, then the lzTokenFee is passed to the endpoint.\n     * @dev Any excess sent, is passed back to the specified _refundAddress in the _lzSend().\n     */\n    function _payLzToken(uint256 _lzTokenFee) internal virtual {\n        // @dev Cannot cache the token because it is not immutable in the endpoint.\n        address lzToken = endpoint.lzToken();\n        if (lzToken == address(0)) revert LzTokenUnavailable();\n\n        // Pay LZ token fee by sending tokens to the endpoint.\n        IERC20(lzToken).safeTransferFrom(msg.sender, address(endpoint), _lzTokenFee);\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/interfaces/IOAppCore.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\nimport { ILayerZeroEndpointV2 } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol\";\n\n/**\n * @title IOAppCore\n */\ninterface IOAppCore {\n    // Custom error messages\n    error OnlyPeer(uint32 eid, bytes32 sender);\n    error NoPeer(uint32 eid);\n    error InvalidEndpointCall();\n    error InvalidDelegate();\n\n    // Event emitted when a peer (OApp) is set for a corresponding endpoint\n    event PeerSet(uint32 eid, bytes32 peer);\n\n    /**\n     * @notice Retrieves the OApp version information.\n     * @return senderVersion The version of the OAppSender.sol contract.\n     * @return receiverVersion The version of the OAppReceiver.sol contract.\n     */\n    function oAppVersion() external view returns (uint64 senderVersion, uint64 receiverVersion);\n\n    /**\n     * @notice Retrieves the LayerZero endpoint associated with the OApp.\n     * @return iEndpoint The LayerZero endpoint as an interface.\n     */\n    function endpoint() external view returns (ILayerZeroEndpointV2 iEndpoint);\n\n    /**\n     * @notice Retrieves the peer (OApp) associated with a corresponding endpoint.\n     * @param _eid The endpoint ID.\n     * @return peer The peer address (OApp instance) associated with the corresponding endpoint.\n     */\n    function peers(uint32 _eid) external view returns (bytes32 peer);\n\n    /**\n     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.\n     * @param _eid The endpoint ID.\n     * @param _peer The address of the peer to be associated with the corresponding endpoint.\n     */\n    function setPeer(uint32 _eid, bytes32 _peer) external;\n\n    /**\n     * @notice Sets the delegate address for the OApp Core.\n     * @param _delegate The address of the delegate to be set.\n     */\n    function setDelegate(address _delegate) external;\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/interfaces/IOAppOptionsType3.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\n/**\n * @dev Struct representing enforced option parameters.\n */\nstruct EnforcedOptionParam {\n    uint32 eid; // Endpoint ID\n    uint16 msgType; // Message Type\n    bytes options; // Additional options\n}\n\n/**\n * @title IOAppOptionsType3\n * @dev Interface for the OApp with Type 3 Options, allowing the setting and combining of enforced options.\n */\ninterface IOAppOptionsType3 {\n    // Custom error message for invalid options\n    error InvalidOptions(bytes options);\n\n    // Event emitted when enforced options are set\n    event EnforcedOptionSet(EnforcedOptionParam[] _enforcedOptions);\n\n    /**\n     * @notice Sets enforced options for specific endpoint and message type combinations.\n     * @param _enforcedOptions An array of EnforcedOptionParam structures specifying enforced options.\n     */\n    function setEnforcedOptions(EnforcedOptionParam[] calldata _enforcedOptions) external;\n\n    /**\n     * @notice Combines options for a given endpoint and message type.\n     * @param _eid The endpoint ID.\n     * @param _msgType The OApp message type.\n     * @param _extraOptions Additional options passed by the caller.\n     * @return options The combination of caller specified options AND enforced options.\n     */\n    function combineOptions(\n        uint32 _eid,\n        uint16 _msgType,\n        bytes calldata _extraOptions\n    ) external view returns (bytes memory options);\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/interfaces/IOAppReceiver.sol": {
        "content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.20;\n\nimport { ILayerZeroReceiver, Origin } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroReceiver.sol\";\n\ninterface IOAppReceiver is ILayerZeroReceiver {\n    /**\n     * @notice Indicates whether an address is an approved composeMsg sender to the Endpoint.\n     * @param _origin The origin information containing the source endpoint and sender address.\n     *  - srcEid: The source chain endpoint ID.\n     *  - sender: The sender address on the src chain.\n     *  - nonce: The nonce of the message.\n     * @param _message The lzReceive payload.\n     * @param _sender The sender address.\n     * @return isSender Is a valid sender.\n     *\n     * @dev Applications can optionally choose to implement a separate composeMsg sender that is NOT the bridging layer.\n     * @dev The default sender IS the OAppReceiver implementer.\n     */\n    function isComposeMsgSender(\n        Origin calldata _origin,\n        bytes calldata _message,\n        address _sender\n    ) external view returns (bool isSender);\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/libs/OAppOptionsType3.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\nimport { Ownable } from \"@openzeppelin/contracts/access/Ownable.sol\";\nimport { IOAppOptionsType3, EnforcedOptionParam } from \"../interfaces/IOAppOptionsType3.sol\";\n\n/**\n * @title OAppOptionsType3\n * @dev Abstract contract implementing the IOAppOptionsType3 interface with type 3 options.\n */\nabstract contract OAppOptionsType3 is IOAppOptionsType3, Ownable {\n    uint16 internal constant OPTION_TYPE_3 = 3;\n\n    // @dev The \"msgType\" should be defined in the child contract.\n    mapping(uint32 eid => mapping(uint16 msgType => bytes enforcedOption)) public enforcedOptions;\n\n    /**\n     * @dev Sets the enforced options for specific endpoint and message type combinations.\n     * @param _enforcedOptions An array of EnforcedOptionParam structures specifying enforced options.\n     *\n     * @dev Only the owner/admin of the OApp can call this function.\n     * @dev Provides a way for the OApp to enforce things like paying for PreCrime, AND/OR minimum dst lzReceive gas amounts etc.\n     * @dev These enforced options can vary as the potential options/execution on the remote may differ as per the msgType.\n     * eg. Amount of lzReceive() gas necessary to deliver a lzCompose() message adds overhead you dont want to pay\n     * if you are only making a standard LayerZero message ie. lzReceive() WITHOUT sendCompose().\n     */\n    function setEnforcedOptions(EnforcedOptionParam[] calldata _enforcedOptions) public virtual onlyOwner {\n        _setEnforcedOptions(_enforcedOptions);\n    }\n\n    /**\n     * @dev Sets the enforced options for specific endpoint and message type combinations.\n     * @param _enforcedOptions An array of EnforcedOptionParam structures specifying enforced options.\n     *\n     * @dev Provides a way for the OApp to enforce things like paying for PreCrime, AND/OR minimum dst lzReceive gas amounts etc.\n     * @dev These enforced options can vary as the potential options/execution on the remote may differ as per the msgType.\n     * eg. Amount of lzReceive() gas necessary to deliver a lzCompose() message adds overhead you dont want to pay\n     * if you are only making a standard LayerZero message ie. lzReceive() WITHOUT sendCompose().\n     */\n    function _setEnforcedOptions(EnforcedOptionParam[] memory _enforcedOptions) internal virtual {\n        for (uint256 i = 0; i < _enforcedOptions.length; i++) {\n            // @dev Enforced options are only available for optionType 3, as type 1 and 2 dont support combining.\n            _assertOptionsType3(_enforcedOptions[i].options);\n            enforcedOptions[_enforcedOptions[i].eid][_enforcedOptions[i].msgType] = _enforcedOptions[i].options;\n        }\n\n        emit EnforcedOptionSet(_enforcedOptions);\n    }\n\n    /**\n     * @notice Combines options for a given endpoint and message type.\n     * @param _eid The endpoint ID.\n     * @param _msgType The OAPP message type.\n     * @param _extraOptions Additional options passed by the caller.\n     * @return options The combination of caller specified options AND enforced options.\n     *\n     * @dev If there is an enforced lzReceive option:\n     * - {gasLimit: 200k, msg.value: 1 ether} AND a caller supplies a lzReceive option: {gasLimit: 100k, msg.value: 0.5 ether}\n     * - The resulting options will be {gasLimit: 300k, msg.value: 1.5 ether} when the message is executed on the remote lzReceive() function.\n     * @dev This presence of duplicated options is handled off-chain in the verifier/executor.\n     */\n    function combineOptions(\n        uint32 _eid,\n        uint16 _msgType,\n        bytes calldata _extraOptions\n    ) public view virtual returns (bytes memory) {\n        bytes memory enforced = enforcedOptions[_eid][_msgType];\n\n        // No enforced options, pass whatever the caller supplied, even if it's empty or legacy type 1/2 options.\n        if (enforced.length == 0) return _extraOptions;\n\n        // No caller options, return enforced\n        if (_extraOptions.length == 0) return enforced;\n\n        // @dev If caller provided _extraOptions, must be type 3 as its the ONLY type that can be combined.\n        if (_extraOptions.length >= 2) {\n            _assertOptionsType3(_extraOptions);\n            // @dev Remove the first 2 bytes containing the type from the _extraOptions and combine with enforced.\n            return bytes.concat(enforced, _extraOptions[2:]);\n        }\n\n        // No valid set of options was found.\n        revert InvalidOptions(_extraOptions);\n    }\n\n    /**\n     * @dev Internal function to assert that options are of type 3.\n     * @param _options The options to be checked.\n     */\n    function _assertOptionsType3(bytes memory _options) internal pure virtual {\n        uint16 optionsType;\n        assembly {\n            optionsType := mload(add(_options, 2))\n        }\n        if (optionsType != OPTION_TYPE_3) revert InvalidOptions(_options);\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/oft/interfaces/IOFT.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\nimport { MessagingReceipt, MessagingFee } from \"../../oapp/OAppSender.sol\";\n\n/**\n * @dev Struct representing token parameters for the OFT send() operation.\n */\nstruct SendParam {\n    uint32 dstEid; // Destination endpoint ID.\n    bytes32 to; // Recipient address.\n    uint256 amountLD; // Amount to send in local decimals.\n    uint256 minAmountLD; // Minimum amount to send in local decimals.\n    bytes extraOptions; // Additional options supplied by the caller to be used in the LayerZero message.\n    bytes composeMsg; // The composed message for the send() operation.\n    bytes oftCmd; // The OFT command to be executed, unused in default OFT implementations.\n}\n\n/**\n * @dev Struct representing OFT limit information.\n * @dev These amounts can change dynamically and are up the the specific oft implementation.\n */\nstruct OFTLimit {\n    uint256 minAmountLD; // Minimum amount in local decimals that can be sent to the recipient.\n    uint256 maxAmountLD; // Maximum amount in local decimals that can be sent to the recipient.\n}\n\n/**\n * @dev Struct representing OFT receipt information.\n */\nstruct OFTReceipt {\n    uint256 amountSentLD; // Amount of tokens ACTUALLY debited from the sender in local decimals.\n    // @dev In non-default implementations, the amountReceivedLD COULD differ from this value.\n    uint256 amountReceivedLD; // Amount of tokens to be received on the remote side.\n}\n\n/**\n * @dev Struct representing OFT fee details.\n * @dev Future proof mechanism to provide a standardized way to communicate fees to things like a UI.\n */\nstruct OFTFeeDetail {\n    int256 feeAmountLD; // Amount of the fee in local decimals.\n    string description; // Description of the fee.\n}\n\n/**\n * @title IOFT\n * @dev Interface for the OftChain (OFT) token.\n * @dev Does not inherit ERC20 to accommodate usage by OFTAdapter as well.\n * @dev This specific interface ID is '0x02e49c2c'.\n */\ninterface IOFT {\n    // Custom error messages\n    error InvalidLocalDecimals();\n    error SlippageExceeded(uint256 amountLD, uint256 minAmountLD);\n\n    // Events\n    event OFTSent(\n        bytes32 indexed guid, // GUID of the OFT message.\n        uint32 dstEid, // Destination Endpoint ID.\n        address indexed fromAddress, // Address of the sender on the src chain.\n        uint256 amountSentLD, // Amount of tokens sent in local decimals.\n        uint256 amountReceivedLD // Amount of tokens received in local decimals.\n    );\n    event OFTReceived(\n        bytes32 indexed guid, // GUID of the OFT message.\n        uint32 srcEid, // Source Endpoint ID.\n        address indexed toAddress, // Address of the recipient on the dst chain.\n        uint256 amountReceivedLD // Amount of tokens received in local decimals.\n    );\n\n    /**\n     * @notice Retrieves interfaceID and the version of the OFT.\n     * @return interfaceId The interface ID.\n     * @return version The version.\n     *\n     * @dev interfaceId: This specific interface ID is '0x02e49c2c'.\n     * @dev version: Indicates a cross-chain compatible msg encoding with other OFTs.\n     * @dev If a new feature is added to the OFT cross-chain msg encoding, the version will be incremented.\n     * ie. localOFT version(x,1) CAN send messages to remoteOFT version(x,1)\n     */\n    function oftVersion() external view returns (bytes4 interfaceId, uint64 version);\n\n    /**\n     * @notice Retrieves the address of the token associated with the OFT.\n     * @return token The address of the ERC20 token implementation.\n     */\n    function token() external view returns (address);\n\n    /**\n     * @notice Indicates whether the OFT contract requires approval of the 'token()' to send.\n     * @return requiresApproval Needs approval of the underlying token implementation.\n     *\n     * @dev Allows things like wallet implementers to determine integration requirements,\n     * without understanding the underlying token implementation.\n     */\n    function approvalRequired() external view returns (bool);\n\n    /**\n     * @notice Retrieves the shared decimals of the OFT.\n     * @return sharedDecimals The shared decimals of the OFT.\n     */\n    function sharedDecimals() external view returns (uint8);\n\n    /**\n     * @notice Provides a quote for OFT-related operations.\n     * @param _sendParam The parameters for the send operation.\n     * @return limit The OFT limit information.\n     * @return oftFeeDetails The details of OFT fees.\n     * @return receipt The OFT receipt information.\n     */\n    function quoteOFT(\n        SendParam calldata _sendParam\n    ) external view returns (OFTLimit memory, OFTFeeDetail[] memory oftFeeDetails, OFTReceipt memory);\n\n    /**\n     * @notice Provides a quote for the send() operation.\n     * @param _sendParam The parameters for the send() operation.\n     * @param _payInLzToken Flag indicating whether the caller is paying in the LZ token.\n     * @return fee The calculated LayerZero messaging fee from the send() operation.\n     *\n     * @dev MessagingFee: LayerZero msg fee\n     *  - nativeFee: The native fee.\n     *  - lzTokenFee: The lzToken fee.\n     */\n    function quoteSend(SendParam calldata _sendParam, bool _payInLzToken) external view returns (MessagingFee memory);\n\n    /**\n     * @notice Executes the send() operation.\n     * @param _sendParam The parameters for the send operation.\n     * @param _fee The fee information supplied by the caller.\n     *      - nativeFee: The native fee.\n     *      - lzTokenFee: The lzToken fee.\n     * @param _refundAddress The address to receive any excess funds from fees etc. on the src.\n     * @return receipt The LayerZero messaging receipt from the send() operation.\n     * @return oftReceipt The OFT receipt information.\n     *\n     * @dev MessagingReceipt: LayerZero msg receipt\n     *  - guid: The unique identifier for the sent message.\n     *  - nonce: The nonce of the sent message.\n     *  - fee: The LayerZero fee incurred for the message.\n     */\n    function send(\n        SendParam calldata _sendParam,\n        MessagingFee calldata _fee,\n        address _refundAddress\n    ) external payable returns (MessagingReceipt memory, OFTReceipt memory);\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/OAppPreCrimeSimulator.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\nimport { Ownable } from \"@openzeppelin/contracts/access/Ownable.sol\";\nimport { IPreCrime } from \"./interfaces/IPreCrime.sol\";\nimport { IOAppPreCrimeSimulator, InboundPacket, Origin } from \"./interfaces/IOAppPreCrimeSimulator.sol\";\n\n/**\n * @title OAppPreCrimeSimulator\n * @dev Abstract contract serving as the base for preCrime simulation functionality in an OApp.\n */\nabstract contract OAppPreCrimeSimulator is IOAppPreCrimeSimulator, Ownable {\n    // The address of the preCrime implementation.\n    address public preCrime;\n\n    /**\n     * @dev Retrieves the address of the OApp contract.\n     * @return The address of the OApp contract.\n     *\n     * @dev The simulator contract is the base contract for the OApp by default.\n     * @dev If the simulator is a separate contract, override this function.\n     */\n    function oApp() external view virtual returns (address) {\n        return address(this);\n    }\n\n    /**\n     * @dev Sets the preCrime contract address.\n     * @param _preCrime The address of the preCrime contract.\n     */\n    function setPreCrime(address _preCrime) public virtual onlyOwner {\n        preCrime = _preCrime;\n        emit PreCrimeSet(_preCrime);\n    }\n\n    /**\n     * @dev Interface for pre-crime simulations. Always reverts at the end with the simulation results.\n     * @param _packets An array of InboundPacket objects representing received packets to be delivered.\n     *\n     * @dev WARNING: MUST revert at the end with the simulation results.\n     * @dev Gives the preCrime implementation the ability to mock sending packets to the lzReceive function,\n     * WITHOUT actually executing them.\n     */\n    function lzReceiveAndRevert(InboundPacket[] calldata _packets) public payable virtual {\n        for (uint256 i = 0; i < _packets.length; i++) {\n            InboundPacket calldata packet = _packets[i];\n\n            // Ignore packets that are not from trusted peers.\n            if (!isPeer(packet.origin.srcEid, packet.origin.sender)) continue;\n\n            // @dev Because a verifier is calling this function, it doesnt have access to executor params:\n            //  - address _executor\n            //  - bytes calldata _extraData\n            // preCrime will NOT work for OApps that rely on these two parameters inside of their _lzReceive().\n            // They are instead stubbed to default values, address(0) and bytes(\"\")\n            // @dev Calling this.lzReceiveSimulate removes ability for assembly return 0 callstack exit,\n            // which would cause the revert to be ignored.\n            this.lzReceiveSimulate{ value: packet.value }(\n                packet.origin,\n                packet.guid,\n                packet.message,\n                packet.executor,\n                packet.extraData\n            );\n        }\n\n        // @dev Revert with the simulation results. msg.sender must implement IPreCrime.buildSimulationResult().\n        revert SimulationResult(IPreCrime(msg.sender).buildSimulationResult());\n    }\n\n    /**\n     * @dev Is effectively an internal function because msg.sender must be address(this).\n     * Allows resetting the call stack for 'internal' calls.\n     * @param _origin The origin information containing the source endpoint and sender address.\n     *  - srcEid: The source chain endpoint ID.\n     *  - sender: The sender address on the src chain.\n     *  - nonce: The nonce of the message.\n     * @param _guid The unique identifier of the packet.\n     * @param _message The message payload of the packet.\n     * @param _executor The executor address for the packet.\n     * @param _extraData Additional data for the packet.\n     */\n    function lzReceiveSimulate(\n        Origin calldata _origin,\n        bytes32 _guid,\n        bytes calldata _message,\n        address _executor,\n        bytes calldata _extraData\n    ) external payable virtual {\n        // @dev Ensure ONLY can be called 'internally'.\n        if (msg.sender != address(this)) revert OnlySelf();\n        _lzReceiveSimulate(_origin, _guid, _message, _executor, _extraData);\n    }\n\n    /**\n     * @dev Internal function to handle the OAppPreCrimeSimulator simulated receive.\n     * @param _origin The origin information.\n     *  - srcEid: The source chain endpoint ID.\n     *  - sender: The sender address from the src chain.\n     *  - nonce: The nonce of the LayerZero message.\n     * @param _guid The GUID of the LayerZero message.\n     * @param _message The LayerZero message.\n     * @param _executor The address of the off-chain executor.\n     * @param _extraData Arbitrary data passed by the msg executor.\n     *\n     * @dev Enables the preCrime simulator to mock sending lzReceive() messages,\n     * routes the msg down from the OAppPreCrimeSimulator, and back up to the OAppReceiver.\n     */\n    function _lzReceiveSimulate(\n        Origin calldata _origin,\n        bytes32 _guid,\n        bytes calldata _message,\n        address _executor,\n        bytes calldata _extraData\n    ) internal virtual;\n\n    /**\n     * @dev checks if the specified peer is considered 'trusted' by the OApp.\n     * @param _eid The endpoint Id to check.\n     * @param _peer The peer to check.\n     * @return Whether the peer passed is considered 'trusted' by the OApp.\n     */\n    function isPeer(uint32 _eid, bytes32 _peer) public view virtual returns (bool);\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/interfaces/IOAppPreCrimeSimulator.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\n// @dev Import the Origin so it's exposed to OAppPreCrimeSimulator implementers.\n// solhint-disable-next-line no-unused-import\nimport { InboundPacket, Origin } from \"../libs/Packet.sol\";\n\n/**\n * @title IOAppPreCrimeSimulator Interface\n * @dev Interface for the preCrime simulation functionality in an OApp.\n */\ninterface IOAppPreCrimeSimulator {\n    // @dev simulation result used in PreCrime implementation\n    error SimulationResult(bytes result);\n    error OnlySelf();\n\n    /**\n     * @dev Emitted when the preCrime contract address is set.\n     * @param preCrimeAddress The address of the preCrime contract.\n     */\n    event PreCrimeSet(address preCrimeAddress);\n\n    /**\n     * @dev Retrieves the address of the preCrime contract implementation.\n     * @return The address of the preCrime contract.\n     */\n    function preCrime() external view returns (address);\n\n    /**\n     * @dev Retrieves the address of the OApp contract.\n     * @return The address of the OApp contract.\n     */\n    function oApp() external view returns (address);\n\n    /**\n     * @dev Sets the preCrime contract address.\n     * @param _preCrime The address of the preCrime contract.\n     */\n    function setPreCrime(address _preCrime) external;\n\n    /**\n     * @dev Mocks receiving a packet, then reverts with a series of data to infer the state/result.\n     * @param _packets An array of LayerZero InboundPacket objects representing received packets.\n     */\n    function lzReceiveAndRevert(InboundPacket[] calldata _packets) external payable;\n\n    /**\n     * @dev checks if the specified peer is considered 'trusted' by the OApp.\n     * @param _eid The endpoint Id to check.\n     * @param _peer The peer to check.\n     * @return Whether the peer passed is considered 'trusted' by the OApp.\n     */\n    function isPeer(uint32 _eid, bytes32 _peer) external view returns (bool);\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/interfaces/IPreCrime.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\nstruct PreCrimePeer {\n    uint32 eid;\n    bytes32 preCrime;\n    bytes32 oApp;\n}\n\n// TODO not done yet\ninterface IPreCrime {\n    error OnlyOffChain();\n\n    // for simulate()\n    error PacketOversize(uint256 max, uint256 actual);\n    error PacketUnsorted();\n    error SimulationFailed(bytes reason);\n\n    // for preCrime()\n    error SimulationResultNotFound(uint32 eid);\n    error InvalidSimulationResult(uint32 eid, bytes reason);\n    error CrimeFound(bytes crime);\n\n    function getConfig(bytes[] calldata _packets, uint256[] calldata _packetMsgValues) external returns (bytes memory);\n\n    function simulate(\n        bytes[] calldata _packets,\n        uint256[] calldata _packetMsgValues\n    ) external payable returns (bytes memory);\n\n    function buildSimulationResult() external view returns (bytes memory);\n\n    function preCrime(\n        bytes[] calldata _packets,\n        uint256[] calldata _packetMsgValues,\n        bytes[] calldata _simulations\n    ) external;\n\n    function version() external view returns (uint64 major, uint8 minor);\n}\n"
      },
      "@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/libs/Packet.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.20;\n\nimport { Origin } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol\";\nimport { PacketV1Codec } from \"@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/PacketV1Codec.sol\";\n\n/**\n * @title InboundPacket\n * @dev Structure representing an inbound packet received by the contract.\n */\nstruct InboundPacket {\n    Origin origin; // Origin information of the packet.\n    uint32 dstEid; // Destination endpointId of the packet.\n    address receiver; // Receiver address for the packet.\n    bytes32 guid; // Unique identifier of the packet.\n    uint256 value; // msg.value of the packet.\n    address executor; // Executor address for the packet.\n    bytes message; // Message payload of the packet.\n    bytes extraData; // Additional arbitrary data for the packet.\n}\n\n/**\n * @title PacketDecoder\n * @dev Library for decoding LayerZero packets.\n */\nlibrary PacketDecoder {\n    using PacketV1Codec for bytes;\n\n    /**\n     * @dev Decode an inbound packet from the given packet data.\n     * @param _packet The packet data to decode.\n     * @return packet An InboundPacket struct representing the decoded packet.\n     */\n    function decode(bytes calldata _packet) internal pure returns (InboundPacket memory packet) {\n        packet.origin = Origin(_packet.srcEid(), _packet.sender(), _packet.nonce());\n        packet.dstEid = _packet.dstEid();\n        packet.receiver = _packet.receiverB20();\n        packet.guid = _packet.guid();\n        packet.message = _packet.message();\n    }\n\n    /**\n     * @dev Decode multiple inbound packets from the given packet data and associated message values.\n     * @param _packets An array of packet data to decode.\n     * @param _packetMsgValues An array of associated message values for each packet.\n     * @return packets An array of InboundPacket structs representing the decoded packets.\n     */\n    function decode(\n        bytes[] calldata _packets,\n        uint256[] memory _packetMsgValues\n    ) internal pure returns (InboundPacket[] memory packets) {\n        packets = new InboundPacket[](_packets.length);\n        for (uint256 i = 0; i < _packets.length; i++) {\n            bytes calldata packet = _packets[i];\n            packets[i] = PacketDecoder.decode(packet);\n            // @dev Allows the verifier to specify the msg.value that gets passed in lzReceive.\n            packets[i].value = _packetMsgValues[i];\n        }\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nimport { IMessageLibManager } from \"./IMessageLibManager.sol\";\nimport { IMessagingComposer } from \"./IMessagingComposer.sol\";\nimport { IMessagingChannel } from \"./IMessagingChannel.sol\";\nimport { IMessagingContext } from \"./IMessagingContext.sol\";\n\nstruct MessagingParams {\n    uint32 dstEid;\n    bytes32 receiver;\n    bytes message;\n    bytes options;\n    bool payInLzToken;\n}\n\nstruct MessagingReceipt {\n    bytes32 guid;\n    uint64 nonce;\n    MessagingFee fee;\n}\n\nstruct MessagingFee {\n    uint256 nativeFee;\n    uint256 lzTokenFee;\n}\n\nstruct Origin {\n    uint32 srcEid;\n    bytes32 sender;\n    uint64 nonce;\n}\n\nenum ExecutionState {\n    NotExecutable,\n    Executable,\n    Executed\n}\n\ninterface ILayerZeroEndpointV2 is IMessageLibManager, IMessagingComposer, IMessagingChannel, IMessagingContext {\n    event PacketSent(bytes encodedPayload, bytes options, address sendLibrary);\n\n    event PacketVerified(Origin origin, address receiver, bytes32 payloadHash);\n\n    event PacketDelivered(Origin origin, address receiver);\n\n    event LzReceiveAlert(\n        address indexed receiver,\n        address indexed executor,\n        Origin origin,\n        bytes32 guid,\n        uint256 gas,\n        uint256 value,\n        bytes message,\n        bytes extraData,\n        bytes reason\n    );\n\n    event LzTokenSet(address token);\n\n    function quote(MessagingParams calldata _params, address _sender) external view returns (MessagingFee memory);\n\n    function send(\n        MessagingParams calldata _params,\n        address _refundAddress\n    ) external payable returns (MessagingReceipt memory);\n\n    function verify(Origin calldata _origin, address _receiver, bytes32 _payloadHash) external;\n\n    function verifiable(\n        Origin calldata _origin,\n        address _receiver,\n        address _receiveLib,\n        bytes32 _payloadHash\n    ) external view returns (bool);\n\n    function executable(Origin calldata _origin, address _receiver) external view returns (ExecutionState);\n\n    function lzReceive(\n        Origin calldata _origin,\n        address _receiver,\n        bytes32 _guid,\n        bytes calldata _message,\n        bytes calldata _extraData\n    ) external payable;\n\n    // oapp can burn messages partially by calling this function with its own business logic if messages are verified in order\n    function clear(address _oapp, Origin calldata _origin, bytes32 _guid, bytes calldata _message) external;\n\n    function setLzToken(address _lzToken) external;\n\n    function lzToken() external view returns (address);\n\n    function nativeToken() external view returns (address);\n\n    function setDelegate(address _delegate) external;\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroReceiver.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nimport { Origin } from \"./ILayerZeroEndpointV2.sol\";\n\ninterface ILayerZeroReceiver {\n    function allowInitializePath(Origin calldata _origin) external view returns (bool);\n\n    // todo: move to OAppReceiver? it is just convention for executor. we may can change it in a new Receiver version\n    function nextNonce(uint32 _eid, bytes32 _sender) external view returns (uint64);\n\n    function lzReceive(\n        Origin calldata _origin,\n        bytes32 _guid,\n        bytes calldata _message,\n        address _executor,\n        bytes calldata _extraData\n    ) external payable;\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessageLib.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nimport { IERC165 } from \"@openzeppelin/contracts/utils/introspection/IERC165.sol\";\n\nimport { SetConfigParam } from \"./IMessageLibManager.sol\";\n\nenum MessageLibType {\n    Send,\n    Receive,\n    SendAndReceive\n}\n\ninterface IMessageLib is IERC165 {\n    function setConfig(address _oapp, SetConfigParam[] calldata _config) external;\n\n    function getConfig(uint32 _eid, address _oapp, uint32 _configType) external view returns (bytes memory config);\n\n    function isSupportedEid(uint32 _eid) external view returns (bool);\n\n    // message libs of same major version are compatible\n    function version() external view returns (uint64 major, uint8 minor, uint8 endpointVersion);\n\n    function messageLibType() external view returns (MessageLibType);\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessageLibManager.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nstruct SetConfigParam {\n    uint32 eid;\n    uint32 configType;\n    bytes config;\n}\n\ninterface IMessageLibManager {\n    struct Timeout {\n        address lib;\n        uint256 expiry;\n    }\n\n    event LibraryRegistered(address newLib);\n    event DefaultSendLibrarySet(uint32 eid, address newLib);\n    event DefaultReceiveLibrarySet(uint32 eid, address oldLib, address newLib);\n    event DefaultReceiveLibraryTimeoutSet(uint32 eid, address oldLib, uint256 expiry);\n    event SendLibrarySet(address sender, uint32 eid, address newLib);\n    event ReceiveLibrarySet(address receiver, uint32 eid, address oldLib, address newLib);\n    event ReceiveLibraryTimeoutSet(address receiver, uint32 eid, address oldLib, uint256 timeout);\n\n    function registerLibrary(address _lib) external;\n\n    function isRegisteredLibrary(address _lib) external view returns (bool);\n\n    function getRegisteredLibraries() external view returns (address[] memory);\n\n    function setDefaultSendLibrary(uint32 _eid, address _newLib) external;\n\n    function defaultSendLibrary(uint32 _eid) external view returns (address);\n\n    function setDefaultReceiveLibrary(uint32 _eid, address _newLib, uint256 _timeout) external;\n\n    function defaultReceiveLibrary(uint32 _eid) external view returns (address);\n\n    function setDefaultReceiveLibraryTimeout(uint32 _eid, address _lib, uint256 _expiry) external;\n\n    function defaultReceiveLibraryTimeout(uint32 _eid) external view returns (address lib, uint256 expiry);\n\n    function isSupportedEid(uint32 _eid) external view returns (bool);\n\n    /// ------------------- OApp interfaces -------------------\n    function setSendLibrary(address _oapp, uint32 _eid, address _newLib) external;\n\n    function getSendLibrary(address _sender, uint32 _eid) external view returns (address lib);\n\n    function isDefaultSendLibrary(address _sender, uint32 _eid) external view returns (bool);\n\n    function setReceiveLibrary(address _oapp, uint32 _eid, address _newLib, uint256 _gracePeriod) external;\n\n    function getReceiveLibrary(address _receiver, uint32 _eid) external view returns (address lib, bool isDefault);\n\n    function setReceiveLibraryTimeout(address _oapp, uint32 _eid, address _lib, uint256 _gracePeriod) external;\n\n    function receiveLibraryTimeout(address _receiver, uint32 _eid) external view returns (address lib, uint256 expiry);\n\n    function setConfig(address _oapp, address _lib, SetConfigParam[] calldata _params) external;\n\n    function getConfig(\n        address _oapp,\n        address _lib,\n        uint32 _eid,\n        uint32 _configType\n    ) external view returns (bytes memory config);\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingChannel.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface IMessagingChannel {\n    event InboundNonceSkipped(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce);\n    event PacketNilified(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);\n    event PacketBurnt(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);\n\n    function eid() external view returns (uint32);\n\n    // this is an emergency function if a message cannot be verified for some reasons\n    // required to provide _nextNonce to avoid race condition\n    function skip(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce) external;\n\n    function nilify(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;\n\n    function burn(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;\n\n    function nextGuid(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (bytes32);\n\n    function inboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);\n\n    function outboundNonce(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (uint64);\n\n    function inboundPayloadHash(\n        address _receiver,\n        uint32 _srcEid,\n        bytes32 _sender,\n        uint64 _nonce\n    ) external view returns (bytes32);\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingComposer.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface IMessagingComposer {\n    event ComposeSent(address from, address to, bytes32 guid, uint16 index, bytes message);\n    event ComposeDelivered(address from, address to, bytes32 guid, uint16 index);\n    event LzComposeAlert(\n        address indexed from,\n        address indexed to,\n        address indexed executor,\n        bytes32 guid,\n        uint16 index,\n        uint256 gas,\n        uint256 value,\n        bytes message,\n        bytes extraData,\n        bytes reason\n    );\n\n    function composeQueue(\n        address _from,\n        address _to,\n        bytes32 _guid,\n        uint16 _index\n    ) external view returns (bytes32 messageHash);\n\n    function sendCompose(address _to, bytes32 _guid, uint16 _index, bytes calldata _message) external;\n\n    function lzCompose(\n        address _from,\n        address _to,\n        bytes32 _guid,\n        uint16 _index,\n        bytes calldata _message,\n        bytes calldata _extraData\n    ) external payable;\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingContext.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\ninterface IMessagingContext {\n    function isSendingMessage() external view returns (bool);\n\n    function getSendContext() external view returns (uint32 dstEid, address sender);\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ISendLib.sol": {
        "content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.8.0;\n\nimport { MessagingFee } from \"./ILayerZeroEndpointV2.sol\";\nimport { IMessageLib } from \"./IMessageLib.sol\";\n\nstruct Packet {\n    uint64 nonce;\n    uint32 srcEid;\n    address sender;\n    uint32 dstEid;\n    bytes32 receiver;\n    bytes32 guid;\n    bytes message;\n}\n\ninterface ISendLib is IMessageLib {\n    function send(\n        Packet calldata _packet,\n        bytes calldata _options,\n        bool _payInLzToken\n    ) external returns (MessagingFee memory, bytes memory encodedPacket);\n\n    function quote(\n        Packet calldata _packet,\n        bytes calldata _options,\n        bool _payInLzToken\n    ) external view returns (MessagingFee memory);\n\n    function setTreasury(address _treasury) external;\n\n    function withdrawFee(address _to, uint256 _amount) external;\n\n    function withdrawLzTokenFee(address _lzToken, address _to, uint256 _amount) external;\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/AddressCast.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.22;\n\nimport { Errors } from \"./Errors.sol\";\n\nlibrary AddressCast {\n    function toBytes32(bytes calldata _addressBytes) internal pure returns (bytes32 result) {\n        if (_addressBytes.length > 32) revert Errors.InvalidAddress();\n        result = bytes32(_addressBytes);\n        unchecked {\n            uint256 offset = 32 - _addressBytes.length;\n            result = result >> (offset * 8);\n        }\n    }\n\n    function toBytes32(address _address) internal pure returns (bytes32 result) {\n        result = bytes32(uint256(uint160(_address)));\n    }\n\n    function toBytes(bytes32 _addressBytes32, uint256 _size) internal pure returns (bytes memory result) {\n        if (_size == 0 || _size > 32) revert Errors.InvalidSizeForAddress();\n        result = new bytes(_size);\n        unchecked {\n            uint256 offset = 256 - _size * 8;\n            assembly {\n                mstore(add(result, 32), shl(offset, _addressBytes32))\n            }\n        }\n    }\n\n    function toAddress(bytes32 _addressBytes32) internal pure returns (address result) {\n        result = address(uint160(uint256(_addressBytes32)));\n    }\n\n    function toAddress(bytes calldata _addressBytes) internal pure returns (address result) {\n        if (_addressBytes.length != 20) revert Errors.InvalidAddress();\n        result = address(bytes20(_addressBytes));\n    }\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/Errors.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.22;\n\nlibrary Errors {\n    error LzTokenUnavailable();\n    error OnlyAltToken();\n    error InvalidReceiveLibrary();\n    error InvalidNonce(uint64 nonce);\n    error InvalidArgument();\n    error InvalidExpiry();\n    error InvalidAmount(uint256 required, uint256 supplied);\n    error OnlyRegisteredOrDefaultLib();\n    error OnlyRegisteredLib();\n    error OnlyNonDefaultLib();\n    error Unauthorized();\n    error DefaultSendLibUnavailable();\n    error DefaultReceiveLibUnavailable();\n    error PathNotInitializable();\n    error PathNotVerifiable();\n    error OnlySendLib();\n    error OnlyReceiveLib();\n    error UnsupportedEid();\n    error UnsupportedInterface();\n    error AlreadyRegistered();\n    error SameValue();\n    error InvalidPayloadHash();\n    error PayloadHashNotFound(bytes32 expected, bytes32 actual);\n    error ComposeNotFound(bytes32 expected, bytes32 actual);\n    error ComposeExists();\n    error SendReentrancy();\n    error NotImplemented();\n    error InvalidAddress();\n    error InvalidSizeForAddress();\n    error InsufficientFee(\n        uint256 requiredNative,\n        uint256 suppliedNative,\n        uint256 requiredLzToken,\n        uint256 suppliedLzToken\n    );\n    error ZeroLzTokenFee();\n}\n"
      },
      "@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/PacketV1Codec.sol": {
        "content": "// SPDX-License-Identifier: LZBL-1.2\n\npragma solidity ^0.8.22;\n\nimport { Packet } from \"../../interfaces/ISendLib.sol\";\nimport { AddressCast } from \"../../libs/AddressCast.sol\";\n\nlibrary PacketV1Codec {\n    using AddressCast for address;\n    using AddressCast for bytes32;\n\n    uint8 internal constant PACKET_VERSION = 1;\n\n    // header (version + nonce + path)\n    // version\n    uint256 private constant PACKET_VERSION_OFFSET = 0;\n    //    nonce\n    uint256 private constant NONCE_OFFSET = 1;\n    //    path\n    uint256 private constant SRC_EID_OFFSET = 9;\n    uint256 private constant SENDER_OFFSET = 13;\n    uint256 private constant DST_EID_OFFSET = 45;\n    uint256 private constant RECEIVER_OFFSET = 49;\n    // payload (guid + message)\n    uint256 private constant GUID_OFFSET = 81; // keccak256(nonce + path)\n    uint256 private constant MESSAGE_OFFSET = 113;\n\n    function encode(Packet memory _packet) internal pure returns (bytes memory encodedPacket) {\n        encodedPacket = abi.encodePacked(\n            PACKET_VERSION,\n            _packet.nonce,\n            _packet.srcEid,\n            _packet.sender.toBytes32(),\n            _packet.dstEid,\n            _packet.receiver,\n            _packet.guid,\n            _packet.message\n        );\n    }\n\n    function encodePacketHeader(Packet memory _packet) internal pure returns (bytes memory) {\n        return\n            abi.encodePacked(\n                PACKET_VERSION,\n                _packet.nonce,\n                _packet.srcEid,\n                _packet.sender.toBytes32(),\n                _packet.dstEid,\n                _packet.receiver\n            );\n    }\n\n    function encodePayload(Packet memory _packet) internal pure returns (bytes memory) {\n        return abi.encodePacked(_packet.guid, _packet.message);\n    }\n\n    function header(bytes calldata _packet) internal pure returns (bytes calldata) {\n        return _packet[0:GUID_OFFSET];\n    }\n\n    function version(bytes calldata _packet) internal pure returns (uint8) {\n        return uint8(bytes1(_packet[PACKET_VERSION_OFFSET:NONCE_OFFSET]));\n    }\n\n    function nonce(bytes calldata _packet) internal pure returns (uint64) {\n        return uint64(bytes8(_packet[NONCE_OFFSET:SRC_EID_OFFSET]));\n    }\n\n    function srcEid(bytes calldata _packet) internal pure returns (uint32) {\n        return uint32(bytes4(_packet[SRC_EID_OFFSET:SENDER_OFFSET]));\n    }\n\n    function sender(bytes calldata _packet) internal pure returns (bytes32) {\n        return bytes32(_packet[SENDER_OFFSET:DST_EID_OFFSET]);\n    }\n\n    function senderAddressB20(bytes calldata _packet) internal pure returns (address) {\n        return sender(_packet).toAddress();\n    }\n\n    function dstEid(bytes calldata _packet) internal pure returns (uint32) {\n        return uint32(bytes4(_packet[DST_EID_OFFSET:RECEIVER_OFFSET]));\n    }\n\n    function receiver(bytes calldata _packet) internal pure returns (bytes32) {\n        return bytes32(_packet[RECEIVER_OFFSET:GUID_OFFSET]);\n    }\n\n    function receiverB20(bytes calldata _packet) internal pure returns (address) {\n        return receiver(_packet).toAddress();\n    }\n\n    function guid(bytes calldata _packet) internal pure returns (bytes32) {\n        return bytes32(_packet[GUID_OFFSET:MESSAGE_OFFSET]);\n    }\n\n    function message(bytes calldata _packet) internal pure returns (bytes calldata) {\n        return bytes(_packet[MESSAGE_OFFSET:]);\n    }\n\n    function payload(bytes calldata _packet) internal pure returns (bytes calldata) {\n        return bytes(_packet[GUID_OFFSET:]);\n    }\n\n    function payloadHash(bytes calldata _packet) internal pure returns (bytes32) {\n        return keccak256(payload(_packet));\n    }\n}\n"
      },
      "@openzeppelin/contracts/access/Ownable.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        _checkOwner();\n        _;\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if the sender is not the owner.\n     */\n    function _checkOwner() internal view virtual {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby disabling any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `to`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address to, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `from` to `to` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(address from, address to, uint256 amount) external returns (bool);\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n *\n * ==== Security Considerations\n *\n * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature\n * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be\n * considered as an intention to spend the allowance in any specific way. The second is that because permits have\n * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should\n * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be\n * generally recommended is:\n *\n * ```solidity\n * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {\n *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}\n *     doThing(..., value);\n * }\n *\n * function doThing(..., uint256 value) public {\n *     token.safeTransferFrom(msg.sender, address(this), value);\n *     ...\n * }\n * ```\n *\n * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of\n * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also\n * {SafeERC20-safeTransferFrom}).\n *\n * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so\n * contracts should have entry points that don't rely on permit.\n */\ninterface IERC20Permit {\n    /**\n     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,\n     * given ``owner``'s signed approval.\n     *\n     * IMPORTANT: The same issues {IERC20-approve} has related to transaction\n     * ordering also apply here.\n     *\n     * Emits an {Approval} event.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     * - `deadline` must be a timestamp in the future.\n     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`\n     * over the EIP712-formatted function arguments.\n     * - the signature must use ``owner``'s current nonce (see {nonces}).\n     *\n     * For more information on the signature format, see the\n     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP\n     * section].\n     *\n     * CAUTION: See Security Considerations above.\n     */\n    function permit(\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) external;\n\n    /**\n     * @dev Returns the current nonce for `owner`. This value must be\n     * included whenever a signature is generated for {permit}.\n     *\n     * Every successful call to {permit} increases ``owner``'s nonce by one. This\n     * prevents a signature from being used multiple times.\n     */\n    function nonces(address owner) external view returns (uint256);\n\n    /**\n     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.\n     */\n    // solhint-disable-next-line func-name-mixedcase\n    function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../extensions/IERC20Permit.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n    using Address for address;\n\n    /**\n     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeTransfer(IERC20 token, address to, uint256 value) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    /**\n     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the\n     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.\n     */\n    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n    }\n\n    /**\n     * @dev Deprecated. This function has issues similar to the ones found in\n     * {IERC20-approve}, and its usage is discouraged.\n     *\n     * Whenever possible, use {safeIncreaseAllowance} and\n     * {safeDecreaseAllowance} instead.\n     */\n    function safeApprove(IERC20 token, address spender, uint256 value) internal {\n        // safeApprove should only be called when setting an initial allowance,\n        // or when resetting it to zero. To increase and decrease it, use\n        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n        require(\n            (value == 0) || (token.allowance(address(this), spender) == 0),\n            \"SafeERC20: approve from non-zero to non-zero allowance\"\n        );\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n    }\n\n    /**\n     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n        uint256 oldAllowance = token.allowance(address(this), spender);\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));\n    }\n\n    /**\n     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));\n        }\n    }\n\n    /**\n     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval\n     * to be set to zero before setting it to a non-zero value, such as USDT.\n     */\n    function forceApprove(IERC20 token, address spender, uint256 value) internal {\n        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);\n\n        if (!_callOptionalReturnBool(token, approvalCall)) {\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));\n            _callOptionalReturn(token, approvalCall);\n        }\n    }\n\n    /**\n     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.\n     * Revert on invalid signature.\n     */\n    function safePermit(\n        IERC20Permit token,\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) internal {\n        uint256 nonceBefore = token.nonces(owner);\n        token.permit(owner, spender, value, deadline, v, r, s);\n        uint256 nonceAfter = token.nonces(owner);\n        require(nonceAfter == nonceBefore + 1, \"SafeERC20: permit did not succeed\");\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     */\n    function _callOptionalReturn(IERC20 token, bytes memory data) private {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that\n        // the target address contains contract code and also asserts for success in the low-level call.\n\n        bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n        require(returndata.length == 0 || abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     *\n     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.\n     */\n    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false\n        // and not revert is the subcall reverts.\n\n        (bool success, bytes memory returndata) = address(token).call(data);\n        return\n            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/Address.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     *\n     * Furthermore, `isContract` will also return true if the target contract within\n     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,\n     * which only has an effect at the end of a transaction.\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n     *\n     * _Available since v4.8._\n     */\n    function verifyCallResultFromTarget(\n        address target,\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        if (success) {\n            if (returndata.length == 0) {\n                // only check isContract if the call was successful and the return data is empty\n                // otherwise we already know that it was a contract\n                require(isContract(target), \"Address: call to non-contract\");\n            }\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    /**\n     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason or using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    function _revert(bytes memory returndata, string memory errorMessage) private pure {\n        // Look for revert reason and bubble it up if present\n        if (returndata.length > 0) {\n            // The easiest way to bubble the revert reason is using memory via assembly\n            /// @solidity memory-safe-assembly\n            assembly {\n                let returndata_size := mload(returndata)\n                revert(add(32, returndata), returndata_size)\n            }\n        } else {\n            revert(errorMessage);\n        }\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/Context.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n\n    function _contextSuffixLength() internal view virtual returns (uint256) {\n        return 0;\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
      },
      "@openzeppelin/contracts/utils/math/SafeCast.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol)\n// This file was procedurally generated from scripts/generate/templates/SafeCast.js.\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow\n * checks.\n *\n * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can\n * easily result in undesired exploitation or bugs, since developers usually\n * assume that overflows raise errors. `SafeCast` restores this intuition by\n * reverting the transaction when such an operation overflows.\n *\n * Using this library instead of the unchecked operations eliminates an entire\n * class of bugs, so it's recommended to use it always.\n *\n * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing\n * all math on `uint256` and `int256` and then downcasting.\n */\nlibrary SafeCast {\n    /**\n     * @dev Returns the downcasted uint248 from uint256, reverting on\n     * overflow (when the input is greater than largest uint248).\n     *\n     * Counterpart to Solidity's `uint248` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 248 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint248(uint256 value) internal pure returns (uint248) {\n        require(value <= type(uint248).max, \"SafeCast: value doesn't fit in 248 bits\");\n        return uint248(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint240 from uint256, reverting on\n     * overflow (when the input is greater than largest uint240).\n     *\n     * Counterpart to Solidity's `uint240` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 240 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint240(uint256 value) internal pure returns (uint240) {\n        require(value <= type(uint240).max, \"SafeCast: value doesn't fit in 240 bits\");\n        return uint240(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint232 from uint256, reverting on\n     * overflow (when the input is greater than largest uint232).\n     *\n     * Counterpart to Solidity's `uint232` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 232 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint232(uint256 value) internal pure returns (uint232) {\n        require(value <= type(uint232).max, \"SafeCast: value doesn't fit in 232 bits\");\n        return uint232(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint224 from uint256, reverting on\n     * overflow (when the input is greater than largest uint224).\n     *\n     * Counterpart to Solidity's `uint224` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 224 bits\n     *\n     * _Available since v4.2._\n     */\n    function toUint224(uint256 value) internal pure returns (uint224) {\n        require(value <= type(uint224).max, \"SafeCast: value doesn't fit in 224 bits\");\n        return uint224(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint216 from uint256, reverting on\n     * overflow (when the input is greater than largest uint216).\n     *\n     * Counterpart to Solidity's `uint216` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 216 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint216(uint256 value) internal pure returns (uint216) {\n        require(value <= type(uint216).max, \"SafeCast: value doesn't fit in 216 bits\");\n        return uint216(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint208 from uint256, reverting on\n     * overflow (when the input is greater than largest uint208).\n     *\n     * Counterpart to Solidity's `uint208` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 208 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint208(uint256 value) internal pure returns (uint208) {\n        require(value <= type(uint208).max, \"SafeCast: value doesn't fit in 208 bits\");\n        return uint208(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint200 from uint256, reverting on\n     * overflow (when the input is greater than largest uint200).\n     *\n     * Counterpart to Solidity's `uint200` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 200 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint200(uint256 value) internal pure returns (uint200) {\n        require(value <= type(uint200).max, \"SafeCast: value doesn't fit in 200 bits\");\n        return uint200(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint192 from uint256, reverting on\n     * overflow (when the input is greater than largest uint192).\n     *\n     * Counterpart to Solidity's `uint192` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 192 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint192(uint256 value) internal pure returns (uint192) {\n        require(value <= type(uint192).max, \"SafeCast: value doesn't fit in 192 bits\");\n        return uint192(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint184 from uint256, reverting on\n     * overflow (when the input is greater than largest uint184).\n     *\n     * Counterpart to Solidity's `uint184` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 184 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint184(uint256 value) internal pure returns (uint184) {\n        require(value <= type(uint184).max, \"SafeCast: value doesn't fit in 184 bits\");\n        return uint184(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint176 from uint256, reverting on\n     * overflow (when the input is greater than largest uint176).\n     *\n     * Counterpart to Solidity's `uint176` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 176 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint176(uint256 value) internal pure returns (uint176) {\n        require(value <= type(uint176).max, \"SafeCast: value doesn't fit in 176 bits\");\n        return uint176(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint168 from uint256, reverting on\n     * overflow (when the input is greater than largest uint168).\n     *\n     * Counterpart to Solidity's `uint168` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 168 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint168(uint256 value) internal pure returns (uint168) {\n        require(value <= type(uint168).max, \"SafeCast: value doesn't fit in 168 bits\");\n        return uint168(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint160 from uint256, reverting on\n     * overflow (when the input is greater than largest uint160).\n     *\n     * Counterpart to Solidity's `uint160` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 160 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint160(uint256 value) internal pure returns (uint160) {\n        require(value <= type(uint160).max, \"SafeCast: value doesn't fit in 160 bits\");\n        return uint160(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint152 from uint256, reverting on\n     * overflow (when the input is greater than largest uint152).\n     *\n     * Counterpart to Solidity's `uint152` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 152 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint152(uint256 value) internal pure returns (uint152) {\n        require(value <= type(uint152).max, \"SafeCast: value doesn't fit in 152 bits\");\n        return uint152(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint144 from uint256, reverting on\n     * overflow (when the input is greater than largest uint144).\n     *\n     * Counterpart to Solidity's `uint144` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 144 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint144(uint256 value) internal pure returns (uint144) {\n        require(value <= type(uint144).max, \"SafeCast: value doesn't fit in 144 bits\");\n        return uint144(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint136 from uint256, reverting on\n     * overflow (when the input is greater than largest uint136).\n     *\n     * Counterpart to Solidity's `uint136` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 136 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint136(uint256 value) internal pure returns (uint136) {\n        require(value <= type(uint136).max, \"SafeCast: value doesn't fit in 136 bits\");\n        return uint136(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint128 from uint256, reverting on\n     * overflow (when the input is greater than largest uint128).\n     *\n     * Counterpart to Solidity's `uint128` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 128 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint128(uint256 value) internal pure returns (uint128) {\n        require(value <= type(uint128).max, \"SafeCast: value doesn't fit in 128 bits\");\n        return uint128(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint120 from uint256, reverting on\n     * overflow (when the input is greater than largest uint120).\n     *\n     * Counterpart to Solidity's `uint120` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 120 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint120(uint256 value) internal pure returns (uint120) {\n        require(value <= type(uint120).max, \"SafeCast: value doesn't fit in 120 bits\");\n        return uint120(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint112 from uint256, reverting on\n     * overflow (when the input is greater than largest uint112).\n     *\n     * Counterpart to Solidity's `uint112` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 112 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint112(uint256 value) internal pure returns (uint112) {\n        require(value <= type(uint112).max, \"SafeCast: value doesn't fit in 112 bits\");\n        return uint112(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint104 from uint256, reverting on\n     * overflow (when the input is greater than largest uint104).\n     *\n     * Counterpart to Solidity's `uint104` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 104 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint104(uint256 value) internal pure returns (uint104) {\n        require(value <= type(uint104).max, \"SafeCast: value doesn't fit in 104 bits\");\n        return uint104(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint96 from uint256, reverting on\n     * overflow (when the input is greater than largest uint96).\n     *\n     * Counterpart to Solidity's `uint96` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 96 bits\n     *\n     * _Available since v4.2._\n     */\n    function toUint96(uint256 value) internal pure returns (uint96) {\n        require(value <= type(uint96).max, \"SafeCast: value doesn't fit in 96 bits\");\n        return uint96(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint88 from uint256, reverting on\n     * overflow (when the input is greater than largest uint88).\n     *\n     * Counterpart to Solidity's `uint88` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 88 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint88(uint256 value) internal pure returns (uint88) {\n        require(value <= type(uint88).max, \"SafeCast: value doesn't fit in 88 bits\");\n        return uint88(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint80 from uint256, reverting on\n     * overflow (when the input is greater than largest uint80).\n     *\n     * Counterpart to Solidity's `uint80` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 80 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint80(uint256 value) internal pure returns (uint80) {\n        require(value <= type(uint80).max, \"SafeCast: value doesn't fit in 80 bits\");\n        return uint80(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint72 from uint256, reverting on\n     * overflow (when the input is greater than largest uint72).\n     *\n     * Counterpart to Solidity's `uint72` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 72 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint72(uint256 value) internal pure returns (uint72) {\n        require(value <= type(uint72).max, \"SafeCast: value doesn't fit in 72 bits\");\n        return uint72(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint64 from uint256, reverting on\n     * overflow (when the input is greater than largest uint64).\n     *\n     * Counterpart to Solidity's `uint64` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 64 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint64(uint256 value) internal pure returns (uint64) {\n        require(value <= type(uint64).max, \"SafeCast: value doesn't fit in 64 bits\");\n        return uint64(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint56 from uint256, reverting on\n     * overflow (when the input is greater than largest uint56).\n     *\n     * Counterpart to Solidity's `uint56` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 56 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint56(uint256 value) internal pure returns (uint56) {\n        require(value <= type(uint56).max, \"SafeCast: value doesn't fit in 56 bits\");\n        return uint56(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint48 from uint256, reverting on\n     * overflow (when the input is greater than largest uint48).\n     *\n     * Counterpart to Solidity's `uint48` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 48 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint48(uint256 value) internal pure returns (uint48) {\n        require(value <= type(uint48).max, \"SafeCast: value doesn't fit in 48 bits\");\n        return uint48(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint40 from uint256, reverting on\n     * overflow (when the input is greater than largest uint40).\n     *\n     * Counterpart to Solidity's `uint40` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 40 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint40(uint256 value) internal pure returns (uint40) {\n        require(value <= type(uint40).max, \"SafeCast: value doesn't fit in 40 bits\");\n        return uint40(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint32 from uint256, reverting on\n     * overflow (when the input is greater than largest uint32).\n     *\n     * Counterpart to Solidity's `uint32` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 32 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint32(uint256 value) internal pure returns (uint32) {\n        require(value <= type(uint32).max, \"SafeCast: value doesn't fit in 32 bits\");\n        return uint32(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint24 from uint256, reverting on\n     * overflow (when the input is greater than largest uint24).\n     *\n     * Counterpart to Solidity's `uint24` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 24 bits\n     *\n     * _Available since v4.7._\n     */\n    function toUint24(uint256 value) internal pure returns (uint24) {\n        require(value <= type(uint24).max, \"SafeCast: value doesn't fit in 24 bits\");\n        return uint24(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint16 from uint256, reverting on\n     * overflow (when the input is greater than largest uint16).\n     *\n     * Counterpart to Solidity's `uint16` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 16 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint16(uint256 value) internal pure returns (uint16) {\n        require(value <= type(uint16).max, \"SafeCast: value doesn't fit in 16 bits\");\n        return uint16(value);\n    }\n\n    /**\n     * @dev Returns the downcasted uint8 from uint256, reverting on\n     * overflow (when the input is greater than largest uint8).\n     *\n     * Counterpart to Solidity's `uint8` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 8 bits\n     *\n     * _Available since v2.5._\n     */\n    function toUint8(uint256 value) internal pure returns (uint8) {\n        require(value <= type(uint8).max, \"SafeCast: value doesn't fit in 8 bits\");\n        return uint8(value);\n    }\n\n    /**\n     * @dev Converts a signed int256 into an unsigned uint256.\n     *\n     * Requirements:\n     *\n     * - input must be greater than or equal to 0.\n     *\n     * _Available since v3.0._\n     */\n    function toUint256(int256 value) internal pure returns (uint256) {\n        require(value >= 0, \"SafeCast: value must be positive\");\n        return uint256(value);\n    }\n\n    /**\n     * @dev Returns the downcasted int248 from int256, reverting on\n     * overflow (when the input is less than smallest int248 or\n     * greater than largest int248).\n     *\n     * Counterpart to Solidity's `int248` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 248 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt248(int256 value) internal pure returns (int248 downcasted) {\n        downcasted = int248(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 248 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int240 from int256, reverting on\n     * overflow (when the input is less than smallest int240 or\n     * greater than largest int240).\n     *\n     * Counterpart to Solidity's `int240` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 240 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt240(int256 value) internal pure returns (int240 downcasted) {\n        downcasted = int240(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 240 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int232 from int256, reverting on\n     * overflow (when the input is less than smallest int232 or\n     * greater than largest int232).\n     *\n     * Counterpart to Solidity's `int232` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 232 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt232(int256 value) internal pure returns (int232 downcasted) {\n        downcasted = int232(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 232 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int224 from int256, reverting on\n     * overflow (when the input is less than smallest int224 or\n     * greater than largest int224).\n     *\n     * Counterpart to Solidity's `int224` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 224 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt224(int256 value) internal pure returns (int224 downcasted) {\n        downcasted = int224(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 224 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int216 from int256, reverting on\n     * overflow (when the input is less than smallest int216 or\n     * greater than largest int216).\n     *\n     * Counterpart to Solidity's `int216` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 216 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt216(int256 value) internal pure returns (int216 downcasted) {\n        downcasted = int216(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 216 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int208 from int256, reverting on\n     * overflow (when the input is less than smallest int208 or\n     * greater than largest int208).\n     *\n     * Counterpart to Solidity's `int208` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 208 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt208(int256 value) internal pure returns (int208 downcasted) {\n        downcasted = int208(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 208 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int200 from int256, reverting on\n     * overflow (when the input is less than smallest int200 or\n     * greater than largest int200).\n     *\n     * Counterpart to Solidity's `int200` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 200 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt200(int256 value) internal pure returns (int200 downcasted) {\n        downcasted = int200(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 200 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int192 from int256, reverting on\n     * overflow (when the input is less than smallest int192 or\n     * greater than largest int192).\n     *\n     * Counterpart to Solidity's `int192` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 192 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt192(int256 value) internal pure returns (int192 downcasted) {\n        downcasted = int192(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 192 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int184 from int256, reverting on\n     * overflow (when the input is less than smallest int184 or\n     * greater than largest int184).\n     *\n     * Counterpart to Solidity's `int184` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 184 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt184(int256 value) internal pure returns (int184 downcasted) {\n        downcasted = int184(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 184 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int176 from int256, reverting on\n     * overflow (when the input is less than smallest int176 or\n     * greater than largest int176).\n     *\n     * Counterpart to Solidity's `int176` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 176 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt176(int256 value) internal pure returns (int176 downcasted) {\n        downcasted = int176(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 176 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int168 from int256, reverting on\n     * overflow (when the input is less than smallest int168 or\n     * greater than largest int168).\n     *\n     * Counterpart to Solidity's `int168` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 168 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt168(int256 value) internal pure returns (int168 downcasted) {\n        downcasted = int168(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 168 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int160 from int256, reverting on\n     * overflow (when the input is less than smallest int160 or\n     * greater than largest int160).\n     *\n     * Counterpart to Solidity's `int160` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 160 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt160(int256 value) internal pure returns (int160 downcasted) {\n        downcasted = int160(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 160 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int152 from int256, reverting on\n     * overflow (when the input is less than smallest int152 or\n     * greater than largest int152).\n     *\n     * Counterpart to Solidity's `int152` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 152 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt152(int256 value) internal pure returns (int152 downcasted) {\n        downcasted = int152(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 152 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int144 from int256, reverting on\n     * overflow (when the input is less than smallest int144 or\n     * greater than largest int144).\n     *\n     * Counterpart to Solidity's `int144` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 144 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt144(int256 value) internal pure returns (int144 downcasted) {\n        downcasted = int144(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 144 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int136 from int256, reverting on\n     * overflow (when the input is less than smallest int136 or\n     * greater than largest int136).\n     *\n     * Counterpart to Solidity's `int136` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 136 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt136(int256 value) internal pure returns (int136 downcasted) {\n        downcasted = int136(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 136 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int128 from int256, reverting on\n     * overflow (when the input is less than smallest int128 or\n     * greater than largest int128).\n     *\n     * Counterpart to Solidity's `int128` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 128 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt128(int256 value) internal pure returns (int128 downcasted) {\n        downcasted = int128(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 128 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int120 from int256, reverting on\n     * overflow (when the input is less than smallest int120 or\n     * greater than largest int120).\n     *\n     * Counterpart to Solidity's `int120` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 120 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt120(int256 value) internal pure returns (int120 downcasted) {\n        downcasted = int120(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 120 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int112 from int256, reverting on\n     * overflow (when the input is less than smallest int112 or\n     * greater than largest int112).\n     *\n     * Counterpart to Solidity's `int112` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 112 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt112(int256 value) internal pure returns (int112 downcasted) {\n        downcasted = int112(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 112 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int104 from int256, reverting on\n     * overflow (when the input is less than smallest int104 or\n     * greater than largest int104).\n     *\n     * Counterpart to Solidity's `int104` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 104 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt104(int256 value) internal pure returns (int104 downcasted) {\n        downcasted = int104(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 104 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int96 from int256, reverting on\n     * overflow (when the input is less than smallest int96 or\n     * greater than largest int96).\n     *\n     * Counterpart to Solidity's `int96` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 96 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt96(int256 value) internal pure returns (int96 downcasted) {\n        downcasted = int96(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 96 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int88 from int256, reverting on\n     * overflow (when the input is less than smallest int88 or\n     * greater than largest int88).\n     *\n     * Counterpart to Solidity's `int88` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 88 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt88(int256 value) internal pure returns (int88 downcasted) {\n        downcasted = int88(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 88 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int80 from int256, reverting on\n     * overflow (when the input is less than smallest int80 or\n     * greater than largest int80).\n     *\n     * Counterpart to Solidity's `int80` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 80 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt80(int256 value) internal pure returns (int80 downcasted) {\n        downcasted = int80(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 80 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int72 from int256, reverting on\n     * overflow (when the input is less than smallest int72 or\n     * greater than largest int72).\n     *\n     * Counterpart to Solidity's `int72` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 72 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt72(int256 value) internal pure returns (int72 downcasted) {\n        downcasted = int72(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 72 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int64 from int256, reverting on\n     * overflow (when the input is less than smallest int64 or\n     * greater than largest int64).\n     *\n     * Counterpart to Solidity's `int64` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 64 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt64(int256 value) internal pure returns (int64 downcasted) {\n        downcasted = int64(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 64 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int56 from int256, reverting on\n     * overflow (when the input is less than smallest int56 or\n     * greater than largest int56).\n     *\n     * Counterpart to Solidity's `int56` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 56 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt56(int256 value) internal pure returns (int56 downcasted) {\n        downcasted = int56(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 56 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int48 from int256, reverting on\n     * overflow (when the input is less than smallest int48 or\n     * greater than largest int48).\n     *\n     * Counterpart to Solidity's `int48` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 48 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt48(int256 value) internal pure returns (int48 downcasted) {\n        downcasted = int48(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 48 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int40 from int256, reverting on\n     * overflow (when the input is less than smallest int40 or\n     * greater than largest int40).\n     *\n     * Counterpart to Solidity's `int40` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 40 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt40(int256 value) internal pure returns (int40 downcasted) {\n        downcasted = int40(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 40 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int32 from int256, reverting on\n     * overflow (when the input is less than smallest int32 or\n     * greater than largest int32).\n     *\n     * Counterpart to Solidity's `int32` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 32 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt32(int256 value) internal pure returns (int32 downcasted) {\n        downcasted = int32(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 32 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int24 from int256, reverting on\n     * overflow (when the input is less than smallest int24 or\n     * greater than largest int24).\n     *\n     * Counterpart to Solidity's `int24` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 24 bits\n     *\n     * _Available since v4.7._\n     */\n    function toInt24(int256 value) internal pure returns (int24 downcasted) {\n        downcasted = int24(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 24 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int16 from int256, reverting on\n     * overflow (when the input is less than smallest int16 or\n     * greater than largest int16).\n     *\n     * Counterpart to Solidity's `int16` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 16 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt16(int256 value) internal pure returns (int16 downcasted) {\n        downcasted = int16(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 16 bits\");\n    }\n\n    /**\n     * @dev Returns the downcasted int8 from int256, reverting on\n     * overflow (when the input is less than smallest int8 or\n     * greater than largest int8).\n     *\n     * Counterpart to Solidity's `int8` operator.\n     *\n     * Requirements:\n     *\n     * - input must fit into 8 bits\n     *\n     * _Available since v3.1._\n     */\n    function toInt8(int256 value) internal pure returns (int8 downcasted) {\n        downcasted = int8(value);\n        require(downcasted == value, \"SafeCast: value doesn't fit in 8 bits\");\n    }\n\n    /**\n     * @dev Converts an unsigned uint256 into a signed int256.\n     *\n     * Requirements:\n     *\n     * - input must be less than or equal to maxInt256.\n     *\n     * _Available since v3.0._\n     */\n    function toInt256(uint256 value) internal pure returns (int256) {\n        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive\n        require(value <= uint256(type(int256).max), \"SafeCast: value doesn't fit in an int256\");\n        return int256(value);\n    }\n}\n"
      },
      "src/interfaces/ICreditMessaging.sol": {
        "content": "// SPDX-License-Identifier: BUSL-1.1\npragma solidity ^0.8.0;\n\nimport { MessagingFee } from \"@layerzerolabs/lz-evm-oapp-v2/contracts/oft/interfaces/IOFT.sol\";\n\n/// @notice Stores the information related to a batch of credit transfers.\nstruct TargetCreditBatch {\n    uint16 assetId;\n    TargetCredit[] credits;\n}\n\n/// @notice Stores the information related to a single credit transfer.\nstruct TargetCredit {\n    uint32 srcEid;\n    uint64 amount; // the amount of credits to intended to send\n    uint64 minAmount; // the minimum amount of credits to keep on local chain after sending\n}\n\n/// @title Credit Messaging API\n/// @dev This interface defines the API for quoting and sending credits to other chains.\ninterface ICreditMessaging {\n    /// @notice Sends credits to the destination endpoint.\n    /// @param _dstEid The destination LayerZero endpoint ID.\n    /// @param _creditBatches The credit batch payloads to send to the destination LayerZero endpoint ID.\n    function sendCredits(uint32 _dstEid, TargetCreditBatch[] calldata _creditBatches) external payable;\n\n    /// @notice Quotes the fee for sending credits to the destination endpoint.\n    /// @param _dstEid The destination LayerZero endpoint ID.\n    /// @param _creditBatches The credit batch payloads to send to the destination LayerZero endpoint ID.\n    /// @return fee The fee for sending the credits to the destination endpoint.\n    function quoteSendCredits(\n        uint32 _dstEid,\n        TargetCreditBatch[] calldata _creditBatches\n    ) external view returns (MessagingFee memory fee);\n}\n"
      },
      "src/interfaces/ICreditMessagingHandler.sol": {
        "content": "// SPDX-License-Identifier: BUSL-1.1\npragma solidity ^0.8.0;\n\nimport { TargetCredit } from \"./ICreditMessaging.sol\";\n\nstruct Credit {\n    uint32 srcEid;\n    uint64 amount;\n}\n\n/// @dev This is an internal interface, defining functions to handle messages/calls from the credit messaging contract.\ninterface ICreditMessagingHandler {\n    function sendCredits(uint32 _dstEid, TargetCredit[] calldata _credits) external returns (Credit[] memory);\n\n    function receiveCredits(uint32 _srcEid, Credit[] calldata _credits) external;\n}\n"
      },
      "src/libs/CreditMsgCodec.sol": {
        "content": "// SPDX-License-Identifier: BUSL-1.1\npragma solidity ^0.8.22;\n\nimport { SafeCast } from \"@openzeppelin/contracts/utils/math/SafeCast.sol\";\nimport { Buffer } from \"@ensdomains/buffer/contracts/Buffer.sol\";\n\nimport { Credit } from \"../interfaces/ICreditMessagingHandler.sol\";\n\nstruct CreditBatch {\n    uint16 assetId;\n    Credit[] credits;\n}\n\nlibrary CreditMsgCodec {\n    using Buffer for Buffer.buffer;\n    using SafeCast for uint256;\n\n    /// @dev The byte width of the amount field in the credit message.\n    uint8 internal constant AMOUNT_BYTE_WIDTH = 8;\n\n    /// @dev The byte width of the assetId field in the credit message.\n    uint8 internal constant ASSET_ID_BYTE_WIDTH = 2;\n\n    /// @dev The byte width of the srcEid field in the credit message.\n    uint8 internal constant EID_BYTE_WIDTH = 4;\n\n    /// @dev The byte width of the numBatches field in the credit message.\n    uint8 internal constant NUM_BATCHES_BYTE_WIDTH = 1;\n\n    /// @dev The byte width of the numCredits field in the credit batch.\n    uint8 internal constant NUM_CREDITS_BYTE_WIDTH = 1;\n\n    error CreditMsgCodec_InvalidMessage();\n\n    function encode(\n        CreditBatch[] memory _creditBatches,\n        uint256 _totalCreditNum\n    ) internal pure returns (bytes memory message) {\n        uint256 numBatches = _creditBatches.length;\n        // batchNum(1) + batchNum * (assetId(2) + batchSize(1)) + creditNum * (srcEid(4) + amount(8))\n        uint256 bufferSize = NUM_BATCHES_BYTE_WIDTH +\n            numBatches *\n            (NUM_CREDITS_BYTE_WIDTH + ASSET_ID_BYTE_WIDTH) +\n            _totalCreditNum *\n            (EID_BYTE_WIDTH + AMOUNT_BYTE_WIDTH);\n        Buffer.buffer memory buf;\n        buf.init(bufferSize);\n        buf.appendUint8(numBatches.toUint8());\n        for (uint256 i = 0; i < numBatches; i++) {\n            CreditBatch memory batch = _creditBatches[i];\n            buf.appendInt(batch.assetId, ASSET_ID_BYTE_WIDTH);\n            uint256 batchSize = batch.credits.length;\n            buf.appendUint8(batchSize.toUint8());\n            for (uint256 j = 0; j < batchSize; j++) {\n                Credit memory credit = batch.credits[j];\n                buf.appendInt(credit.srcEid, EID_BYTE_WIDTH);\n                buf.appendInt(credit.amount, AMOUNT_BYTE_WIDTH);\n            }\n        }\n        message = buf.buf;\n    }\n\n    function decode(bytes calldata _message) internal pure returns (CreditBatch[] memory creditBatches) {\n        uint8 batchNum = uint8(_message[0]);\n        creditBatches = new CreditBatch[](batchNum);\n        uint256 cursor = 1; // skip batchNum(1)\n        for (uint256 i = 0; i < batchNum; i++) {\n            uint16 assetId = uint16(bytes2(_message[cursor:cursor += ASSET_ID_BYTE_WIDTH]));\n            uint8 batchSize = uint8(_message[cursor]);\n            cursor += NUM_BATCHES_BYTE_WIDTH;\n            Credit[] memory credits = new Credit[](batchSize);\n            for (uint256 j = 0; j < batchSize; j++) {\n                uint32 srcEid = uint32(bytes4(_message[cursor:cursor += EID_BYTE_WIDTH]));\n                uint64 amount = uint64(bytes8(_message[cursor:cursor += AMOUNT_BYTE_WIDTH]));\n                credits[j] = Credit(srcEid, amount);\n            }\n            creditBatches[i] = CreditBatch(assetId, credits);\n        }\n        if (cursor != _message.length) revert CreditMsgCodec_InvalidMessage();\n    }\n}\n"
      },
      "src/messaging/CreditMessaging.sol": {
        "content": "// SPDX-License-Identifier: BUSL-1.1\npragma solidity ^0.8.22;\n\nimport { MessagingFee } from \"@layerzerolabs/lz-evm-oapp-v2/contracts/oft/interfaces/IOFT.sol\";\n\nimport { ICreditMessaging, TargetCreditBatch, TargetCredit } from \"../interfaces/ICreditMessaging.sol\";\nimport { ICreditMessagingHandler, Credit } from \"../interfaces/ICreditMessagingHandler.sol\";\nimport { CreditMsgCodec, CreditBatch } from \"../libs/CreditMsgCodec.sol\";\nimport { CreditMessagingOptions } from \"./CreditMessagingOptions.sol\";\nimport { MessagingBase, Origin } from \"./MessagingBase.sol\";\n\ncontract CreditMessaging is MessagingBase, CreditMessagingOptions, ICreditMessaging {\n    constructor(address _endpoint, address _owner) MessagingBase(_endpoint, _owner) {}\n\n    // ---------------------------------- Only Planner ------------------------------------------\n\n    function sendCredits(uint32 _dstEid, TargetCreditBatch[] calldata _creditBatches) external payable onlyPlanner {\n        CreditBatch[] memory batches = new CreditBatch[](_creditBatches.length);\n        uint256 index = 0;\n        uint128 totalCreditNum = 0; // total number of credits in all batches\n\n        for (uint256 i = 0; i < _creditBatches.length; i++) {\n            TargetCreditBatch calldata targetBatch = _creditBatches[i];\n            Credit[] memory actualCredits = ICreditMessagingHandler(_safeGetStargateImpl(targetBatch.assetId))\n                .sendCredits(_dstEid, targetBatch.credits);\n            if (actualCredits.length > 0) {\n                batches[index++] = CreditBatch(targetBatch.assetId, actualCredits);\n                totalCreditNum += uint128(actualCredits.length); // safe cast\n            }\n        }\n\n        if (index != 0) {\n            // resize the array to the actual number of batches\n            assembly {\n                mstore(batches, index)\n            }\n            bytes memory message = CreditMsgCodec.encode(batches, totalCreditNum);\n            bytes memory options = _buildOptions(_dstEid, totalCreditNum);\n            _lzSend(_dstEid, message, options, MessagingFee(msg.value, 0), msg.sender);\n        }\n    }\n\n    function quoteSendCredits(\n        uint32 _dstEid,\n        TargetCreditBatch[] calldata _creditBatches\n    ) external view returns (MessagingFee memory fee) {\n        CreditBatch[] memory creditBatches = new CreditBatch[](_creditBatches.length);\n        uint128 creditNum = 0; // used for message encoding\n        for (uint256 i = 0; i < _creditBatches.length; i++) {\n            TargetCredit[] calldata targetCredits = _creditBatches[i].credits;\n            Credit[] memory credits = new Credit[](targetCredits.length);\n            creditNum += uint128(targetCredits.length); // safe cast\n            for (uint256 j = 0; j < targetCredits.length; j++) {\n                credits[j] = Credit(targetCredits[j].srcEid, targetCredits[j].amount);\n            }\n            creditBatches[i] = CreditBatch(_creditBatches[i].assetId, credits);\n        }\n        bytes memory message = CreditMsgCodec.encode(creditBatches, creditNum);\n        bytes memory options = _buildOptions(_dstEid, creditNum);\n        fee = _quote(_dstEid, message, options, false);\n    }\n\n    // ---------------------------------- OApp Functions ------------------------------------------\n\n    function _lzReceive(\n        Origin calldata _origin,\n        bytes32 /*_guid*/,\n        bytes calldata _message,\n        address /*_executor*/,\n        bytes calldata /*_extraData*/\n    ) internal override {\n        CreditBatch[] memory creditBatches = CreditMsgCodec.decode(_message);\n        uint256 batchNum = creditBatches.length;\n        for (uint256 i = 0; i < batchNum; i++) {\n            CreditBatch memory creditBatch = creditBatches[i];\n            ICreditMessagingHandler(_safeGetStargateImpl(creditBatch.assetId)).receiveCredits(\n                _origin.srcEid,\n                creditBatch.credits\n            );\n        }\n    }\n}\n"
      },
      "src/messaging/CreditMessagingOptions.sol": {
        "content": "// SPDX-License-Identifier: BUSL-1.1\npragma solidity ^0.8.22;\n\nimport { OAppOptionsType3 } from \"@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/libs/OAppOptionsType3.sol\";\nimport { Buffer } from \"@ensdomains/buffer/contracts/Buffer.sol\";\n\n/// @title Credit Messaging implementation of OAppOptionsType3\n/// @notice This contract is used to build options for the CreditMessaging OApp.\nabstract contract CreditMessagingOptions is OAppOptionsType3 {\n    using Buffer for Buffer.buffer;\n\n    /// @dev CreditMessaging only has one type of message.\n    uint8 internal constant MSG_TYPE_CREDIT_MESSAGING = 3; // only one message type for credit messaging\n\n    uint8 internal constant EXECUTOR_WORKER_ID = 1;\n    uint8 internal constant OPTION_TYPE_LZRECEIVE = 1;\n    uint16 internal constant OPTION_LZRECEIVE_PARAMS_SIZE = 17; // type(1) + gas(16)\n\n    /// @dev The base gas limit for each endpoint.\n    mapping(uint32 eid => uint128 gasLimit) public gasLimits;\n\n    /// @notice Event emitted when the gas limit is set for a given endpoint.\n    /// @param eid The LayerZero endpoint ID.\n    /// @param gasLimit The base gas limit for the destination endpoint.\n    event GasLimitSet(uint32 eid, uint128 gasLimit);\n\n    /// @notice Error message for when the gas limit is not set for a given endpoint.\n    /// @dev Zero gas limit is considered not set.\n    error MessagingOptions_ZeroGasLimit();\n\n    /// @notice Sets the base gas limit for a specific endpoint.  Sending a LayerZero message takes some constant amount\n    /// of base gas regardless of the number of credits being sent in a particular message.  This function allows the\n    /// CreditMessaging OApp to set the base gas limit.\n    /// @param _eid The LayerZero endpoint ID.\n    /// @param _gasLimit The base gas limit for the destination endpoint.\n    function setGasLimit(uint32 _eid, uint128 _gasLimit) external onlyOwner {\n        gasLimits[_eid] = _gasLimit;\n        emit GasLimitSet(_eid, _gasLimit);\n    }\n\n    /// @notice Build the options for a credit messaging transaction.\n    /// @param _eid The LayerZero endpoint ID.\n    /// @param _totalCreditNum The total number of credits being sent in the message.\n    /// @return options The options for the message.\n    /// @dev The options are built by appending the lzReceive option to the enforced options for the given endpoint.\n    function _buildOptions(uint32 _eid, uint128 _totalCreditNum) internal view returns (bytes memory options) {\n        uint128 gasLimit = _safeGetGasLimit(_eid) * _totalCreditNum;\n        options = enforcedOptions[_eid][MSG_TYPE_CREDIT_MESSAGING];\n\n        // append lzReceive option\n        options = options.length == 0\n            ? abi.encodePacked(\n                OPTION_TYPE_3,\n                EXECUTOR_WORKER_ID,\n                OPTION_LZRECEIVE_PARAMS_SIZE,\n                OPTION_TYPE_LZRECEIVE,\n                gasLimit\n            )\n            : abi.encodePacked(\n                options,\n                EXECUTOR_WORKER_ID,\n                OPTION_LZRECEIVE_PARAMS_SIZE,\n                OPTION_TYPE_LZRECEIVE,\n                gasLimit\n            );\n    }\n\n    /// @notice Safely retrieves the base gas limit for a given endpoint.  The base gas limit is the constant amount of\n    /// gas required to send a message to the endpoint, regardless of the number of credits being sent.\n    /// @param _eid The LayerZero endpoint ID.\n    /// @return gasLimit The gas limit for the destination endpoint.\n    /// @dev If the gas limit is not set, this function will revert.\n    function _safeGetGasLimit(uint32 _eid) private view returns (uint128 gasLimit) {\n        gasLimit = gasLimits[_eid];\n        if (gasLimit == 0) revert MessagingOptions_ZeroGasLimit();\n    }\n}\n"
      },
      "src/messaging/MessagingBase.sol": {
        "content": "// SPDX-License-Identifier: BUSL-1.1\npragma solidity ^0.8.22;\n\nimport { OApp, Origin } from \"@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OApp.sol\";\nimport { OAppPreCrimeSimulator } from \"@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/OAppPreCrimeSimulator.sol\";\n\nabstract contract MessagingBase is OApp, OAppPreCrimeSimulator {\n    // max asset id, for the off-chain to get the range of asset id and get the list of stargate impls\n    uint16 public maxAssetId;\n    mapping(address stargateImpl => uint16 assetId) public assetIds;\n    mapping(uint16 assetId => address stargateImpl) public stargateImpls;\n\n    address public planner;\n\n    event AssetIdSet(address stargateImpl, uint16 assetId);\n    event MaxAssetIdSet(uint16 maxAssetId);\n    event PlannerSet(address planner);\n\n    error Messaging_Unauthorized();\n    error Messaging_Unavailable();\n    error Messaging_InvalidAssetId();\n\n    modifier onlyPlanner() {\n        if (msg.sender != planner) revert Messaging_Unauthorized();\n        _;\n    }\n\n    constructor(address _endpoint, address _owner) OApp(_endpoint, _owner) {}\n\n    // ---------------------------------- Only Owner ------------------------------------------\n\n    function setAssetId(address _stargateImpl, uint16 _assetId) external onlyOwner {\n        if (_assetId == 0) revert Messaging_InvalidAssetId();\n        if (_assetId > maxAssetId) {\n            maxAssetId = _assetId;\n            emit MaxAssetIdSet(_assetId);\n        }\n\n        // clean up the old stargate\n        uint16 oldAssetId = assetIds[_stargateImpl];\n        address oldStargateImpl = stargateImpls[_assetId];\n        if (oldAssetId != 0) delete stargateImpls[oldAssetId];\n        if (oldStargateImpl != address(0)) delete assetIds[oldStargateImpl];\n\n        // if stargateImpl is address(0) then delete stargateImpls[_assetId]\n        if (_stargateImpl == address(0)) {\n            delete stargateImpls[_assetId];\n        } else {\n            // set the new stargate\n            assetIds[_stargateImpl] = _assetId;\n            stargateImpls[_assetId] = _stargateImpl;\n        }\n        emit AssetIdSet(_stargateImpl, _assetId);\n    }\n\n    /// @dev Update the max asset id manually if it is not set correctly\n    function setMaxAssetId(uint16 _maxAssetId) external onlyOwner {\n        maxAssetId = _maxAssetId;\n        emit MaxAssetIdSet(_maxAssetId);\n    }\n\n    function setPlanner(address _planner) external onlyOwner {\n        planner = _planner;\n        emit PlannerSet(_planner);\n    }\n\n    // ---------------------------------- Internal Functions ------------------------------------------\n\n    function _safeGetStargateImpl(uint16 _assetId) internal view returns (address stargate) {\n        stargate = stargateImpls[_assetId];\n        if (stargate == address(0)) revert Messaging_Unavailable();\n    }\n\n    function _safeGetAssetId(address _stargateImpl) internal view returns (uint16 assetId) {\n        assetId = assetIds[_stargateImpl];\n        if (assetId == 0) revert Messaging_Unavailable();\n    }\n\n    /// @dev Lz token is payed in the stargate contract and do nothing here.\n    /// Function meant to be overridden\n    // solhint-disable-next-line no-empty-blocks\n    function _payLzToken(uint256 /*_lzTokenFee*/) internal pure override {}\n\n    // ---------------------------------- PreCrime Functions ------------------------------------------\n    function _lzReceiveSimulate(\n        Origin calldata _origin,\n        bytes32 _guid,\n        bytes calldata _message,\n        address _executor,\n        bytes calldata _extraData\n    ) internal override {\n        _lzReceive(_origin, _guid, _message, _executor, _extraData);\n    }\n\n    function isPeer(uint32 _eid, bytes32 _peer) public view override returns (bool) {\n        return _peer == peers[_eid];\n    }\n}\n"
      }
    }
  }}