{
    "Function": "_sendAndCallAck",
    "File": "contracts/OFT/OFTCoreV2.sol",
    "Parent Contracts": [
        "contracts/OFT/lzApp/NonblockingLzApp.sol",
        "contracts/OFT/lzApp/LzApp.sol",
        "contracts/OFT/interfaces/ILayerZeroUserApplicationConfig.sol",
        "contracts/OFT/interfaces/ILayerZeroReceiver.sol",
        "node_modules/@openzeppelin/contracts/access/Ownable.sol",
        "node_modules/@openzeppelin/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [
        "ExcessivelySafeCall"
    ],
    "Internal Calls": [
        "keccak256(bytes)",
        "_creditTo",
        "_decodeSendAndCallPayload",
        "_sd2ld",
        "gasleft()",
        "abi.encodeWithSelector()",
        "_isContract",
        "_storeFailedMessage",
        "gasleft()"
    ],
    "Library Calls": [
        "excessivelySafeCall"
    ],
    "Low-Level Calls": [],
    "Code": "function _sendAndCallAck(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual {\n        (bytes32 from, address to, uint64 amountSD, bytes memory payloadForCall, uint64 gasForCall) = _decodeSendAndCallPayload(_payload);\n\n        bool credited = creditedPackets[_srcChainId][_srcAddress][_nonce];\n        uint amount = _sd2ld(amountSD);\n\n        // credit to this contract first, and then transfer to receiver only if callOnOFTReceived() succeeds\n        if (!credited) {\n            amount = _creditTo(_srcChainId, address(this), amount);\n            creditedPackets[_srcChainId][_srcAddress][_nonce] = true;\n        }\n\n        if (!_isContract(to)) {\n            emit NonContractAddress(to);\n            return;\n        }\n\n        // workaround for stack too deep\n        uint16 srcChainId = _srcChainId;\n        bytes memory srcAddress = _srcAddress;\n        uint64 nonce = _nonce;\n        bytes memory payload = _payload;\n        bytes32 from_ = from;\n        address to_ = to;\n        uint amount_ = amount;\n        bytes memory payloadForCall_ = payloadForCall;\n\n        // no gas limit for the call if retry\n        uint gas = credited ? gasleft() : gasForCall;\n        (bool success, bytes memory reason) = address(this).excessivelySafeCall(gasleft(), 150, abi.encodeWithSelector(this.callOnOFTReceived.selector, srcChainId, srcAddress, nonce, from_, to_, amount_, payloadForCall_, gas));\n\n        if (success) {\n            bytes32 hash = keccak256(payload);\n            emit CallOFTReceivedSuccess(srcChainId, srcAddress, nonce, hash);\n        } else {\n            // store the failed message into the nonblockingLzApp\n            _storeFailedMessage(srcChainId, srcAddress, nonce, payload, reason);\n        }\n    }"
}