garnet/go/src/fidl/compiler/backend/goldens/empty_struct.test.json.llcpp.h.golden

// WARNING: This file is machine generated by fidlgen.

#pragma once

#include <lib/fidl/internal.h>
#include <lib/fidl/llcpp/array.h>
#include <lib/fidl/llcpp/buffer_allocator.h>
#include <lib/fidl/llcpp/buffer_then_heap_allocator.h>
#include <lib/fidl/llcpp/coding.h>
#include <lib/fidl/llcpp/envelope.h>
#include <lib/fidl/llcpp/errors.h>
#include <lib/fidl/llcpp/linearized_and_encoded.h>
#include <lib/fidl/llcpp/memory.h>
#include <lib/fidl/llcpp/message.h>
#include <lib/fidl/llcpp/string_view.h>
#include <lib/fidl/llcpp/tracking_ptr.h>
#include <lib/fidl/llcpp/traits.h>
#include <lib/fidl/llcpp/vector_view.h>
#include <lib/fit/function.h>
#include <lib/fit/optional.h>

#include <variant>
#ifdef __Fuchsia__
#include <lib/fidl/llcpp/client.h>
#include <lib/fidl/llcpp/connect_service.h>
#include <lib/fidl/llcpp/result.h>
#include <lib/fidl/llcpp/server.h>
#include <lib/fidl/llcpp/service_handler_interface.h>
#include <lib/fidl/llcpp/sync_call.h>
#include <lib/fidl/llcpp/transaction.h>
#include <lib/fidl/txn_header.h>
#include <lib/zx/channel.h>
#endif  // __Fuchsia__
#include <zircon/fidl.h>

namespace llcpp {

namespace fidl {
namespace test {
namespace json {

struct Empty;
class EmptyProtocol;

extern "C" const fidl_type_t fidl_test_json_EmptyTable;

struct Empty {
  static constexpr const fidl_type_t* Type = &fidl_test_json_EmptyTable;
  static constexpr uint32_t MaxNumHandles = 0;
  static constexpr uint32_t PrimarySize = 1;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 0;
  static constexpr bool HasPointer = false;
  static constexpr bool IsResource = false;

  uint8_t __reserved = {};
  void _CloseHandles();

  class UnownedOutgoingMessage final {
   public:
    UnownedOutgoingMessage(uint8_t* bytes, uint32_t byte_size, Empty* value)
        : message_(bytes, byte_size, sizeof(Empty), nullptr, 0, 0) {
      message_.LinearizeAndEncode<Empty>(value);
    }
    UnownedOutgoingMessage(const UnownedOutgoingMessage&) = delete;
    UnownedOutgoingMessage(UnownedOutgoingMessage&&) = delete;
    UnownedOutgoingMessage* operator=(const UnownedOutgoingMessage&) = delete;
    UnownedOutgoingMessage* operator=(UnownedOutgoingMessage&&) = delete;

    zx_status_t status() const { return message_.status(); }
    bool ok() const { return message_.status() == ZX_OK; }
    const char* error() const { return message_.error(); }

    ::fidl::OutgoingMessage& GetOutgoingMessage() { return message_; }

   private:
    ::fidl::OutgoingMessage message_;
  };

  class OwnedOutgoingMessage final {
   public:
    explicit OwnedOutgoingMessage(Empty* value)
        : message_(bytes_, sizeof(bytes_), value) {}
    OwnedOutgoingMessage(const OwnedOutgoingMessage&) = delete;
    OwnedOutgoingMessage(OwnedOutgoingMessage&&) = delete;
    OwnedOutgoingMessage* operator=(const OwnedOutgoingMessage&) = delete;
    OwnedOutgoingMessage* operator=(OwnedOutgoingMessage&&) = delete;

    zx_status_t status() const { return message_.status(); }
    bool ok() const { return message_.ok(); }
    const char* error() const { return message_.error(); }

    ::fidl::OutgoingMessage& GetOutgoingMessage() {
      return message_.GetOutgoingMessage();
    }

   private:
    FIDL_ALIGNDECL
    uint8_t bytes_[PrimarySize + MaxOutOfLine];
    UnownedOutgoingMessage message_;
  };

  class IncomingMessage final : public ::fidl::internal::IncomingMessage {
   public:
    IncomingMessage(const IncomingMessage&) = delete;
    IncomingMessage(IncomingMessage&&) = delete;
    IncomingMessage* operator=(const IncomingMessage&) = delete;
    IncomingMessage* operator=(IncomingMessage&&) = delete;

    struct Empty* PrimaryObject() {
      ZX_DEBUG_ASSERT(ok());
      return reinterpret_cast<struct Empty*>(bytes());
    }

    // These methods should only be used for testing purpose.
    // They create an IncomingMessage using the bytes of an outgoing message and
    // copying the handles.
    static IncomingMessage FromOutgoingWithRawHandleCopy(
        UnownedOutgoingMessage* outgoing_message) {
      return IncomingMessage(outgoing_message->GetOutgoingMessage());
    }
    static IncomingMessage FromOutgoingWithRawHandleCopy(
        OwnedOutgoingMessage* outgoing_message) {
      return IncomingMessage(outgoing_message->GetOutgoingMessage());
    }

   private:
    IncomingMessage(::fidl::OutgoingMessage& outgoing_message) {
      Init(outgoing_message, nullptr, 0);
      if (ok()) {
        Decode<struct Empty>();
      }
    }
  };
};

extern "C" const fidl_type_t fidl_test_json_EmptyProtocolSendRequestTable;
extern "C" const fidl_type_t fidl_test_json_EmptyProtocolSendResponseTable;
extern "C" const fidl_type_t fidl_test_json_EmptyProtocolReceiveRequestTable;
extern "C" const fidl_type_t fidl_test_json_EmptyProtocolReceiveEventTable;
extern "C" const fidl_type_t
    fidl_test_json_EmptyProtocolSendAndReceiveRequestTable;
extern "C" const fidl_type_t
    fidl_test_json_EmptyProtocolSendAndReceiveResponseTable;

class EmptyProtocol final {
  EmptyProtocol() = delete;

 public:
  struct SendRequest final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    ::llcpp::fidl::test::json::Empty e;
    explicit SendRequest(zx_txid_t _txid, ::llcpp::fidl::test::json::Empty& e)
        : e(std::move(e)) {
      _InitHeader(_txid);
    }
    explicit SendRequest(zx_txid_t _txid) { _InitHeader(_txid); }

    static constexpr const fidl_type_t* Type =
        &fidl_test_json_EmptyProtocolSendRequestTable;
    static constexpr uint32_t MaxNumHandles = 0;
    static constexpr uint32_t PrimarySize = 24;
    static constexpr uint32_t MaxOutOfLine = 0;
    static constexpr uint32_t AltPrimarySize = 24;
    static constexpr uint32_t AltMaxOutOfLine = 0;
    static constexpr bool HasFlexibleEnvelope = false;
    static constexpr bool HasPointer = false;
    static constexpr bool IsResource = false;
    static constexpr ::fidl::internal::TransactionalMessageKind MessageKind =
        ::fidl::internal::TransactionalMessageKind::kRequest;

    class UnownedOutgoingMessage final {
     public:
      UnownedOutgoingMessage(uint8_t* _bytes, uint32_t _byte_size,
                             zx_txid_t _txid,
                             ::llcpp::fidl::test::json::Empty& e)
          : message_(_bytes, _byte_size, sizeof(SendRequest), nullptr, 0, 0) {
        // Destructors can't be called because it will lead to handle double
        // close (here and in fidl::Encode).
        FIDL_ALIGNDECL uint8_t _request_buffer[sizeof(SendRequest)];
        auto& _request = *new (_request_buffer) SendRequest(_txid, e);
        message_.LinearizeAndEncode<SendRequest>(&_request);
      }
      UnownedOutgoingMessage(uint8_t* bytes, uint32_t byte_size,
                             SendRequest* request)
          : message_(bytes, byte_size, sizeof(SendRequest), nullptr, 0, 0) {
        message_.LinearizeAndEncode<SendRequest>(request);
      }
      UnownedOutgoingMessage(const UnownedOutgoingMessage&) = delete;
      UnownedOutgoingMessage(UnownedOutgoingMessage&&) = delete;
      UnownedOutgoingMessage* operator=(const UnownedOutgoingMessage&) = delete;
      UnownedOutgoingMessage* operator=(UnownedOutgoingMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
      bool ok() const { return message_.status() == ZX_OK; }
      const char* error() const { return message_.error(); }

      ::fidl::OutgoingMessage& GetOutgoingMessage() { return message_; }

      void Write(zx_handle_t client) { message_.Write(client); }

     private:
      SendRequest& Message() {
        return *reinterpret_cast<SendRequest*>(message_.bytes());
      }
      ::fidl::OutgoingMessage message_;
    };

    class OwnedOutgoingMessage final {
     public:
      explicit OwnedOutgoingMessage(zx_txid_t _txid,
                                    ::llcpp::fidl::test::json::Empty& e)
          : message_(bytes_, sizeof(bytes_), _txid, e) {}
      explicit OwnedOutgoingMessage(SendRequest* request)
          : message_(bytes_, sizeof(bytes_), request) {}
      OwnedOutgoingMessage(const OwnedOutgoingMessage&) = delete;
      OwnedOutgoingMessage(OwnedOutgoingMessage&&) = delete;
      OwnedOutgoingMessage* operator=(const OwnedOutgoingMessage&) = delete;
      OwnedOutgoingMessage* operator=(OwnedOutgoingMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
      bool ok() const { return message_.ok(); }
      const char* error() const { return message_.error(); }

      ::fidl::OutgoingMessage& GetOutgoingMessage() {
        return message_.GetOutgoingMessage();
      }

      void Write(zx_handle_t client) { message_.Write(client); }

     private:
      FIDL_ALIGNDECL
      uint8_t bytes_[PrimarySize + MaxOutOfLine];
      UnownedOutgoingMessage message_;
    };

    class IncomingMessage final : public ::fidl::internal::IncomingMessage {
     public:
      IncomingMessage(const IncomingMessage&) = delete;
      IncomingMessage(IncomingMessage&&) = delete;
      IncomingMessage* operator=(const IncomingMessage&) = delete;
      IncomingMessage* operator=(IncomingMessage&&) = delete;

      SendRequest* PrimaryObject() {
        ZX_DEBUG_ASSERT(ok());
        return reinterpret_cast<SendRequest*>(bytes());
      }

      // These methods should only be used for testing purpose.
      // They create an IncomingMessage using the bytes of an outgoing message
      // and copying the handles.
      static IncomingMessage FromOutgoingWithRawHandleCopy(
          UnownedOutgoingMessage* outgoing_message) {
        return IncomingMessage(outgoing_message->GetOutgoingMessage());
      }
      static IncomingMessage FromOutgoingWithRawHandleCopy(
          OwnedOutgoingMessage* outgoing_message) {
        return IncomingMessage(outgoing_message->GetOutgoingMessage());
      }

     private:
      IncomingMessage(::fidl::OutgoingMessage& outgoing_message) {
        Init(outgoing_message, nullptr, 0);
        if (ok()) {
          Decode<SendRequest>();
        }
      }
    };

   private:
    void _InitHeader(zx_txid_t _txid);
  };

  struct ReceiveResponse final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    ::llcpp::fidl::test::json::Empty e;
    explicit ReceiveResponse(::llcpp::fidl::test::json::Empty& e)
        : e(std::move(e)) {
      _InitHeader();
    }
    ReceiveResponse() { _InitHeader(); }

    static constexpr const fidl_type_t* Type =
        &fidl_test_json_EmptyProtocolReceiveEventTable;
    static constexpr uint32_t MaxNumHandles = 0;
    static constexpr uint32_t PrimarySize = 24;
    static constexpr uint32_t MaxOutOfLine = 0;
    static constexpr bool HasFlexibleEnvelope = false;
    static constexpr bool HasPointer = false;
    static constexpr bool IsResource = false;
    static constexpr ::fidl::internal::TransactionalMessageKind MessageKind =
        ::fidl::internal::TransactionalMessageKind::kResponse;

    class UnownedOutgoingMessage final {
     public:
      UnownedOutgoingMessage(uint8_t* _bytes, uint32_t _byte_size,
                             ::llcpp::fidl::test::json::Empty& e)
          : message_(_bytes, _byte_size, sizeof(ReceiveResponse), nullptr, 0,
                     0) {
        // Destructors can't be called because it will lead to handle double
        // close (here and in fidl::Encode).
        FIDL_ALIGNDECL uint8_t _response_buffer[sizeof(ReceiveResponse)];
        auto& _response = *new (_response_buffer) ReceiveResponse(e);
        message_.LinearizeAndEncode<ReceiveResponse>(&_response);
      }
      UnownedOutgoingMessage(uint8_t* bytes, uint32_t byte_size,
                             ReceiveResponse* response)
          : message_(bytes, byte_size, sizeof(ReceiveResponse), nullptr, 0, 0) {
        message_.LinearizeAndEncode<ReceiveResponse>(response);
      }
      UnownedOutgoingMessage(const UnownedOutgoingMessage&) = delete;
      UnownedOutgoingMessage(UnownedOutgoingMessage&&) = delete;
      UnownedOutgoingMessage* operator=(const UnownedOutgoingMessage&) = delete;
      UnownedOutgoingMessage* operator=(UnownedOutgoingMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
      bool ok() const { return message_.status() == ZX_OK; }
      const char* error() const { return message_.error(); }

      ::fidl::OutgoingMessage& GetOutgoingMessage() { return message_; }

      void Write(zx_handle_t client) { message_.Write(client); }

     private:
      ReceiveResponse& Message() {
        return *reinterpret_cast<ReceiveResponse*>(message_.bytes());
      }
      ::fidl::OutgoingMessage message_;
    };

    class OwnedOutgoingMessage final {
     public:
      explicit OwnedOutgoingMessage(::llcpp::fidl::test::json::Empty& e)
          : message_(bytes_, sizeof(bytes_), e) {}
      explicit OwnedOutgoingMessage(ReceiveResponse* response)
          : message_(bytes_, sizeof(bytes_), response) {}
      OwnedOutgoingMessage(const OwnedOutgoingMessage&) = delete;
      OwnedOutgoingMessage(OwnedOutgoingMessage&&) = delete;
      OwnedOutgoingMessage* operator=(const OwnedOutgoingMessage&) = delete;
      OwnedOutgoingMessage* operator=(OwnedOutgoingMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
      bool ok() const { return message_.ok(); }
      const char* error() const { return message_.error(); }

      ::fidl::OutgoingMessage& GetOutgoingMessage() {
        return message_.GetOutgoingMessage();
      }

      void Write(zx_handle_t client) { message_.Write(client); }

     private:
      FIDL_ALIGNDECL
      uint8_t bytes_[PrimarySize + MaxOutOfLine];
      UnownedOutgoingMessage message_;
    };

    class IncomingMessage final : public ::fidl::internal::IncomingMessage {
     public:
      IncomingMessage(const IncomingMessage&) = delete;
      IncomingMessage(IncomingMessage&&) = delete;
      IncomingMessage* operator=(const IncomingMessage&) = delete;
      IncomingMessage* operator=(IncomingMessage&&) = delete;

      ReceiveResponse* PrimaryObject() {
        ZX_DEBUG_ASSERT(ok());
        return reinterpret_cast<ReceiveResponse*>(bytes());
      }

      // These methods should only be used for testing purpose.
      // They create an IncomingMessage using the bytes of an outgoing message
      // and copying the handles.
      static IncomingMessage FromOutgoingWithRawHandleCopy(
          UnownedOutgoingMessage* outgoing_message) {
        return IncomingMessage(outgoing_message->GetOutgoingMessage());
      }
      static IncomingMessage FromOutgoingWithRawHandleCopy(
          OwnedOutgoingMessage* outgoing_message) {
        return IncomingMessage(outgoing_message->GetOutgoingMessage());
      }

     private:
      IncomingMessage(::fidl::OutgoingMessage& outgoing_message) {
        Init(outgoing_message, nullptr, 0);
        if (ok()) {
          Decode<ReceiveResponse>();
        }
      }
    };

   private:
    void _InitHeader();
  };
  struct SendAndReceiveResponse final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    ::llcpp::fidl::test::json::Empty e;
    explicit SendAndReceiveResponse(::llcpp::fidl::test::json::Empty& e)
        : e(std::move(e)) {
      _InitHeader();
    }
    SendAndReceiveResponse() { _InitHeader(); }

    static constexpr const fidl_type_t* Type =
        &fidl_test_json_EmptyProtocolSendAndReceiveResponseTable;
    static constexpr uint32_t MaxNumHandles = 0;
    static constexpr uint32_t PrimarySize = 24;
    static constexpr uint32_t MaxOutOfLine = 0;
    static constexpr bool HasFlexibleEnvelope = false;
    static constexpr bool HasPointer = false;
    static constexpr bool IsResource = false;
    static constexpr ::fidl::internal::TransactionalMessageKind MessageKind =
        ::fidl::internal::TransactionalMessageKind::kResponse;

    class UnownedOutgoingMessage final {
     public:
      UnownedOutgoingMessage(uint8_t* _bytes, uint32_t _byte_size,
                             ::llcpp::fidl::test::json::Empty& e)
          : message_(_bytes, _byte_size, sizeof(SendAndReceiveResponse),
                     nullptr, 0, 0) {
        // Destructors can't be called because it will lead to handle double
        // close (here and in fidl::Encode).
        FIDL_ALIGNDECL uint8_t _response_buffer[sizeof(SendAndReceiveResponse)];
        auto& _response = *new (_response_buffer) SendAndReceiveResponse(e);
        message_.LinearizeAndEncode<SendAndReceiveResponse>(&_response);
      }
      UnownedOutgoingMessage(uint8_t* bytes, uint32_t byte_size,
                             SendAndReceiveResponse* response)
          : message_(bytes, byte_size, sizeof(SendAndReceiveResponse), nullptr,
                     0, 0) {
        message_.LinearizeAndEncode<SendAndReceiveResponse>(response);
      }
      UnownedOutgoingMessage(const UnownedOutgoingMessage&) = delete;
      UnownedOutgoingMessage(UnownedOutgoingMessage&&) = delete;
      UnownedOutgoingMessage* operator=(const UnownedOutgoingMessage&) = delete;
      UnownedOutgoingMessage* operator=(UnownedOutgoingMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
      bool ok() const { return message_.status() == ZX_OK; }
      const char* error() const { return message_.error(); }

      ::fidl::OutgoingMessage& GetOutgoingMessage() { return message_; }

      void Write(zx_handle_t client) { message_.Write(client); }

     private:
      SendAndReceiveResponse& Message() {
        return *reinterpret_cast<SendAndReceiveResponse*>(message_.bytes());
      }
      ::fidl::OutgoingMessage message_;
    };

    class OwnedOutgoingMessage final {
     public:
      explicit OwnedOutgoingMessage(::llcpp::fidl::test::json::Empty& e)
          : message_(bytes_, sizeof(bytes_), e) {}
      explicit OwnedOutgoingMessage(SendAndReceiveResponse* response)
          : message_(bytes_, sizeof(bytes_), response) {}
      OwnedOutgoingMessage(const OwnedOutgoingMessage&) = delete;
      OwnedOutgoingMessage(OwnedOutgoingMessage&&) = delete;
      OwnedOutgoingMessage* operator=(const OwnedOutgoingMessage&) = delete;
      OwnedOutgoingMessage* operator=(OwnedOutgoingMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
      bool ok() const { return message_.ok(); }
      const char* error() const { return message_.error(); }

      ::fidl::OutgoingMessage& GetOutgoingMessage() {
        return message_.GetOutgoingMessage();
      }

      void Write(zx_handle_t client) { message_.Write(client); }

     private:
      FIDL_ALIGNDECL
      uint8_t bytes_[PrimarySize + MaxOutOfLine];
      UnownedOutgoingMessage message_;
    };

    class IncomingMessage final : public ::fidl::internal::IncomingMessage {
     public:
      IncomingMessage(const IncomingMessage&) = delete;
      IncomingMessage(IncomingMessage&&) = delete;
      IncomingMessage* operator=(const IncomingMessage&) = delete;
      IncomingMessage* operator=(IncomingMessage&&) = delete;

      SendAndReceiveResponse* PrimaryObject() {
        ZX_DEBUG_ASSERT(ok());
        return reinterpret_cast<SendAndReceiveResponse*>(bytes());
      }

      // These methods should only be used for testing purpose.
      // They create an IncomingMessage using the bytes of an outgoing message
      // and copying the handles.
      static IncomingMessage FromOutgoingWithRawHandleCopy(
          UnownedOutgoingMessage* outgoing_message) {
        return IncomingMessage(outgoing_message->GetOutgoingMessage());
      }
      static IncomingMessage FromOutgoingWithRawHandleCopy(
          OwnedOutgoingMessage* outgoing_message) {
        return IncomingMessage(outgoing_message->GetOutgoingMessage());
      }

     private:
      IncomingMessage(::fidl::OutgoingMessage& outgoing_message) {
        Init(outgoing_message, nullptr, 0);
        if (ok()) {
          Decode<SendAndReceiveResponse>();
        }
      }
    };

   private:
    void _InitHeader();
  };
  struct SendAndReceiveRequest final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    ::llcpp::fidl::test::json::Empty e;
    explicit SendAndReceiveRequest(zx_txid_t _txid,
                                   ::llcpp::fidl::test::json::Empty& e)
        : e(std::move(e)) {
      _InitHeader(_txid);
    }
    explicit SendAndReceiveRequest(zx_txid_t _txid) { _InitHeader(_txid); }

    static constexpr const fidl_type_t* Type =
        &fidl_test_json_EmptyProtocolSendAndReceiveRequestTable;
    static constexpr uint32_t MaxNumHandles = 0;
    static constexpr uint32_t PrimarySize = 24;
    static constexpr uint32_t MaxOutOfLine = 0;
    static constexpr uint32_t AltPrimarySize = 24;
    static constexpr uint32_t AltMaxOutOfLine = 0;
    static constexpr bool HasFlexibleEnvelope = false;
    static constexpr bool HasPointer = false;
    static constexpr bool IsResource = false;
    static constexpr ::fidl::internal::TransactionalMessageKind MessageKind =
        ::fidl::internal::TransactionalMessageKind::kRequest;
    using ResponseType = SendAndReceiveResponse;

    class UnownedOutgoingMessage final {
     public:
      UnownedOutgoingMessage(uint8_t* _bytes, uint32_t _byte_size,
                             zx_txid_t _txid,
                             ::llcpp::fidl::test::json::Empty& e)
          : message_(_bytes, _byte_size, sizeof(SendAndReceiveRequest), nullptr,
                     0, 0) {
        // Destructors can't be called because it will lead to handle double
        // close (here and in fidl::Encode).
        FIDL_ALIGNDECL uint8_t _request_buffer[sizeof(SendAndReceiveRequest)];
        auto& _request = *new (_request_buffer) SendAndReceiveRequest(_txid, e);
        message_.LinearizeAndEncode<SendAndReceiveRequest>(&_request);
      }
      UnownedOutgoingMessage(uint8_t* bytes, uint32_t byte_size,
                             SendAndReceiveRequest* request)
          : message_(bytes, byte_size, sizeof(SendAndReceiveRequest), nullptr,
                     0, 0) {
        message_.LinearizeAndEncode<SendAndReceiveRequest>(request);
      }
      UnownedOutgoingMessage(const UnownedOutgoingMessage&) = delete;
      UnownedOutgoingMessage(UnownedOutgoingMessage&&) = delete;
      UnownedOutgoingMessage* operator=(const UnownedOutgoingMessage&) = delete;
      UnownedOutgoingMessage* operator=(UnownedOutgoingMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
      bool ok() const { return message_.status() == ZX_OK; }
      const char* error() const { return message_.error(); }

      ::fidl::OutgoingMessage& GetOutgoingMessage() { return message_; }

      void Write(zx_handle_t client) { message_.Write(client); }

     private:
      SendAndReceiveRequest& Message() {
        return *reinterpret_cast<SendAndReceiveRequest*>(message_.bytes());
      }
      ::fidl::OutgoingMessage message_;
    };

    class OwnedOutgoingMessage final {
     public:
      explicit OwnedOutgoingMessage(zx_txid_t _txid,
                                    ::llcpp::fidl::test::json::Empty& e)
          : message_(bytes_, sizeof(bytes_), _txid, e) {}
      explicit OwnedOutgoingMessage(SendAndReceiveRequest* request)
          : message_(bytes_, sizeof(bytes_), request) {}
      OwnedOutgoingMessage(const OwnedOutgoingMessage&) = delete;
      OwnedOutgoingMessage(OwnedOutgoingMessage&&) = delete;
      OwnedOutgoingMessage* operator=(const OwnedOutgoingMessage&) = delete;
      OwnedOutgoingMessage* operator=(OwnedOutgoingMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
      bool ok() const { return message_.ok(); }
      const char* error() const { return message_.error(); }

      ::fidl::OutgoingMessage& GetOutgoingMessage() {
        return message_.GetOutgoingMessage();
      }

      void Write(zx_handle_t client) { message_.Write(client); }

     private:
      FIDL_ALIGNDECL
      uint8_t bytes_[PrimarySize + MaxOutOfLine];
      UnownedOutgoingMessage message_;
    };

    class IncomingMessage final : public ::fidl::internal::IncomingMessage {
     public:
      IncomingMessage(const IncomingMessage&) = delete;
      IncomingMessage(IncomingMessage&&) = delete;
      IncomingMessage* operator=(const IncomingMessage&) = delete;
      IncomingMessage* operator=(IncomingMessage&&) = delete;

      SendAndReceiveRequest* PrimaryObject() {
        ZX_DEBUG_ASSERT(ok());
        return reinterpret_cast<SendAndReceiveRequest*>(bytes());
      }

      // These methods should only be used for testing purpose.
      // They create an IncomingMessage using the bytes of an outgoing message
      // and copying the handles.
      static IncomingMessage FromOutgoingWithRawHandleCopy(
          UnownedOutgoingMessage* outgoing_message) {
        return IncomingMessage(outgoing_message->GetOutgoingMessage());
      }
      static IncomingMessage FromOutgoingWithRawHandleCopy(
          OwnedOutgoingMessage* outgoing_message) {
        return IncomingMessage(outgoing_message->GetOutgoingMessage());
      }

     private:
      IncomingMessage(::fidl::OutgoingMessage& outgoing_message) {
        Init(outgoing_message, nullptr, 0);
        if (ok()) {
          Decode<SendAndReceiveRequest>();
        }
      }
    };

   private:
    void _InitHeader(zx_txid_t _txid);
  };

  struct EventHandlers {
    fit::function<zx_status_t(ReceiveResponse* message)> receive;

    // Fallback handler when an unknown ordinal is received.
    // Caller may put custom error handling logic here.
    fit::function<zx_status_t()> unknown;
  };

  // Collection of return types of FIDL calls in this protocol.
  class ResultOf final {
    ResultOf() = delete;

   public:
    class Send final : public ::fidl::Result {
     public:
      explicit Send(zx_handle_t _client, ::llcpp::fidl::test::json::Empty& e);
      explicit Send(const ::fidl::Result& result) : ::fidl::Result(result) {}
      Send(Send&&) = delete;
      Send(const Send&) = delete;
      Send* operator=(Send&&) = delete;
      Send* operator=(const Send&) = delete;
      ~Send() = default;

     private:
    };
    class SendAndReceive final : public ::fidl::Result {
     public:
      explicit SendAndReceive(zx_handle_t _client,
                              ::llcpp::fidl::test::json::Empty& e);
      SendAndReceive(zx_handle_t _client, ::llcpp::fidl::test::json::Empty& e,
                     zx_time_t _deadline);
      explicit SendAndReceive(const ::fidl::Result& result)
          : ::fidl::Result(result) {}
      SendAndReceive(SendAndReceive&&) = delete;
      SendAndReceive(const SendAndReceive&) = delete;
      SendAndReceive* operator=(SendAndReceive&&) = delete;
      SendAndReceive* operator=(const SendAndReceive&) = delete;
      ~SendAndReceive() = default;

      SendAndReceiveResponse* Unwrap() {
        ZX_DEBUG_ASSERT(ok());
        return reinterpret_cast<SendAndReceiveResponse*>(bytes_);
      }
      const SendAndReceiveResponse* Unwrap() const {
        ZX_DEBUG_ASSERT(ok());
        return reinterpret_cast<const SendAndReceiveResponse*>(bytes_);
      }

      SendAndReceiveResponse& value() { return *Unwrap(); }
      const SendAndReceiveResponse& value() const { return *Unwrap(); }

      SendAndReceiveResponse* operator->() { return &value(); }
      const SendAndReceiveResponse* operator->() const { return &value(); }

      SendAndReceiveResponse& operator*() { return value(); }
      const SendAndReceiveResponse& operator*() const { return value(); }

     private:
      FIDL_ALIGNDECL
      uint8_t bytes_[SendAndReceiveResponse::PrimarySize +
                     SendAndReceiveResponse::MaxOutOfLine];
    };
  };

  // Collection of return types of FIDL calls in this protocol,
  // when the caller-allocate flavor or in-place call is used.
  class UnownedResultOf final {
    UnownedResultOf() = delete;

   public:
    class Send final : public ::fidl::Result {
     public:
      explicit Send(zx_handle_t _client, uint8_t* _request_bytes,
                    uint32_t _request_byte_capacity,
                    ::llcpp::fidl::test::json::Empty& e);
      explicit Send(const ::fidl::Result& result) : ::fidl::Result(result) {}
      Send(Send&&) = delete;
      Send(const Send&) = delete;
      Send* operator=(Send&&) = delete;
      Send* operator=(const Send&) = delete;
      ~Send() = default;
    };
    class SendAndReceive final : public ::fidl::Result {
     public:
      explicit SendAndReceive(zx_handle_t _client, uint8_t* _request_bytes,
                              uint32_t _request_byte_capacity,
                              ::llcpp::fidl::test::json::Empty& e,
                              uint8_t* _response_bytes,
                              uint32_t _response_byte_capacity);
      explicit SendAndReceive(const ::fidl::Result& result)
          : ::fidl::Result(result) {}
      SendAndReceive(SendAndReceive&&) = delete;
      SendAndReceive(const SendAndReceive&) = delete;
      SendAndReceive* operator=(SendAndReceive&&) = delete;
      SendAndReceive* operator=(const SendAndReceive&) = delete;
      ~SendAndReceive() = default;

      SendAndReceiveResponse* Unwrap() {
        ZX_DEBUG_ASSERT(ok());
        return reinterpret_cast<SendAndReceiveResponse*>(bytes_);
      }
      const SendAndReceiveResponse* Unwrap() const {
        ZX_DEBUG_ASSERT(ok());
        return reinterpret_cast<const SendAndReceiveResponse*>(bytes_);
      }

      SendAndReceiveResponse& value() { return *Unwrap(); }
      const SendAndReceiveResponse& value() const { return *Unwrap(); }

      SendAndReceiveResponse* operator->() { return &value(); }
      const SendAndReceiveResponse* operator->() const { return &value(); }

      SendAndReceiveResponse& operator*() { return value(); }
      const SendAndReceiveResponse& operator*() const { return value(); }

     private:
      uint8_t* bytes_;
    };
  };

  // Methods to make a sync FIDL call directly on an unowned channel, avoiding
  // setting up a client.
  class Call final {
    Call() = delete;

   public:
    // Allocates 24 bytes of message buffer on the stack. No heap allocation
    // necessary.
    static ResultOf::Send Send(::zx::unowned_channel _client_end,
                               ::llcpp::fidl::test::json::Empty e) {
      return ResultOf::Send(_client_end->get(), e);
    }

    // Caller provides the backing storage for FIDL message via request and
    // response buffers.
    static UnownedResultOf::Send Send(::zx::unowned_channel _client_end,
                                      ::fidl::BytePart _request_buffer,
                                      ::llcpp::fidl::test::json::Empty e) {
      return UnownedResultOf::Send(_client_end->get(), _request_buffer.data(),
                                   _request_buffer.capacity(), e);
    }

    // Allocates 48 bytes of message buffer on the stack. No heap allocation
    // necessary.
    static ResultOf::SendAndReceive SendAndReceive(
        ::zx::unowned_channel _client_end, ::llcpp::fidl::test::json::Empty e) {
      return ResultOf::SendAndReceive(_client_end->get(), e);
    }

    // Caller provides the backing storage for FIDL message via request and
    // response buffers.
    static UnownedResultOf::SendAndReceive SendAndReceive(
        ::zx::unowned_channel _client_end, ::fidl::BytePart _request_buffer,
        ::llcpp::fidl::test::json::Empty e, ::fidl::BytePart _response_buffer) {
      return UnownedResultOf::SendAndReceive(
          _client_end->get(), _request_buffer.data(),
          _request_buffer.capacity(), e, _response_buffer.data(),
          _response_buffer.capacity());
    }

    // Handle all possible events defined in this protocol.
    // Blocks to consume exactly one message from the channel, then call the
    // corresponding handler defined in |EventHandlers|. The return status of
    // the handler function is folded with any transport-level errors and
    // returned.
    static ::fidl::Result HandleEvents(::zx::unowned_channel client_end,
                                       EventHandlers& handlers);
  };

  class SyncClient final {
   public:
    SyncClient() = default;
    explicit SyncClient(::zx::channel channel) : channel_(std::move(channel)) {}
    ~SyncClient() = default;
    SyncClient(SyncClient&&) = default;
    SyncClient& operator=(SyncClient&&) = default;

    const ::zx::channel& channel() const { return channel_; }

    ::zx::channel* mutable_channel() { return &channel_; }

    // Allocates 24 bytes of message buffer on the stack. No heap allocation
    // necessary.
    ResultOf::Send Send(::llcpp::fidl::test::json::Empty e) {
      return ResultOf::Send(this->channel().get(), e);
    }

    // Caller provides the backing storage for FIDL message via request and
    // response buffers.
    UnownedResultOf::Send Send(::fidl::BytePart _request_buffer,
                               ::llcpp::fidl::test::json::Empty e) {
      return UnownedResultOf::Send(this->channel().get(),
                                   _request_buffer.data(),
                                   _request_buffer.capacity(), e);
    }

    // Allocates 48 bytes of message buffer on the stack. No heap allocation
    // necessary.
    ResultOf::SendAndReceive SendAndReceive(
        ::llcpp::fidl::test::json::Empty e) {
      return ResultOf::SendAndReceive(this->channel().get(), e);
    }

    // Caller provides the backing storage for FIDL message via request and
    // response buffers.
    UnownedResultOf::SendAndReceive SendAndReceive(
        ::fidl::BytePart _request_buffer, ::llcpp::fidl::test::json::Empty e,
        ::fidl::BytePart _response_buffer) {
      return UnownedResultOf::SendAndReceive(
          this->channel().get(), _request_buffer.data(),
          _request_buffer.capacity(), e, _response_buffer.data(),
          _response_buffer.capacity());
    }

    // Handle all possible events defined in this protocol.
    // Blocks to consume exactly one message from the channel, then call the
    // corresponding handler defined in |EventHandlers|. The return status of
    // the handler function is folded with any transport-level errors and
    // returned.
    ::fidl::Result HandleEvents(EventHandlers& handlers) {
      return Call::HandleEvents(::zx::unowned_channel(channel_), handlers);
    }

   private:
    ::zx::channel channel_;
  };

  struct AsyncEventHandlers;
  class SendAndReceiveResponseContext;
  class ClientImpl;

  // Pure-virtual interface to be implemented by a server.
  class Interface {
   public:
    Interface() = default;
    virtual ~Interface() = default;

    // The marker protocol type within which this |Interface| class is defined.
    using _EnclosingProtocol = EmptyProtocol;

    using SendCompleter = ::fidl::Completer<>;

    virtual void Send(::llcpp::fidl::test::json::Empty e,
                      SendCompleter::Sync& _completer) = 0;

    class SendAndReceiveCompleterBase : public ::fidl::CompleterBase {
     public:
      // In the following methods, the return value indicates internal errors
      // during the reply, such as encoding or writing to the transport. Note
      // that any error will automatically lead to the destruction of the
      // binding, after which the |on_unbound| callback will be triggered with a
      // detailed reason.
      //
      // See //zircon/system/ulib/fidl/include/lib/fidl/llcpp/server.h.
      //
      // Because the reply status is identical to the unbinding status, it can
      // be safely ignored.
      ::fidl::Result Reply(::llcpp::fidl::test::json::Empty e);
      ::fidl::Result Reply(::fidl::BytePart _buffer,
                           ::llcpp::fidl::test::json::Empty e);

     protected:
      using ::fidl::CompleterBase::CompleterBase;
    };

    using SendAndReceiveCompleter =
        ::fidl::Completer<SendAndReceiveCompleterBase>;

    virtual void SendAndReceive(::llcpp::fidl::test::json::Empty e,
                                SendAndReceiveCompleter::Sync& _completer) = 0;
  };

  // Attempts to dispatch the incoming message to a handler function in the
  // server implementation. If there is no matching handler, it returns false,
  // leaving the message and transaction intact. In all other cases, it consumes
  // the message and returns true. It is possible to chain multiple TryDispatch
  // functions in this manner.
  static ::fidl::DispatchResult TryDispatch(Interface* impl,
                                            fidl_incoming_msg_t* msg,
                                            ::fidl::Transaction* txn);

  // Dispatches the incoming message to one of the handlers functions in the
  // protocol. If there is no matching handler, it closes all the handles in
  // |msg| and closes the channel with a |ZX_ERR_NOT_SUPPORTED| epitaph, before
  // returning false. The message should then be discarded.
  static ::fidl::DispatchResult Dispatch(Interface* impl,
                                         fidl_incoming_msg_t* msg,
                                         ::fidl::Transaction* txn);

  // Same as |Dispatch|, but takes a |void*| instead of |Interface*|.
  // Only used with |fidl::BindServer| to reduce template expansion.
  // Do not call this method manually. Use |Dispatch| instead.
  static ::fidl::DispatchResult TypeErasedDispatch(void* impl,
                                                   fidl_incoming_msg_t* msg,
                                                   ::fidl::Transaction* txn) {
    return Dispatch(static_cast<Interface*>(impl), msg, txn);
  }

  static zx_status_t SendReceiveEvent(::zx::unowned_channel _channel,
                                      ::llcpp::fidl::test::json::Empty e);

  // Caller provides the backing storage for FIDL message via response buffers.
  static zx_status_t SendReceiveEvent(::zx::unowned_channel _channel,
                                      ::fidl::BytePart _buffer,
                                      ::llcpp::fidl::test::json::Empty e);

  class EventSender;
};

}  // namespace json
}  // namespace test
}  // namespace fidl
}  // namespace llcpp

namespace fidl {

template <>
struct IsFidlType<::llcpp::fidl::test::json::Empty> : public std::true_type {};
template <>
struct IsStruct<::llcpp::fidl::test::json::Empty> : public std::true_type {};
static_assert(std::is_standard_layout_v<::llcpp::fidl::test::json::Empty>);
static_assert(offsetof(::llcpp::fidl::test::json::Empty, __reserved) == 0);
static_assert(sizeof(::llcpp::fidl::test::json::Empty) ==
              ::llcpp::fidl::test::json::Empty::PrimarySize);

template <>
struct IsFidlType<::llcpp::fidl::test::json::EmptyProtocol::SendRequest>
    : public std::true_type {};
template <>
struct IsFidlMessage<::llcpp::fidl::test::json::EmptyProtocol::SendRequest>
    : public std::true_type {};
static_assert(
    sizeof(::llcpp::fidl::test::json::EmptyProtocol::SendRequest) ==
    ::llcpp::fidl::test::json::EmptyProtocol::SendRequest::PrimarySize);
static_assert(offsetof(::llcpp::fidl::test::json::EmptyProtocol::SendRequest,
                       e) == 16);

template <>
struct IsFidlType<::llcpp::fidl::test::json::EmptyProtocol::ReceiveResponse>
    : public std::true_type {};
template <>
struct IsFidlMessage<::llcpp::fidl::test::json::EmptyProtocol::ReceiveResponse>
    : public std::true_type {};
static_assert(
    sizeof(::llcpp::fidl::test::json::EmptyProtocol::ReceiveResponse) ==
    ::llcpp::fidl::test::json::EmptyProtocol::ReceiveResponse::PrimarySize);
static_assert(
    offsetof(::llcpp::fidl::test::json::EmptyProtocol::ReceiveResponse, e) ==
    16);

template <>
struct IsFidlType<
    ::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveRequest>
    : public std::true_type {};
template <>
struct IsFidlMessage<
    ::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveRequest>
    : public std::true_type {};
static_assert(
    sizeof(::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveRequest) ==
    ::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveRequest::
        PrimarySize);
static_assert(
    offsetof(::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveRequest,
             e) == 16);

template <>
struct IsFidlType<
    ::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveResponse>
    : public std::true_type {};
template <>
struct IsFidlMessage<
    ::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveResponse>
    : public std::true_type {};
static_assert(
    sizeof(::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveResponse) ==
    ::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveResponse::
        PrimarySize);
static_assert(
    offsetof(::llcpp::fidl::test::json::EmptyProtocol::SendAndReceiveResponse,
             e) == 16);

}  // namespace fidl

namespace llcpp {

namespace fidl {
namespace test {
namespace json {

struct EmptyProtocol::AsyncEventHandlers {
  ::fit::function<void(ReceiveResponse* msg)> receive;
};

class EmptyProtocol::SendAndReceiveResponseContext
    : public ::fidl::internal::ResponseContext {
 public:
  SendAndReceiveResponseContext();

  virtual void OnReply(EmptyProtocol::SendAndReceiveResponse* message) = 0;

 private:
  void OnReply(uint8_t* reply) override;
};

class EmptyProtocol::ClientImpl final : private ::fidl::internal::ClientBase {
 public:
  // Allocates 24 bytes of message buffer on the stack. No heap allocation
  // necessary.
  ::fidl::Result Send(::llcpp::fidl::test::json::Empty e);

  // Caller provides the backing storage for FIDL message via request and
  // response buffers.
  ::fidl::Result Send(::fidl::BytePart _request_buffer,
                      ::llcpp::fidl::test::json::Empty e);

  // Asynchronous variant of |EmptyProtocol.SendAndReceive()|. Allocates 24
  // bytes of request buffer on the stack. The callback is stored on the heap.
  ::fidl::Result SendAndReceive(
      ::llcpp::fidl::test::json::Empty e,
      ::fit::callback<void(::llcpp::fidl::test::json::Empty e)> _cb);
  // Asynchronous variant of |EmptyProtocol.SendAndReceive()|. Caller provides
  // the backing storage for FIDL message via request buffer. Ownership of
  // _context is given unsafely to the binding until OnError() or OnReply() are
  // called on it.
  ::fidl::Result SendAndReceive(::fidl::BytePart _request_buffer,
                                ::llcpp::fidl::test::json::Empty e,
                                SendAndReceiveResponseContext* _context);
  // Synchronous variant of |EmptyProtocol.SendAndReceive()|. Allocates 48 bytes
  // of message buffer on the stack. No heap allocation necessary.
  ResultOf::SendAndReceive SendAndReceive_Sync(
      ::llcpp::fidl::test::json::Empty e);

  // Synchronous variant of |EmptyProtocol.SendAndReceive()|. Caller provides
  // the backing storage for FIDL message via request and response buffers.
  UnownedResultOf::SendAndReceive SendAndReceive_Sync(
      ::fidl::BytePart _request_buffer, ::llcpp::fidl::test::json::Empty e,
      ::fidl::BytePart _response_buffer);

 private:
  friend class ::fidl::Client<EmptyProtocol>;

  explicit ClientImpl(AsyncEventHandlers handlers)
      : handlers_(std::move(handlers)) {}

  std::optional<::fidl::UnbindInfo> DispatchEvent(
      fidl_incoming_msg_t* msg) override;

  AsyncEventHandlers handlers_;
};

class EmptyProtocol::EventSender {
 public:
  zx_status_t Receive(::llcpp::fidl::test::json::Empty e) const {
    if (auto _binding = binding_.lock()) {
      return SendReceiveEvent(_binding->channel(), std::move(e));
    }
    return ZX_ERR_CANCELED;
  }

  zx_status_t Receive(::fidl::BytePart _buffer,
                      ::llcpp::fidl::test::json::Empty e) const {
    if (auto _binding = binding_.lock()) {
      return SendReceiveEvent(_binding->channel(), std::move(_buffer),
                              std::move(e));
    }
    return ZX_ERR_CANCELED;
  }

 private:
  friend class ::fidl::ServerBindingRef<EmptyProtocol>;

  explicit EventSender(
      std::weak_ptr<::fidl::internal::AsyncServerBinding> binding)
      : binding_(std::move(binding)) {}

  std::weak_ptr<::fidl::internal::AsyncServerBinding> binding_;
};

}  // namespace json
}  // namespace test
}  // namespace fidl
}  // namespace llcpp