tools/fidl/fidlgen_llcpp/goldens/service.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/memory.h>
#include <lib/fidl/llcpp/message.h>
#include <lib/fidl/llcpp/message_storage.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 service {

class SecondProtocol;
class FirstProtocol;
class SingleMemberService;
class MultiHomogeneousMemberService;
class MultiHeterogeneousMemberService;
class EmptyService;

extern "C" const fidl_type_t
    fidl_test_service_SecondProtocolMethodOnSecondRequestTable;
extern "C" const fidl_type_t
    fidl_test_service_SecondProtocolMethodOnSecondResponseTable;

class SecondProtocol final {
  SecondProtocol() = delete;

 public:
  struct MethodOnSecondRequest final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    explicit MethodOnSecondRequest(zx_txid_t _txid) { _InitHeader(_txid); }

    static constexpr const fidl_type_t* Type =
        &::fidl::_llcpp_coding_AnyZeroArgMessageTable;
    static constexpr uint32_t MaxNumHandles = 0;
    static constexpr uint32_t PrimarySize = 16;
    static constexpr uint32_t MaxOutOfLine = 0;
    static constexpr uint32_t AltPrimarySize = 16;
    static constexpr uint32_t AltMaxOutOfLine = 0;
    static constexpr bool HasFlexibleEnvelope = false;
    static constexpr bool HasPointer = false;
    static constexpr ::fidl::internal::TransactionalMessageKind MessageKind =
        ::fidl::internal::TransactionalMessageKind::kRequest;

    class UnownedEncodedMessage final {
     public:
      UnownedEncodedMessage(uint8_t* _bytes, uint32_t _byte_size,
                            zx_txid_t _txid)
          : message_(_bytes, _byte_size, sizeof(MethodOnSecondRequest), nullptr,
                     0, 0) {
        FIDL_ALIGNDECL MethodOnSecondRequest _request(_txid);
        message_.LinearizeAndEncode<MethodOnSecondRequest>(&_request);
      }
      UnownedEncodedMessage(uint8_t* bytes, uint32_t byte_size,
                            MethodOnSecondRequest* request)
          : message_(bytes, byte_size, sizeof(MethodOnSecondRequest), nullptr,
                     0, 0) {
        message_.LinearizeAndEncode<MethodOnSecondRequest>(request);
      }
      UnownedEncodedMessage(const UnownedEncodedMessage&) = delete;
      UnownedEncodedMessage(UnownedEncodedMessage&&) = delete;
      UnownedEncodedMessage* operator=(const UnownedEncodedMessage&) = delete;
      UnownedEncodedMessage* operator=(UnownedEncodedMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
#ifdef __Fuchsia__
      const char* status_string() const { return message_.status_string(); }
#endif
      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:
      MethodOnSecondRequest& Message() {
        return *reinterpret_cast<MethodOnSecondRequest*>(message_.bytes());
      }
      ::fidl::OutgoingMessage message_;
    };

    class OwnedEncodedMessage final {
     public:
      explicit OwnedEncodedMessage(zx_txid_t _txid)
          : message_(bytes_, sizeof(bytes_), _txid) {}
      explicit OwnedEncodedMessage(MethodOnSecondRequest* request)
          : message_(bytes_, sizeof(bytes_), request) {}
      OwnedEncodedMessage(const OwnedEncodedMessage&) = delete;
      OwnedEncodedMessage(OwnedEncodedMessage&&) = delete;
      OwnedEncodedMessage* operator=(const OwnedEncodedMessage&) = delete;
      OwnedEncodedMessage* operator=(OwnedEncodedMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
#ifdef __Fuchsia__
      const char* status_string() const { return message_.status_string(); }
#endif
      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];
      UnownedEncodedMessage message_;
    };

    class DecodedMessage final : public ::fidl::internal::IncomingMessage {
     public:
      DecodedMessage(uint8_t* bytes, uint32_t byte_actual,
                     zx_handle_info_t* handles = nullptr,
                     uint32_t handle_actual = 0)
          : ::fidl::internal::IncomingMessage(bytes, byte_actual, handles,
                                              handle_actual) {
        Decode<MethodOnSecondRequest>();
      }
      DecodedMessage(fidl_incoming_msg_t* msg)
          : ::fidl::internal::IncomingMessage(msg) {
        Decode<MethodOnSecondRequest>();
      }
      DecodedMessage(const DecodedMessage&) = delete;
      DecodedMessage(DecodedMessage&&) = delete;
      DecodedMessage* operator=(const DecodedMessage&) = delete;
      DecodedMessage* operator=(DecodedMessage&&) = delete;

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

      // Release the ownership of the decoded message. That means that the
      // handles won't be closed When the object is destroyed. After calling
      // this method, the DecodedMessage object should not be used anymore.
      void ReleasePrimaryObject() { ResetBytes(); }

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

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

   private:
    void _InitHeader(zx_txid_t _txid);
  };

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

   public:
    class MethodOnSecond final : public ::fidl::Result {
     public:
      explicit MethodOnSecond(zx_handle_t _client);
      explicit MethodOnSecond(const ::fidl::Result& result)
          : ::fidl::Result(result) {}
      MethodOnSecond(MethodOnSecond&&) = delete;
      MethodOnSecond(const MethodOnSecond&) = delete;
      MethodOnSecond* operator=(MethodOnSecond&&) = delete;
      MethodOnSecond* operator=(const MethodOnSecond&) = delete;
      ~MethodOnSecond() = default;

     private:
    };
  };

  // 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 MethodOnSecond final : public ::fidl::Result {
     public:
      explicit MethodOnSecond(zx_handle_t _client);
      explicit MethodOnSecond(const ::fidl::Result& result)
          : ::fidl::Result(result) {}
      MethodOnSecond(MethodOnSecond&&) = delete;
      MethodOnSecond(const MethodOnSecond&) = delete;
      MethodOnSecond* operator=(MethodOnSecond&&) = delete;
      MethodOnSecond* operator=(const MethodOnSecond&) = delete;
      ~MethodOnSecond() = default;
    };
  };

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

   public:
    // Allocates 16 bytes of message buffer on the stack. No heap allocation
    // necessary.
    static ResultOf::MethodOnSecond MethodOnSecond(
        ::zx::unowned_channel _client_end) {
      return ResultOf::MethodOnSecond(_client_end->get());
    }
  };

  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 16 bytes of message buffer on the stack. No heap allocation
    // necessary.
    ResultOf::MethodOnSecond MethodOnSecond() {
      return ResultOf::MethodOnSecond(this->channel().get());
    }

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

  struct AsyncEventHandlers;
  class ClientImpl;

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

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

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

    virtual void MethodOnSecond(MethodOnSecondCompleter::Sync& _completer) = 0;

   private:
    ::fidl::DispatchResult dispatch_message(fidl_incoming_msg_t* msg,
                                            ::fidl::Transaction* txn) final;
  };

  // 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);
  }

  class EventSender;
  class WeakEventSender;
};

extern "C" const fidl_type_t
    fidl_test_service_FirstProtocolMethodOnFirstRequestTable;
extern "C" const fidl_type_t
    fidl_test_service_FirstProtocolMethodOnFirstResponseTable;

class FirstProtocol final {
  FirstProtocol() = delete;

 public:
  struct MethodOnFirstRequest final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    explicit MethodOnFirstRequest(zx_txid_t _txid) { _InitHeader(_txid); }

    static constexpr const fidl_type_t* Type =
        &::fidl::_llcpp_coding_AnyZeroArgMessageTable;
    static constexpr uint32_t MaxNumHandles = 0;
    static constexpr uint32_t PrimarySize = 16;
    static constexpr uint32_t MaxOutOfLine = 0;
    static constexpr uint32_t AltPrimarySize = 16;
    static constexpr uint32_t AltMaxOutOfLine = 0;
    static constexpr bool HasFlexibleEnvelope = false;
    static constexpr bool HasPointer = false;
    static constexpr ::fidl::internal::TransactionalMessageKind MessageKind =
        ::fidl::internal::TransactionalMessageKind::kRequest;

    class UnownedEncodedMessage final {
     public:
      UnownedEncodedMessage(uint8_t* _bytes, uint32_t _byte_size,
                            zx_txid_t _txid)
          : message_(_bytes, _byte_size, sizeof(MethodOnFirstRequest), nullptr,
                     0, 0) {
        FIDL_ALIGNDECL MethodOnFirstRequest _request(_txid);
        message_.LinearizeAndEncode<MethodOnFirstRequest>(&_request);
      }
      UnownedEncodedMessage(uint8_t* bytes, uint32_t byte_size,
                            MethodOnFirstRequest* request)
          : message_(bytes, byte_size, sizeof(MethodOnFirstRequest), nullptr, 0,
                     0) {
        message_.LinearizeAndEncode<MethodOnFirstRequest>(request);
      }
      UnownedEncodedMessage(const UnownedEncodedMessage&) = delete;
      UnownedEncodedMessage(UnownedEncodedMessage&&) = delete;
      UnownedEncodedMessage* operator=(const UnownedEncodedMessage&) = delete;
      UnownedEncodedMessage* operator=(UnownedEncodedMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
#ifdef __Fuchsia__
      const char* status_string() const { return message_.status_string(); }
#endif
      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:
      MethodOnFirstRequest& Message() {
        return *reinterpret_cast<MethodOnFirstRequest*>(message_.bytes());
      }
      ::fidl::OutgoingMessage message_;
    };

    class OwnedEncodedMessage final {
     public:
      explicit OwnedEncodedMessage(zx_txid_t _txid)
          : message_(bytes_, sizeof(bytes_), _txid) {}
      explicit OwnedEncodedMessage(MethodOnFirstRequest* request)
          : message_(bytes_, sizeof(bytes_), request) {}
      OwnedEncodedMessage(const OwnedEncodedMessage&) = delete;
      OwnedEncodedMessage(OwnedEncodedMessage&&) = delete;
      OwnedEncodedMessage* operator=(const OwnedEncodedMessage&) = delete;
      OwnedEncodedMessage* operator=(OwnedEncodedMessage&&) = delete;

      zx_status_t status() const { return message_.status(); }
#ifdef __Fuchsia__
      const char* status_string() const { return message_.status_string(); }
#endif
      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];
      UnownedEncodedMessage message_;
    };

    class DecodedMessage final : public ::fidl::internal::IncomingMessage {
     public:
      DecodedMessage(uint8_t* bytes, uint32_t byte_actual,
                     zx_handle_info_t* handles = nullptr,
                     uint32_t handle_actual = 0)
          : ::fidl::internal::IncomingMessage(bytes, byte_actual, handles,
                                              handle_actual) {
        Decode<MethodOnFirstRequest>();
      }
      DecodedMessage(fidl_incoming_msg_t* msg)
          : ::fidl::internal::IncomingMessage(msg) {
        Decode<MethodOnFirstRequest>();
      }
      DecodedMessage(const DecodedMessage&) = delete;
      DecodedMessage(DecodedMessage&&) = delete;
      DecodedMessage* operator=(const DecodedMessage&) = delete;
      DecodedMessage* operator=(DecodedMessage&&) = delete;

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

      // Release the ownership of the decoded message. That means that the
      // handles won't be closed When the object is destroyed. After calling
      // this method, the DecodedMessage object should not be used anymore.
      void ReleasePrimaryObject() { ResetBytes(); }

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

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

   private:
    void _InitHeader(zx_txid_t _txid);
  };

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

   public:
    class MethodOnFirst final : public ::fidl::Result {
     public:
      explicit MethodOnFirst(zx_handle_t _client);
      explicit MethodOnFirst(const ::fidl::Result& result)
          : ::fidl::Result(result) {}
      MethodOnFirst(MethodOnFirst&&) = delete;
      MethodOnFirst(const MethodOnFirst&) = delete;
      MethodOnFirst* operator=(MethodOnFirst&&) = delete;
      MethodOnFirst* operator=(const MethodOnFirst&) = delete;
      ~MethodOnFirst() = default;

     private:
    };
  };

  // 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 MethodOnFirst final : public ::fidl::Result {
     public:
      explicit MethodOnFirst(zx_handle_t _client);
      explicit MethodOnFirst(const ::fidl::Result& result)
          : ::fidl::Result(result) {}
      MethodOnFirst(MethodOnFirst&&) = delete;
      MethodOnFirst(const MethodOnFirst&) = delete;
      MethodOnFirst* operator=(MethodOnFirst&&) = delete;
      MethodOnFirst* operator=(const MethodOnFirst&) = delete;
      ~MethodOnFirst() = default;
    };
  };

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

   public:
    // Allocates 16 bytes of message buffer on the stack. No heap allocation
    // necessary.
    static ResultOf::MethodOnFirst MethodOnFirst(
        ::zx::unowned_channel _client_end) {
      return ResultOf::MethodOnFirst(_client_end->get());
    }
  };

  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 16 bytes of message buffer on the stack. No heap allocation
    // necessary.
    ResultOf::MethodOnFirst MethodOnFirst() {
      return ResultOf::MethodOnFirst(this->channel().get());
    }

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

  struct AsyncEventHandlers;
  class ClientImpl;

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

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

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

    virtual void MethodOnFirst(MethodOnFirstCompleter::Sync& _completer) = 0;

   private:
    ::fidl::DispatchResult dispatch_message(fidl_incoming_msg_t* msg,
                                            ::fidl::Transaction* txn) final;
  };

  // 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);
  }

  class EventSender;
  class WeakEventSender;
};

class SingleMemberService final {
  SingleMemberService() = default;

 public:
  static constexpr char Name[] = "fidl.test.service.SingleMemberService";

  // Client protocol for connecting to member protocols of a service instance.
  class ServiceClient final {
    ServiceClient() = delete;

   public:
    ServiceClient(::zx::channel dir,
                  ::fidl::internal::ConnectMemberFunc connect_func)
        : dir_(std::move(dir)), connect_func_(connect_func) {}

    // Connects to the member protocol "single_member". Returns a
    // |fidl::ClientChannel| on success, which can be used with
    // |fidl::BindSyncClient| to create a synchronous client.
    //
    // # Errors
    //
    // On failure, returns a fit::error with zx_status_t != ZX_OK.
    // Failures can occur if channel creation failed, or if there was an issue
    // making a |fuchsia.io.Directory::Open| call.
    //
    // Since the call to |Open| is asynchronous, an error sent by the remote end
    // will not result in a failure of this method. Any errors sent by the
    // remote will appear on the |ClientChannel| returned from this method.
    ::fidl::result<::fidl::ClientChannel<FirstProtocol>>
    connect_single_member() {
      ::zx::channel local, remote;
      zx_status_t result = ::zx::channel::create(0, &local, &remote);
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      result =
          connect_func_(::zx::unowned_channel(dir_),
                        ::fidl::StringView("single_member"), std::move(remote));
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      return ::fit::ok(::fidl::ClientChannel<FirstProtocol>(std::move(local)));
    }

   private:
    ::zx::channel dir_;
    ::fidl::internal::ConnectMemberFunc connect_func_;
  };

  // Facilitates member protocol registration for servers.
  class Handler final {
   public:
    // Constructs a FIDL Service-typed handler. Does not take ownership of
    // |service_handler|.
    explicit Handler(::llcpp::fidl::ServiceHandlerInterface* service_handler)
        : service_handler_(service_handler) {}

    // Adds member "single_member" to the service instance. |handler| will be
    // invoked on connection attempts.
    //
    // # Errors
    //
    // Returns ZX_ERR_ALREADY_EXISTS if the member was already added.
    zx_status_t add_single_member(
        ::llcpp::fidl::ServiceHandlerInterface::MemberHandler handler) {
      return service_handler_->AddMember("single_member", std::move(handler));
    }

   private:
    ::llcpp::fidl::ServiceHandlerInterface* service_handler_;  // Not owned.
  };
};

class MultiHomogeneousMemberService final {
  MultiHomogeneousMemberService() = default;

 public:
  static constexpr char Name[] =
      "fidl.test.service.MultiHomogeneousMemberService";

  // Client protocol for connecting to member protocols of a service instance.
  class ServiceClient final {
    ServiceClient() = delete;

   public:
    ServiceClient(::zx::channel dir,
                  ::fidl::internal::ConnectMemberFunc connect_func)
        : dir_(std::move(dir)), connect_func_(connect_func) {}

    // Connects to the member protocol "first_member". Returns a
    // |fidl::ClientChannel| on success, which can be used with
    // |fidl::BindSyncClient| to create a synchronous client.
    //
    // # Errors
    //
    // On failure, returns a fit::error with zx_status_t != ZX_OK.
    // Failures can occur if channel creation failed, or if there was an issue
    // making a |fuchsia.io.Directory::Open| call.
    //
    // Since the call to |Open| is asynchronous, an error sent by the remote end
    // will not result in a failure of this method. Any errors sent by the
    // remote will appear on the |ClientChannel| returned from this method.
    ::fidl::result<::fidl::ClientChannel<FirstProtocol>>
    connect_first_member() {
      ::zx::channel local, remote;
      zx_status_t result = ::zx::channel::create(0, &local, &remote);
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      result =
          connect_func_(::zx::unowned_channel(dir_),
                        ::fidl::StringView("first_member"), std::move(remote));
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      return ::fit::ok(::fidl::ClientChannel<FirstProtocol>(std::move(local)));
    }

    // Connects to the member protocol "second_member". Returns a
    // |fidl::ClientChannel| on success, which can be used with
    // |fidl::BindSyncClient| to create a synchronous client.
    //
    // # Errors
    //
    // On failure, returns a fit::error with zx_status_t != ZX_OK.
    // Failures can occur if channel creation failed, or if there was an issue
    // making a |fuchsia.io.Directory::Open| call.
    //
    // Since the call to |Open| is asynchronous, an error sent by the remote end
    // will not result in a failure of this method. Any errors sent by the
    // remote will appear on the |ClientChannel| returned from this method.
    ::fidl::result<::fidl::ClientChannel<FirstProtocol>>
    connect_second_member() {
      ::zx::channel local, remote;
      zx_status_t result = ::zx::channel::create(0, &local, &remote);
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      result =
          connect_func_(::zx::unowned_channel(dir_),
                        ::fidl::StringView("second_member"), std::move(remote));
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      return ::fit::ok(::fidl::ClientChannel<FirstProtocol>(std::move(local)));
    }

   private:
    ::zx::channel dir_;
    ::fidl::internal::ConnectMemberFunc connect_func_;
  };

  // Facilitates member protocol registration for servers.
  class Handler final {
   public:
    // Constructs a FIDL Service-typed handler. Does not take ownership of
    // |service_handler|.
    explicit Handler(::llcpp::fidl::ServiceHandlerInterface* service_handler)
        : service_handler_(service_handler) {}

    // Adds member "first_member" to the service instance. |handler| will be
    // invoked on connection attempts.
    //
    // # Errors
    //
    // Returns ZX_ERR_ALREADY_EXISTS if the member was already added.
    zx_status_t add_first_member(
        ::llcpp::fidl::ServiceHandlerInterface::MemberHandler handler) {
      return service_handler_->AddMember("first_member", std::move(handler));
    }

    // Adds member "second_member" to the service instance. |handler| will be
    // invoked on connection attempts.
    //
    // # Errors
    //
    // Returns ZX_ERR_ALREADY_EXISTS if the member was already added.
    zx_status_t add_second_member(
        ::llcpp::fidl::ServiceHandlerInterface::MemberHandler handler) {
      return service_handler_->AddMember("second_member", std::move(handler));
    }

   private:
    ::llcpp::fidl::ServiceHandlerInterface* service_handler_;  // Not owned.
  };
};

class MultiHeterogeneousMemberService final {
  MultiHeterogeneousMemberService() = default;

 public:
  static constexpr char Name[] =
      "fidl.test.service.MultiHeterogeneousMemberService";

  // Client protocol for connecting to member protocols of a service instance.
  class ServiceClient final {
    ServiceClient() = delete;

   public:
    ServiceClient(::zx::channel dir,
                  ::fidl::internal::ConnectMemberFunc connect_func)
        : dir_(std::move(dir)), connect_func_(connect_func) {}

    // Connects to the member protocol "first_member". Returns a
    // |fidl::ClientChannel| on success, which can be used with
    // |fidl::BindSyncClient| to create a synchronous client.
    //
    // # Errors
    //
    // On failure, returns a fit::error with zx_status_t != ZX_OK.
    // Failures can occur if channel creation failed, or if there was an issue
    // making a |fuchsia.io.Directory::Open| call.
    //
    // Since the call to |Open| is asynchronous, an error sent by the remote end
    // will not result in a failure of this method. Any errors sent by the
    // remote will appear on the |ClientChannel| returned from this method.
    ::fidl::result<::fidl::ClientChannel<FirstProtocol>>
    connect_first_member() {
      ::zx::channel local, remote;
      zx_status_t result = ::zx::channel::create(0, &local, &remote);
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      result =
          connect_func_(::zx::unowned_channel(dir_),
                        ::fidl::StringView("first_member"), std::move(remote));
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      return ::fit::ok(::fidl::ClientChannel<FirstProtocol>(std::move(local)));
    }

    // Connects to the member protocol "second_member". Returns a
    // |fidl::ClientChannel| on success, which can be used with
    // |fidl::BindSyncClient| to create a synchronous client.
    //
    // # Errors
    //
    // On failure, returns a fit::error with zx_status_t != ZX_OK.
    // Failures can occur if channel creation failed, or if there was an issue
    // making a |fuchsia.io.Directory::Open| call.
    //
    // Since the call to |Open| is asynchronous, an error sent by the remote end
    // will not result in a failure of this method. Any errors sent by the
    // remote will appear on the |ClientChannel| returned from this method.
    ::fidl::result<::fidl::ClientChannel<SecondProtocol>>
    connect_second_member() {
      ::zx::channel local, remote;
      zx_status_t result = ::zx::channel::create(0, &local, &remote);
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      result =
          connect_func_(::zx::unowned_channel(dir_),
                        ::fidl::StringView("second_member"), std::move(remote));
      if (result != ZX_OK) {
        return ::fit::error(result);
      }
      return ::fit::ok(::fidl::ClientChannel<SecondProtocol>(std::move(local)));
    }

   private:
    ::zx::channel dir_;
    ::fidl::internal::ConnectMemberFunc connect_func_;
  };

  // Facilitates member protocol registration for servers.
  class Handler final {
   public:
    // Constructs a FIDL Service-typed handler. Does not take ownership of
    // |service_handler|.
    explicit Handler(::llcpp::fidl::ServiceHandlerInterface* service_handler)
        : service_handler_(service_handler) {}

    // Adds member "first_member" to the service instance. |handler| will be
    // invoked on connection attempts.
    //
    // # Errors
    //
    // Returns ZX_ERR_ALREADY_EXISTS if the member was already added.
    zx_status_t add_first_member(
        ::llcpp::fidl::ServiceHandlerInterface::MemberHandler handler) {
      return service_handler_->AddMember("first_member", std::move(handler));
    }

    // Adds member "second_member" to the service instance. |handler| will be
    // invoked on connection attempts.
    //
    // # Errors
    //
    // Returns ZX_ERR_ALREADY_EXISTS if the member was already added.
    zx_status_t add_second_member(
        ::llcpp::fidl::ServiceHandlerInterface::MemberHandler handler) {
      return service_handler_->AddMember("second_member", std::move(handler));
    }

   private:
    ::llcpp::fidl::ServiceHandlerInterface* service_handler_;  // Not owned.
  };
};

class EmptyService final {
  EmptyService() = default;

 public:
  static constexpr char Name[] = "fidl.test.service.EmptyService";

  // Client protocol for connecting to member protocols of a service instance.
  class ServiceClient final {
    ServiceClient() = delete;

   public:
    ServiceClient(::zx::channel dir,
                  ::fidl::internal::ConnectMemberFunc connect_func) {
      (void)dir;
      (void)connect_func;
    }

   private:
  };

  // Facilitates member protocol registration for servers.
  class Handler final {
   public:
    // Constructs a FIDL Service-typed handler. Does not take ownership of
    // |service_handler|.
    explicit Handler(::llcpp::fidl::ServiceHandlerInterface* service_handler) {
      (void)service_handler;
    }

   private:
  };
};

}  // namespace service
}  // namespace test
}  // namespace fidl
}  // namespace llcpp

namespace fidl {

template <>
struct IsFidlType<
    ::llcpp::fidl::test::service::SecondProtocol::MethodOnSecondRequest>
    : public std::true_type {};
template <>
struct IsFidlMessage<
    ::llcpp::fidl::test::service::SecondProtocol::MethodOnSecondRequest>
    : public std::true_type {};
static_assert(
    sizeof(
        ::llcpp::fidl::test::service::SecondProtocol::MethodOnSecondRequest) ==
    ::llcpp::fidl::test::service::SecondProtocol::MethodOnSecondRequest::
        PrimarySize);

template <>
struct IsFidlType<
    ::llcpp::fidl::test::service::FirstProtocol::MethodOnFirstRequest>
    : public std::true_type {};
template <>
struct IsFidlMessage<
    ::llcpp::fidl::test::service::FirstProtocol::MethodOnFirstRequest>
    : public std::true_type {};
static_assert(
    sizeof(::llcpp::fidl::test::service::FirstProtocol::MethodOnFirstRequest) ==
    ::llcpp::fidl::test::service::FirstProtocol::MethodOnFirstRequest::
        PrimarySize);

}  // namespace fidl

namespace llcpp {

namespace fidl {
namespace test {
namespace service {

struct SecondProtocol::AsyncEventHandlers {};

class SecondProtocol::ClientImpl final : private ::fidl::internal::ClientBase {
 public:
  // Allocates 16 bytes of message buffer on the stack. No heap allocation
  // necessary.
  ::fidl::Result MethodOnSecond();

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

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

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

  AsyncEventHandlers handlers_;
};

// |EventSender| owns a server endpoint of a channel speaking
// the SecondProtocol protocol, and can send events in that protocol.
class SecondProtocol::EventSender {
 public:
  // Constructs an event sender with an invalid channel.
  EventSender() = default;

  // TODO(fxbug.dev/65212): EventSender should take a ::fidl::ServerEnd.
  explicit EventSender(::zx::channel server_end)
      : server_end_(std::move(server_end)) {}

  // The underlying server channel endpoint, which may be replaced at run-time.
  const ::zx::channel& channel() const { return server_end_; }
  ::zx::channel& channel() { return server_end_; }

  // Whether the underlying channel is valid.
  bool is_valid() const { return server_end_.is_valid(); }

 private:
  ::zx::channel server_end_;
};

class SecondProtocol::WeakEventSender {
 public:
 private:
  friend class ::fidl::ServerBindingRef<SecondProtocol>;

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

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

struct FirstProtocol::AsyncEventHandlers {};

class FirstProtocol::ClientImpl final : private ::fidl::internal::ClientBase {
 public:
  // Allocates 16 bytes of message buffer on the stack. No heap allocation
  // necessary.
  ::fidl::Result MethodOnFirst();

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

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

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

  AsyncEventHandlers handlers_;
};

// |EventSender| owns a server endpoint of a channel speaking
// the FirstProtocol protocol, and can send events in that protocol.
class FirstProtocol::EventSender {
 public:
  // Constructs an event sender with an invalid channel.
  EventSender() = default;

  // TODO(fxbug.dev/65212): EventSender should take a ::fidl::ServerEnd.
  explicit EventSender(::zx::channel server_end)
      : server_end_(std::move(server_end)) {}

  // The underlying server channel endpoint, which may be replaced at run-time.
  const ::zx::channel& channel() const { return server_end_; }
  ::zx::channel& channel() { return server_end_; }

  // Whether the underlying channel is valid.
  bool is_valid() const { return server_end_.is_valid(); }

 private:
  ::zx::channel server_end_;
};

class FirstProtocol::WeakEventSender {
 public:
 private:
  friend class ::fidl::ServerBindingRef<FirstProtocol>;

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

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

}  // namespace service
}  // namespace test
}  // namespace fidl
}  // namespace llcpp