garnet/go/src/fidl/compiler/backend/goldens/nullable.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/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 <variant>
#ifdef __Fuchsia__
#include <lib/fidl/llcpp/client.h>
#include <lib/fidl/llcpp/connect_service.h>
#include <lib/fidl/llcpp/message.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>
#include <lib/zx/vmo.h>
#endif  // __Fuchsia__
#include <zircon/fidl.h>
#include <zx/llcpp/fidl.h>

namespace llcpp {

namespace fidl {
namespace test {
namespace nullable {

struct StructWithNullableVector;
struct StructWithNullableUnion;
struct StructWithNullableStruct;
struct StructWithNullableString;
struct StructWithNullableRequest;
struct StructWithNullableProtocol;
struct StructWithNullableHandle;
class SimpleProtocol;
class SimpleUnion;
struct Int32Wrapper;

extern "C" const fidl_type_t fidl_test_nullable_SimpleUnionTable;

class SimpleUnion {
 public:
  SimpleUnion() : ordinal_(Ordinal::Invalid), envelope_{} {}

  SimpleUnion(SimpleUnion&&) = default;
  SimpleUnion& operator=(SimpleUnion&&) = default;

  ~SimpleUnion() { reset_ptr(nullptr); }

  enum class Tag : fidl_xunion_tag_t {
    kA = 1,  // 0x1
    kB = 2,  // 0x2
  };

  bool has_invalid_tag() const { return ordinal_ == Ordinal::Invalid; }

  bool is_a() const { return ordinal_ == Ordinal::kA; }

  static SimpleUnion WithA(::fidl::tracking_ptr<int32_t>&& val) {
    SimpleUnion result;
    result.set_a(std::move(val));
    return result;
  }

  void set_a(::fidl::tracking_ptr<int32_t>&& elem) {
    ordinal_ = Ordinal::kA;
    reset_ptr(static_cast<::fidl::tracking_ptr<void>>(std::move(elem)));
  }

  int32_t& mutable_a() {
    ZX_ASSERT(ordinal_ == Ordinal::kA);
    return *static_cast<int32_t*>(envelope_.data.get());
  }
  const int32_t& a() const {
    ZX_ASSERT(ordinal_ == Ordinal::kA);
    return *static_cast<int32_t*>(envelope_.data.get());
  }

  bool is_b() const { return ordinal_ == Ordinal::kB; }

  static SimpleUnion WithB(::fidl::tracking_ptr<float>&& val) {
    SimpleUnion result;
    result.set_b(std::move(val));
    return result;
  }

  void set_b(::fidl::tracking_ptr<float>&& elem) {
    ordinal_ = Ordinal::kB;
    reset_ptr(static_cast<::fidl::tracking_ptr<void>>(std::move(elem)));
  }

  float& mutable_b() {
    ZX_ASSERT(ordinal_ == Ordinal::kB);
    return *static_cast<float*>(envelope_.data.get());
  }
  const float& b() const {
    ZX_ASSERT(ordinal_ == Ordinal::kB);
    return *static_cast<float*>(envelope_.data.get());
  }
  Tag which() const {
    ZX_ASSERT(!has_invalid_tag());
    return static_cast<Tag>(ordinal_);
  }

  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_SimpleUnionTable;
  static constexpr uint32_t MaxNumHandles = 0;
  static constexpr uint32_t PrimarySize = 24;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 8;
  static constexpr bool HasPointer = true;
  static constexpr bool IsResource = false;

 private:
  enum class Ordinal : fidl_xunion_tag_t {
    Invalid = 0,
    kA = 1,  // 0x1
    kB = 2,  // 0x2
  };

  void reset_ptr(::fidl::tracking_ptr<void>&& new_ptr) {
    // To clear the existing value, std::move it and let it go out of scope.
    switch (static_cast<fidl_xunion_tag_t>(ordinal_)) {
      case 1: {
        ::fidl::tracking_ptr<int32_t> to_destroy =
            static_cast<::fidl::tracking_ptr<int32_t>>(
                std::move(envelope_.data));
        break;
      }
      case 2: {
        ::fidl::tracking_ptr<float> to_destroy =
            static_cast<::fidl::tracking_ptr<float>>(std::move(envelope_.data));
        break;
      }
    }

    envelope_.data = std::move(new_ptr);
  }

  static void SizeAndOffsetAssertionHelper();
  Ordinal ordinal_;
  FIDL_ALIGNDECL
  ::fidl::Envelope<void> envelope_;
};

extern "C" const fidl_type_t fidl_test_nullable_StructWithNullableVectorTable;

struct StructWithNullableVector {
  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_StructWithNullableVectorTable;
  static constexpr uint32_t MaxNumHandles = 0;
  static constexpr uint32_t PrimarySize = 16;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 4294967295;
  static constexpr bool HasPointer = true;
  static constexpr bool IsResource = false;

  ::fidl::VectorView<int32_t> val = {};
};

extern "C" const fidl_type_t fidl_test_nullable_StructWithNullableUnionTable;

struct StructWithNullableUnion {
  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_StructWithNullableUnionTable;
  static constexpr uint32_t MaxNumHandles = 0;
  static constexpr uint32_t PrimarySize = 24;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 8;
  static constexpr bool HasPointer = true;
  static constexpr bool IsResource = false;

  ::llcpp::fidl::test::nullable::SimpleUnion val = {};
};

extern "C" const fidl_type_t fidl_test_nullable_StructWithNullableStructTable;

struct StructWithNullableStruct {
  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_StructWithNullableStructTable;
  static constexpr uint32_t MaxNumHandles = 0;
  static constexpr uint32_t PrimarySize = 8;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 8;
  static constexpr bool HasPointer = true;
  static constexpr bool IsResource = false;

  ::fidl::tracking_ptr<::llcpp::fidl::test::nullable::Int32Wrapper> val = {};
};

extern "C" const fidl_type_t fidl_test_nullable_StructWithNullableStringTable;

struct StructWithNullableString {
  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_StructWithNullableStringTable;
  static constexpr uint32_t MaxNumHandles = 0;
  static constexpr uint32_t PrimarySize = 16;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 4294967295;
  static constexpr bool HasPointer = true;
  static constexpr bool IsResource = false;

  ::fidl::StringView val = {};
};

extern "C" const fidl_type_t fidl_test_nullable_StructWithNullableRequestTable;

struct StructWithNullableRequest {
  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_StructWithNullableRequestTable;
  static constexpr uint32_t MaxNumHandles = 1;
  static constexpr uint32_t PrimarySize = 4;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 0;
  static constexpr bool HasPointer = false;
  static constexpr bool IsResource = true;

  ::zx::channel val = {};
};

extern "C" const fidl_type_t fidl_test_nullable_StructWithNullableProtocolTable;

struct StructWithNullableProtocol {
  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_StructWithNullableProtocolTable;
  static constexpr uint32_t MaxNumHandles = 1;
  static constexpr uint32_t PrimarySize = 4;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 0;
  static constexpr bool HasPointer = false;
  static constexpr bool IsResource = true;

  ::zx::channel val = {};
};

extern "C" const fidl_type_t fidl_test_nullable_StructWithNullableHandleTable;

struct StructWithNullableHandle {
  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_StructWithNullableHandleTable;
  static constexpr uint32_t MaxNumHandles = 1;
  static constexpr uint32_t PrimarySize = 4;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 0;
  static constexpr bool HasPointer = false;
  static constexpr bool IsResource = true;

  ::zx::vmo val = {};
};

extern "C" const fidl_type_t fidl_test_nullable_SimpleProtocolAddRequestTable;
extern "C" const fidl_type_t fidl_test_nullable_SimpleProtocolAddResponseTable;

class SimpleProtocol final {
  SimpleProtocol() = delete;

 public:
  struct AddResponse final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    int32_t sum;
    explicit AddResponse(int32_t sum) : sum(sum) { _InitHeader(); }
    AddResponse() { _InitHeader(); }

    static constexpr const fidl_type_t* Type =
        &fidl_test_nullable_SimpleProtocolAddResponseTable;
    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;

   private:
    void _InitHeader();
  };
  struct AddRequest final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    int32_t a;
    int32_t b;
    explicit AddRequest(zx_txid_t _txid, int32_t a, int32_t b) : a(a), b(b) {
      _InitHeader(_txid);
    }
    explicit AddRequest(zx_txid_t _txid) { _InitHeader(_txid); }

    static constexpr const fidl_type_t* Type =
        &fidl_test_nullable_SimpleProtocolAddRequestTable;
    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 = AddResponse;

   private:
    void _InitHeader(zx_txid_t _txid);
  };

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

   public:
    class Add final : public ::fidl::Result {
     public:
      explicit Add(zx_handle_t _client, int32_t a, int32_t b);
      explicit Add(const ::fidl::Result& result) : ::fidl::Result(result) {}
      Add(Add&&) = delete;
      Add(const Add&) = delete;
      Add* operator=(Add&&) = delete;
      Add* operator=(const Add&) = delete;
      ~Add() = default;

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

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

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

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

     private:
      FIDL_ALIGNDECL
      uint8_t bytes_[AddResponse::PrimarySize + AddResponse::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 Add final : public ::fidl::Result {
     public:
      explicit Add(zx_handle_t _client, uint8_t* _request_bytes,
                   uint32_t _request_byte_capacity, int32_t a, int32_t b,
                   uint8_t* _response_bytes, uint32_t _response_byte_capacity);
      explicit Add(const ::fidl::Result& result) : ::fidl::Result(result) {}
      Add(Add&&) = delete;
      Add(const Add&) = delete;
      Add* operator=(Add&&) = delete;
      Add* operator=(const Add&) = delete;
      ~Add() = default;

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

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

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

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

     private:
      uint8_t* bytes_;
    };
  };

  class AddUnownedResponse final {
   public:
    AddUnownedResponse(uint8_t* _bytes, uint32_t _byte_size, int32_t sum)
        : message_(_bytes, _byte_size, sizeof(AddResponse), 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(AddResponse)];
      auto& _response = *new (_response_buffer) AddResponse(sum);
      message_.LinearizeAndEncode(AddResponse::Type, &_response);
    }

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

    ::fidl::internal::FidlMessage& GetFidlMessage() { return message_; }

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

   private:
    AddResponse& Message() {
      return *reinterpret_cast<AddResponse*>(message_.bytes().data());
    }
    ::fidl::internal::FidlMessage message_;
  };

  class AddOwnedResponse final {
   public:
    explicit AddOwnedResponse(int32_t sum)
        : message_(bytes_, sizeof(bytes_), sum) {}

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

    ::fidl::internal::FidlMessage& GetFidlMessage() {
      return message_.GetFidlMessage();
    }

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

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

  class AddUnownedRequest final {
   public:
    AddUnownedRequest(uint8_t* _bytes, uint32_t _byte_size, zx_txid_t _txid,
                      int32_t a, int32_t b)
        : message_(_bytes, _byte_size, sizeof(AddRequest), 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(AddRequest)];
      auto& _request = *new (_request_buffer) AddRequest(_txid, a, b);
      message_.LinearizeAndEncode(AddRequest::Type, &_request);
    }

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

    ::fidl::internal::FidlMessage& GetFidlMessage() { return message_; }

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

   private:
    AddRequest& Message() {
      return *reinterpret_cast<AddRequest*>(message_.bytes().data());
    }
    ::fidl::internal::FidlMessage message_;
  };

  class AddOwnedRequest final {
   public:
    explicit AddOwnedRequest(zx_txid_t _txid, int32_t a, int32_t b)
        : message_(bytes_, sizeof(bytes_), _txid, a, b) {}

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

    ::fidl::internal::FidlMessage& GetFidlMessage() {
      return message_.GetFidlMessage();
    }

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

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

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

   public:
    // Allocates 48 bytes of message buffer on the stack. No heap allocation
    // necessary.
    static ResultOf::Add Add(::zx::unowned_channel _client_end, int32_t a,
                             int32_t b) {
      return ResultOf::Add(_client_end->get(), a, b);
    }

    // Caller provides the backing storage for FIDL message via request and
    // response buffers.
    static UnownedResultOf::Add Add(::zx::unowned_channel _client_end,
                                    ::fidl::BytePart _request_buffer, int32_t a,
                                    int32_t b,
                                    ::fidl::BytePart _response_buffer) {
      return UnownedResultOf::Add(_client_end->get(), _request_buffer.data(),
                                  _request_buffer.capacity(), a, b,
                                  _response_buffer.data(),
                                  _response_buffer.capacity());
    }
  };

  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 48 bytes of message buffer on the stack. No heap allocation
    // necessary.
    ResultOf::Add Add(int32_t a, int32_t b) {
      return ResultOf::Add(this->channel().get(), a, b);
    }

    // Caller provides the backing storage for FIDL message via request and
    // response buffers.
    UnownedResultOf::Add Add(::fidl::BytePart _request_buffer, int32_t a,
                             int32_t b, ::fidl::BytePart _response_buffer) {
      return UnownedResultOf::Add(this->channel().get(), _request_buffer.data(),
                                  _request_buffer.capacity(), a, b,
                                  _response_buffer.data(),
                                  _response_buffer.capacity());
    }

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

  struct AsyncEventHandlers;
  class AddResponseContext;
  class ClientImpl;

  // Pure-virtual interface to be implemented by a server.
  class Interface {
   public:
    Interface() = default;
    virtual ~Interface() = default;
    using _Outer = SimpleProtocol;
    using _Base = ::fidl::CompleterBase;

    class AddCompleterBase : public _Base {
     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(int32_t sum);
      ::fidl::Result Reply(::fidl::BytePart _buffer, int32_t sum);

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

    using AddCompleter = ::fidl::Completer<AddCompleterBase>;

    virtual void Add(int32_t a, int32_t b, AddCompleter::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 bool TryDispatch(Interface* impl, fidl_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 bool Dispatch(Interface* impl, fidl_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 bool TypeErasedDispatch(void* impl, fidl_msg_t* msg,
                                 ::fidl::Transaction* txn) {
    return Dispatch(static_cast<Interface*>(impl), msg, txn);
  }

  class EventSender;
};

extern "C" const fidl_type_t fidl_test_nullable_Int32WrapperTable;

struct Int32Wrapper {
  static constexpr const fidl_type_t* Type =
      &fidl_test_nullable_Int32WrapperTable;
  static constexpr uint32_t MaxNumHandles = 0;
  static constexpr uint32_t PrimarySize = 4;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 0;
  static constexpr bool HasPointer = false;
  static constexpr bool IsResource = false;

  int32_t val = {};
};

}  // namespace nullable
}  // namespace test
}  // namespace fidl
}  // namespace llcpp

namespace fidl {

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

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

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

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

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

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

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

template <>
struct IsFidlType<::llcpp::fidl::test::nullable::SimpleProtocol::AddRequest>
    : public std::true_type {};
template <>
struct IsFidlMessage<::llcpp::fidl::test::nullable::SimpleProtocol::AddRequest>
    : public std::true_type {};
static_assert(
    sizeof(::llcpp::fidl::test::nullable::SimpleProtocol::AddRequest) ==
    ::llcpp::fidl::test::nullable::SimpleProtocol::AddRequest::PrimarySize);
static_assert(
    offsetof(::llcpp::fidl::test::nullable::SimpleProtocol::AddRequest, a) ==
    16);
static_assert(
    offsetof(::llcpp::fidl::test::nullable::SimpleProtocol::AddRequest, b) ==
    20);

template <>
struct IsFidlType<::llcpp::fidl::test::nullable::SimpleProtocol::AddResponse>
    : public std::true_type {};
template <>
struct IsFidlMessage<::llcpp::fidl::test::nullable::SimpleProtocol::AddResponse>
    : public std::true_type {};
static_assert(
    sizeof(::llcpp::fidl::test::nullable::SimpleProtocol::AddResponse) ==
    ::llcpp::fidl::test::nullable::SimpleProtocol::AddResponse::PrimarySize);
static_assert(
    offsetof(::llcpp::fidl::test::nullable::SimpleProtocol::AddResponse, sum) ==
    16);

template <>
struct IsFidlType<::llcpp::fidl::test::nullable::SimpleUnion>
    : public std::true_type {};
template <>
struct IsUnion<::llcpp::fidl::test::nullable::SimpleUnion>
    : public std::true_type {};
static_assert(
    std::is_standard_layout_v<::llcpp::fidl::test::nullable::SimpleUnion>);

template <>
struct IsFidlType<::llcpp::fidl::test::nullable::Int32Wrapper>
    : public std::true_type {};
template <>
struct IsStruct<::llcpp::fidl::test::nullable::Int32Wrapper>
    : public std::true_type {};
static_assert(
    std::is_standard_layout_v<::llcpp::fidl::test::nullable::Int32Wrapper>);
static_assert(offsetof(::llcpp::fidl::test::nullable::Int32Wrapper, val) == 0);
static_assert(sizeof(::llcpp::fidl::test::nullable::Int32Wrapper) ==
              ::llcpp::fidl::test::nullable::Int32Wrapper::PrimarySize);

}  // namespace fidl

namespace llcpp {

namespace fidl {
namespace test {
namespace nullable {

struct SimpleProtocol::AsyncEventHandlers {};

class SimpleProtocol::AddResponseContext
    : public ::fidl::internal::ResponseContext {
 public:
  AddResponseContext();

  virtual void OnReply(SimpleProtocol::AddResponse* message) = 0;

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

class SimpleProtocol::ClientImpl final : private ::fidl::internal::ClientBase {
 public:
  // Asynchronous variant of |SimpleProtocol.Add()|. Allocates 24 bytes of
  // request buffer on the stack. The callback is stored on the heap.
  ::fidl::Result Add(int32_t a, int32_t b,
                     ::fit::callback<void(int32_t sum)> _cb);
  // Asynchronous variant of |SimpleProtocol.Add()|. 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 Add(::fidl::BytePart _request_buffer, int32_t a, int32_t b,
                     AddResponseContext* _context);
  // Synchronous variant of |SimpleProtocol.Add()|. Allocates 48 bytes of
  // message buffer on the stack. No heap allocation necessary.
  ResultOf::Add Add_Sync(int32_t a, int32_t b);

  // Synchronous variant of |SimpleProtocol.Add()|. Caller provides the backing
  // storage for FIDL message via request and response buffers.
  UnownedResultOf::Add Add_Sync(::fidl::BytePart _request_buffer, int32_t a,
                                int32_t b, ::fidl::BytePart _response_buffer);

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

  ClientImpl(::zx::channel client_end, async_dispatcher_t* dispatcher,
             ::fidl::internal::TypeErasedOnUnboundFn on_unbound,
             AsyncEventHandlers handlers)
      : ::fidl::internal::ClientBase(std::move(client_end), dispatcher,
                                     std::move(on_unbound)),
        handlers_(std::move(handlers)) {}

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

  AsyncEventHandlers handlers_;
};

class SimpleProtocol::EventSender {
 public:
 private:
  friend class ::fidl::ServerBindingRef<SimpleProtocol>;

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

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

}  // namespace nullable
}  // namespace test
}  // namespace fidl
}  // namespace llcpp