tools/fidl/fidlgen_llcpp/goldens/placement_of_attributes.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 <exampleusing/llcpp/fidl.h>
#include <zircon/fidl.h>

namespace llcpp {

namespace fidl {
namespace test {
namespace placementofattributes {

class ExampleXUnion;
class ExampleUnion;
class ExampleTable;
struct ExampleStruct;

enum class ExampleEnum : uint32_t {

  MEMBER = 1u,
};

// |ExampleBits| is strict, hence is guaranteed to only contain
// members defined in the FIDL schema when receiving it in a message.
// Sending unknown members will fail at runtime.
class ExampleBits final {
 public:
  constexpr ExampleBits() = default;
  constexpr ExampleBits(const ExampleBits& other) = default;

  // Constructs an instance of |ExampleBits| from an underlying primitive value,
  // preserving any bit member not defined in the FIDL schema.
  explicit constexpr ExampleBits(uint32_t value) : value_(value) {}
  const static ExampleBits MEMBER;
  const static ExampleBits kMask;

  explicit constexpr inline operator uint32_t() const { return value_; }
  explicit constexpr inline operator bool() const {
    return static_cast<bool>(value_);
  }
  constexpr inline bool operator==(const ExampleBits& other) const {
    return value_ == other.value_;
  }
  constexpr inline bool operator!=(const ExampleBits& other) const {
    return value_ != other.value_;
  }
  constexpr inline ExampleBits operator~() const;
  constexpr inline ExampleBits operator|(const ExampleBits& other) const;
  constexpr inline ExampleBits operator&(const ExampleBits& other) const;
  constexpr inline ExampleBits operator^(const ExampleBits& other) const;
  constexpr inline void operator|=(const ExampleBits& other);
  constexpr inline void operator&=(const ExampleBits& other);
  constexpr inline void operator^=(const ExampleBits& other);

  // Constructs an instance of |ExampleBits| from an underlying primitive value
  // if the primitive does not contain any unknown members not defined in the
  // FIDL schema. Otherwise, returns |fit::nullopt|.
  constexpr inline static fit::optional<ExampleBits> TryFrom(uint32_t value) {
    if (value & ~kMask.value_) {
      return fit::nullopt;
    }
    return ExampleBits(value & ExampleBits::kMask.value_);
  }

  // Constructs an instance of |ExampleBits| from an underlying primitive value,
  // clearing any bit member not defined in the FIDL schema.
  constexpr inline static ExampleBits TruncatingUnknown(uint32_t value) {
    return ExampleBits(value & ExampleBits::kMask.value_);
  }

 private:
  uint32_t value_ = 0;
};
constexpr const ::llcpp::fidl::test::placementofattributes::ExampleBits
    ExampleBits::MEMBER =
        ::llcpp::fidl::test::placementofattributes::ExampleBits(1u);
constexpr const ::llcpp::fidl::test::placementofattributes::ExampleBits
    ExampleBits::kMask =
        ::llcpp::fidl::test::placementofattributes::ExampleBits(1u);

constexpr inline ::llcpp::fidl::test::placementofattributes::ExampleBits
ExampleBits::operator~() const {
  return ::llcpp::fidl::test::placementofattributes::ExampleBits(
      static_cast<uint32_t>(~this->value_ & kMask.value_));
}

constexpr inline ::llcpp::fidl::test::placementofattributes::ExampleBits
ExampleBits::operator|(
    const ::llcpp::fidl::test::placementofattributes::ExampleBits& other)
    const {
  return ::llcpp::fidl::test::placementofattributes::ExampleBits(
      static_cast<uint32_t>(this->value_ | other.value_));
}

constexpr inline ::llcpp::fidl::test::placementofattributes::ExampleBits
ExampleBits::operator&(
    const ::llcpp::fidl::test::placementofattributes::ExampleBits& other)
    const {
  return ::llcpp::fidl::test::placementofattributes::ExampleBits(
      static_cast<uint32_t>(this->value_ & other.value_));
}

constexpr inline ::llcpp::fidl::test::placementofattributes::ExampleBits
ExampleBits::operator^(
    const ::llcpp::fidl::test::placementofattributes::ExampleBits& other)
    const {
  return ::llcpp::fidl::test::placementofattributes::ExampleBits(
      static_cast<uint32_t>(this->value_ ^ other.value_));
}

constexpr inline void ExampleBits::operator|=(
    const ::llcpp::fidl::test::placementofattributes::ExampleBits& other) {
  this->value_ |= other.value_;
}

constexpr inline void ExampleBits::operator&=(
    const ::llcpp::fidl::test::placementofattributes::ExampleBits& other) {
  this->value_ &= other.value_;
}

constexpr inline void ExampleBits::operator^=(
    const ::llcpp::fidl::test::placementofattributes::ExampleBits& other) {
  this->value_ ^= other.value_;
}

class ExampleProtocol;

extern "C" const fidl_type_t fidl_test_placementofattributes_ExampleXUnionTable;

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

  ExampleXUnion(ExampleXUnion&&) = default;
  ExampleXUnion& operator=(ExampleXUnion&&) = default;

  ~ExampleXUnion() { reset_ptr(nullptr); }

  enum class Tag : fidl_xunion_tag_t {
    kVariant = 1,  // 0x1
    kUnknown = ::std::numeric_limits<::fidl_union_tag_t>::max(),
  };

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

  bool is_variant() const { return ordinal_ == Ordinal::kVariant; }

  static ExampleXUnion WithVariant(::fidl::tracking_ptr<uint32_t>&& val) {
    ExampleXUnion result;
    result.set_variant(std::move(val));
    return result;
  }

  void set_variant(::fidl::tracking_ptr<uint32_t>&& elem) {
    ordinal_ = Ordinal::kVariant;
    reset_ptr(static_cast<::fidl::tracking_ptr<void>>(std::move(elem)));
  }

  uint32_t& mutable_variant() {
    ZX_ASSERT(ordinal_ == Ordinal::kVariant);
    return *static_cast<uint32_t*>(envelope_.data.get());
  }
  const uint32_t& variant() const {
    ZX_ASSERT(ordinal_ == Ordinal::kVariant);
    return *static_cast<uint32_t*>(envelope_.data.get());
  }
  Tag which() const;

  static constexpr const fidl_type_t* Type =
      &fidl_test_placementofattributes_ExampleXUnionTable;
  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;

 private:
  enum class Ordinal : fidl_xunion_tag_t {
    Invalid = 0,
    kVariant = 1,  // 0x1
  };

  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<uint32_t> to_destroy =
            static_cast<::fidl::tracking_ptr<uint32_t>>(
                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_placementofattributes_ExampleUnionTable;

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

  ExampleUnion(ExampleUnion&&) = default;
  ExampleUnion& operator=(ExampleUnion&&) = default;

  ~ExampleUnion() { reset_ptr(nullptr); }

  enum class Tag : fidl_xunion_tag_t {
    kVariant = 1,  // 0x1
  };

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

  bool is_variant() const { return ordinal_ == Ordinal::kVariant; }

  static ExampleUnion WithVariant(::fidl::tracking_ptr<uint32_t>&& val) {
    ExampleUnion result;
    result.set_variant(std::move(val));
    return result;
  }

  void set_variant(::fidl::tracking_ptr<uint32_t>&& elem) {
    ordinal_ = Ordinal::kVariant;
    reset_ptr(static_cast<::fidl::tracking_ptr<void>>(std::move(elem)));
  }

  uint32_t& mutable_variant() {
    ZX_ASSERT(ordinal_ == Ordinal::kVariant);
    return *static_cast<uint32_t*>(envelope_.data.get());
  }
  const uint32_t& variant() const {
    ZX_ASSERT(ordinal_ == Ordinal::kVariant);
    return *static_cast<uint32_t*>(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_placementofattributes_ExampleUnionTable;
  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;

 private:
  enum class Ordinal : fidl_xunion_tag_t {
    Invalid = 0,
    kVariant = 1,  // 0x1
  };

  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<uint32_t> to_destroy =
            static_cast<::fidl::tracking_ptr<uint32_t>>(
                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_placementofattributes_ExampleTableTable;

class ExampleTable final {
 public:
  // Returns whether no field is set.
  bool IsEmpty() const { return max_ordinal_ == 0; }

  const uint32_t& member() const {
    ZX_ASSERT(has_member());
    return *frame_ptr_->member_.data;
  }
  uint32_t& member() {
    ZX_ASSERT(has_member());
    return *frame_ptr_->member_.data;
  }
  bool has_member() const {
    return max_ordinal_ >= 1 && frame_ptr_->member_.data != nullptr;
  }

  ExampleTable() = default;
  ~ExampleTable() = default;
  ExampleTable(ExampleTable&& other) noexcept = default;
  ExampleTable& operator=(ExampleTable&& other) noexcept = default;

  static constexpr const fidl_type_t* Type =
      &fidl_test_placementofattributes_ExampleTableTable;
  static constexpr uint32_t MaxNumHandles = 0;
  static constexpr uint32_t PrimarySize = 16;
  [[maybe_unused]] static constexpr uint32_t MaxOutOfLine = 24;
  static constexpr bool HasPointer = true;

  class UnownedEncodedMessage final {
   public:
    UnownedEncodedMessage(uint8_t* bytes, uint32_t byte_size,
                          ExampleTable* value)
        : message_(bytes, byte_size, sizeof(ExampleTable), nullptr, 0, 0) {
      message_.LinearizeAndEncode<ExampleTable>(value);
    }
    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_; }

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

  class OwnedEncodedMessage final {
   public:
    explicit OwnedEncodedMessage(ExampleTable* value)
        : message_(bytes_, sizeof(bytes_), value) {}
    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();
    }

   private:
    FIDL_ALIGNDECL
    uint8_t bytes_[FIDL_ALIGN(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<ExampleTable>();
    }
    DecodedMessage(fidl_incoming_msg_t* msg)
        : ::fidl::internal::IncomingMessage(msg) {
      Decode<ExampleTable>();
    }
    DecodedMessage(const DecodedMessage&) = delete;
    DecodedMessage(DecodedMessage&&) = delete;
    DecodedMessage* operator=(const DecodedMessage&) = delete;
    DecodedMessage* operator=(DecodedMessage&&) = delete;

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

  class Builder;
  class UnownedBuilder;

  class Frame final {
   public:
    Frame() = default;
    // In its intended usage, Frame will be referenced by a tracking_ptr. If the
    // tracking_ptr is assigned before a move or copy, then it will reference
    // the old invalid object. Because this is unsafe, copies are disallowed and
    // moves are only allowed by friend classes that operate safely.
    Frame(const Frame&) = delete;
    Frame& operator=(const Frame&) = delete;

   private:
    Frame(Frame&&) noexcept = default;
    Frame& operator=(Frame&&) noexcept = default;
    ::fidl::Envelope<uint32_t> member_;

    friend class ExampleTable;
    friend class ExampleTable::Builder;
    friend class ExampleTable::UnownedBuilder;
  };

 private:
  ExampleTable(uint64_t max_ordinal, ::fidl::tracking_ptr<Frame>&& frame_ptr)
      : max_ordinal_(max_ordinal), frame_ptr_(std::move(frame_ptr)) {}
  uint64_t max_ordinal_ = 0;
  ::fidl::tracking_ptr<Frame> frame_ptr_;
};

// ExampleTable::Builder builds ExampleTable.
// Usage:
// ExampleTable val =
// ExampleTable::Builder(std::make_unique<ExampleTable::Frame>())
// .set_member(ptr)
// .build();
class ExampleTable::Builder final {
 public:
  ~Builder() = default;
  Builder() = delete;
  Builder(::fidl::tracking_ptr<ExampleTable::Frame>&& frame_ptr)
      : max_ordinal_(0), frame_ptr_(std::move(frame_ptr)) {}

  Builder(Builder&& other) noexcept = default;
  Builder& operator=(Builder&& other) noexcept = default;

  Builder(const Builder& other) = delete;
  Builder& operator=(const Builder& other) = delete;

  // Returns whether no field is set.
  bool IsEmpty() const { return max_ordinal_ == 0; }

  Builder&& set_member(::fidl::tracking_ptr<uint32_t> elem) {
    frame_ptr_->member_.data = std::move(elem);
    if (max_ordinal_ < 1) {
      // Note: the table size is not currently reduced if nullptr is set.
      // This is possible to reconsider in the future.
      max_ordinal_ = 1;
    }
    return std::move(*this);
  }
  const uint32_t& member() const {
    ZX_ASSERT(has_member());
    return *frame_ptr_->member_.data;
  }
  uint32_t& member() {
    ZX_ASSERT(has_member());
    return *frame_ptr_->member_.data;
  }
  bool has_member() const {
    return max_ordinal_ >= 1 && frame_ptr_->member_.data != nullptr;
  }

  ExampleTable build() {
    return ExampleTable(max_ordinal_, std::move(frame_ptr_));
  }

 private:
  uint64_t max_ordinal_ = 0;
  ::fidl::tracking_ptr<ExampleTable::Frame> frame_ptr_;
};

// UnownedBuilder acts like Builder but directly owns its Frame, simplifying
// working with unowned data.
class ExampleTable::UnownedBuilder final {
 public:
  ~UnownedBuilder() = default;
  UnownedBuilder() noexcept = default;
  UnownedBuilder(UnownedBuilder&& other) noexcept = default;
  UnownedBuilder& operator=(UnownedBuilder&& other) noexcept = default;

  // Returns whether no field is set.
  bool IsEmpty() const { return max_ordinal_ == 0; }

  UnownedBuilder&& set_member(::fidl::tracking_ptr<uint32_t> elem) {
    ZX_ASSERT(elem);
    frame_.member_.data = std::move(elem);
    if (max_ordinal_ < 1) {
      max_ordinal_ = 1;
    }
    return std::move(*this);
  }
  const uint32_t& member() const {
    ZX_ASSERT(has_member());
    return *frame_.member_.data;
  }
  uint32_t& member() {
    ZX_ASSERT(has_member());
    return *frame_.member_.data;
  }
  bool has_member() const {
    return max_ordinal_ >= 1 && frame_.member_.data != nullptr;
  }

  ExampleTable build() {
    return ExampleTable(max_ordinal_, ::fidl::unowned_ptr(&frame_));
  }

 private:
  uint64_t max_ordinal_ = 0;
  ExampleTable::Frame frame_;
};

extern "C" const fidl_type_t fidl_test_placementofattributes_ExampleStructTable;

struct ExampleStruct {
  static constexpr const fidl_type_t* Type =
      &fidl_test_placementofattributes_ExampleStructTable;
  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;

  uint32_t member = {};

  class UnownedEncodedMessage final {
   public:
    UnownedEncodedMessage(uint8_t* bytes, uint32_t byte_size,
                          ExampleStruct* value)
        : message_(bytes, byte_size, sizeof(ExampleStruct), nullptr, 0, 0) {
      message_.LinearizeAndEncode<ExampleStruct>(value);
    }
    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_; }

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

  class OwnedEncodedMessage final {
   public:
    explicit OwnedEncodedMessage(ExampleStruct* value)
        : message_(bytes_, sizeof(bytes_), value) {}
    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();
    }

   private:
    FIDL_ALIGNDECL
    uint8_t bytes_[FIDL_ALIGN(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<struct ExampleStruct>();
    }
    DecodedMessage(fidl_incoming_msg_t* msg)
        : ::fidl::internal::IncomingMessage(msg) {
      Decode<struct ExampleStruct>();
    }
    DecodedMessage(const DecodedMessage&) = delete;
    DecodedMessage(DecodedMessage&&) = delete;
    DecodedMessage* operator=(const DecodedMessage&) = delete;
    DecodedMessage* operator=(DecodedMessage&&) = delete;

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

constexpr uint32_t EXAMPLE_CONST = 0u;

extern "C" const fidl_type_t
    fidl_test_placementofattributes_ExampleProtocolMethodRequestTable;
extern "C" const fidl_type_t
    fidl_test_placementofattributes_ExampleProtocolMethodResponseTable;

class ExampleProtocol final {
  ExampleProtocol() = delete;

 public:
  struct MethodRequest final {
    FIDL_ALIGNDECL
    fidl_message_header_t _hdr;
    ::llcpp::exampleusing::Empty arg;
    explicit MethodRequest(zx_txid_t _txid, ::llcpp::exampleusing::Empty& arg)
        : arg(std::move(arg)) {
      _InitHeader(_txid);
    }
    explicit MethodRequest(zx_txid_t _txid) { _InitHeader(_txid); }

    static constexpr const fidl_type_t* Type =
        &fidl_test_placementofattributes_ExampleProtocolMethodRequestTable;
    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 ::fidl::internal::TransactionalMessageKind MessageKind =
        ::fidl::internal::TransactionalMessageKind::kRequest;

    class UnownedEncodedMessage final {
     public:
      UnownedEncodedMessage(uint8_t* _bytes, uint32_t _byte_size,
                            zx_txid_t _txid, ::llcpp::exampleusing::Empty& arg)
          : message_(_bytes, _byte_size, sizeof(MethodRequest), nullptr, 0, 0) {
        FIDL_ALIGNDECL MethodRequest _request(_txid, arg);
        message_.LinearizeAndEncode<MethodRequest>(&_request);
      }
      UnownedEncodedMessage(uint8_t* bytes, uint32_t byte_size,
                            MethodRequest* request)
          : message_(bytes, byte_size, sizeof(MethodRequest), nullptr, 0, 0) {
        message_.LinearizeAndEncode<MethodRequest>(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:
      MethodRequest& Message() {
        return *reinterpret_cast<MethodRequest*>(message_.bytes());
      }
      ::fidl::OutgoingMessage message_;
    };

    class OwnedEncodedMessage final {
     public:
      explicit OwnedEncodedMessage(zx_txid_t _txid,
                                   ::llcpp::exampleusing::Empty& arg)
          : message_(bytes_, sizeof(bytes_), _txid, arg) {}
      explicit OwnedEncodedMessage(MethodRequest* 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<MethodRequest>();
      }
      DecodedMessage(fidl_incoming_msg_t* msg)
          : ::fidl::internal::IncomingMessage(msg) {
        Decode<MethodRequest>();
      }
      DecodedMessage(const DecodedMessage&) = delete;
      DecodedMessage(DecodedMessage&&) = delete;
      DecodedMessage* operator=(const DecodedMessage&) = delete;
      DecodedMessage* operator=(DecodedMessage&&) = delete;

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

   private:
    void _InitHeader(zx_txid_t _txid);
  };

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

   public:
    class Method final : public ::fidl::Result {
     public:
      explicit Method(zx_handle_t _client, ::llcpp::exampleusing::Empty& arg);
      explicit Method(const ::fidl::Result& result) : ::fidl::Result(result) {}
      Method(Method&&) = delete;
      Method(const Method&) = delete;
      Method* operator=(Method&&) = delete;
      Method* operator=(const Method&) = delete;
      ~Method() = 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 Method final : public ::fidl::Result {
     public:
      explicit Method(zx_handle_t _client, uint8_t* _request_bytes,
                      uint32_t _request_byte_capacity,
                      ::llcpp::exampleusing::Empty& arg);
      explicit Method(const ::fidl::Result& result) : ::fidl::Result(result) {}
      Method(Method&&) = delete;
      Method(const Method&) = delete;
      Method* operator=(Method&&) = delete;
      Method* operator=(const Method&) = delete;
      ~Method() = 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 24 bytes of message buffer on the stack. No heap allocation
    // necessary.
    static ResultOf::Method Method(::zx::unowned_channel _client_end,
                                   ::llcpp::exampleusing::Empty arg) {
      return ResultOf::Method(_client_end->get(), arg);
    }

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

  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::Method Method(::llcpp::exampleusing::Empty arg) {
      return ResultOf::Method(this->channel().get(), arg);
    }

    // Caller provides the backing storage for FIDL message via request and
    // response buffers.
    UnownedResultOf::Method Method(::fidl::BufferSpan _request_buffer,
                                   ::llcpp::exampleusing::Empty arg) {
      return UnownedResultOf::Method(this->channel().get(),
                                     _request_buffer.data,
                                     _request_buffer.capacity, arg);
    }

   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 = ExampleProtocol;

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

    virtual void Method(::llcpp::exampleusing::Empty arg,
                        MethodCompleter::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;
};

}  // namespace placementofattributes
}  // namespace test
}  // namespace fidl
}  // namespace llcpp

namespace fidl {

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

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

template <>
struct IsFidlType<::llcpp::fidl::test::placementofattributes::ExampleTable>
    : public std::true_type {};
template <>
struct IsTable<::llcpp::fidl::test::placementofattributes::ExampleTable>
    : public std::true_type {};
template <>
struct IsTableBuilder<
    ::llcpp::fidl::test::placementofattributes::ExampleTable::Builder>
    : public std::true_type {};
static_assert(std::is_standard_layout_v<
              ::llcpp::fidl::test::placementofattributes::ExampleTable>);

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

template <>
struct IsFidlType<::llcpp::fidl::test::placementofattributes::ExampleEnum>
    : public std::true_type {};

template <>
struct IsFidlType<::llcpp::fidl::test::placementofattributes::ExampleBits>
    : public std::true_type {};
static_assert(std::is_standard_layout_v<
              ::llcpp::fidl::test::placementofattributes::ExampleBits>);
static_assert(sizeof(::llcpp::fidl::test::placementofattributes::ExampleBits) ==
              sizeof(uint32_t));

template <>
struct IsFidlType<
    ::llcpp::fidl::test::placementofattributes::ExampleProtocol::MethodRequest>
    : public std::true_type {};
template <>
struct IsFidlMessage<
    ::llcpp::fidl::test::placementofattributes::ExampleProtocol::MethodRequest>
    : public std::true_type {};
static_assert(sizeof(::llcpp::fidl::test::placementofattributes::
                         ExampleProtocol::MethodRequest) ==
              ::llcpp::fidl::test::placementofattributes::ExampleProtocol::
                  MethodRequest::PrimarySize);
static_assert(offsetof(::llcpp::fidl::test::placementofattributes::
                           ExampleProtocol::MethodRequest,
                       arg) == 16);

}  // namespace fidl

namespace llcpp {

namespace fidl {
namespace test {
namespace placementofattributes {

struct ExampleProtocol::AsyncEventHandlers {};

class ExampleProtocol::ClientImpl final : private ::fidl::internal::ClientBase {
 public:
  // Allocates 24 bytes of message buffer on the stack. No heap allocation
  // necessary.
  ::fidl::Result Method(::llcpp::exampleusing::Empty arg);

  // Caller provides the backing storage for FIDL message via request and
  // response buffers.
  ::fidl::Result Method(::fidl::BufferSpan _request_buffer,
                        ::llcpp::exampleusing::Empty arg);

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

  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 ExampleProtocol protocol, and can send events in that protocol.
class ExampleProtocol::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 ExampleProtocol::WeakEventSender {
 public:
 private:
  friend class ::fidl::ServerBindingRef<ExampleProtocol>;

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

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

}  // namespace placementofattributes
}  // namespace test
}  // namespace fidl
}  // namespace llcpp