Class ParsedMessageValue

common/values/parsed_message_value.h:55–219

class Value;

class ParsedMessageValue final
    : private common_internal::StructValueMixin<ParsedMessageValue> {
 public:
  static constexpr ValueKind kKind = ValueKind::kStruct;

  using element_type = const google::protobuf::Message;

  ParsedMessageValue(
      const google::protobuf::Message* absl_nonnull value ABSL_ATTRIBUTE_LIFETIME_BOUND,
      google::protobuf::Arena* absl_nonnull arena ABSL_ATTRIBUTE_LIFETIME_BOUND)
      : value_(value), arena_(arena) {
    ABSL_DCHECK(value != nullptr);
    ABSL_DCHECK(arena != nullptr);
    ABSL_DCHECK(!value_ || !IsWellKnownMessageType(value_->GetDescriptor()))
        << value_->GetTypeName() << " is a well known type";
    ABSL_DCHECK(!value_ || value_->GetReflection() != nullptr)
        << value_->GetTypeName() << " is missing reflection";
    ABSL_DCHECK_OK(CheckArena(value_, arena_));
  }

  // Places the `ParsedMessageValue` into a special state where it is logically
  // equivalent to the default instance of `google.protobuf.Empty`, however
  // dereferencing via `operator*` or `operator->` is not allowed.
  ParsedMessageValue();
  ParsedMessageValue(const ParsedMessageValue&) = default;
  ParsedMessageValue(ParsedMessageValue&&) = default;
  ParsedMessageValue& operator=(const ParsedMessageValue&) = default;
  ParsedMessageValue& operator=(ParsedMessageValue&&) = default;

  static constexpr ValueKind kind() { return kKind; }

  absl::string_view GetTypeName() const { return GetDescriptor()->full_name(); }

  MessageType GetRuntimeType() const { return MessageType(GetDescriptor()); }

  const google::protobuf::Descriptor* absl_nonnull GetDescriptor() const {
    return (*this)->GetDescriptor();
  }

  const google::protobuf::Reflection* absl_nonnull GetReflection() const {
    return (*this)->GetReflection();
  }

  const google::protobuf::Message& operator*() const ABSL_ATTRIBUTE_LIFETIME_BOUND {
    return *value_;
  }

  const google::protobuf::Message* absl_nonnull operator->() const
      ABSL_ATTRIBUTE_LIFETIME_BOUND {
    return value_;
  }

  bool IsZeroValue() const;

  std::string DebugString() const;

  // See Value::SerializeTo().
  absl::Status SerializeTo(