This library is using concept called MessageDescriptor instead of proto file. MessageDescriptor let you describe object for serialization more flexibly than proto file. It let you use specific features of C#, for example values of type Nullable<T> which may not be put in buffer if they are NULL.
Declaration of classes:
public class Person
{
public int Age;
public int Height;
public double Weight;
public string Name;
public string Phone;
}
public class Room
{
public int Capacity;
public string Name;
public List<Person> People = new List<Person>();
}Creating message descriptors:
// Person descriptor
var personDescr = MessageDescriptorBuilder.New<Person>()
.Int32(1, x => x.Age, (x, y) => x.Age = y)
.Int32(2, x => x.Height, (x, y) => x.Height = y)
.Double(3, x => x.Weight, (x, y) => x.Weight = y)
.String(4, x => x.Name, (x, y) => x.Name = y)
.String(5, x => x.Phone, (x, y) => x.Phone = y, x => x.Phone != null)
.CreateDescriptor();
// Room descriptor
var roomDescr = MessageDescriptorBuilder.New<Room>()
.Int32(1, x => x.Capacity, (x, y) => x.Capacity = y)
.String(2, x => x.Name, (x, y) => x.Name = y)
.MessageArray(3, x => x.People, (x, y) => x.People.Add(y), Person.CreateDescriptor())
.CreateDescriptor();Serialization and deserialization:
Room room = new Room()
{
Capacity = 10,
Name = "Restroom"
};
room.People.Add(new Person() { Age = 28, Height = 167, Weight = 65.6, Name = "John", Phone = "123-45-67" });
room.People.Add(new Person() { Age = 44, Height = 170, Weight = 85, Name = "Peter" });
room.People.Add(new Person() { Age = 33, Height = 160, Weight = 53.2, Name = "Ann", Phone = "111-22-33" });
// serialization
byte[] buff = roomDescr.Write(room);
// deserialization
Room r = roomDescr.Read(buff);