public PacketSerializer(IValueSerializerProvider <TPacketWriter> ValueSerializerProvider)
{
var FieldGroups =
(from prop in typeof(TPacket).GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance)
where prop.CanRead
let field = prop.GetCustomAttribute <FieldAttribute>()
where field != null
let option = new FieldOption(prop, field)
let serializer = ValueSerializerProvider.GetValueSerializer(option) ?? throw new NotSupportedException($"找不到字段{option}的值序列化器")
group(serializer, option) by field.Channel ?? "" into g
select(channel: g.Key, fields: g.OrderBy(i => i.option.Order).ToArray())
).ToArray();
var argPacket = Expression.Parameter(typeof(TPacket), "package");
var argWriter = Expression.Parameter(typeof(TPacketWriter), "writer");
FuncSerialize = Expression.Lambda <Action <TPacketWriter, TPacket> >(
Expression.Block(
from grp in FieldGroups
from field in grp.fields
select
Expression.Call(
Expression.Constant(field.serializer),
field.serializer.GetType().GetMethod("Serialize"),
Expression.Property(argPacket, field.option.Property),
argWriter,
Expression.Constant(field.option, typeof(IFieldOption))
)
),
argWriter,
argPacket
).Compile();
}
public ValueSerializerHolder(IValueSerializerProvider provider)
{
this.provider = provider;
}
public ValueSerializer(IValueSerializerProvider provider)
{
this.serializer = HagarGeneratedCodeHelper.UnwrapService(this, provider.GetValueSerializer <TField>());
}
