invoke

Esiur/Core/AsyncChunk.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Esiur.Core
+{
+    // This interface is used to provide return type for templates and support chunk callbacks using IAsyncEnumerable feature of C# 8
+    public interface IAsyncChunk<T> : IAsyncEnumerable<object>
+    {
+
+    }
+}

Esiur/Core/InvocationContext.cs

@@ -0,0 +1,31 @@
+using Esiur.Net.IIP;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Esiur.Core
+{
+    public class InvocationContext
+    {
+        private uint CallbackId;
+
+        public void Chunk(object value)
+        {
+
+        }
+
+        public void Progress(int value) { 
+
+        }
+
+        public DistributedConnection Connection { get; internal set; }
+
+
+        internal InvocationContext(DistributedConnection connection, uint callbackId)
+        {
+            Connection = connection;
+            CallbackId = callbackId;
+
+        }
+    }
+}

Esiur/Net/IIP/DistributedConnectionProtocol.cs

@@ -1552,11 +1552,8 @@ partial class DistributedConnection
                  .Done();
             });
 
-            //await t;
-            //SendParams((byte)0x90, callback, Codec.Compose(res, this));
         }
-        else if (rt is AsyncReply)// Codec.ImplementsInterface(rt.GetType(), typeof(IAsyncReply<>)))// rt.GetType().GetTypeInfo().IsGenericType
-                                  //&& rt.GetType().GetGenericTypeDefinition() == typeof(IAsyncReply<>))
+        else if (rt is AsyncReply)
         {
             (rt as AsyncReply).Then(res =>
             {

Esiur/Resource/ExportAttribute.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
+using System.Xml.Linq;
 
 namespace Esiur.Resource;
 
@@ -8,10 +9,29 @@ namespace Esiur.Resource;
 
 public class ExportAttribute : Attribute
 {
-    public string Name { get; set; }
+    public string Name { get; private set; } = null;
+    public Type ReturnType { get; private set; } = null;
 
-    public ExportAttribute(string name = null)
+    public ExportAttribute()
+    {
+
+    }
+
+    public ExportAttribute(string name)
     {
         Name = name;
     }
+
+    public ExportAttribute(Type returnType)
+    {
+        ReturnType = returnType;
+    }
+
+    public ExportAttribute(string name, Type returnType)
+    {
+        Name = name;
+        ReturnType = returnType;
+    }
+
+
 }

Esiur/Resource/Template/FunctionTemplate.cs

@@ -82,9 +82,25 @@ public class FunctionTemplate : MemberTemplate
 
         var genericRtType = mi.ReturnType.IsGenericType ? mi.ReturnType.GetGenericTypeDefinition() : null;
 
-        var rtType = genericRtType == typeof(AsyncReply<>) ?
-                RepresentationType.FromType(mi.ReturnType.GetGenericArguments()[0]) :
-                RepresentationType.FromType(mi.ReturnType);
+        RepresentationType rtType;
+
+        if (genericRtType == typeof(AsyncReply<>))
+        {
+            rtType = RepresentationType.FromType(mi.ReturnType.GetGenericArguments()[0]);
+        }
+        else if (genericRtType == typeof(IEnumerable<>) || genericRtType == typeof(IAsyncEnumerable<>))
+        {
+            // get export
+            rtType = RepresentationType.FromType(mi.GetCustomAttribute<ExportAttribute>()?.ReturnType ?? typeof(object));
+        }
+        else
+        {
+            rtType = RepresentationType.FromType(mi.ReturnType);
+        }
+
+        //var rtType = genericRtType == typeof(AsyncReply<>) ?
+        //        RepresentationType.FromType(mi.ReturnType.GetGenericArguments()[0]) :
+        //        RepresentationType.FromType(mi.ReturnType);
 
         if (rtType == null)
             throw new Exception($"Unsupported type `{mi.ReturnType}` in method `{type.Name}.{mi.Name}` return");

Esiur/Resource/Template/MemberData.cs

@@ -16,10 +16,14 @@ public class MemberData
     public MemberData? Parent;
     public MemberData? Child;
     public byte Index;
+    //public ExportAttribute ExportAttribute;
 
-    public MemberData(string name, MemberInfo info, int order)
+
+    //public string Name => ExportAttribute?.Name ?? Info.Name;
+
+    public MemberData(MemberInfo info, int order)
     {
-        this.Name = name;
+        this.Name = info.GetCustomAttribute<ExportAttribute>()?.Name ?? info.Name;
         this.Info = info;
         this.Order = order;
     }

Esiur/Resource/Template/TypeTemplate.cs

@@ -611,7 +611,6 @@ public class TypeTemplate
                              )
                           ))
                     .Select(x => new MemberData(
-                        name: x.GetCustomAttribute<ExportAttribute>()?.Name ?? x.Name,
                         info: x,
                         order: order
                     ))
@@ -631,7 +630,6 @@ public class TypeTemplate
                     .Where(x => x.GetCustomAttribute<ExportAttribute>() != null)
                     .Where(x => !(x is MethodInfo m && m.IsSpecialName))
                     .Select(x => new MemberData (
-                        name : x.GetCustomAttribute<ExportAttribute>()?.Name ?? x.Name,
                         info : x,
                         order : order
                     ))