Initial support for generic funcs

Upsilon/BaseTypes/ScriptFunction/ScriptFunction.cs

@@ -2,7 +2,7 @@ using Upsilon.Evaluator;
 
 namespace Upsilon.BaseTypes.ScriptFunction
 {
-    internal abstract class ScriptFunction : ScriptType
+    public abstract class ScriptFunction : ScriptType
     {
         public override Type Type => Type.Function;
         public override object ToCSharpObject()

Upsilon/BaseTypes/ScriptFunction/ScriptGenericFunction.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using Upsilon.Evaluator;
+
+namespace Upsilon.BaseTypes.ScriptFunction
+{
+    public class ScriptGenericFunction : ScriptFunction
+    {
+        public ScriptGenericFunction(Func<object, IEnumerable<object>> function)
+        {
+            Function = function;
+        }
+
+        public ScriptGenericFunction(object o)
+        {
+            var type = o.GetType();
+            var generics = type.GetGenericArguments();
+            Function.GetMethodInfo();
+        }
+
+        public Func<object, IEnumerable<object>> Function { get; }
+
+        public override ScriptType Run(Diagnostics diagnostics, ScriptType[] variables, Script script,
+            EvaluationScope scope)
+        {
+            return Function.Invoke(variables.Select(x => x.ToCSharpObject())).ToScriptType();
+        }
+    }
+}