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  1. using System;
  2. using System.Linq;
  3. using System.Runtime.CompilerServices;
  4. using Microsoft.CSharp.RuntimeBinder; // Requires reference to Microsoft.CSharp
  5.  
  6. public class ImplicitTest
  7. {
  8.     public double Val { get; set; }
  9.  
  10.     public ImplicitTest(double val)
  11.     {
  12.         this.Val = val;
  13.     }
  14.  
  15.     public static implicit operator int(ImplicitTest d)
  16.     {
  17.         return (int)d.Val;
  18.     }
  19. }
  20.  
  21. public class TestClass
  22. {
  23.     public int Val { get; set; }
  24.  
  25.     public TestClass(int val = 5)
  26.     {
  27.         this.Val = val;
  28.     }
  29.  
  30.     public TestClass(int val1, int val2)
  31.     {
  32.         this.Val = val1 + val2;
  33.     }
  34.  
  35.     public TestClass(int val1, int val2, int val3, int val4, int val5, int val6, int val7, int val8, int val9, int val10, int val11, int val12, int val13, int val14)
  36.     {
  37.         this.Val = val1 + val2 + val3 + val4 + val5 + val6 + val7 + val8 + val9 + val10 + val11 + val12 + val13 + val14;
  38.     }
  39. }
  40.  
  41. public static class DynamicFactory
  42. {
  43.     private static readonly CallSiteBinder callsiteBinder0 = Binder.InvokeConstructor(
  44.         CSharpBinderFlags.None,
  45.         typeof(DynamicFactory),
  46.         // It is OK to have too many arguments :-)
  47.         new CSharpArgumentInfo[] 
  48.         {
  49.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.IsStaticType | CSharpArgumentInfoFlags.UseCompileTimeType, null), // 0 parameters
  50.         });
  51.  
  52.     private static readonly CallSiteBinder callsiteBinder = Binder.InvokeConstructor(
  53.         CSharpBinderFlags.None,
  54.         typeof(DynamicFactory),
  55.         // It is OK to have too many arguments :-)
  56.         // Note that this "feature" doesn't work correctly with Mono in the
  57.         // case of 0 arguments
  58.         new CSharpArgumentInfo[] 
  59.         {
  60.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.IsStaticType | CSharpArgumentInfoFlags.UseCompileTimeType, null), // 0 parameters
  61.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null), // 1 parameter
  62.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null), // 2 parameters
  63.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null), 
  64.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
  65.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
  66.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null), 
  67.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
  68.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
  69.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null), 
  70.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
  71.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
  72.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
  73.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null),
  74.             CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null), // 14 parameters
  75.         });
  76.  
  77.     // Quirk of Mono with 0 arguments. See callsiteBinder0
  78.     private static readonly CallSite<Func<CallSite, Type, object>> CallSite0 = CallSite<Func<CallSite, Type, object>>.Create(callsiteBinder0);
  79.  
  80.     private static readonly CallSite<Func<CallSite, Type, object, object>> CallSite1 = CallSite<Func<CallSite, Type, object, object>>.Create(callsiteBinder);
  81.     private static readonly CallSite<Func<CallSite, Type, object, object, object>> CallSite2 = CallSite<Func<CallSite, Type, object, object, object>>.Create(callsiteBinder);
  82.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object>> CallSite3 = CallSite<Func<CallSite, Type, object, object, object, object>>.Create(callsiteBinder);
  83.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object>> CallSite4 = CallSite<Func<CallSite, Type, object, object, object, object, object>>.Create(callsiteBinder);
  84.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object>> CallSite5 = CallSite<Func<CallSite, Type, object, object, object, object, object, object>>.Create(callsiteBinder);
  85.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object>> CallSite6 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  86.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object>> CallSite7 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  87.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object>> CallSite8 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  88.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object>> CallSite9 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  89.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object>> CallSite10 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  90.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object, object>> CallSite11 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  91.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object, object, object>> CallSite12 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  92.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object, object, object, object>> CallSite13 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  93.     private static readonly CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object, object, object, object, object>> CallSite14 = CallSite<Func<CallSite, Type, object, object, object, object, object, object, object, object, object, object, object, object, object, object, object>>.Create(callsiteBinder);
  94.  
  95.     public static object Create(string typeName, params object[] args)
  96.     {
  97.         return Create(Type.GetType(typeName), args);
  98.     }
  99.  
  100.     public static object Create(Type type, params object[] args)
  101.     {
  102.         if (type == null)
  103.         {
  104.             throw new ArgumentNullException("type");
  105.         }
  106.  
  107.         if (args == null)
  108.         {
  109.             args = new object[0];
  110.         }
  111.  
  112.         object obj;
  113.  
  114.         switch (args.Length)
  115.         {
  116.             case 0:
  117.                 // Quirk of Mono with 0 arguments. See callsiteBinder0
  118.                 obj = CallSite0.Target(CallSite0, type);
  119.                 break;
  120.  
  121.             case 1:
  122.                 obj = CallSite1.Target(CallSite1, type, args[0]);
  123.                 break;
  124.  
  125.             case 2:
  126.                 obj = CallSite2.Target(CallSite2, type, args[0], args[1]);
  127.                 break;
  128.  
  129.             case 3:
  130.                 obj = CallSite3.Target(CallSite3, type, args[0], args[1], args[2]);
  131.                 break;
  132.  
  133.             case 4:
  134.                 obj = CallSite4.Target(CallSite4, type, args[0], args[1], args[2], args[3]);
  135.                 break;
  136.  
  137.             case 5:
  138.                 obj = CallSite5.Target(CallSite5, type, args[0], args[1], args[2], args[3], args[4]);
  139.                 break;
  140.  
  141.             case 6:
  142.                 obj = CallSite6.Target(CallSite6, type, args[0], args[1], args[2], args[3], args[4], args[5]);
  143.                 break;
  144.  
  145.             case 7:
  146.                 obj = CallSite7.Target(CallSite7, type, args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
  147.                 break;
  148.  
  149.             case 8:
  150.                 obj = CallSite8.Target(CallSite8, type, args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7]);
  151.                 break;
  152.  
  153.             case 9:
  154.                 obj = CallSite9.Target(CallSite9, type, args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8]);
  155.                 break;
  156.  
  157.             case 10:
  158.                 obj = CallSite10.Target(CallSite10, type, args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8], args[9]);
  159.                 break;
  160.  
  161.             case 11:
  162.                 obj = CallSite11.Target(CallSite11, type, args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8], args[9], args[10]);
  163.                 break;
  164.  
  165.             case 12:
  166.                 obj = CallSite12.Target(CallSite12, type, args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8], args[9], args[10], args[11]);
  167.                 break;
  168.  
  169.             case 13:
  170.                 obj = CallSite13.Target(CallSite13, type, args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8], args[9], args[10], args[11], args[12]);
  171.                 break;
  172.  
  173.             case 14:
  174.                 obj = CallSite14.Target(CallSite14, type, args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8], args[9], args[10], args[11], args[12], args[13]);
  175.                 break;
  176.  
  177.             default:
  178.                 throw new ArgumentException("Too many parameters");
  179.         }
  180.  
  181.         return obj;
  182.     }
  183. }
  184.  
  185. public class Program
  186. {
  187.     public static void Main()
  188.     {
  189.     	try
  190.     	{
  191.     		Type monoRuntime = Type.GetType("Mono.Runtime");
  192.  
  193. 			if (monoRuntime != null)
  194. 			{
  195. 			    System.Reflection.MethodInfo displayName = monoRuntime.GetMethod("GetDisplayName", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);
  196.  
  197. 			    if (displayName != null)
  198. 			    {
  199. 			        Console.WriteLine("Mono version {0}", displayName.Invoke(null, null));
  200. 			    }
  201. 			}
  202.  
  203. 	        TestClass tc0 = (TestClass)DynamicFactory.Create("TestClass");
  204. 	        TestClass tc1 = (TestClass)DynamicFactory.Create("TestClass", new ImplicitTest(1.0));
  205. 	        TestClass tc1b = (TestClass)DynamicFactory.Create("TestClass", 1);
  206. 	        TestClass tc2 = (TestClass)DynamicFactory.Create("TestClass", new ImplicitTest(1.0), new ImplicitTest(2.0));
  207. 	        TestClass tc14 = (TestClass)DynamicFactory.Create("TestClass", Enumerable.Range(0, 14).Select(x => new ImplicitTest((double)x)).ToArray());
  208.  
  209. 	        Console.WriteLine(tc0.Val);
  210. 	        Console.WriteLine(tc1.Val);
  211. 	        Console.WriteLine(tc1b.Val);
  212. 	        Console.WriteLine(tc2.Val);
  213. 	        Console.WriteLine(tc14.Val);
  214.     	}
  215.     	catch (Exception ex)
  216.     	{
  217.     		Console.WriteLine(ex);
  218.     	}
  219.     }
  220. }
Success #stdin #stdout 0.44s 30952KB
comments (?)
stdin 
Standard input is empty
stdout 
Mono version 4.0.2 (Stable 4.0.2.5/c99aa0c Wed Jun 24 10:12:58 UTC 2015)
5
1
1
3
91
https://ideone.com/NoQ67H
language:
C# (gmcs 5.20.1)
created:
8 years ago
visibility:
public

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