start impl

1 files changed, 32 insertions, 0 deletions

diff --git a/IrcStates/Extensions.cs b/IrcStates/Extensions.cs
new file mode 100644
index 0000000..dde0edb
--- /dev/null
+++ b/IrcStates/Extensions.cs
@@ -0,0 +1,32 @@
+using System;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection;
+
+namespace IrcStates
+{
+    public static class Extensions
+    {
+        public static Delegate CreateDelegate(this MethodInfo methodInfo, object target)
+        {
+            if (methodInfo == null) return null;
+
+            var types = methodInfo.GetParameters().Select(p => p.ParameterType);
+
+            Func<Type[], Type> getType;
+            if (methodInfo.ReturnType == typeof(void))
+            {
+                getType = Expression.GetActionType;
+            }
+            else
+            {
+                getType = Expression.GetFuncType;
+                types   = types.Concat(new[] {methodInfo.ReturnType});
+            }
+
+            return methodInfo.IsStatic
+                ? Delegate.CreateDelegate(getType(types.ToArray()), methodInfo)
+                : Delegate.CreateDelegate(getType(types.ToArray()), target, methodInfo);
+        }
+    }
+}