--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Implab/SuccessPromise.cs	Sun Mar 08 02:52:27 2015 +0300
@@ -0,0 +1,111 @@
+using System;
+
+namespace Implab {
+    public class SuccessPromise : IPromise {
+        #region IPromise implementation
+
+        public IPromise On(Action success, Action<Exception> error, Action<Exception> cancel) {
+            if (success != null) {
+                try {
+                    success();
+                } catch(Exception err) {
+                    if (error != null) {
+                        try {
+                            error(err);
+                        // Analysis disable once EmptyGeneralCatchClause
+                        } catch {
+                        }
+                    }
+                }
+            }
+            return this;
+        }
+
+        public IPromise On(Action success, Action<Exception> error) {
+            if (success != null) {
+                try {
+                    success();
+                } catch(Exception err) {
+                    if (error != null) {
+                        try {
+                            error(err);
+                            // Analysis disable once EmptyGeneralCatchClause
+                        } catch {
+                        }
+                    }
+                }
+            }
+            return this;
+        }
+
+        public IPromise On(Action success) {
+            if (success != null) {
+                try {
+                    success();
+                    // Analysis disable once EmptyGeneralCatchClause
+                } catch {
+                }
+            }
+            return this;
+        }
+
+        public IPromise On(Action handler, PromiseEventType events) {
+            if (handler != null && events.HasFlag(PromiseEventType.Success)) {
+                try {
+                    handler();
+                    // Analysis disable once EmptyGeneralCatchClause
+                } catch {
+                }
+            }
+            return this;
+        }
+
+        public IPromise<T> Cast<T>() {
+            throw new InvalidCastException();
+        }
+
+        public void Join() {
+        }
+
+        public void Join(int timeout) {
+        }
+
+        public Type PromiseType {
+            get {
+                return typeof(void);
+            }
+        }
+
+        public bool IsResolved {
+            get {
+                return true;
+            }
+        }
+
+        public bool IsCancelled {
+            get {
+                return false;
+            }
+        }
+
+        public Exception Error {
+            get {
+                return null;
+            }
+        }
+
+        #endregion
+
+        #region ICancellable implementation
+
+        public void Cancel() {
+        }
+
+        public void Cancel(Exception reason) {
+        }
+
+        #endregion
+
+    }
+}
+