A few minor optimizations

Author: xenmax

src/Promise.cs

@@ -295,6 +295,12 @@ public Promise(Action<Action<PromisedT>, Action<Exception>> resolver)
             }
         }
 
+        private Promise(PromiseState initialState)
+        {
+            CurState = initialState;
+            id = Promise.NextId();
+        }
+
         /// <summary>
         /// Add a rejection handler for this promise.
         /// </summary>
@@ -1107,8 +1113,8 @@ public static IPromise<PromisedT> Race(IEnumerable<IPromise<PromisedT>> promises
         /// </summary>
         public static IPromise<PromisedT> Resolved(PromisedT promisedValue)
         {
-            var promise = new Promise<PromisedT>();
-            promise.Resolve(promisedValue);
+            var promise = new Promise<PromisedT>(PromiseState.Resolved);
+            promise.resolveValue = promisedValue;
             return promise;
         }
 
@@ -1119,8 +1125,8 @@ public static IPromise<PromisedT> Rejected(Exception ex)
         {
 //            Argument.NotNull(() => ex);
 
-            var promise = new Promise<PromisedT>();
-            promise.Reject(ex);
+            var promise = new Promise<PromisedT>(PromiseState.Rejected);
+            promise.rejectionException = ex;
             return promise;
         }
 
@@ -1183,7 +1189,7 @@ public IPromise<ConvertedT> ContinueWith<ConvertedT>(Func<IPromise<ConvertedT>>
 
         public IPromise<PromisedT> Progress(Action<float> onProgress)
         {
-            if (onProgress != null)
+            if (CurState == PromiseState.Pending && onProgress != null)
             {
                 ProgressHandlers(this, onProgress);
             }

src/Promise_NonGeneric.cs

@@ -369,6 +369,12 @@ public Promise(Action<Action, Action<Exception>> resolver)
             }
         }
 
+        private Promise(PromiseState initialState)
+        {
+            CurState = initialState;
+            id = NextId();
+        }
+
         /// <summary>
         /// Increments the ID counter and gives us the ID for the next promise.
         /// </summary>
@@ -1178,16 +1184,10 @@ public static IPromise Race(IEnumerable<IPromise> promises)
         /// <summary>
         /// Convert a simple value directly into a resolved promise.
         /// </summary>
-        private static IPromise resolvedPromised;
+        private static IPromise resolvedPromise = new Promise(PromiseState.Resolved);
         public static IPromise Resolved()
         {
-            if (resolvedPromised == null)
-            {
-                var promise = new Promise();
-                promise.Resolve();
-                resolvedPromised = promise;
-            }
-            return resolvedPromised;
+            return resolvedPromise;
         }
 
         /// <summary>
@@ -1197,8 +1197,8 @@ public static IPromise Rejected(Exception ex)
         {
 //            Argument.NotNull(() => ex);
 
-            var promise = new Promise();
-            promise.Reject(ex);
+            var promise = new Promise(PromiseState.Rejected);
+            promise.rejectionException = ex;
             return promise;
         }
 
@@ -1257,7 +1257,7 @@ public IPromise<ConvertedT> ContinueWith<ConvertedT>(Func<IPromise<ConvertedT>>
 
         public IPromise Progress(Action<float> onProgress)
         {
-            if (onProgress != null)
+            if (CurState == PromiseState.Pending && onProgress != null)
             {
                 ProgressHandlers(this, onProgress);
             }